JPH02225838A - Vibration isolator - Google Patents
Vibration isolatorInfo
- Publication number
- JPH02225838A JPH02225838A JP4620589A JP4620589A JPH02225838A JP H02225838 A JPH02225838 A JP H02225838A JP 4620589 A JP4620589 A JP 4620589A JP 4620589 A JP4620589 A JP 4620589A JP H02225838 A JPH02225838 A JP H02225838A
- Authority
- JP
- Japan
- Prior art keywords
- bottom plate
- plate
- vibration
- liquid chamber
- vibration isolator
- 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 40
- 239000000463 material Substances 0.000 abstract 3
- 238000009434 installation Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000009751 slip forming Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Combined Devices Of Dampers And Springs (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は振動源からの振動を制限通路を通過する液体の
通過抵抗で減少させ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 reduces vibrations from a vibration source by using passage resistance of liquid passing through a restriction passage.
［従来の技術］
一般的に防振ゴムと呼ばれる防振装置は、自動車のエン
ジンマウント等に用いられて自動車エンジンの振動を吸
収して振動を車体へ伝達させないようになっている。[Prior Art] A vibration isolating device, generally called a vibration isolating rubber, is used in an automobile engine mount or the like to absorb the vibrations of the automobile engine and prevent the vibrations from being transmitted to the vehicle body.
この防振装置で内部に液室を設けたものにおいては、液
体がオリフィス内を通過する場合の粘性抵抗に基づく減
衰作用で防振効果を向上させるようになっている（特開
昭６０−４０８４３号）。In this vibration isolating device that has a liquid chamber inside, the vibration isolating effect is improved by a damping effect based on viscous resistance when the liquid passes through the orifice (Japanese Patent Laid-Open No. 60-40843 issue).
第６図に示す如く、この種の防振装置１００は円筒状の
接続板１０２のフランジ部１０２Ａを略皿状の底板１０
４のフランジ部１０４Ａにかしめることにより液室１０
６を密閉すると共に、液室１０６の隔壁を形成するダイ
ヤフラム１０８の外周部１０８Ａを押圧し、液室１０６
の密閉性を保っている。As shown in FIG. 6, in this type of vibration isolator 100, a flange portion 102A of a cylindrical connection plate 102 is connected to a substantially dish-shaped bottom plate 102A.
By caulking the flange portion 104A of 4, the liquid chamber 10
6 and presses the outer peripheral part 108A of the diaphragm 108 that forms the partition wall of the liquid chamber 106.
maintains airtightness.
しかし、接続板１０２のフランジ部１０２Ａを底板１０
４のフランジ部１０４Ａにかしめるには別途に用意する
かしめ治具でかしめ作業を行わなければならない。However, the flange portion 102A of the connection plate 102 is
In order to caulk the flange portion 104A of No. 4, the caulking work must be performed using a separately prepared caulking jig.
従って、外形が複雑な防振装置においてはかしめ治具を
最適な位置にセットできないため、かしめ加工を確実に
できない場合がある。Therefore, in a vibration isolating device with a complex external shape, the caulking jig cannot be set at an optimal position, and therefore the caulking process may not be performed reliably.
このため、防振装置のシール性が完全でない場合は、液
室からの液漏れ等の虞れがあり防振装置の品質が低下す
る虞れがある。Therefore, if the sealing performance of the vibration isolator is not perfect, there is a risk of liquid leakage from the liquid chamber, and the quality of the vibration isolator may deteriorate.
また、かしめ作業を行う場合は前記接続板、底板に外側
に延設されるかしめ代としてのフランジ部を設ける必要
があるので防振装置の小型化、コンパクト化を図ること
が困難である。In addition, when caulking is performed, it is necessary to provide a flange portion extending outward on the connecting plate and the bottom plate as a caulking margin, making it difficult to make the vibration isolator smaller and more compact.
［発明が解決しようとする課題］
本発明は上記事実を考慮し、液室の密封用としてかしめ
治具を用いてのかしめ作業を必要としないで製造できる
防振装置を提供することが目的である。[Problems to be Solved by the Invention] In consideration of the above facts, the present invention aims to provide a vibration isolating device that can be manufactured without requiring caulking work using a caulking jig for sealing a liquid chamber. be.
