JP2528935B2 - Liquid filled bush - Google Patents
Liquid filled bushInfo
- Publication number
- JP2528935B2 JP2528935B2 JP10563788A JP10563788A JP2528935B2 JP 2528935 B2 JP2528935 B2 JP 2528935B2 JP 10563788 A JP10563788 A JP 10563788A JP 10563788 A JP10563788 A JP 10563788A JP 2528935 B2 JP2528935 B2 JP 2528935B2
- Authority
- JP
- Japan
- Prior art keywords
- communication passage
- liquid
- inner cylinder
- elastic body
- bush
- 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.)
- Expired - Fee Related
Links
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)
- Vehicle Body Suspensions (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Description
本発明は自動車等車輌用サスペンション、特にエンジ
ンあるいはミッション支持用マウントとして使用して有
用な弾性支持装置に関するものである。The present invention relates to a suspension for a vehicle such as an automobile, and more particularly to an elastic support device useful as a mount for supporting an engine or a mission.
【従来の技術及び発明が解決しようとする課題】 サスペンション対象の一方の支持部材に連結される剛
性の内筒部材と、その内筒部材の半径方向外方に位置
し、他方の部材に連結される外筒とが、弾性体を介して
同心的に一体化され、軸直角方向に減衰作用を有する弾
性ブッシュは、従来より提案され実用化されている。ま
た、弾性体内部の軸直角方向に２つの流体室を設けてオ
リフィスで連絡し、軸直角方向の減衰作用を改善した液
体封入ブッシュも多く提案されている。例えば、特開昭
61−31736号では、オリフィスを弾性体の外周（外筒
側）又は内筒の外周のどちらか一方に設けて流体室間を
連絡している。 液体封入ブッシュにおいてこのように２つの流体室間
をオリフィスで連絡すると、従来の弾性ブッシュには得
られなかった高い減衰が得られて好ましいが、低周波帯
域の振動の減衰を十分なものとするべく連通路の孔径等
を設定すると、高周波領域（50Hz以上）の振動では動バ
ネ定数が急激に増し、ノイズ、振動の絶縁性が悪い難点
を有していた。この点を解決する手段の一つとして、特
開昭62−118131号に見られるが、貫通孔内に両液室のそ
れぞれの内圧差によって変位される振動部材を設けたも
のであるために、複雑な加工を必要とし、製作上のネッ
クとなっていた。 そこで、低周波領域の振動を十分に減衰させ、しかも
高周波領域において、動バネ定数が急激に増すのを防止
する構造について種々検討した結果、本発明に到った。2. Description of the Related Art A rigid inner cylindrical member connected to one supporting member of a suspension object and a member radially outside the inner cylindrical member and connected to the other member. An elastic bush that is concentrically integrated with an outer cylinder via an elastic body and has a damping action in the direction perpendicular to the axis has been proposed and put into practical use. Also, many liquid-filled bushes have been proposed in which two fluid chambers are provided in the elastic body in the direction perpendicular to the axis and are connected by an orifice to improve the damping action in the direction perpendicular to the axis. For example,
In No. 61-31736, an orifice is provided on either the outer circumference of the elastic body (on the outer cylinder side) or the outer circumference of the inner cylinder to connect the fluid chambers. In the liquid-filled bush, if the two fluid chambers are connected to each other by the orifice as described above, high damping which is not obtained in the conventional elastic bush is obtained, which is preferable, but the damping of vibration in the low frequency band is made sufficient. If the hole diameter of the communication passage is set appropriately, the dynamic spring constant increases sharply in the high frequency range (50 Hz or higher), and the insulation of noise and vibration is poor. As one of means for solving this point, it is found in JP-A-62-118131, but since a vibrating member that is displaced by the respective internal pressure differences of both liquid chambers is provided in the through hole, It required complicated processing and was a bottleneck in production. Therefore, as a result of various studies on a structure for sufficiently attenuating the vibration in the low frequency region and preventing the dynamic spring constant from rapidly increasing in the high frequency region, the present invention has been accomplished.
そのための手段として、内筒（１）と外筒（２）間の
弾性体（３）の外周側複数位置へ液室（４）（４）を設
け、弾性体（３）の外周側へ連通路（５）を有した液体
封入ブッシュにおいて、液室（４）（４）間を連通させ
る他の連通路（９）を内筒（１）と直径方向に貫通孔
（６）を有する筒状剛性部材（７）とで円環状に形成
し、その円環状連通路（９）内にリング状部材（８）を
遊嵌した構造としたのである。リング状部材（８）は上
記貫通孔（６）に当接したときに、貫通孔（６）を塞ぐ
に十分な幅を有しており、適当なガタが生じることで貫
通孔（６）の開度が変化するように遊嵌されている。As a means for this, the liquid chambers (4) and (4) are provided at a plurality of positions on the outer peripheral side of the elastic body (3) between the inner cylinder (1) and the outer cylinder (2) and are connected to the outer peripheral side of the elastic body (3). In the liquid-filled bush having the passage (5), another communication passage (9) for communicating between the liquid chambers (4) and (4) has a tubular shape having a through hole (6) in the diameter direction with the inner cylinder (1). The rigid member (7) is formed into an annular shape, and the ring-shaped member (8) is loosely fitted in the annular communication passage (9). The ring-shaped member (8) has a width sufficient to close the through hole (6) when it comes into contact with the through hole (6), and an appropriate amount of backlash results in the through hole (6). It is loosely fitted so that the opening changes.
