JPS63308243A - Liquid-sealed type elastic bushing - Google Patents
Liquid-sealed type elastic bushingInfo
- Publication number
- JPS63308243A JPS63308243A JP14571087A JP14571087A JPS63308243A JP S63308243 A JPS63308243 A JP S63308243A JP 14571087 A JP14571087 A JP 14571087A JP 14571087 A JP14571087 A JP 14571087A JP S63308243 A JPS63308243 A JP S63308243A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- partition wall
- orifice
- movable valve
- inner cylinder
- 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
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000005192 partition Methods 0.000 claims abstract description 22
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 239000005060 rubber Substances 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 7
- 238000000638 solvent extraction Methods 0.000 abstract 1
- 238000013016 damping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 235000011293 Brassica napus Nutrition 0.000 description 1
- 240000008100 Brassica rapa Species 0.000 description 1
- 235000000540 Brassica rapa subsp rapa Nutrition 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
この発明は、自動車のエンジンのマウントあるいはロー
ルインシュレータ用に使用して好適な液封型弾性ブツシ
ュに関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a liquid-sealed elastic bushing suitable for use in an automobile engine mount or roll insulator.
（ロ）従来の技術
従来、ブツシュタイプの防振ゴムにも、比較的大振動時
における減衰性の向上を企図してゴム弾性体の中に連通
構造で連通される液室を隔設して内部に液を封入した液
封型弾性ブツシュが見られる（例えば、特許第８８５８
２０号）。一方、このような液封型の防振ゴムに、微少
振動時、液移動を許容して吸振性を向上させるため、こ
の目的に沿うよう構成された可動弁を設けたものもある
。(B) Conventional technology Conventionally, bush type vibration isolating rubber has also been provided with separate liquid chambers that are communicated with each other through a communication structure in the rubber elastic body in order to improve damping performance in the event of relatively large vibrations. Liquid-sealed elastic bushings with liquid sealed inside are seen (for example, Patent No. 8858).
No. 20). On the other hand, some liquid-seal type vibration-proof rubbers are provided with a movable valve configured to meet this purpose in order to improve vibration absorbing properties by allowing liquid to move during minute vibrations.
この発明者もブツシュタイプの液封型弾性ブツシュに可
動弁を装設したものを先に特願昭６２−６７４１４号と
して提案している。This inventor also previously proposed in Japanese Patent Application No. 62-67414 a bushing-type liquid-sealed elastic bushing equipped with a movable valve.
（ハ）発明が解決しようとする問題点
ところが、このようなブツシュタイプにあっては、もと
もと外形寸法が抑えられている上に内筒の周囲にはオリ
フィス構造を設けたものが多いから、結局、液室を仕切
る隔壁の長さを十分取れない。したがって、振動に基づ
く繰り返し荷重の応力がそれだけ大きくなり、耐久性の
点で問題があった。特に、応力集中する内筒との付は根
の辺りが最大になり、この辺りに往々にして亀裂が入っ
ていた。(c) Problems to be solved by the invention However, in the case of such bush type bushings, the external dimensions are originally suppressed, and many of them have an orifice structure around the inner cylinder. As a result, the length of the partition walls that partition the liquid chambers cannot be made sufficient. Therefore, the stress due to repeated loads due to vibration becomes correspondingly large, which poses a problem in terms of durability. In particular, the stress concentration is greatest around the root of the inner cylinder, and cracks often appear in this area.
（ニ）問題点を解決するための手段
そこで、この発明は、内筒と外筒間にモールドされるゴ
ム弾性体の中に側壁と隔壁とで連通構造によって連通さ
れる液封液室を隔設した液封型弾性ブツシュにおいて、
前記隔壁に前記両液室を連通する連通孔を形成し、この
連通孔中に、前記液の前記液室間の移動を微少振動時許
容し、比較的大振励時規制するよう作動する断面工形の
可動弁を設置するとともに、この可動弁に前記両液室を
常時連絡するオリフィスを設け、このオリフィスと前記
連通孔とで前記連通構造を構成したことを特徴とする液
封型弾性ブツシュを提供することで、前記した問題点を
解決したのである。(d) Means for Solving the Problems Therefore, the present invention provides a liquid-sealing liquid chamber that is separated into a rubber elastic body molded between an inner cylinder and an outer cylinder, and which is communicated by a communication structure between a side wall and a partition wall. In the liquid-sealed elastic bushing,
A communication hole is formed in the partition wall to communicate the two liquid chambers, and a cross section is provided in the communication hole that operates to allow the movement of the liquid between the liquid chambers when there is a slight vibration and to restrict it when there is a relatively large vibration. A liquid-sealed elastic bushing characterized in that a shaped movable valve is installed, an orifice is provided in the movable valve to constantly communicate the two liquid chambers, and the orifice and the communication hole constitute the communication structure. By providing this, the above-mentioned problems were solved.