し課題を解決するための手段］
本発明は、内部に吸振用液室が設けられた筒状体と、こ
の筒状体へ取り付けられて前記液室を密封する閉止部材
とを有する防振装置であって、前記筒状体には第１の内
径部の液室と反対側に第１の内径部よりも小径の第２の
内径部が設けられ、この第１の内径部を閉止部材の取付
部とすると共に、前記閉止部材の外径を前記第１の内径
部より大寸法とした構成とした。[Means for Solving the Problems] The present invention provides a vibration isolator having a cylindrical body provided with a vibration-absorbing liquid chamber therein, and a closing member attached to the cylindrical body to seal the liquid chamber. The cylindrical body is provided with a second inner diameter part having a smaller diameter than the first inner diameter part on the opposite side of the liquid chamber of the first inner diameter part, and this first inner diameter part is connected to the closing member. In addition to serving as a mounting portion, the outer diameter of the closing member is larger than the first inner diameter portion.
［作用］
上記構成の本発明では、防振装置の構成部材であって、
吸振用液体が設けられた筒状体に、この筒状体の取付部
に形成された第１の内径部より大寸法の閉止部材を圧入
することにより防振装置を形成できるので、筒状体と閉
止部材との連結をかしめ治具を用いてのかしめ作業を必
要としないで行うことができる。[Function] In the present invention having the above configuration, the constituent members of the vibration isolator include:
The vibration isolating device can be formed by press-fitting a closing member having a larger dimension than the first inner diameter portion formed in the attachment part of the cylindrical body into the cylindrical body provided with the vibration-absorbing liquid. and the closing member can be connected without the need for caulking work using a caulking jig.
［第１実施例コ
第１図には本発明に係る防振装置１０の第１実施例の断
面図が示されている。[First Embodiment] FIG. 1 shows a sectional view of a first embodiment of a vibration isolator 10 according to the present invention.
この防振装置１０はエンジンマウントとして用いられ、
閉止部材としての底板１１には中央部へボルト１２が垂
下固着され図示しない車体への取付用となっている。前
記底板１１は熱処理を施されており、高荷重を加えるこ
とにより防振装置１０の軸線方向に対し直交方向（第１
図上下方向）へ弾性変形するようになっている。This vibration isolator 10 is used as an engine mount,
A bolt 12 is fixed to the bottom plate 11 as a closing member by hanging down from the center thereof, and is used for attachment to a vehicle body (not shown). The bottom plate 11 is heat-treated, and by applying a high load, the bottom plate 11 is heated in a direction perpendicular to the axial direction of the vibration isolator 10 (the first
It is designed to be elastically deformed in the vertical direction (in the figure).
第１図及び第２図に示す如くこの底板１１は円形でその
外周部には徐々に拡開した立上部１４が形成されている
。この立上部１４には底板１１の軸線方向に対して直交
方向に係止Ｂ１６が連続して形成され係止部１６の上面
でダイヤフラム２４の外周１ｍ２４Ａを押圧するように
なっている。この外周１ｍ２４Ａには第１図に示す如く
ガイド金具２４Ｂが埋設されている。このガイド金具２
４Ｂはリング状に形成されダイヤフラム２４の外周部２
４Ａの形状を常に円形状に維持するようになっている。As shown in FIGS. 1 and 2, the bottom plate 11 is circular and has a raised portion 14 formed on its outer periphery, which gradually widens. A locking portion B16 is continuously formed on this rising portion 14 in a direction perpendicular to the axial direction of the bottom plate 11, and the upper surface of the locking portion 16 presses the outer circumference 1 m24A of the diaphragm 24. As shown in FIG. 1, a guide fitting 24B is embedded in this outer circumference of 1 m24A. This guide metal fitting 2
4B is a ring-shaped outer peripheral portion 2 of the diaphragm 24;
The shape of 4A is always kept circular.
まｔζ、前記係止部１６の先端にはボルト１２方向へ僅
かに折り返された先端１１６Ａが形成されている。Also, a tip 116A is formed at the tip of the locking portion 16, which is slightly folded back toward the bolt 12.
