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JPS6246041A - Vibration-isolator - Google Patents

Vibration-isolator

Info

Publication number
JPS6246041A
JPS6246041A JP18492185A JP18492185A JPS6246041A JP S6246041 A JPS6246041 A JP S6246041A JP 18492185 A JP18492185 A JP 18492185A JP 18492185 A JP18492185 A JP 18492185A JP S6246041 A JPS6246041 A JP S6246041A
Authority
JP
Japan
Prior art keywords
liquid chamber
connecting shaft
intermediate film
vibration
orifice
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
Application number
JP18492185A
Other languages
Japanese (ja)
Inventor
Michihiro Orikawa
通洋 折川
Tatsuro Ishiyama
達郎 石山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP18492185A priority Critical patent/JPS6246041A/en
Publication of JPS6246041A publication Critical patent/JPS6246041A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04Units 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
    • F16F13/06Units 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
    • F16F13/24Units 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 central part of the unit being supported by one element and both extremities of the unit being supported by a single other element, i.e. double acting mounting

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

PURPOSE:To suitably absorb vibration by providing an orifice separately from a shaft piercing through a liquid chamber, thereby to always ensure movement of a fluid. CONSTITUTION:The middle portion of a connecting shaft 26 pierces through an intermediate film 24, and a ring 28 is fixed to the intermediate film 24 to move in the axial direction in relative to the outer periphery of the connecting shaft 26. Therefore, the ring 28 corresponds to the outer periphery of the connecting shaft 26, so that the intermediate film 24 moves relatively to the connecting shaft 26. Accordingly, even if the connecting shaft 26 moves, the intermediate film 24 is kept from being pulled to move by the connecting shaft 26, so that the expansion and contraction of an upper small liquid chamber 22A and a lower small liquid chamber 22B are ensured to suitably absorb vibration.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は振動発生部と振動受部との間に介在され、オリ
フィスを通過する液体の抵抗力で振動を吸収する防振装
置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vibration isolating device that is interposed between a vibration generator and a vibration receiver and absorbs vibrations by the resistance force of a liquid passing through an orifice.

[背景技術及び解決すべき事項] 自動車用のエンジンマウント、キャブマウント、ポテイ
マウント等に利用される防振装置として、液室を中間膜
で仕切ってこの仕切部分に設けたオリフィスで液体流動
時の抵抗を生じさせるようにした防振装置が提案されて
いる(特開昭52−131072号、特開昭53−11
7704号)。
[Background technology and issues to be solved] As a vibration isolating device used in automobile engine mounts, cab mounts, potty mounts, etc., a liquid chamber is partitioned with an intermediate film, and an orifice provided in this partition part is used to reduce resistance during liquid flow. A vibration isolating device has been proposed that causes the
No. 7704).

この防振装置では一方の液室の拡縮力を他方の液室の拡
縮力として伝達し、より大きな減衰効果を生じさせるた
めに隔壁部分を貫通する軸が設けられている。この軸と
隔壁との間にオリフィスが形成され、液室の拡縮時に液
体が急激に通過するようになっている。
This vibration isolator is provided with a shaft that passes through the partition wall in order to transmit the expansion/contraction force of one liquid chamber as the expansion/contraction force of the other liquid chamber and to produce a greater damping effect. An orifice is formed between this shaft and the partition wall, through which liquid rapidly passes when the liquid chamber expands or contracts.

しかしこの防振装置では、貫通した軸の軸心とずれた方
向に振動が作用すると、軸と隔壁との間の間隔、即ちオ
リフィスの大きさが変化し、所ψの周波数で減衰を得ら
れないことになる。
However, in this vibration isolator, when vibration acts in a direction that is misaligned with the axis of the penetrating shaft, the distance between the shaft and the partition wall, that is, the size of the orifice changes, and damping cannot be obtained at a specified frequency ψ. There will be no.

本発明は上記事実を考慮し、液室とオリフィスとを組合
わせて振動を吸収するようにした防振装置であっても、
異なる方向からの振動に対しても確実に振動を吸収する
ことができる防振装置を得ることが目的である。
In consideration of the above facts, the present invention provides a vibration isolating device that absorbs vibration by combining a liquid chamber and an orifice.
The object is to obtain a vibration isolator that can reliably absorb vibrations even from different directions.