（ホ）作用
以上により、連通構造の一要素を構成するオリフィスに
は可動弁構造が施されて小振動時の動ばね定数を引き下
げるとともに、このオリフィスは内筒の周囲にではなく
、隔壁に設けられた可動弁に設置されるから、それだけ
内筒外径を小さくでき、十分な隔壁の長さを確保できる
のである。(E) As a result of the above action, the orifice that constitutes one element of the communication structure is equipped with a movable valve structure to lower the dynamic spring constant during small vibrations, and this orifice is provided on the partition wall instead of around the inner cylinder. Since it is installed in a movable valve that is attached to a wall, the outer diameter of the inner cylinder can be reduced accordingly, and a sufficient length of the partition wall can be ensured.
（へ）実施例
以下、この発明の実施例を図面を参照して説明するが、
第１図はこの発明の実施例の液封型弾性ブツシュの横断
面図、第２図は同じく縦断面図。(F) Examples Examples of the present invention will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view of a liquid-sealed elastic bushing according to an embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view of the same.
第３図は同じく側面図、第４図は他の実施例の液封型弾
性ブツシュの＃魚所面図（右半分はスト・７パ一部位を
外した場合を示す）、第５図は同じく縦断面図（第６図
のＶ−Ｖ方向断面図に相当）、第６図は同じく側面図、
第７図〜第９図は可動弁のそれぞれを示す断面図、第１
０図は可動弁の平面図である。Fig. 3 is a side view, Fig. 4 is a side view of a liquid-sealed elastic bushing according to another embodiment (the right half shows the case where the stopper and the seventh part are removed), and Fig. 5 is a side view. Similarly, a vertical cross-sectional view (corresponding to the V-V direction cross-sectional view in Fig. 6), Fig. 6 is a side view,
Figures 7 to 9 are cross-sectional views showing each of the movable valves.
Figure 0 is a plan view of the movable valve.
この液封型弾性ブツシュは、金属製の内筒１と外筒２を
平行配置しくただし、エンジンマウントに使用するもの
は第１図〜第３図のように反荷重方向に予め偏心させて
あり、ロールインシュレータ用として使用するものは第
４図〜第６図のように間怠にセットしである）、この両
者１．２の間にスリーブ状のゴム弾性体３を一体モール
ドするとともに、このゴム弾性体３の内部に適当な液４
を封入した二つの液室５を隔設するのである。すなわち
、内筒１に対してその軸芯と直角方向に側壁６を、水平
方向に隔壁７をそれぞれ装設して内部を空間としたもの
を液中で外筒１に挿入すれば、この空間の部分が液室５
となって内部に液４を封入できるのである。ところで、
この場合、偏心型のものであれば偏心（振動）方向の偏
寄側、同芯型のものであれば振動方向の両側の側壁６部
分を内側にわん曲させた形状にしておくのである。This liquid seal type elastic bushing has a metal inner cylinder 1 and an outer cylinder 2 arranged in parallel, and the one used for the engine mount is eccentric in the direction opposite to the load as shown in Figures 1 to 3. , those used as roll insulators are set in a lazy manner as shown in Figs. A suitable liquid 4 is placed inside the rubber elastic body 3.
Two liquid chambers 5 filled with the liquid are separated from each other. That is, if the inner cylinder 1 is provided with a side wall 6 in a direction perpendicular to its axis and a partition wall 7 in a horizontal direction to create a space inside the inner cylinder 1, and inserted into the outer cylinder 1 in liquid, this space will be filled. The part is liquid chamber 5
Therefore, liquid 4 can be sealed inside. by the way,
In this case, in the case of an eccentric type, the side wall 6 portions on the eccentric side in the eccentric (vibration) direction, and in the case of a concentric type, the side wall 6 portions on both sides in the vibration direction are curved inward.
これは、こうすることで、振動時における（ＩＩＩＬＥ
Ｈの収縮、伸長を助長し、その結果、液４の液室５間移
動を容易にするからである。なお、ゴム弾性体３の外周
端近くには液室５部分を窓状に切欠いた芯金８を挿入し
て強度アンプを図るとともに。By doing this, (IIILE
This is because it promotes the contraction and expansion of H and, as a result, facilitates the movement of the liquid 4 between the liquid chambers 5. Incidentally, near the outer peripheral end of the rubber elastic body 3, a core bar 8 having a window-like notch formed in the liquid chamber 5 is inserted to increase the strength.