この先端１１１６Ａは筒状体としての接続板１８の下端
部１８Ａと係止されている。即ち、前記底板１１の先端
部１６Ａは接続板１８の下端部１８Ａの内周面に防振装
置１０の軸線方向に対して直交に一周して形成された断
面三角形状の切欠溝２０に嵌合されるようになっている
。この切欠溝２０同士の対向寸法Ｍは底板１１の直径寸
法Ｎより僅かに小寸法となるように設定され、切欠溝２
０に底板１１が確実に嵌合されるようになっている。This tip 1116A is engaged with the lower end 18A of the connecting plate 18 as a cylindrical body. That is, the tip portion 16A of the bottom plate 11 fits into a notch groove 20 having a triangular cross section that is formed on the inner circumferential surface of the lower end portion 18A of the connection plate 18 so as to go around the vibration isolator 10 at right angles to the axial direction. It is now possible to do so. The facing dimension M between the notch grooves 20 is set to be slightly smaller than the diameter dimension N of the bottom plate 11, and the notch grooves 20
The bottom plate 11 is securely fitted to the bottom plate 0.
前記接続板１８の中間部１８Ｂの内周面には段部２２が
形成され、接続板１８の中間部１８Ｂの内径寸法は下端
部１８Ａの内径寸法より小に形成されている。この段部
２２と底板１１の係止部１６との間には弾性体で形成さ
れ液室３４の隔壁となるダイヤフラム２４の外周部２４
Ａが挟持されている。前記底板１１とダイヤフラム２４
の中間部との間は空気室２６が形成されており、ダイヤ
フラム２４の中間部が空気室２６の拡縮方向（第１図上
下方向）に変移可能となっている。また、空気室２６を
外気と連通ずるための貫通孔（図示省略）が必要に応じ
て底板１１へ形成されるようになっている。A stepped portion 22 is formed on the inner peripheral surface of the intermediate portion 18B of the connecting plate 18, and the inner diameter of the intermediate portion 18B of the connecting plate 18 is smaller than the inner diameter of the lower end portion 18A. An outer peripheral portion 24 of a diaphragm 24 is formed of an elastic material between the stepped portion 22 and the locking portion 16 of the bottom plate 11 and serves as a partition wall of the liquid chamber 34.
A is being held. The bottom plate 11 and the diaphragm 24
An air chamber 26 is formed between the diaphragm 24 and the intermediate portion of the diaphragm 24, and the intermediate portion of the diaphragm 24 is movable in the expansion/contraction direction of the air chamber 26 (vertical direction in FIG. 1). Further, a through hole (not shown) for communicating the air chamber 26 with the outside air is formed in the bottom plate 11 as necessary.
接続板１８の上部に形成される拡径部１８Ｃには軸心が
垂直とされた成形体であるゴムからなる吸振主体２８の
下端外周部が加硫接着されている。The lower end outer circumference of a vibration absorbing main body 28 made of rubber and a molded body whose axis is perpendicular is vulcanized and bonded to the enlarged diameter portion 18C formed on the upper part of the connection plate 18.
吸振主体２８の中央部には支持台３０が加硫接着されて
おり、この支持台３０の中央部にはボルト、３２が固着
されて図示しないエンジンの搭載固定用となちている。A support base 30 is vulcanized and bonded to the center of the vibration absorbing main body 28, and a bolt 32 is fixed to the center of the support base 30 for mounting and fixing an engine (not shown).
接続板１８、ダイヤフラム２４及び吸振主体２８によっ
て構成される中空室は液室３４とされ、シリコンオイル
等の液体が充填されている。A hollow chamber formed by the connecting plate 18, the diaphragm 24, and the vibration absorbing main body 28 is a liquid chamber 34, and is filled with a liquid such as silicone oil.
液室３４内にはオリフィスの構成部材である当接板３６
及びブラケット３８がスポット溶接で固着された状態で
設けられて前記液室３４を上液室３４Ａと上液室３４Ｂ
とに区画している。Inside the liquid chamber 34, there is a contact plate 36 that is a component of the orifice.
A bracket 38 is fixed by spot welding to connect the liquid chamber 34 to the upper liquid chamber 34A and the upper liquid chamber 34B.
