JPH0379580B2 - - Google Patents
Info
- Publication number
- JPH0379580B2 JPH0379580B2 JP58220109A JP22010983A JPH0379580B2 JP H0379580 B2 JPH0379580 B2 JP H0379580B2 JP 58220109 A JP58220109 A JP 58220109A JP 22010983 A JP22010983 A JP 22010983A JP H0379580 B2 JPH0379580 B2 JP H0379580B2
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- movable body
- partition member
- hole
- liquid chamber
- 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 - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 44
- 238000005192 partition Methods 0.000 claims description 15
- 238000013016 damping Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 9
- 239000013013 elastic material Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000006096 absorbing agent Substances 0.000 claims description 2
- 210000000078 claw Anatomy 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 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
- F16F13/10—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 the wall being at least in part formed by a flexible membrane or the like
- F16F13/105—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 the wall being at least in part formed by a flexible membrane or the like characterised by features of partitions between two working chambers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Description
【発明の詳細な説明】
［発明の利用分野］
本発明は振動源からの振動を減少させるための
防振装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a vibration isolator for reducing vibrations from a vibration source.
［背景技術］
一般的に防振ゴムと呼ばれる防振装置は、一例
として自動車のエンジンマウントに用いられて自
動車エンジンの振動を吸収し車体へ伝達させない
ようになつている。[Background Art] A vibration isolating device, generally called a vibration isolating rubber, is used, for example, in an engine mount of an automobile to absorb vibrations from the automobile engine and prevent the vibrations from being transmitted to the vehicle body.
この防振装置として２個の振動減衰液室を設
け、振動源からの振動を一方の液室の縮小力とし
て伝達し、この液室の液体を制限通路を通して他
の液室へ移動させる場合の内部摩擦に基づく抵抗
力によつて振動を吸収する構成が提案されてい
る。 Two vibration-damping liquid chambers are provided as this vibration isolator, and the vibration from the vibration source is transmitted as a contraction force to one of the liquid chambers, and when the liquid in this liquid chamber is moved to the other liquid chamber through the restriction passage. A structure has been proposed in which vibration is absorbed by a resistance force based on internal friction.
ところがこの防振装置は、入力される振動が例
えば50Hz以上の高周波である場合には、振幅が小
さく、制限通路が目づまり状態となつて内圧が上
昇しばね定数が高くなる。この結果、振動の伝達
率が上り、自動車の乗り心地が悪くなる原因とな
る。 However, in this vibration isolator, when the input vibration is a high frequency of 50 Hz or higher, for example, the amplitude is small, the restriction passage becomes clogged, the internal pressure rises, and the spring constant becomes high. As a result, the transmission rate of vibration increases, causing a worsening of the ride comfort of the vehicle.
［発明の目的］
本発明は上記事実を考慮し、高周波振動をも適
切に減衰させることができ、広範囲の振動減衰が
可能な防振装置を得ることが目的である。[Object of the Invention] Taking the above-mentioned facts into account, the present invention aims to provide a vibration isolating device that can appropriately attenuate even high-frequency vibrations and is capable of damping vibrations over a wide range.
［発明の概要］
本発明にかかる防振装置は振動発生部と振動受
部との間へ介在され、弾性材料の中空成形体から
主としてなる吸振主体の中空室を液室に充当し、
この液室を前記振動発生部又な振動受部へ固着さ
れた仕切部材により複数の液室に区画し、前記仕
切部材の中央部に形成した貫通孔へ所定量移動可
能に可動体を取りつけ、この可動体を両液室へ選
択的に突出可能として高周波振動を吸収するとと
もに、前記貫通孔から離隔していると共にこの貫
通孔を取り囲むように仕切部材の周縁部に沿つて
設けたオリフイスで両液室を連通して、このオリ
フイスに生じる液体流動の粘性抵抗に基づく減衰
作用を吸振主体の主として内部摩擦に基づく制振
作用に併用して振動の緩動に供するようになつて
いる。[Summary of the Invention] The vibration isolating device according to the present invention is arranged between a vibration generating part and a vibration receiving part, and uses a hollow chamber mainly for vibration absorption made of a hollow molded body of an elastic material as a liquid chamber,
The liquid chamber is divided into a plurality of liquid chambers by a partition member fixed to the vibration generating part or the vibration receiving part, and a movable body is attached to a through hole formed in the center of the partition member so as to be movable by a predetermined amount. This movable body can be selectively protruded into both liquid chambers to absorb high frequency vibrations, and an orifice is provided along the periphery of the partition member to surround the through hole and is spaced apart from the through hole. The liquid chamber is communicated with the orifice so that the damping effect based on the viscous resistance of the liquid flow generated in the orifice is used in combination with the damping effect mainly based on internal friction, which is the main vibration absorber, to slow down vibration.
