JPS6321791Y2 - - Google Patents

Info

Publication number
JPS6321791Y2
JPS6321791Y2 JP19833781U JP19833781U JPS6321791Y2 JP S6321791 Y2 JPS6321791 Y2 JP S6321791Y2 JP 19833781 U JP19833781 U JP 19833781U JP 19833781 U JP19833781 U JP 19833781U JP S6321791 Y2 JPS6321791 Y2 JP S6321791Y2
Authority
JP
Japan
Prior art keywords
rubber elastic
cover plate
bottom plate
liquid
plate
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
Application number
JP19833781U
Other languages
Japanese (ja)
Other versions
JPS58102847U (en
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 filed Critical
Priority to JP19833781U priority Critical patent/JPS58102847U/en
Publication of JPS58102847U publication Critical patent/JPS58102847U/en
Application granted granted Critical
Publication of JPS6321791Y2 publication Critical patent/JPS6321791Y2/ja
Granted legal-status Critical Current

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  • Combined Devices Of Dampers And Springs (AREA)

Description

【考案の詳細な説明】 本考案は互に区画された弾性変形可能な第1お
よび第2の流体室と、これ等両流体室の封入液体
を流通せしめる絞り孔を備えた液封入防振装置に
関するものである。
[Detailed description of the invention] The present invention is a liquid-filled vibration isolator that includes first and second elastically deformable fluid chambers that are partitioned from each other, and a throttle hole that allows the liquid sealed in both fluid chambers to flow. It is related to.

この種の液封入防振装置は、車両のエンジン支
持部などに適用されるものであつて、一般に厚肉
のゴム弾性体を室壁とする第1の流体室と、ベロ
ーズなどの薄肉のゴム弾性体を室壁とする第2の
流体室と、両流体室間に封入液体を流通せしめる
絞り孔を基本的要素として具備している。そして
この装置に支持せしめた被支持体が振動すると、
第1の流体室の室壁が変形して該流体室が容積変
化し、両流体室間に圧力差が生じて封入流体は前
記絞り孔を流通し、その際の流通抵抗により振動
減衰作用がなされる。
This type of liquid-filled vibration isolator is applied to the engine support part of a vehicle, and generally has a first fluid chamber whose chamber wall is made of a thick rubber elastic body, and a thin rubber material such as a bellows. The basic elements include a second fluid chamber whose chamber wall is made of an elastic body, and a throttle hole that allows the sealed liquid to flow between both fluid chambers. When the supported object supported by this device vibrates,
The chamber wall of the first fluid chamber is deformed and the volume of the fluid chamber changes, a pressure difference is generated between both fluid chambers, and the sealed fluid flows through the throttle hole, and the flow resistance at that time causes a vibration damping effect. It will be done.

第2図は考案者らが開発した液封入防振装置を
車体に取付けた状態を示すもので、Aは第1の流
体室、Bは第2の流体室である。1は第1の流体
室Aの室壁を形成する円錐台形の厚肉のゴム弾性
体壁で底面に凹所を有し、その凹所はカバー板2
でカバーされて第1の流体室Aを構成している。
ゴム弾性体壁1の下部外周面には環状の金具3が
接合されており、この金具3の下端部に形成した
かしめ部31でカバー板2の外周が断面コ字形に
かしめ固定してある。
FIG. 2 shows the liquid-filled vibration damping device developed by the inventors attached to a vehicle body, where A is the first fluid chamber and B is the second fluid chamber. Reference numeral 1 denotes a truncated cone-shaped thick rubber elastic wall forming the chamber wall of the first fluid chamber A, and has a recess in the bottom surface, and the recess is connected to the cover plate 2.
The first fluid chamber A is covered by the first fluid chamber A.
An annular metal fitting 3 is joined to the lower outer peripheral surface of the rubber elastic body wall 1, and the outer periphery of the cover plate 2 is caulked and fixed in a U-shaped cross section by a caulking portion 31 formed at the lower end of the metal fitting 3.