It is divided into
第３図に示す如くこのブラケット３８は筒形状であり、
下端部（第３図下側）からフランジ部３８Ａが放射方向
に延長されている。このフランジ部３８Ａは前記接続板
１８の段部２２と底板１１の係止部１６とによって挟持
固定されるようになっている（第１図参照）。またこの
ブラケット３８の上端部は軸心方向に屈曲された平板頂
部３８Ｂとされている。この平板頂８３８Ｂの中央部に
は第３図にも示す如く円孔４０が穿設されて詣り、この
円孔４０へは可動体４２が一定量移動可能な状態で取り
付けられている。As shown in FIG. 3, this bracket 38 has a cylindrical shape,
A flange portion 38A extends radially from the lower end portion (lower side in FIG. 3). The flange portion 38A is clamped and fixed by the step portion 22 of the connecting plate 18 and the locking portion 16 of the bottom plate 11 (see FIG. 1). Further, the upper end portion of this bracket 38 is a flat plate top portion 38B bent in the axial direction. As shown in FIG. 3, a circular hole 40 is bored in the center of the flat plate top 838B, and a movable body 42 is attached to the circular hole 40 so as to be movable by a certain amount.
この可動体４２は上回動体４４及び下回動体４６からな
っている。この上回動体４４は軸方向中間部４４Ａが円
孔４０よりも小径となって右り、頂部には円孔４０より
も大径なつば部４４Ｂが連続している。また、下端部に
は中間部４４Ａよりも小径の接続部４４Ｇが連続形成さ
れている。The movable body 42 includes an upper movable body 44 and a lower movable body 46. The upper movable body 44 has an axially intermediate portion 44A having a smaller diameter than the circular hole 40 and is oriented toward the right, and a flange portion 44B having a larger diameter than the circular hole 40 continues at the top. Further, a connecting portion 44G having a diameter smaller than that of the intermediate portion 44A is continuously formed at the lower end portion.
第３図に示す如く下回動体４６は円板状とされ、中央部
には前記接続部４４Ｃが圧入される貫通孔４８が穿設さ
れており、この貫通孔４８に接続部４４Ｃを圧入するこ
とによ；て上回動体４４と下回動体４６とが固着されて
可動体４２が形成されるようになっている。As shown in FIG. 3, the lower movable body 46 has a disk shape, and has a through hole 48 in the center thereof into which the connecting portion 44C is press-fitted. Particularly, the upper movable body 44 and the lower movable body 46 are fixedly attached to form the movable body 42.
前記可動体４２は第１図に示される如くつば部４４Ｂが
上液室３４Ａ内へ、下回動体４６が上液室３４Ｂ内へ配
置されるようになっている。As shown in FIG. 1, the movable body 42 is arranged such that the collar 44B is disposed within the upper liquid chamber 34A, and the lower movable body 46 is disposed within the upper liquid chamber 34B.
またこの可動体４２の中間部４４Ａはブラケット３８と
当接板３６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）。従ってこの寸法差だけ可動体４２が
上下動でき、上液室３４Ａ及び上液室３４Ｂを若干量だ
け拡縮可能としている。Further, the intermediate portion 44A of the movable body 42 is formed to be slightly longer than the total thickness of the bracket 38 and the abutment plate 36 (dimension L in FIG. 1). Therefore, the movable body 42 can move up and down by this dimensional difference, and the upper liquid chamber 34A and the upper liquid chamber 34B can be expanded and contracted by a certain amount.
前記当接板３６も第３図に示される如く筒状に形成され
ている。当接板３６の上端に形成された平板頂１１３６
Ａの中央にはブラケット３８の円孔４０と同一直径の円
孔５０が穿設されて可動体４２の取付用となっている。The abutting plate 36 is also formed into a cylindrical shape as shown in FIG. A flat plate top 1136 formed at the upper end of the abutting plate 36
A circular hole 50 having the same diameter as the circular hole 40 of the bracket 38 is bored in the center of A, and is used for mounting the movable body 42.
当接板３６の下端部にはフランジ部３６Ｂが放射方向に
延長されており、このフランジ部３６Ｂも前記ダイヤフ
ラム２４の外周部２４Ａ及びブラケット３８のフランジ
部３８Ａと共に底板１１の係止部１６と接続板１８の段
部２２とによって挟持固定される。A flange portion 36B extends in the radial direction at the lower end of the contact plate 36, and this flange portion 36B is also connected to the locking portion 16 of the bottom plate 11 together with the outer peripheral portion 24A of the diaphragm 24 and the flange portion 38A of the bracket 38. It is clamped and fixed by the stepped portion 22 of the plate 18.
第３図に示す如く当接板３６の平板頂部３６Ａの外周部
には当接板３６の軸線回りに一部を残して凹部５２が形
成されている。As shown in FIG. 3, a recess 52 is formed around the axis of the abutting plate 36 on the outer periphery of the flat plate top portion 36A of the abutting plate 36, with a portion remaining.