特に仕切部材は振動発生部又は振動受部へ固着
されており、かつオリフイスはこの仕切部材へ設
けられているので、固定配置の仕切部材と、この
仕切部材と相対移動する可動体とが低周波振動と
高周波振動の振動吸収役割を確実に分担し、低周
波及び高周波の双方の振動を確実に吸収できる。 In particular, the partition member is fixed to the vibration generating part or the vibration receiving part, and the orifice is provided to this partition member, so that the fixedly arranged partition member and the movable body that moves relative to this partition member can generate low frequency waves. The role of absorbing vibrations is reliably shared between vibrations and high-frequency vibrations, and both low-frequency and high-frequency vibrations can be reliably absorbed.
［発明の実施例］
第１図には本発明が適用された防振装置の断面
図が示されている。[Embodiments of the Invention] FIG. 1 shows a sectional view of a vibration isolator to which the present invention is applied.
この防振装はエンジンマウントとして用いら
れ、底板１０には中央部ヘボルト１２が垂下固着
され図示しない車体への取付け用となつている。 This vibration isolator is used as an engine mount, and a bolt 12 is fixed to the center portion of the bottom plate 10 so as to be attached to a vehicle body (not shown).
この底板１０の外周部には円筒形状の接続板１
４の下端部が屈曲してかしめ固着されており、さ
らに底板１０と接続板１４との間には弾性体で形
成されるダイアフラム１６の周縁部が狭持されて
いる。底低１０の中央部とダイアフラム１６との
間は空気室１８を構成しており、ダイアフラム１
６が空気室１８の拡縮方向に変移可能となつてい
る。底低１０には連通孔１９を穿設して空気室１
８を外部と連通してもよい。 A cylindrical connecting plate 1 is provided on the outer periphery of the bottom plate 10.
The lower end of the diaphragm 4 is bent and fixed by caulking, and the peripheral edge of a diaphragm 16 made of an elastic material is sandwiched between the bottom plate 10 and the connecting plate 14. An air chamber 18 is formed between the center of the bottom 10 and the diaphragm 16.
6 is movable in the expansion/contraction direction of the air chamber 18. A communication hole 19 is bored in the bottom 10 to form an air chamber 1.
8 may be communicated with the outside.
接続板１４の上部には軸心が垂直とされた中空
成形体であるゴムからなる吸振主体２０の下端部
が固着されている。このゴムに代えて他の弾性材
料を用いることも当然可能である。 A lower end portion of a vibration absorbing main body 20 made of rubber and a hollow molded body whose axis is vertical is fixed to the upper part of the connecting plate 14. It is of course possible to use other elastic materials in place of this rubber.
吸振主体２０の上部には支持台２２が固着され
ており、この支持台２２の中央部にはボルト２４
が固着されて図示しないエンジンの搭載固定用と
なつている。 A support stand 22 is fixed to the upper part of the vibration absorbing main body 20, and a bolt 24 is attached to the center of the support stand 22.
is fixed to secure the mounting of an engine (not shown).
接続板１４、ダイアフラム１６及び吸振主体２
０によつて構成される中空室は液室２６であり、
水等の液体が充填されている。 Connection plate 14, diaphragm 16 and vibration absorbing main body 2
The hollow chamber constituted by 0 is the liquid chamber 26,
It is filled with liquid such as water.
液室２６内には仕切部材としてのブラケツト２
８が設けられて液室２６を上液室２６Ａと下液室
２６Ｂとに区画している。このブラケツト２８は
円筒形状であり、下端部が放射方向に延長されて
接続板１４とダイヤアラム１６との間へ狭持さ
れ、これによつて底板１０へ固定されている。ま
たこのブラケツト２８の上端部は軸心方向に屈曲
された平板頂部２８Ａの中央部とされている。こ
の平板頂部２８Ａには第２図にも示される如く貫
通孔である円孔３０が穿設されており、この円孔
３０へ可動体３２が取付けられている。 A bracket 2 as a partition member is provided in the liquid chamber 26.