厚肉ゴム弾性体壁1の上部には両側にボルト4
a,4bを立設した支持板5の中央部が埋込まれ
ている。そして前記ゴム弾性体壁1の上面にはド
ーム型のゴム弾性体シート7がその周縁部で、支
持板5に設けた金具8aおよび該周縁部に埋設し
た金具8bにより固定されている。前記ゴム弾性
体シート7により構成される第2の流体室Bは、
厚肉のゴム弾性体壁1を軸方向に貫通する絞り孔
11により第1の流体室Aと連通している。支持
板5の上には中央部がドーム形をなす保護カバー
板9が重ねられている。
Bolts 4 are installed on both sides of the thick rubber elastic wall 1.
The center portion of the support plate 5 with the upright portions a and 4b is embedded. A dome-shaped rubber elastic sheet 7 is fixed at its peripheral edge to the upper surface of the rubber elastic wall 1 by a metal fitting 8a provided on the support plate 5 and a metal fitting 8b embedded in the peripheral edge. The second fluid chamber B constituted by the rubber elastic sheet 7 is
It communicates with the first fluid chamber A through a throttle hole 11 that passes through the thick rubber elastic wall 1 in the axial direction. A protective cover plate 9 having a dome-shaped center portion is superimposed on the support plate 5.

10はストツパ部材を兼ねる底板であつて第1
の流体室構成部が収められている。カバー板2の
中央にはその下面にボルト4cの頭部41Cの頂
面が溶接されており、軸部は底板10を貫通して
下方へ突出している。底板10の底面には金具3
のかしめ部31の下面、カバー板2の下面および
ボルト頭部41Cの下面が当接するようになつて
いる。底板10の両端は垂直に立上り、ゴム弾性
体壁1が被支持体の振動により変形したときに垂
直部の上端が支持板5の下面に当接し、過度の変
形を防ぐストツパの役割をなす。
10 is a bottom plate which also serves as a stopper member;
A fluid chamber component is housed in the chamber. The top surface of the head 41C of the bolt 4c is welded to the lower surface of the center of the cover plate 2, and the shaft portion penetrates the bottom plate 10 and projects downward. A metal fitting 3 is attached to the bottom of the bottom plate 10.
The lower surface of the caulking portion 31, the lower surface of the cover plate 2, and the lower surface of the bolt head 41C are brought into contact with each other. Both ends of the bottom plate 10 rise vertically, and when the rubber elastic wall 1 is deformed by the vibration of the supported body, the upper end of the vertical part comes into contact with the lower surface of the support plate 5, serving as a stopper to prevent excessive deformation.

前記のように構成した液封入防振装置は、車両
ボデー(図示せず)に設けたブラケツト20上に
載置される。ボルト4cはこのブラケツト20を
貫通して下方へ伸び出しており、ブラケツト20
の裏面側からナツト30で締付けることにより装
置は固定される。一方、支持板5に重ねられたカ
バー板9上にはブラケツト40が載置されてこの
ブラケツト40を介してエンジンが支持され、ブ
ラケツト40はボルト4a,4bおよびナツト5
0a,50bで締付けられる。
The liquid-filled vibration isolator configured as described above is placed on a bracket 20 provided on a vehicle body (not shown). The bolt 4c passes through this bracket 20 and extends downward.
The device is fixed by tightening the nut 30 from the back side. On the other hand, a bracket 40 is placed on the cover plate 9 superimposed on the support plate 5, and the engine is supported via this bracket 40.
Tightened with 0a and 50b.

ところで、厚肉ゴム弾性体壁1の下部外周、金
具3およびカバー板2の外周部で構成される第1
の流体室Aのシール部には、第1の流体室Aの封
入液体の内圧、振動に伴なうゴム弾性体壁1の動
きにより発生する圧縮応力、引張り応力が作用す
る。これによつてカバー板2の外周およびこれを
抱持する金具3のかしめ部31が底板10より浮
き上つたり、またこのような動きによつてかしめ
が緩んだりして封入液体が洩れるおそれがある。
By the way, the first part is made up of the lower outer periphery of the thick rubber elastic wall 1, the metal fitting 3, and the outer periphery of the cover plate 2.
Compressive stress and tensile stress generated by the internal pressure of the liquid sealed in the first fluid chamber A and the movement of the rubber elastic wall 1 due to vibration act on the seal portion of the fluid chamber A. This may cause the outer periphery of the cover plate 2 and the caulked portion 31 of the metal fitting 3 that holds it to rise above the bottom plate 10, and such movement may loosen the caulking and cause the sealed liquid to leak. be.