[発明の概要及び作用] 本発明に係る防振装置は、液室が中間膜を介して小液室
に区画されると共にオリフィスを介して連通され、前記
中間膜には振動を他方の小液室へ伝える軸が貫通してお
り、この軸は中間膜とスライド可能とされることを特徴
としている。
[Summary and operation of the invention] In the vibration isolating device according to the present invention, a liquid chamber is divided into small liquid chambers through an intermediate membrane and communicated with each other through an orifice, and the intermediate membrane receives vibrations from one small liquid chamber and the other small liquid chamber. It is characterized in that it has a shaft passing through it that transmits information to the chamber, and that this shaft can slide on the interlayer membrane.

このため本発明では液室な貫通する軸とは別個に設けら
れたオリフィスが常に流体の移動を確保し、軸方向と異
なる方向の振動が作用した場合にも、軸は中間膜と相対
移動し、液室の拡縮を確実にし、かつオリフィスでの抵
抗発生を確保して適切な振動吸収を行うことができるよ
うになっている。
Therefore, in the present invention, the orifice provided separately from the shaft that penetrates the liquid chamber always ensures fluid movement, and even when vibrations in a direction different from the axial direction act, the shaft does not move relative to the intermediate film. , it is possible to ensure the expansion and contraction of the liquid chamber and to ensure the generation of resistance at the orifice to perform appropriate vibration absorption.

[発明の実施例1 第1図には本発明が適用された防振装置の実施例が示さ
れている。この防振装置lOは中間部に設けられるベー
スプレート12が車体への取付用となっており、外周部
付近に取付孔14が穿設され、取付ボルトが適用される
ようになっている。
Embodiment 1 of the Invention FIG. 1 shows an embodiment of a vibration isolator to which the present invention is applied. This vibration isolator IO has a base plate 12 provided in the middle part for attachment to the vehicle body, and has attachment holes 14 drilled near the outer periphery to which attachment bolts are applied.

このベースプレート12は中央部に貫通孔を有し、内周
部付近へゴム等の弾性体16が加硫接着されている。こ
の弾性体16はベースプレート12の上下に延長され、
上方延長部分にはリングプレート17が加硫接着され、
このリングプレート17ヘアツパプレート18がカシメ
固着され、下方延長部分にはリングプレート19が加硫
接着され、このリングプレート19ヘロアプレート20
がカシメ固着されている0弾性体16はこれらのアッパ
ブレー)1B、ロアプレート20と共に液室22を形成
しており、この液室22は中間膜24によって−L小液
室22Aと下手液室22Bとに区画されている。中間膜
24の外周部は弾性体16と一体的に連結されている。
This base plate 12 has a through hole in the center, and an elastic body 16 such as rubber is vulcanized and bonded to the vicinity of the inner circumference. This elastic body 16 extends above and below the base plate 12,
A ring plate 17 is vulcanized and bonded to the upper extension portion.
This ring plate 17 has a hair tuft plate 18 fixed by caulking, and a ring plate 19 is vulcanized and bonded to the downwardly extending portion.
The elastic body 16 to which is fixed by caulking forms a liquid chamber 22 together with the upper brake 1B and the lower plate 20, and this liquid chamber 22 is connected to the -L small liquid chamber 22A and the lower liquid chamber 22B by an intermediate film 24. It is divided into. The outer peripheral portion of the intermediate film 24 is integrally connected to the elastic body 16.

アッパプレート18とロアプレート20とには軸心部に
連結軸26が貫通している。この連結軸26の上端はア
ッパプレート18へ固着され、下端はロアプレート20
のスリーブ20Aとの間にOリング25が取付けられて
水密構造になっている。
A connecting shaft 26 passes through the upper plate 18 and the lower plate 20 at their axial center portions. The upper end of this connecting shaft 26 is fixed to the upper plate 18, and the lower end is fixed to the lower plate 20.
An O-ring 25 is attached between the sleeve 20A and a watertight structure.

この連結軸26は筒形状であり、図示しない取付ボルト
が貫通してアッパプレート18へ自動車エンジンを載置
固着できるようになっている。
The connecting shaft 26 has a cylindrical shape, and a mounting bolt (not shown) passes through the connecting shaft 26 so that an automobile engine can be mounted and fixed on the upper plate 18.