、 芯金８の外側にもゴム弾性体３０層をわずかに設け
、その外周に数本の突条（図示省略）を形成しておけば
、液封の際のシール性が向上する。If 30 layers of rubber elastic body are slightly provided on the outside of the core metal 8 and several protrusions (not shown) are formed on the outer periphery, the sealing performance during liquid sealing can be improved.
以上により、外筒２を固定部材に固定し、内筒１に被支
持部材（振動部材）を取り付けることで、この被支持部
材を弾性支持できるのであるが。As described above, by fixing the outer cylinder 2 to the fixed member and attaching the supported member (vibrating member) to the inner cylinder 1, the supported member can be elastically supported.
このとき、前記液室５間は連通構造９で連通されており
、このときに液４の移動が起こるから、その流通抵抗に
よって振動は減衰するのである。このための連通構造９
であるが、ここでは、前記隔壁７の適所に連通孔１０を
形成し、この連通孔１ｏ中に断面工形の可動弁１１を設
置するとともに、この可動弁１１中に両液室５を常時連
絡するオリフィス１２を形成し、これらを前記した連通
構造９とするのである。なお、可動弁１１は、液室５間
の液４の移動を微少振動時許容し、比較的大振励時規制
するよう作動する。すなわち、断面工形のうちの弁体１
１ａを連通孔１０中に相当の隙間１３を有して嵌合する
とともに、その両端に連通孔１０の径よりも大きな径を
有し、かつ、長さも長い弁頭１１ｂを取り付けたもので
ある。こうすることで、微少振動時可動弁１１は大して
動かず、液４は連通孔１０との隙間１３を通って自由に
移動するが、比較的大振動時、可動弁１１が動いてその
弁頭１１ｂが隔壁７に接当し、隙間１３を閉止してしま
うから、液４の移動は規制されるのである。なお、可動
弁１１にこのような挙動をさせるのは、こうすることで
、微少振動時に動ばね定数を下げて吸振性を高め、比較
的大振動時に高減衰性を発揮させるためである。したが
って、オリフィス１２の径や長さはこれに適合するよう
に設定されなければならないが、特に。At this time, the liquid chambers 5 are communicated with each other by the communication structure 9, and since movement of the liquid 4 occurs at this time, the vibration is attenuated by the flow resistance. Communication structure 9 for this purpose
However, here, a communication hole 10 is formed at a suitable location in the partition wall 7, and a movable valve 11 with a cross-sectional shape is installed in this communication hole 1o, and both liquid chambers 5 are always kept in this movable valve 11. A communicating orifice 12 is formed, and these are made into the above-mentioned communication structure 9. The movable valve 11 operates to allow the movement of the liquid 4 between the liquid chambers 5 when there is a slight vibration, and to restrict it when there is a relatively large vibration. In other words, valve body 1 of the cross-sectional shape
1a is fitted into the communicating hole 10 with a considerable gap 13, and a valve head 11b having a larger diameter than the diameter of the communicating hole 10 and a longer length is attached to both ends thereof. . By doing this, the movable valve 11 does not move much when a slight vibration occurs, and the liquid 4 moves freely through the gap 13 with the communication hole 10, but when a relatively large vibration occurs, the movable valve 11 moves and its valve head 11b comes into contact with the partition wall 7 and closes the gap 13, so the movement of the liquid 4 is restricted. The reason why the movable valve 11 behaves in this way is to lower the dynamic spring constant during minute vibrations and improve vibration absorption performance, and to exhibit high damping performance during relatively large vibrations. Therefore, the diameter and length of the orifice 12 must be set to suit this, especially.
長さに関してはある程度のものが確保されなければ必要
な流通抵抗も発生しないから、第１０図に示すように、
一方のあるいは両方の弁１ｉＪＨ１ｂの中をぐるくると
迂回させたり、あるいは第９図に示すように、その長さ
を弁体１１ａの長さ以上に設けたりすることが考えられ
る。さらに、連通孔１０にこのような断面工形をした可
動弁１１を挿入する方法であるが、第７図、第８図で示
すように、弁体１１ａもしくは弁頭１１ｂを分割型にし
、挿入した後で摩擦溶着等すれば、このことが可能にな
る。なお、可動弁１１．特に、その弁頭１１ｂの平面形
状は一般的には円形であるが、これに限定されるもので
はなく１例えば、多角形のようなものであってもよい。Since the necessary flow resistance will not occur unless a certain amount of length is secured, as shown in Figure 10,
It is conceivable to make a detour around one or both of the valves 1iJH1b, or to make the length longer than the length of the valve body 11a, as shown in FIG. Furthermore, there is a method of inserting the movable valve 11 having such a cross-sectional shape into the communication hole 10, but as shown in FIGS. 7 and 8, the valve body 11a or the valve head 11b is made into a split type, This can be achieved by performing friction welding or the like after that. Note that the movable valve 11. In particular, the planar shape of the valve head 11b is generally circular, but is not limited to this, and may be, for example, polygonal.