本考案はこの問題を解決して組付け容易で、か
つ上記かしめ部31のシール性を良好に保持する
液封入防振装置を提供するものである。しかして
本考案は第1図に示すように、カバー板2を、こ
れと底板10との間に間隙20が形成されるよう
に設定したことを特徴とする。
The present invention solves this problem and provides a liquid-filled vibration damping device that is easy to assemble and maintains the sealing properties of the caulked portion 31 well. As shown in FIG. 1, the present invention is characterized in that a gap 20 is formed between the cover plate 2 and the bottom plate 10.

第1図は本考案による液封入防振装置の車体へ
の取付け前の状態を示すものである。
FIG. 1 shows the state of the liquid-filled vibration isolator according to the present invention before it is installed on a vehicle body.

カバー板2は円形で、その中央部がやや高くな
つており、その下面には軸部よりも大径としたボ
ルト4cの上面が溶接されている。カバー板2の
外周は金具3のかしめ部31により断面コ字形に
かしめられている。カバー板2およびボルト頭部
41Cの下面はかしめ部31の下面よりも高い位
置となるように設定してある。従つて、第1の流
体室Aを構成する部材を底板10に収めて金具3
の下面で支持せしめた状態においてカバー板2と
底板10との間には間隙20が保持されるように
設定されている。
The cover plate 2 is circular and has a slightly higher central portion, and the upper surface of a bolt 4c having a larger diameter than the shaft portion is welded to the lower surface of the cover plate 2. The outer periphery of the cover plate 2 is caulked to have a U-shaped cross section by a caulking portion 31 of the metal fitting 3. The lower surfaces of the cover plate 2 and the bolt head 41C are set to be higher than the lower surface of the caulked portion 31. Therefore, the members constituting the first fluid chamber A are housed in the bottom plate 10 and the metal fittings 3
A gap 20 is maintained between the cover plate 2 and the bottom plate 10 when the cover plate 2 and the bottom plate 10 are supported on the lower surface thereof.

しかして、第2図に示す従来装置と同様に底板
10をブラケツト20上に載せブラケツト20の
裏面側からナツト30を締付ける。これによりカ
バー板2は下方に引かれ、底板10に対する押付
力はかしめ部31において作用し、ナツト30の
締付けに伴いかしめ部31は底板10に強固に固
定される。
Then, similarly to the conventional device shown in FIG. 2, the bottom plate 10 is placed on the bracket 20, and the nuts 30 are tightened from the back side of the bracket 20. As a result, the cover plate 2 is pulled downward, and a pressing force against the bottom plate 10 acts on the caulking portion 31, and as the nut 30 is tightened, the caulking portion 31 is firmly fixed to the bottom plate 10.

このように本考案では金具3のかしめ部31に
は底板10に対する押付力が集中して作用するか
らかしめ部31は強力に底板10に固定され、車
両の振動、ゴム弾性体壁1への応力の作用によつ
てかしめが緩むようなことはなく、良好なシール
性が維持されるのである。
In this way, in the present invention, since the pressing force against the bottom plate 10 is concentrated on the caulking part 31 of the metal fitting 3, the caulking part 31 is strongly fixed to the bottom plate 10, and the vibration of the vehicle and the stress on the rubber elastic wall 1 are reduced. The caulking does not loosen due to this action, and good sealing performance is maintained.

なお、上記実施例ではボルト4cの頭部をカバ
ー板2の下面に固着したが、ボルト軸部を上方よ
りカバー板2および底板10に貫通せしめ、カバ
ー板2を上から押し下げる構造としてもよい。
In the above embodiment, the head of the bolt 4c is fixed to the lower surface of the cover plate 2, but a structure may be adopted in which the bolt shaft portion passes through the cover plate 2 and the bottom plate 10 from above, and the cover plate 2 is pushed down from above.