8 is provided to divide the liquid chamber 26 into an upper liquid chamber 26A and a lower liquid chamber 26B. The bracket 28 has a cylindrical shape, and its lower end extends in the radial direction and is held between the connecting plate 14 and the diaphragm 16, thereby being fixed to the bottom plate 10. The upper end of this bracket 28 is the center of a flat plate top 28A bent in the axial direction. As shown in FIG. 2, a circular hole 30, which is a through hole, is bored in the top portion 28A of the flat plate, and a movable body 32 is attached to this circular hole 30.
この可動体３２は上可動体３４及び下可動体３
６からなつている。この上可動体３４は中間部３
４Ａが円孔３０よりも小径となつており、頂部に
は円孔３０の内径よりも大きなつば部３４Ｂが連
結されている。また中間部３４Ａの下端部には中
間部３４Ａよりも小径の接続軸３４Ｃが固着され
ている。また下可動体３６は接続軸３４Ｃが圧入
される孔３８を有しており、この圧入によつて上
可動体３４と下可動体３６とが固着され可動体３
２の外周へ凹部が形成されるようになつている。
この上可動体３４と下可動体３６の接続部には必
要に応じて接着材等を適用して両者の固着を確実
にすることができる。 This movable body 32 includes an upper movable body 34 and a lower movable body 3.
It consists of 6. The upper movable body 34 is
4A has a smaller diameter than the circular hole 30, and a flange portion 34B larger than the inner diameter of the circular hole 30 is connected to the top. Further, a connecting shaft 34C having a diameter smaller than that of the intermediate portion 34A is fixed to the lower end portion of the intermediate portion 34A. Further, the lower movable body 36 has a hole 38 into which the connecting shaft 34C is press-fitted, and this press-fitting fixes the upper movable body 34 and the lower movable body 36 to the movable body 34.
A recess is formed on the outer periphery of 2.
If necessary, an adhesive or the like can be applied to the connection portion between the upper movable body 34 and the lower movable body 36 to ensure that they are fixed together.
一例としてこの可動体３２は合成樹脂が適用可
能であり、曲け弾性率1000〜10000Kg／cm2とする
ことにより、高周波振動時のブラケツト２８との
衝突異音を防止できる。またこの可動体３２は液
室２６内への充填液体と類似の比重を有する材料
で製作して移動しやすくすることができる。さら
に、液室２６の内径と可動体３２の外径との比は
７０％以上であることが好ましい。 As an example, the movable body 32 can be made of synthetic resin, and by setting the bending elastic modulus to 1000 to 10000 Kg/cm 2 , it is possible to prevent noise caused by collision with the bracket 28 during high frequency vibration. Further, the movable body 32 can be made of a material having a similar specific gravity to the liquid filling the liquid chamber 26 to facilitate movement. Further, the ratio of the inner diameter of the liquid chamber 26 to the outer diameter of the movable body 32 is preferably 70% or more.
この可動体３２は第１図に示される如くつば部
３４Ｂがブラケツト２８の上方へすなわち上液室
２６Ａ内へ、下可動体３６がブラスケツト２８の
下方へ、すなわち下液室２６Ｂ内へ配置されるこ
とにより、ブラケツト２８へ保持されている。 As shown in FIG. 1, the movable body 32 has a collar 34B disposed above the bracket 28, that is, into the upper liquid chamber 26A, and a lower movable body 36 disposed below the bracket 28, that is, in the lower liquid chamber 26B. Thus, it is held in the bracket 28.
またこの可動体３２の中間部３４Ａはブラケツ
ト２８とこのブラケツト２８の下側へ固着される
当接板４０の合計肉厚よりも若干量長く形成され
ている（第１図寸法Ｌ）。従つてこの寸法差だけ
可動体３２がブラケツト２８に対して上下動で
き、つば部３４Ｂ及び可動体３６が上液室２６Ａ
及び下液室２６Ｂへ選択的に突出できるようにな
つている。この寸法は0.1〜１mmが適当である。 Further, the intermediate portion 34A of the movable body 32 is formed to be slightly longer than the total thickness of the bracket 28 and the abutment plate 40 fixed to the lower side of the bracket 28 (dimension L in FIG. 1). Therefore, the movable body 32 can move up and down with respect to the bracket 28 by this dimensional difference, and the collar 34B and the movable body 36 can move up and down relative to the upper liquid chamber 26A.
and can selectively protrude into the lower liquid chamber 26B. This dimension is suitably 0.1 to 1 mm.