次に、被支持物になんらかのショックが加わり、内筒１
が過大に変位すれば、外筒２に相当な衝撃で衝突して破
損等も起こり得るから、これを規制するため、液室５内
にストッパー１４が設けられるのが通常であるが、ここ
では、前記した構成に関連してストッパー１４を以下の
ように構成するのが好ましい。すなわち、液室５内で、
外？：１２の振動方向に向けて延びる金属製の突起体を
溶接等で直接内筒２に取り付けるのである。なお、この
先端にはゴム弾性体３を隔壁７等から連続してモールド
して被フしておき、衝突の際のショック防止とするとと
もに、このときのストッパー１４の幅は内筒２の径より
も小さいものにし、隔壁７の長さを縮小化しないように
配慮する。これにより、与えられた寸法内で隔壁７の長
さを最大限に設定できるから、繰り返し荷重に基づく応
力を減し、寿命、耐久性がアップするのである。Next, some kind of shock is applied to the supported object, and the inner cylinder 1
If the liquid chamber 5 is displaced excessively, it may collide with the outer cylinder 2 with a considerable impact and cause damage, etc. To prevent this, a stopper 14 is normally provided in the liquid chamber 5, but here , It is preferable to configure the stopper 14 as follows in relation to the configuration described above. That is, within the liquid chamber 5,
Outside? : A metal protrusion extending in the vibration direction of 12 is directly attached to the inner cylinder 2 by welding or the like. Note that this tip is covered with a rubber elastic body 3 continuously molded from the partition wall 7 etc. to prevent shock in the event of a collision, and the width of the stopper 14 at this time is equal to the diameter of the inner cylinder 2. Care should be taken not to reduce the length of the partition wall 7. This allows the length of the partition wall 7 to be set to the maximum within the given dimensions, reducing stress due to repeated loads and increasing lifespan and durability.
（ト）発明の効果
以上、この発明は前記したものであるから５次のような
効果が期待できる。(G) Effects of the Invention Since this invention has been described above, the following five effects can be expected.
すなわち、連通構造９の一部を構成するオリフィス１２
を従来のように内筒１の周囲にではなく。That is, the orifice 12 forming part of the communication structure 9
It is not placed around the inner cylinder 1 as in the conventional case.
可動弁１１に設けたものであるから、隔壁７の長さを最
大限に取れる。したがって、これに加わる単位長さ当た
りの繰り返し荷重、すなわち、引っ張り応力や圧縮応力
が減少する。特に、応力が集中する内筒２との付は接辺
りの応力が軽減され、耐久性において著しく向上し、実
用に耐えられるものが可能になった。そして、この連通
構造９と同個所に可動弁１１機構を設置できたのである
から。Since it is provided on the movable valve 11, the length of the partition wall 7 can be maximized. Therefore, the repeated load per unit length applied thereto, that is, the tensile stress and compressive stress, decreases. In particular, the stress at the contact area with the inner cylinder 2, where stress is concentrated, is reduced, the durability is significantly improved, and it is now possible to create a product that can withstand practical use. Moreover, the movable valve 11 mechanism could be installed at the same location as this communication structure 9.
以上の効果の上に微少振動時の吸振性、比較的大振動時
の減衰性をともに向上させることが可能になったのであ
る。In addition to the above-mentioned effects, it has become possible to improve both the vibration absorption performance for minute vibrations and the damping performance for relatively large vibrations.