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

図は本考案の一実施例を示すもので、第1図は
液封入防振装置の車体への固定前の状態を示す断
面図、第2図は固定後の状態を示す断面図であ
る。 A……第1の流体室、B……第2の流体室、1
……厚肉ゴム弾性体壁、11……絞り孔、2……
カバー板、3……かしめ金具、4a,4b,4c
……ボルト、10……底板、20……車体のブラ
ケツト、30,50a,50b……ナツト、20
……間隙。
The figures show one embodiment of the present invention, in which Fig. 1 is a cross-sectional view showing the state before the liquid-filled vibration isolating device is fixed to the vehicle body, and Fig. 2 is a cross-sectional view showing the state after the device is fixed. A: First fluid chamber, B: Second fluid chamber, 1
......Thick rubber elastic wall, 11...Throttling hole, 2...
Cover plate, 3.... Crimping metal fittings, 4a, 4b, 4c
...Bolt, 10...Bottom plate, 20...Bracket of vehicle body, 30, 50a, 50b...Nut, 20
……gap.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 底面に凹所を形成した錐台形の厚肉ゴム弾性体
壁に前記凹所をおおうようにカバー板を固定して
第1の流体室を形成し、前記ゴム弾性体の上面に
は薄肉ゴム弾性体シートよりなる第2の流体室を
形成するとともに前記厚肉ゴム弾性体壁を貫通す
る絞り穴により前記第1および第2の流体室を連
通せしめた液封入防振装置であつて、前記カバー
板の周縁はこれを前記厚肉ゴム弾性体壁の下部外
周に設けた金具のかしめ部により断面コ字形にか
しめ固定し、前記カバー板の下面中央部にはボル
トの頭部を固着し、ボルトの軸部を装置を載置固
定すべき底板を貫通して下方へ突出せしめ、底板
の裏面側からナツトを締付けてカバー板と底板と
を結合する液封入防振装置において、前記カバー
板の下面を前記金具のかしめ部下面よりも高位置
に設定し、カバー板と底板との間に隙間をもたせ
たことを特徴とする液封入防振装置。
A first fluid chamber is formed by fixing a cover plate to a frustum-shaped thick rubber elastic body wall with a recess formed in the bottom surface so as to cover the recess, and a thin rubber elastic body is formed on the upper surface of the rubber elastic body. The liquid-filled vibration isolator is configured to form a second fluid chamber made of a body sheet and communicate the first and second fluid chambers through a throttle hole penetrating the thick rubber elastic wall, the liquid-filled vibration isolator having the cover. The peripheral edge of the plate is caulked and fixed in a U-shaped cross section by a caulking part of a metal fitting provided on the lower outer periphery of the thick rubber elastic wall, and the head of a bolt is fixed to the center of the lower surface of the cover plate. In a liquid-filled vibration isolating device, the shaft portion of the liquid-filled vibration isolator is made to protrude downward through a bottom plate on which the device is to be placed and fixed, and a nut is tightened from the back side of the bottom plate to connect the cover plate and the bottom plate. is set at a higher position than the lower surface of the caulked metal fitting, and a gap is provided between the cover plate and the bottom plate.
JP19833781U 1981-12-29 1981-12-29 Liquid-filled vibration isolator Granted JPS58102847U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19833781U JPS58102847U (en) 1981-12-29 1981-12-29 Liquid-filled vibration isolator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19833781U JPS58102847U (en) 1981-12-29 1981-12-29 Liquid-filled vibration isolator

Publications (2)

Publication Number Publication Date
JPS58102847U JPS58102847U (en) 1983-07-13
JPS6321791Y2 true JPS6321791Y2 (en) 1988-06-15

Family

ID=30111529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19833781U Granted JPS58102847U (en) 1981-12-29 1981-12-29 Liquid-filled vibration isolator

Country Status (1)

Country Link
JP (1) JPS58102847U (en)

Also Published As

Publication number Publication date
JPS58102847U (en) 1983-07-13

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