当接板４０は第２図に詳細に示される如くブラ
ケツト２８の円孔３０と同一直径の同じく貫通孔
である円孔４２が穿設されており、外周部には円
筒体４４が接続されていて、これらの当接板４０
と円筒体４４とはブラケツト２８とともに仕切部
材の一部を構成している。この当接板４０と円筒
体４４との接続部は断面Ｌ字形に屈曲されて当接
板４０の軸回りにほぼ全周に亘つて形成される凹
部４６となつている。この凹部４６は当地板４０
の軸方向に見てＣ字状となつており、ブラケツト
２８の底面との間にリング状の空間を形成してい
る。この空間はブラケツト２８の平板頂部２８Ａ
へ形成される連通孔４８及び凹部４６の一部へ形
成される連通孔５０を介してそれぞれ上液室２６
Ａ及び下液室２６Ｂと連通されている。従つてこ
のブラスケツト２８と凹部４６との間に形成され
るＣ字状の空間は上液室２６Ａと下液室２６Ｂと
を連通させるオリフイス５２となつている。 As shown in detail in FIG. 2, the abutting plate 40 has a circular hole 42, which is also a through hole, having the same diameter as the circular hole 30 of the bracket 28, and a cylindrical body 44 is connected to the outer peripheral portion. These contact plates 40
The cylindrical body 44 and the bracket 28 constitute a part of the partition member. The connecting portion between the abutment plate 40 and the cylindrical body 44 is bent to have an L-shaped cross section and forms a recess 46 formed around the axis of the abutment plate 40 over almost the entire circumference. This recess 46 is located on the base plate 40.
It has a C-shape when viewed in the axial direction, and forms a ring-shaped space between it and the bottom surface of the bracket 28. This space is the flat plate top 28A of the bracket 28.
The upper liquid chamber 26 is connected to the upper liquid chamber 26 through a communication hole 48 formed in the upper liquid chamber 48 and a communication hole 50 formed in a part of the recess 46.
A and the lower liquid chamber 26B. Therefore, the C-shaped space formed between the bracket 28 and the recess 46 serves as an orifice 52 that communicates the upper liquid chamber 26A and the lower liquid chamber 26B.
次に本実施例の作用を説明する。底板１０はボ
ルト１２を介して自動車の車体へ固着され、支持
台２２ヘボルト２４によつて自動車エンジンを搭
載固着すれば組付けが完了する。 Next, the operation of this embodiment will be explained. The bottom plate 10 is fixed to the body of the automobile via bolts 12, and the assembly is completed by mounting and fixing the automobile engine to the support base 22 using the bolts 24.
エンジンの取付けに際してはエンジンの自重が
ボルト２４へ作用するので、液室２６Ａの圧力が
上昇する。この圧力はオリフイス５２を介して下
液室２６Ｂへ伝達され、空気室１８が縮小する。 When installing the engine, the weight of the engine acts on the bolt 24, so the pressure in the liquid chamber 26A increases. This pressure is transmitted to the lower liquid chamber 26B via the orifice 52, causing the air chamber 18 to contract.
エンジンの運転時にはエンジンに生ずる振動が
支持台２２を介して伝達される。吸振主体２０は
内部摩擦に基づく制振機能によつて振動を吸収す
ることができる。振動の周波数が低い場合には振
幅が大きく、上液室２６Ａまたは下液室２６Ｂの
液体がオリフイス５２を介して他方へ移動する場
合の粘性抵抗に基づく減衰作用で防振効果が向上
される。特にこの実施例ではオリフイス５２がＣ
字状とされて長い制限通路が形成されているので
吸振効果が大きい。 When the engine is in operation, vibrations generated in the engine are transmitted via the support base 22. The vibration absorbing main body 20 can absorb vibrations by a vibration damping function based on internal friction. When the frequency of vibration is low, the amplitude is large, and the vibration damping effect is improved by a damping effect based on viscous resistance when the liquid in the upper liquid chamber 26A or the lower liquid chamber 26B moves to the other via the orifice 52. Particularly in this embodiment, the orifice 52 is C
Since it is shaped like a letter and has a long restricted passage, it has a great vibration absorption effect.
また当接板４０をブラケツト２８へ溶接等によ
り取付ける場合に軸回りの相対角度を変更すれ
ば、このオリフイス５２の長さは任意に調節可能
である。 Further, when the contact plate 40 is attached to the bracket 28 by welding or the like, the length of the orifice 52 can be adjusted as desired by changing the relative angle around the axis.