この凹部５２はブラケット３８方向から見ると略Ｃ字状
となっており、ブラケット３８の平板頂部３８Ｂとの間
に隙間を形成するようになっている。この隙間はブラケ
ット３８の平板頂部３８Ｂへ形成される長円状の連通孔
５４及び当接板３６の凹部５２の一部へ形成される長円
状の連通孔５６を介してそれぞれ上液室３４Ａ及び上液
室３４Ｂと連通されている。従って、この隙間は上液室
３４Ａと上液室３４Ｂとを連通させる制限通路であるオ
リフィス５８となっている。This recessed portion 52 has a substantially C-shape when viewed from the direction of the bracket 38, and forms a gap between it and the flat plate top portion 38B of the bracket 38. This gap is formed in the upper liquid chamber 34A through an oblong communication hole 54 formed in the flat plate top 38B of the bracket 38 and an oblong communication hole 56 formed in a part of the recess 52 of the contact plate 36. and the upper liquid chamber 34B. Therefore, this gap serves as an orifice 58 that is a restriction passage that allows communication between the upper liquid chamber 34A and the upper liquid chamber 34B.
次に実施例の作用を説明する。Next, the operation of the embodiment will be explained.
防振装置１０を製造する場合は粘性液体が満たされた容
器の中に防振装置１０の構成部材である底板１１、予め
吸振主体２８、支持台３０が取り付けられた接続板１８
、ダイヤフラム２４等を入れて、吸振主体２８が加硫接
着された接続板１８の内部に当接板３６と一体となった
ブラケット３８を配設する。次に、当接板３６のフラン
ジ部３６Ｂをダイヤフラム２４の外周部２４Ａへ当接さ
せる。この状態では第４図に示す如くブラケット３８の
フランジ部３８Ａ１当接板３６のフランジ部３６Ｂ及び
ダイヤフラム２４の外周部２４Ａは接続板１８に形成れ
た段部２２に係止されるので、ブラケット３８等は支持
台３０方向（第４図上側）への移動を阻止される。When manufacturing the vibration isolator 10, a bottom plate 11, which is a component of the vibration isolator 10, a connection plate 18 to which a vibration absorbing main body 28 and a support base 30 are attached in advance are placed in a container filled with viscous liquid.
, a diaphragm 24 and the like are inserted, and a bracket 38 integrated with an abutting plate 36 is disposed inside the connecting plate 18 to which the vibration absorbing main body 28 is vulcanized and bonded. Next, the flange portion 36B of the contact plate 36 is brought into contact with the outer peripheral portion 24A of the diaphragm 24. In this state, as shown in FIG. 4, the flange portion 38A of the bracket 38, the flange portion 36B of the contact plate 36, and the outer peripheral portion 24A of the diaphragm 24 are locked to the step portion 22 formed on the connecting plate 18, so that the bracket 38 etc. are prevented from moving in the direction of the support stand 30 (upper side in FIG. 4).
、ここで、さらに底板ＩＩを接続板１８の内部に嵌入さ
せる。この場合底板１１は弾性変形可能なため防振装置
１０の軸線方向に対し直交方向（矢印へ方向）へ撓ませ
ることが可能となっているので第４図に示す如（矢印Ｃ
方向に高圧力を加えると係止部１６は接続板１８の下端
部１８Ａの内周面に案内されて底板１１の直径は接続板
１８の下端部１８Ａの内周直径より小となる。, Here, the bottom plate II is further fitted into the inside of the connection plate 18. In this case, since the bottom plate 11 is elastically deformable, it can be bent in the direction perpendicular to the axial direction of the vibration isolator 10 (in the direction of the arrow), as shown in FIG.
When high pressure is applied in this direction, the locking portion 16 is guided by the inner peripheral surface of the lower end 18A of the connecting plate 18, and the diameter of the bottom plate 11 becomes smaller than the inner peripheral diameter of the lower end 18A of the connecting plate 18.