連結軸26の中間部は中間膜24を貫通しており、中間
膜24にはリング28が固着されて連結軸26の外周と
軸方向に相対移動可能となっている。このリング28は
ナイロン、アルミ、鉄等で製作することができ、連結軸
26の外周との間の隙間は0.1〜0.3m腸程度とす
る。
The intermediate portion of the connecting shaft 26 passes through the intermediate film 24, and a ring 28 is fixed to the intermediate film 24 so as to be movable relative to the outer circumference of the connecting shaft 26 in the axial direction. This ring 28 can be made of nylon, aluminum, iron, etc., and the gap between it and the outer periphery of the connecting shaft 26 is about 0.1 to 0.3 m.

中間膜24には小筒30が貫通固着されており、内部を
オリフィス32として上手液室22Aと下手液室22B
とを連通している。
A small cylinder 30 is fixed through the intermediate film 24, and an orifice 32 is formed inside the upper liquid chamber 22A and the lower liquid chamber 22B.
It communicates with

次に本実施例の作用を説明する。Next, the operation of this embodiment will be explained.

ベースプレート12は取付孔14を用いて図示しない自
動車の車体へ固着する。またアッパプレート18へは図
示しない自動車エンジンを搭載し、連結軸26へ挿入さ
れるボルトによってアッパプレート18へ固定する。
The base plate 12 is fixed to the body of an automobile (not shown) using the mounting holes 14. Further, an automobile engine (not shown) is mounted on the upper plate 18, and is fixed to the upper plate 18 by bolts inserted into the connecting shaft 26.

エンジンの運転時には、アッパプレート18を介してエ
ンジンの振動が伝達され、ロアプレート20へもこの振
動が伝わる。この振動を受ける弾性体16は内部摩擦に
よって振動を吸収する。また」−小液室22A、下手液
室22Bの拡縮によって液体がオリフィス32を通って
移動するので、この移動時に生ずる抵抗力で振動が吸収
される。
When the engine is in operation, engine vibrations are transmitted through the upper plate 18 and are also transmitted to the lower plate 20. The elastic body 16 that receives this vibration absorbs the vibration due to internal friction. Furthermore, as the liquid moves through the orifice 32 by expanding and contracting the small liquid chamber 22A and the lower liquid chamber 22B, vibrations are absorbed by the resistance force generated during this movement.

この−L小液室22Aと下手液室22Bとの関係は、連
結軸26が下方に移動して上手液室22Aが縮小される
と、下手液室22Bはロアプレート20が下方へ移動す
ることにより拡張され、オリフィス32内を通過する流
体の移動が促進されるため、巾に液室を拡縮する場合よ
りも大きな抵抗力が生ずる。また連結軸26が逆に−に
方向へ移動する場合も同様である。
The relationship between the -L small liquid chamber 22A and the lower liquid chamber 22B is such that when the connecting shaft 26 moves downward and the upper liquid chamber 22A is reduced, the lower plate 20 of the lower liquid chamber 22B moves downward. Since the liquid chamber is expanded and the movement of fluid passing through the orifice 32 is promoted, a larger resistance force is generated than when the liquid chamber is expanded or contracted in width. The same holds true when the connecting shaft 26 moves in the negative direction.

特に連結軸26の外周にはリング28が対応して中間膜
24が連結軸26と相対移動できるようになっているた
め、連結軸26が第1図ト下方向に移動した場合にも、
中間膜24はこの連結軸26に引張られて移動すること
がなく、上手液室22A、下手液室22Bの拡縮動作を
確実にする。
In particular, since a ring 28 corresponds to the outer periphery of the connecting shaft 26 so that the interlayer film 24 can move relative to the connecting shaft 26, even when the connecting shaft 26 moves downward in FIG.
The intermediate film 24 is not moved by being pulled by the connecting shaft 26, and ensures the expansion and contraction operations of the upper liquid chamber 22A and the lower liquid chamber 22B.

またエンジンからの振動が連結軸26の軸方向と異なる
方向に作用した場合にも、連結軸26は中間膜24と相
対移動して」−小液室22A、下手液室22Bの拡縮動
作を行う。この場合にもオリフィス32は常に同一の内
径を有しているので、連結軸26の移動時にオリフィス
32の大きさが変化することはなく、目標の周波数で安
定した減衰を得られることになる。
Furthermore, even when vibrations from the engine act in a direction different from the axial direction of the connecting shaft 26, the connecting shaft 26 moves relative to the intermediate film 24 to expand and contract the small liquid chamber 22A and the lower liquid chamber 22B. . Also in this case, since the orifice 32 always has the same inner diameter, the size of the orifice 32 does not change when the connecting shaft 26 moves, and stable attenuation can be obtained at the target frequency.