第１図はこの発明の実施例の液封型弾性ブツシュの横断
面図、第２図は同しく縦断面図、第３図は同しく側面図
、第４図は他の実施例の液封型弾性ブツシュの横断面図
（右半分はストッパ一部位を外した場合を示す）、第５
図は同じく紺断面図（第６図のＶ−Ｖ方間断面図に相当
）、第６図は同じく側面図、第７図〜第９図は可動弁の
それぞれを示す断面図、第１０図は可動弁の平面図であ
る。
（符号）
１・・内筒
２・・外筒
３・・ゴム弾性体
４ ・・ン皮
５・・液室
６ ・・（則壁
７・・隔壁
９・・連通構造
１０・・連通孔
１１・・可動弁
１２・・オリフィス
特許出願人 九五ゴム工業株式会社
代理人 弁理士 板 野 嘉 男
第１図
１・・自問 ９・・連通信心
２１１１＋外１７５ １０番・連通孔ろ ＊
ａ ：ｒム−７１′Ｎ’ｌ：Ｌ本１ １ ・畢「１
丁・１１カブＣ４０，液 １２−・オリフ、ス
５・・液室
６・・ｆｌｌｌ壁
７・・隔壁
第２図FIG. 1 is a cross-sectional view of a liquid-sealing elastic bushing according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view, FIG. 3 is a side view, and FIG. Cross-sectional view of the molded elastic bushing (the right half shows the case where one part of the stopper is removed), No. 5
The figure is also a dark blue cross-sectional view (corresponding to the V-V cross-sectional view in Figure 6), Figure 6 is a side view, Figures 7 to 9 are cross-sectional views showing each of the movable valves, and Figure 10. is a plan view of the movable valve. (Symbols) 1.Inner cylinder 2..Outer cylinder 3..Rubber elastic body 4..Skin 5..Liquid chamber 6..(Rule wall 7..Partition wall 9..Communication structure 10..Communication hole 11・・Movable valve 12 ・・Orifice patent applicant Kugo Rubber Industry Co., Ltd. agent Patent attorney Yoshi Itano Male Figure 1 1 ・・Self-examination 9 ・・Communication core 2111 + outer 175 No. 10・Communication hole *
a:rmu-71'N'l:L book 1 1 ・畢'1
11 Turnip C40, Liquid 12-・Orif, S5・・Liquid chamber 6・・Fllll wall 7・・Partition wall Fig. 2
Claims (1)
（３）の中に側壁（６）と隔壁（７）とで連通構造（９
）によって連通される液（４）封液室（５）を隔設した
液封型弾性ブッシュにおいて、前記隔壁（７）に前記両
液室（５）を連通する連通孔（１０）を形成し、この連
通孔（１０）中に、前記液（４）の前記液室（５）間の
移動を微少振動時許容し、比較的大振動時規制するよう
作動する断面工形の可動弁（１１）を設置するとともに
、この可動弁（１１）に前記両液室（５）を常時連絡す
るオリフィス（１２）を設け、このオリフィス（１２）
と前記連通孔（１０）とで前記連通構造（９）を構成し
たことを特徴とする液封型弾性ブッシュ。A communication structure (9) is formed between the side wall (6) and the partition wall (7) in the rubber elastic body (3) molded between the inner cylinder (1) and the outer cylinder (2).
), in which a liquid-sealing type elastic bushing is provided with a liquid-sealing elastic bush (4) and a liquid-sealing chamber (5), in which a communication hole (10) is formed in the partition wall (7) to communicate the two liquid chambers (5). A movable valve (11) with a cross-sectional shape is provided in the communication hole (10) to allow the movement of the liquid (4) between the liquid chambers (5) in the case of slight vibrations and to restrict the movement in the case of relatively large vibrations. ), and the movable valve (11) is provided with an orifice (12) that constantly communicates both the liquid chambers (5), and this orifice (12)
and the communication hole (10) constitute the communication structure (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14571087A JPS63308243A (en) | 1987-06-10 | 1987-06-10 | Liquid-sealed type elastic bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14571087A JPS63308243A (en) | 1987-06-10 | 1987-06-10 | Liquid-sealed type elastic bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63308243A true JPS63308243A (en) | 1988-12-15 |
Family
ID=15391331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14571087A Pending JPS63308243A (en) | 1987-06-10 | 1987-06-10 | Liquid-sealed type elastic bushing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63308243A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02190638A (en) * | 1989-01-17 | 1990-07-26 | Marugo Rubber Kogyo Kk | Liquid seal type elastic bush |
| WO2006058317A1 (en) * | 2004-11-29 | 2006-06-01 | Lord Corporation | Vehicle cab suspension damping bushing and method of making |
-
1987
- 1987-06-10 JP JP14571087A patent/JPS63308243A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02190638A (en) * | 1989-01-17 | 1990-07-26 | Marugo Rubber Kogyo Kk | Liquid seal type elastic bush |
| WO2006058317A1 (en) * | 2004-11-29 | 2006-06-01 | Lord Corporation | Vehicle cab suspension damping bushing and method of making |
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