この状態で底板１１を接続板１８内に挿入して底板１１
の係止部１６の上面とダイヤフラム２４の外周部２４Ａ
下面が当接する位置まで底板１１を押圧して移動させる
。そして、底板１１の係止部１６の先端１ｆｆｌ１６Ａ
が切欠溝２０に対応すると、撓んでいた底板１１は切欠
溝２０の寸法だけ接続板１８の内周面による制限が解除
されるので先端部１６Ａは弾性的に復帰して切欠溝２０
に嵌入する。このため底板１１と接続板１８とは強固に
嵌合係止されることにより、防振装置ｌＯが完成する。In this state, insert the bottom plate 11 into the connection plate 18 and
The upper surface of the locking portion 16 and the outer peripheral portion 24A of the diaphragm 24
The bottom plate 11 is pressed and moved to a position where the bottom surface makes contact. Then, the tip 1ffl16A of the locking part 16 of the bottom plate 11
When the bottom plate 11 corresponds to the notch groove 20, the restriction of the inner peripheral surface of the connecting plate 18 by the dimension of the notch groove 20 is released, and the tip 16A elastically returns to the notch groove 20.
to be inserted into. Therefore, the bottom plate 11 and the connecting plate 18 are firmly fitted and locked, thereby completing the vibration isolating device IO.
また、上述したように当接板３６のフランジ部３６Ｂに
はダイヤフラム２４の外周部２４Ａが確実に当接され、
ダイヤフラム２４の外周部２４Ａは底板１１の係止部１
６に押圧されるので液室３４から液体が漏れることを確
実に阻止できるためシール性が劣ることはない。Further, as described above, the outer peripheral portion 24A of the diaphragm 24 is reliably brought into contact with the flange portion 36B of the contact plate 36,
The outer peripheral portion 24A of the diaphragm 24 is connected to the locking portion 1 of the bottom plate 11.
6, it is possible to reliably prevent liquid from leaking from the liquid chamber 34, so that there is no deterioration in sealing performance.
上記のようにして製造された本発明に係る防振装置１０
の底板１１はボルト１２を介して自動車の車体へ固着さ
れ、支持台３０ヘボルト３２によって自動車エンジンを
搭載固着すれば組付けが完了する。Vibration isolator 10 according to the present invention manufactured as described above
The bottom plate 11 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 30 using the bolts 32.
エンジンの取り付けに際してはエンジンの自重がボルト
３２へ作用するので、上液室３４Ａの圧力が上昇する。When installing the engine, the weight of the engine acts on the bolt 32, so the pressure in the upper liquid chamber 34A increases.
この圧力はオリフィス５８を介して下肢室３４Ｂへ伝達
され、空気室２６が縮小する。This pressure is transmitted to the leg chamber 34B via the orifice 58, causing the air chamber 26 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３
０を介して吸振主体２８に伝わるが吸振主体２８は内部
摩擦に基づく制振機能によっ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３４Ａ又は下肢室３−４Ｂに充填されている粘性液体
がオリフィス５８−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ようにな
っている。When the engine is running, vibrations generated in the engine are transmitted to the support base 3.
The vibration is transmitted to the vibration absorbing main body 28 through 0, but the vibration absorbing main body 28 can absorb the vibration by a damping function based on internal friction. When the frequency of vibration is low, the amplitude is large, and the vibration is prevented by a damping effect based on viscous resistance when the viscous liquid filled in the upper liquid chamber 34A or the lower limb chamber 3-4B moves to the other side via the orifice 58-. The vibration effect has been improved.
［第２実施例］
第５図には本発明に係る防振装置ＩＯの第２実施例が示
されている。[Second Embodiment] FIG. 5 shows a second embodiment of the vibration isolator IO according to the present invention.
第５図に示す如く、この実施例においては底板ＩＩには
ポル［２は固定されておらず、接続板１８の中間部１８
Ｂに取り付けられた取付ブラケット９０にボルト９４が
固定されるようになっている。As shown in FIG. 5, in this embodiment, the pole [2 is not fixed to the bottom plate II, and the intermediate portion 18 of the connecting plate 18
A bolt 94 is fixed to a mounting bracket 90 attached to B.
即ち、ボルト９４は取付ブラケット９０に形成されたボ
ルト孔９２に挿入固着されており、このボルト９４が図
示しない自動車の車体へ固着されるようになっている。That is, the bolt 94 is inserted and fixed into a bolt hole 92 formed in the mounting bracket 90, and this bolt 94 is fixed to the body of an automobile (not shown).