[発明の効果] 以」−説明した如く本発明に係る防振装置では、液室が
中間膜を介して小液室に区画されると共にオリフィスを
介して連通され、前記中間膜には振動を他方の小液室へ
伝える軸が貫通しており、この軸は中間膜とスライド可
能とされることを特徴とするので、振動が所定の方向と
異なる方向に作用した場合にも、所望の周波数で確実な
振動減衰を達成することができる優れた効果を有する。
[Effects of the Invention] As described above, in the vibration isolating device according to the present invention, the liquid chamber is divided into small liquid chambers through the intermediate membrane and communicated with each other through the orifice, and the intermediate membrane is not subjected to vibration. The shaft that transmits the signal to the other small liquid chamber passes through it, and this shaft is characterized by being able to slide on the interlayer film, so even if the vibration acts in a direction different from the predetermined direction, the desired frequency can be maintained. It has an excellent effect of achieving reliable vibration damping.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係る防振装置の実施例を示す縦断面図
である。 10・・・防振装置、 16・・拳弾性体、 18・・・アッパブレート、 20・・拳ロアプレート、 22A争・・上手液室、 22B・・・下手液室、 24・・・中間膜、 26・・・連結軸、 28・・・リング、 32・・・オリフィス。
FIG. 1 is a longitudinal sectional view showing an embodiment of a vibration isolator according to the present invention. DESCRIPTION OF SYMBOLS 10... Vibration isolator, 16... Fist elastic body, 18... Upper plate, 20... Fist lower plate, 22A... Upper fluid chamber, 22B... Lower fluid chamber, 24... Intermediate film , 26... Connection shaft, 28... Ring, 32... Orifice.

Claims (2)

【特許請求の範囲】[Claims] (1)液室が中間膜を介して小液室に区画されると共に
オリフィスを介して連通され、前記中間膜には振動を他
方の小液室へ伝える軸が貫通しており、この軸は中間膜
とスライド可能とされることを特徴とした防振装置。
(1) The liquid chamber is divided into small liquid chambers through an intermediate membrane and communicated through an orifice, and a shaft passes through the intermediate membrane to transmit vibrations to the other small liquid chamber. A vibration isolator characterized by being able to slide with an interlayer film.
(2)前記オリフィスは中間膜を貫通して形成されるこ
とを特徴とした前記特許請求の範囲第(1)項に記載の
防振装置。
(2) The vibration isolator according to claim 1, wherein the orifice is formed through an intermediate film.
JP18492185A 1985-08-22 1985-08-22 Vibration-isolator Pending JPS6246041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18492185A JPS6246041A (en) 1985-08-22 1985-08-22 Vibration-isolator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18492185A JPS6246041A (en) 1985-08-22 1985-08-22 Vibration-isolator

Publications (1)

Publication Number Publication Date
JPS6246041A true JPS6246041A (en) 1987-02-27

Family

ID=16161658

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18492185A Pending JPS6246041A (en) 1985-08-22 1985-08-22 Vibration-isolator

Country Status (1)

Country Link
JP (1) JPS6246041A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793600A (en) * 1986-03-14 1988-12-27 Bridgestone Corporation Vibration isolating apparatus
US4973031A (en) * 1986-09-16 1990-11-27 Bridgestone Corporation Anti-vibration apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS535376A (en) * 1976-06-30 1978-01-18 Peugeot Damping device
JPS53117704A (en) * 1977-03-23 1978-10-14 Boge Gmbh Motor bearing device resilient like rubber
JPS61130639A (en) * 1984-11-28 1986-06-18 Tokai Rubber Ind Ltd Mount with liquid

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS535376A (en) * 1976-06-30 1978-01-18 Peugeot Damping device
JPS53117704A (en) * 1977-03-23 1978-10-14 Boge Gmbh Motor bearing device resilient like rubber
JPS61130639A (en) * 1984-11-28 1986-06-18 Tokai Rubber Ind Ltd Mount with liquid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793600A (en) * 1986-03-14 1988-12-27 Bridgestone Corporation Vibration isolating apparatus
US4973031A (en) * 1986-09-16 1990-11-27 Bridgestone Corporation Anti-vibration apparatus

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