またエンジンの振動が例えば５０Hz以上の高周
波である場合には、振幅が小さいのでオリフイス
５２は目づまり状態となる可能性がある。しかし
この場合には可動体３２が寸法Ｌだけ上下動可能
となつているのでこの微小振動によつて上液室２
６Ａまたは下液面２６Ｂへの体積変化が生じ、こ
れによつて圧力上昇が制御されて高周波低振幅時
における低動ばね定数が得られる。 Further, when the engine vibration has a high frequency of, for example, 50 Hz or more, the amplitude is small and the orifice 52 may become clogged. However, in this case, since the movable body 32 can move up and down by the dimension L, the upper liquid chamber 2
6A or the lower liquid level 26B, which controls the pressure rise and provides a low dynamic spring constant at high frequency and low amplitude.
なお上記実施例では可動体３２の外周へ形成さ
れた凹部と平板頂部２８Ａとの嵌合部分は、可動
体３２の全周にわたつて形成したが、これは可動
体３２の周囲の一部分であつても構わない。 In the above embodiment, the fitting portion between the recess formed on the outer periphery of the movable body 32 and the flat plate top portion 28A is formed over the entire circumference of the movable body 32, but this is only a part of the periphery of the movable body 32. I don't mind.
第３図には本発明の第２実施例に係る可動体３
２が示されている。この実施例の可動体３２では
上可動体３５が前記第１実施例の中間部３４Ａと
つば部３４Ｂとを具備しており、中間部３４Ａの
下端部から係合爪６０が突出されている。この係
合爪６０は下可動体３６に形成される貫通小孔６
２と対応しており、係合爪６０がこの貫通小孔６
２を貫通して貫通小孔６２の底面と係合すること
により上可動体３４と下可動体３６とが一体に組
立てられるようになつている。従つてこの実施例
の可動体３２は単に両者を接近させるのみで組付
け可能となつている。 FIG. 3 shows a movable body 3 according to a second embodiment of the present invention.
2 is shown. In the movable body 32 of this embodiment, the upper movable body 35 includes the intermediate portion 34A and the collar portion 34B of the first embodiment, and an engaging claw 60 projects from the lower end of the intermediate portion 34A. This engaging claw 60 is a small through hole 6 formed in the lower movable body 36.
2, and the engaging claw 60 corresponds to this small through hole 6.
The upper movable body 34 and the lower movable body 36 are assembled together by penetrating through 2 and engaging with the bottom surface of the small through hole 62. Therefore, the movable body 32 of this embodiment can be assembled by simply bringing the two parts close to each other.
次に第４図には本発明の第３実施例に係る可動
体３２が示されている。この実施例では上可動体
３４が円板形状とされており、この上可動体３４
の下端部から段付ピン６４が突出している。この
段付ピン６４の先端小径部は下可動体３６の貫通
小孔６６内へ挿入された後に先端部が下可動体３
６の下方で変形されることにより上可動体３４と
下可動体３６とが立体的に組立てられるようにな
つている。 Next, FIG. 4 shows a movable body 32 according to a third embodiment of the present invention. In this embodiment, the upper movable body 34 has a disk shape, and the upper movable body 34
A stepped pin 64 projects from the lower end. The small diameter portion of the tip of the stepped pin 64 is inserted into the small through hole 66 of the lower movable body 36, and then the tip portion is inserted into the small through hole 66 of the lower movable body 36.
By being deformed below 6, the upper movable body 34 and the lower movable body 36 are assembled three-dimensionally.
上記各実施例の他にも各種の可動体３２が適用
可能である。 Various types of movable bodies 32 can be applied in addition to the above embodiments.
［発明の効果］
以上説明した如く本発明に係る防振装置では、
固定的に配置した仕切部材の中央部に形成した貫
通孔へ可動体を所定量移動可能に取付けて両液室
へ選択的に突出可能とすると供に、この仕切部材
へ可動体を取り囲むようにして仕切部材の周縁部
に沿つてオリフイスを設けたので低周波振動及び
高周波振動を共に確実に吸収可能となる優れた効
果を有する。[Effect of the invention] As explained above, in the vibration isolating device according to the present invention,
A movable body is mounted so as to be movable by a predetermined amount into a through hole formed in the center of a fixedly arranged partition member so as to be able to selectively protrude into both liquid chambers, and the movable body is surrounded by the partition member. Since the orifice is provided along the peripheral edge of the partition member, it has an excellent effect of reliably absorbing both low-frequency vibrations and high-frequency vibrations.