このような構造であると、高周波微小振幅の場合で、
外周側連通路（５）が流動不能となる領域では、内筒に
遊嵌されたリング状部材（８）は内筒側連通路（５）の
貫通孔（６）の閉鎖が完全にない位置か、あるいは一部
閉鎖して開度調節する位置にあって液室（４）の体積変
化を吸収する。そこで、動バネ定数の増大を防止する。 次に、低周波大振幅の場合には、リング状部材（８）
は連通路の貫通孔（６）を塞ぐ位置まで移動させられ
る。また、低周波では外周側連通路（５）を液体が流動
可能であるため、その際の流動抵抗により振動をすみや
かに減衰させる。With such a structure, in the case of high frequency and small amplitude,
In the region where the outer peripheral side communication passage (5) cannot flow, the ring-shaped member (8) loosely fitted in the inner cylinder is at a position where the through hole (6) of the inner cylinder side communication passage (5) is not completely closed. Alternatively, the volume change of the liquid chamber (4) is absorbed at a position where the opening is adjusted by partially closing it. Therefore, the increase of the dynamic spring constant is prevented. Next, in the case of low frequency and large amplitude, the ring-shaped member (8)
Is moved to a position where it blocks the through hole (6) of the communication passage. Further, at a low frequency, the liquid can flow in the outer peripheral side communication passage (5), so the vibration is promptly attenuated by the flow resistance at that time.
以下図面によって本発明の実施例を詳細に説明する。 第１図は本発明の第１実施例の液体封入ブッシュの中
央縦断面図である。第２図は外筒未装着状態の同液体封
入ブッシュの側面図であり、第３図は第２図中Ａ−Ａ断
面図である。第４図はリング状部材の斜視図である。 これらの図にみられるように、この液体封入ブッシュ
は一方の支持部材に連結される剛性の内筒（１）と、そ
の内筒（１）の半径方向外方に位置し、他方の部材に連
結される外筒（２）とが、弾性体（３）を介して同心的
に一体化されており、その弾性体（３）に凹所を形成し
て液室（４）（４）を設けている。弾性体（３）の中間
筒（11）外周側には溝が形成されており、外筒（２）と
の間で液室（４）（４）のための連通路（５）が設けら
れており、更に、液室（４）（４）間を連通させる他の
連通路（９）を内筒（１）と直径方向に貫通孔（６）
（６）を有する筒状剛性部材（７）とで円環状に形成し
ている。 円環状の連通路（９）はこの例では内筒（１）に設け
られた浅溝と筒状剛性部材（７）との間に形成された空
所である。そして、この円環状の連通路（９）内に本発
明で最も特徴とする前記貫通孔（６）を閉塞又は開度調
節するリング状部材（８）を遊嵌している。リング状部
材（８）の一例は第４図に示した。長手方向に割溝（1
0）を設けて内筒（１）へ遊嵌できる構造である。 内筒（１）と筒状剛性部材（７）との間で円環状連通
路（９）を形成するには、前記第１図の第１実施例の外
に、第５図に示したように内筒（１）へ連通路（９）と
するに十分な深さの溝を形成し、その部分へ直径方向に
貫通孔（６）（６）を有する筒状剛性部材（７）を外挿
固定するとか、第６図に示したように、コ字状断面の筒
状剛性部材（７）を内筒（１）に外挿して円環状連通路
（９）を形成することができる。リング状部材（８）は
このような円環状連通路（９）内に軸直角方向の移動が
自由となるように設けられている。Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a central longitudinal sectional view of a liquid sealing bush according to a first embodiment of the present invention. FIG. 2 is a side view of the liquid-filled bush without the outer cylinder attached, and FIG. 3 is a sectional view taken along line AA in FIG. FIG. 4 is a perspective view of the ring-shaped member. As shown in these figures, the liquid-filled bush is provided with a rigid inner cylinder (1) connected to one supporting member, a radial outer side of the inner cylinder (1), and the other member. The outer cylinder (2) to be connected is concentrically integrated with the elastic body (3), and a recess is formed in the elastic body (3) to form the liquid chambers (4) and (4). It is provided. A groove is formed on the outer peripheral side of the intermediate cylinder (11) of the elastic body (3), and a communication passage (5) for the liquid chambers (4) and (4) is provided between the elastic body (3) and the outer cylinder (2). Further, another communication passage (9) for communicating between the liquid chambers (4) and (4) is provided with a through hole (6) diametrically with the inner cylinder (1).