なお、この実施例では接続板１８を挟んで第５図左右方
向に夫々ボルト９４を設けたが、ボルト９４は単一又は
３個以上設けてもよい。In this embodiment, bolts 94 are provided in the left and right directions in FIG. 5 with the connection plate 18 in between, but a single bolt 94 or three or more bolts 94 may be provided.
［発明の効果コ
以上説明した如く、本発明に係る防振装置では、かしめ
作業を簡素化にしたので、複雑な外形の防振装置であっ
ても容易に製造できるので製品のコストダウンを図るこ
とができるという効果を有する。[Effects of the Invention] As explained above, in the vibration isolator according to the present invention, the caulking work is simplified, so even a vibration isolator with a complicated external shape can be manufactured easily, thereby reducing the cost of the product. It has the effect of being able to
また、かしめ作業を簡素化にしたことにより製品の小型
化、コンパクト化を図ることができるという効果を有す
る。Furthermore, by simplifying the caulking work, it is possible to make the product smaller and more compact.
第１図乃至第４図には本発明に係る防振装置の第１実施
例が示され、第１図は断面図、第２図は底板の全体斜視
図、第３図はブラケット及び当接板の全体斜視図、第４
図は作用説明図、第５図は本発明に係る防振装置の第２
実施例を示す断面図、第６図は従来の防振装置の断面図
である。
１０・・・防振装置、
１１・・・底板、
１８・・・接続板、
３４・・・液室。1 to 4 show a first embodiment of the vibration isolator according to the present invention, in which FIG. 1 is a sectional view, FIG. 2 is a perspective view of the entire bottom plate, and FIG. 3 is a bracket and abutment. Overall perspective view of the plate, 4th
The figure is an action explanatory diagram, and Figure 5 is a second diagram of the vibration isolating device according to the present invention.
A sectional view showing an embodiment, FIG. 6 is a sectional view of a conventional vibration isolator. 10... Vibration isolator, 11... Bottom plate, 18... Connection plate, 34... Liquid chamber.
Claims (1)
状体へ取り付けられて前記液室を密封する閉止部材とを
有する防振装置であって、前記筒状体には第１の内径部
の液室と反対側に第１の内径部よりも小径の第２の内径
部が設けられ、この第１の内径部を閉止部材の取付部と
すると共に、前記閉止部材の外径を前記第１の内径部よ
り大寸法としたことを特徴とする防振装置。(1) A vibration isolator comprising a cylindrical body provided with a vibration-absorbing liquid chamber therein, and a closing member attached to the cylindrical body to seal the liquid chamber, wherein the cylindrical body includes A second inner diameter part having a smaller diameter than the first inner diameter part is provided on the opposite side of the liquid chamber of the first inner diameter part, and this first inner diameter part is used as a mounting part of the closing member, and the second inner diameter part is used as the attachment part of the closing member. A vibration isolator characterized in that an outer diameter is larger than the first inner diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4620589A JPH02225838A (en) | 1989-02-27 | 1989-02-27 | Vibration isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4620589A JPH02225838A (en) | 1989-02-27 | 1989-02-27 | Vibration isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02225838A true JPH02225838A (en) | 1990-09-07 |
Family
ID=12740586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4620589A Pending JPH02225838A (en) | 1989-02-27 | 1989-02-27 | Vibration isolator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02225838A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0849748A (en) * | 1994-08-05 | 1996-02-20 | Yamashita Gomme Kk | Fluid-sealed vibration control device |
| JPH08247208A (en) * | 1995-03-09 | 1996-09-24 | Bridgestone Corp | Vibration isolator |
| JP2006057847A (en) * | 2004-08-16 | 2006-03-02 | Carl Freudenberg Kg | Hydraulic damping bearing |
| JP2018162824A (en) * | 2017-03-24 | 2018-10-18 | 株式会社ブリヂストン | Vibration isolator |
-
1989
- 1989-02-27 JP JP4620589A patent/JPH02225838A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0849748A (en) * | 1994-08-05 | 1996-02-20 | Yamashita Gomme Kk | Fluid-sealed vibration control device |
| JPH08247208A (en) * | 1995-03-09 | 1996-09-24 | Bridgestone Corp | Vibration isolator |
| JP2006057847A (en) * | 2004-08-16 | 2006-03-02 | Carl Freudenberg Kg | Hydraulic damping bearing |
| JP2018162824A (en) * | 2017-03-24 | 2018-10-18 | 株式会社ブリヂストン | Vibration isolator |
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