第１図は本発明に係る防振装置の第１実施例を
示す断面図、第２図は第１実施例に用いるブラケ
ツト及び可動体を示す分解斜視図、第３図及び第
４図は本発明の第２、３実施例を示す可動体の分
解断面図である。
２０……吸振主体、２６……液室、２８……ブ
ラケツト、３２……可動体、３４……上可動体、
３６……下可動体、５２……オリフイス。
Fig. 1 is a sectional view showing a first embodiment of the vibration isolator according to the present invention, Fig. 2 is an exploded perspective view showing a bracket and a movable body used in the first embodiment, and Figs. FIG. 7 is an exploded sectional view of a movable body showing second and third embodiments of the invention. 20... Vibration absorbing main body, 26... Liquid chamber, 28... Bracket, 32... Movable body, 34... Upper movable body,
36... lower movable body, 52... orifice.
Claims (1)
性材料の中空成形体から主としてなる吸振主体の
中空室を液室に充当し、 この液室を前記振動発生部又は振動受部へ固着
された仕切部材により複数の液室に区画し、 前記仕切部材の中央部に形成した貫通孔へ所定
量移動可能に可動体を取りつけ、この可動体を両
液室へ選択的に突出可能として高周波振動を吸収
するとともに、 前記貫通孔から離隔していると共にこの貫通孔
を取り囲むように仕切部材の周縁部に沿つて設け
たオリフイスで両液室を連通して、このオリフイ
スに生じる液体流動の粘性抵抗に基づく減衰作用
を吸振主体の主として内部摩擦に基づく制振作用
に併用して振動の緩衝に供することを特徴とした
防振装置。[Scope of Claims] 1. A hollow chamber mainly made of a hollow molded body of an elastic material and mainly used as a vibration absorbing body is interposed between the vibration generating part and the vibration receiving part, and is used as a liquid chamber. Alternatively, a plurality of liquid chambers are divided by a partition member fixed to the vibration receiving part, a movable body is attached to a through hole formed in the center of the partition member so as to be movable by a predetermined amount, and this movable body is selected for both liquid chambers. The liquid chambers are connected to each other by an orifice that is separated from the through hole and is provided along the peripheral edge of the partition member so as to surround the through hole. A vibration isolating device characterized in that a damping effect based on the viscous resistance of a liquid flow generated in a vibration absorber is used in combination with a damping effect mainly based on internal friction to buffer vibrations.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22010983A JPS60113835A (en) | 1983-11-22 | 1983-11-22 | Vibro-isolating device |
| EP19840109671 EP0133588B1 (en) | 1983-08-15 | 1984-08-14 | Vibration isolating device and system |
| DE8484109671T DE3480421D1 (en) | 1983-08-15 | 1984-08-14 | Vibration isolating device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22010983A JPS60113835A (en) | 1983-11-22 | 1983-11-22 | Vibro-isolating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60113835A JPS60113835A (en) | 1985-06-20 |
| JPH0379580B2 true JPH0379580B2 (en) | 1991-12-19 |
Family
ID=16746049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22010983A Granted JPS60113835A (en) | 1983-08-15 | 1983-11-22 | Vibro-isolating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60113835A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1226230A (en) * | 1983-11-23 | 1987-09-01 | Richard A. Muzechuk | Hydraulic-elastomeric mount |
| JPH0754131B2 (en) * | 1984-09-07 | 1995-06-07 | 株式会社ブリヂストン | Anti-vibration device |
| JPS62215141A (en) * | 1986-03-14 | 1987-09-21 | Bridgestone Corp | Vibration isolating device |
| CA1297507C (en) * | 1986-07-16 | 1992-03-17 | Richard Paul Thorn | Fluid filled vibration isolator having plural tunable dynamic stiffnesses |
| US4861006A (en) * | 1986-09-16 | 1989-08-29 | Bridgestone Corporation | Anti-vibration apparatus |
| JPH02225837A (en) * | 1989-02-27 | 1990-09-07 | Bridgestone Corp | Vibration isolator |
| JPH0510373A (en) * | 1991-07-08 | 1993-01-19 | Bridgestone Corp | Vibration-proof device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138423A (en) * | 1981-02-17 | 1982-08-26 | Nissan Motor Co Ltd | Engine mount device filled with fluid |
-
1983
- 1983-11-22 JP JP22010983A patent/JPS60113835A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57138423A (en) * | 1981-02-17 | 1982-08-26 | Nissan Motor Co Ltd | Engine mount device filled with fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60113835A (en) | 1985-06-20 |
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