The tubular rigid member (7) having (6) is formed into an annular shape. In this example, the annular communication passage (9) is a space formed between the shallow groove provided in the inner cylinder (1) and the cylindrical rigid member (7). A ring-shaped member (8) for closing or adjusting the opening of the through hole (6), which is the most characteristic feature of the present invention, is loosely fitted in the annular communication passage (9). An example of the ring-shaped member (8) is shown in FIG. Split groove (1
0) is provided so that the inner cylinder (1) can be loosely fitted. In order to form the annular communication passage (9) between the inner cylinder (1) and the cylindrical rigid member (7), as shown in FIG. 5 in addition to the first embodiment of FIG. A groove having a sufficient depth to form a communication passage (9) is formed in the inner cylinder (1), and a cylindrical rigid member (7) having through holes (6) (6) in the diametrical direction is formed outside the groove. By inserting and fixing, or as shown in FIG. 6, a cylindrical rigid member (7) having a U-shaped cross section can be externally attached to the inner cylinder (1) to form an annular communication passage (9). The ring-shaped member (8) is provided in such an annular communication passage (9) so as to be freely movable in the direction perpendicular to the axis.
本発明の液体封入ブッシュは以上のような構造である
から、低周波領域の振動を十分に減衰させ、しかも高周
波領域においても動バネ定数が急激に増すのを防止し
て、常に有効な振動防止効果を得ることができる。連通
路内にリング状部材を嵌めるだけであるから構造簡単で
製作も容易である。Since the liquid-filled bush of the present invention has the structure as described above, it sufficiently damps vibrations in the low frequency region and prevents the dynamic spring constant from rapidly increasing even in the high frequency region, thus always providing effective vibration prevention. The effect can be obtained. Since only the ring-shaped member is fitted in the communication passage, the structure is simple and the manufacture is easy.
第１図は本発明の第１実施例の液体封入ブッシュの中央
縦断面図である。第２図は外筒未装着状態の同液体封入
ブッシュの側面図であり、第３図は第２図中Ａ−Ａ断面
図である。第４図はリング状部材の斜視図である。第５
図及び第６図は他の実施例を示す内筒部分の中央縦断面
図である。 （１）……内筒、（２）……外筒 （３）……弾性体、（４）……液室 （５）……連通路、（６）……貫通孔 （７）……筒状剛性部材、（８）……リング状部材 （９）……連通路、（10）……割溝 （11）……中間筒FIG. 1 is a central longitudinal sectional view of a liquid sealing bush according to a first embodiment of the present invention. FIG. 2 is a side view of the liquid-filled bush without the outer cylinder attached, and FIG. 3 is a sectional view taken along line AA in FIG. FIG. 4 is a perspective view of the ring-shaped member. Fifth
FIG. 6 and FIG. 6 are central longitudinal sectional views of an inner cylinder portion showing another embodiment. (1) …… Inner cylinder, (2) …… Outer cylinder (3) …… Elastic body, (4) …… Liquid chamber (5) …… Communication passage, (6) …… Through hole (7) …… Cylindrical rigid member, (8) ...... Ring member (9) ...... Communication passage, (10) ...... Split groove (11) ...... Intermediate tube
Claims (1)
の外周側複数位置へ液室（４）（４）を設け、弾性体
（３）の外周側へ連通路（５）を有した液体封入ブッシ
ュにおいて、液室（４）（４）間を連通させる他の連通
路（９）を内筒（１）と直径方向に貫通孔（６）を有す
る筒状剛性部材（７）とで円環状に形成し、該円環状連
通路（９）内にリング状部材（８）を遊嵌したことを特
徴とする液体封入ブッシュ。1. An elastic body (3) between an inner cylinder (1) and an outer cylinder (2).
In the liquid sealing bush having the liquid chambers (4) and (4) at plural positions on the outer peripheral side and having the communication passage (5) on the outer peripheral side of the elastic body (3), the liquid chambers (4) and (4) communicate with each other. Another communication passage (9) is formed in an annular shape by the inner cylinder (1) and a cylindrical rigid member (7) having a through hole (6) in the diameter direction, and is formed in the annular communication passage (9). A liquid-filled bush in which a ring-shaped member (8) is loosely fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10563788A JP2528935B2 (en) | 1988-04-28 | 1988-04-28 | Liquid filled bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10563788A JP2528935B2 (en) | 1988-04-28 | 1988-04-28 | Liquid filled bush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01279129A JPH01279129A (en) | 1989-11-09 |
| JP2528935B2 true JP2528935B2 (en) | 1996-08-28 |
Family
ID=14412972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10563788A Expired - Fee Related JP2528935B2 (en) | 1988-04-28 | 1988-04-28 | Liquid filled bush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2528935B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1817508B1 (en) * | 2004-11-29 | 2010-02-24 | Lord Corporation | Vehicle cab suspension damping bushing and method of making |
| JP7264716B2 (en) * | 2019-05-15 | 2023-04-25 | 株式会社プロスパイラ | liquid seal bush |
-
1988
- 1988-04-28 JP JP10563788A patent/JP2528935B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01279129A (en) | 1989-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |