JPH09170642A - Resin bracket structure of liquid filled bush - Google Patents
Resin bracket structure of liquid filled bushInfo
- Publication number
- JPH09170642A JPH09170642A JP33002395A JP33002395A JPH09170642A JP H09170642 A JPH09170642 A JP H09170642A JP 33002395 A JP33002395 A JP 33002395A JP 33002395 A JP33002395 A JP 33002395A JP H09170642 A JPH09170642 A JP H09170642A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- outer cylinder
- liquid
- elastic body
- inner cylinder
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 72
- 239000011347 resin Substances 0.000 title claims abstract description 51
- 229920005989 resin Polymers 0.000 title claims abstract description 51
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 238000009751 slip forming Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 description 17
- 230000004323 axial length Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- 241001247986 Calotropis procera Species 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
Landscapes
- Combined Devices Of Dampers And Springs (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車のエンジン
マウントやサスペンションマウントなどのマウント部材
として用いられる液体封入ブッシュにおける樹脂ブラケ
ット構造に関するのである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin bracket structure in a liquid-filled bush used as a mount member such as an engine mount or a suspension mount of an automobile.
【０００２】[0002]
【従来の技術】従来より、マウント部材として用いられ
るゴムブッシュには、特開平４−５４３３４号公報に開
示されているように、内筒と外筒との間にゴム弾性体を
設けて該内筒と外筒とを連結すると共に、該ゴム弾性体
に中空部を形成しているものがある。2. Description of the Related Art Conventionally, a rubber bush used as a mount member is provided with a rubber elastic body between an inner cylinder and an outer cylinder, as disclosed in JP-A-4-54334. In some cases, a hollow portion is formed in the rubber elastic body while connecting the cylinder and the outer cylinder.
【０００３】更に、上記外筒の外側には樹脂ブラケット
を形成しており、この樹脂ブラケットは、外筒の外周面
を被覆する筒状本体と、外筒の両端部を被覆する内向き
のフランジ片とを一体形成して構成されている。つま
り、上記筒状本体の端部とフランジ片とは断面Ｌ字状に
形成されている。そして、上記外筒の軸方向移動がフラ
ンジ片によって規制されるようにし、樹脂ブラケットか
らゴムブッシュが抜け出さないようにしている。Further, a resin bracket is formed on the outer side of the outer cylinder, and the resin bracket includes a cylindrical body for covering the outer peripheral surface of the outer cylinder and an inward flange for covering both ends of the outer cylinder. It is configured by integrally forming one piece. That is, the end of the tubular body and the flange piece are formed in an L-shaped cross section. The axial movement of the outer cylinder is restricted by the flange piece so that the rubber bush does not come out of the resin bracket.
【０００４】[0004]
【発明が解決しようとする課題】一方、エンジンマウン
ト等のマウント部材として用いられるブッシュとして
は、上述したゴムブッシュの他に、ゴム弾性体の内部に
中間筒を設けると共に、該ゴム弾性体の内部に液室を形
成して該液室に液体を封入した液体封入ブッシュがあ
る。この液体封入ブッシュにおいては、上述したフラン
ジ片を有する樹脂ブラケットを単に適用したのみでは充
分なシール性能を得ることができないという問題があ
る。On the other hand, as a bush used as a mount member for an engine mount or the like, in addition to the rubber bush described above, an intermediate cylinder is provided inside the rubber elastic body, and the inside of the rubber elastic body is provided. There is a liquid sealing bush in which a liquid chamber is formed and a liquid is sealed in the liquid chamber. In this liquid-filled bush, there is a problem that sufficient sealing performance cannot be obtained simply by applying the resin bracket having the flange piece described above.
【０００５】つまり、上記液体封入ブッシュは、外筒と
中間筒との間の弾性体が液体のシール層になっており、
入力がシール層にそのまま作用するので、このシール層
の弾性体の変形によってシール性能が低下するという問
題がある。That is, in the liquid-filled bush, the elastic body between the outer cylinder and the intermediate cylinder is a liquid sealing layer,
Since the input acts on the seal layer as it is, there is a problem that the sealing performance is deteriorated by the deformation of the elastic body of the seal layer.
【０００６】したがって、上記液体封入ブッシュにおい
て、単に外筒の端面を覆うフランジ片を樹脂ブラケット
に形成したのみでは、入力がシール層にそのまま作用
し、シール層の弾性体の変形によるシール性能の低下を
有効に防止することができないという問題がある。Therefore, in the above liquid-filled bush, if the flange piece that covers the end surface of the outer cylinder is simply formed on the resin bracket, the input acts on the seal layer as it is, and the sealing performance is deteriorated due to the deformation of the elastic body of the seal layer. There is a problem in that it cannot be effectively prevented.
【０００７】本発明は、斯かる点に鑑みてなされたもの
で、樹脂ブラケットに対する液体封入ブッシュの抜けを
確実に防止すると同時に、シール性能の向上を図ること
を目的とするものである。The present invention has been made in view of the above problems, and an object of the present invention is to reliably prevent the liquid sealing bush from coming off from the resin bracket and to improve the sealing performance.
【０００８】[0008]
−発明の概要− 本発明は、内筒及び外筒の他、中間筒を備え、該内筒と
外筒との間の弾性体に液体を封入した液体封入ブッシュ
において、樹脂ブラケットには、外筒の外周面から外筒
の端面を覆って少なくとも中間筒の外周面まで延びるフ
ランジ片を形成すると共に、外筒と中間筒との間の端部
に樹脂を回り込ませて侵入凸部をフランジ片に一体形成
し、侵入凸部が入力を受けるようにする。—Summary of the Invention— The present invention provides a liquid sealing bush that includes an inner cylinder, an outer cylinder, and an intermediate cylinder, and a liquid is sealed in an elastic body between the inner cylinder and the outer cylinder. A flange piece is formed that extends from the outer peripheral surface of the cylinder to the outer peripheral surface of the intermediate cylinder while covering the end surface of the outer cylinder. It is formed integrally with the so that the intruding convex portion receives the input.
【０００９】−発明の特定事項− 具体的に、請求項１に係る発明が講じた手段は、先ず、
内筒と、該内筒を覆うように該内筒と同心上に配置され
た外筒とが設けられている。そして、上記内筒と外筒と
の間には該内筒と外筒とを連結する弾性体が設けられる
と共に、上記内筒と外筒との間には、弾性体内に埋め込
まれ、且つ周方向に複数個の窓部が形成された中間筒が
配置されている。更に、該中間筒の窓部に対応して弾性
体には、非圧縮性の液体が封入された複数の液室が形成
されると共に、上記弾性体には、各液室に連通して液体
の移動可能なオリフィス通路が形成されている液体封入
ブッシュを前提としている。-Specific items of invention- Specifically, the means taken by the invention according to claim 1 is as follows.
An inner cylinder and an outer cylinder arranged concentrically with the inner cylinder so as to cover the inner cylinder are provided. An elastic body that connects the inner cylinder and the outer cylinder is provided between the inner cylinder and the outer cylinder, and is embedded in the elastic body between the inner cylinder and the outer cylinder. An intermediate cylinder having a plurality of windows formed in the direction is arranged. Further, a plurality of liquid chambers in which an incompressible liquid is enclosed are formed in the elastic body corresponding to the window portion of the intermediate cylinder, and the elastic body communicates with the liquid chambers to form a liquid. It is premised on a liquid-filled bush in which a movable orifice passage is formed.
【００１０】加えて、上記外筒の外周面を被覆する筒状
本体と、該筒状本体の両端に連続形成されて筒状本体か
ら求心方向に延びる内向きのフランジ片とを少なくとも
備えた樹脂ブラケットが設けられている。該樹脂ブラケ
ットのフランジ片は、外筒の両端面から中間筒の両端面
に亘って該外筒及び中間筒の端面を被覆するように形成
される共に、外筒と中間筒の間の端部より内方に入り込
んで弾性体に接する侵入凸部が一体形成されている。In addition, a resin having at least a tubular main body covering the outer peripheral surface of the outer cylinder, and inward flange pieces continuously formed at both ends of the tubular main body and extending in the centripetal direction from the tubular main body. A bracket is provided. The flange piece of the resin bracket is formed so as to cover the end faces of the outer cylinder and the intermediate cylinder from both end surfaces of the outer cylinder to both end surfaces of the intermediate cylinder, and the end portion between the outer cylinder and the intermediate cylinder. An intruding convex portion that is further inward and contacts the elastic body is integrally formed.
【００１１】また、請求項２に係る発明が講じた手段
は、上記請求項１記載の発明と同様の液体封入ブッシュ
を前提としている。そして、中間筒は、両端が外筒の両
端部より突出するように該外筒より長く形成されてい
る。加えて、外筒の外周面を被覆する筒状本体と、該筒
状本体の両端に連続形成されて筒状本体から求心方向に
延びる内向きのフランジ片とを少なくとも備えた樹脂ブ
ラケットが設けられている。該樹脂ブラケットのフラン
ジ片は、外筒の両端面から中間筒の外周面に亘って該外
筒の端面を被覆するように形成される共に、外筒と中間
筒の間の端部より内方に入り込んで弾性体に接する侵入
凸部が一体形成されている。The means taken by the invention according to claim 2 is based on the same liquid-filled bush as the invention according to claim 1. The intermediate cylinder is formed longer than the outer cylinder so that both ends of the intermediate cylinder protrude from both ends of the outer cylinder. In addition, a resin bracket including at least a tubular body that covers the outer peripheral surface of the outer tube and inward flange pieces that are continuously formed at both ends of the tubular body and extend in the centripetal direction from the tubular body is provided. ing. The flange piece of the resin bracket is formed so as to cover the end surface of the outer cylinder from both end surfaces of the outer cylinder to the outer peripheral surface of the intermediate cylinder, and is inward from the end portion between the outer cylinder and the intermediate cylinder. An intruding protrusion that comes in and contacts the elastic body is integrally formed.
【００１２】また、請求項３に係る発明が講じた手段
は、上記請求項２記載の発明において、中間筒は、両端
部が小径に絞られた段付きの筒体に形成された構成とし
ている。Further, the means taken by the invention according to claim 3 is, in the invention according to claim 2, characterized in that the intermediate cylinder is formed as a stepped cylinder whose both ends are narrowed to a small diameter. .
【００１３】−作用− 上記の発明特定事項により、請求項１に係る発明では、
例えば、樹脂ブラケットが自動車の車体側に取り付けら
れる一方、内筒がエンジンに連結される。そして、内筒
が入力を受けると、該入力を弾性体で受け止めると共
に、上下方向の振動入力に対しては複数の液室の収縮及
び拡張に伴う液体の移動によって振動減衰を図ってい
る。-Operation- Due to the above-mentioned matters specifying the invention, in the invention according to claim 1,
For example, the resin bracket is attached to the vehicle body side of the automobile, while the inner cylinder is connected to the engine. Then, when the inner cylinder receives an input, the elastic body receives the input, and the vibration is attenuated by the movement of the liquid due to the contraction and expansion of the plurality of liquid chambers in response to the vertical vibration input.
【００１４】上述した入力に対して弾性体は変形するこ
とになるが、樹脂ブラケットの侵入凸部が外筒と中間筒
との間に介在しているので、この侵入凸部が入力を受け
止めることになる。この結果、外筒と中間筒との間の弾
性体の入力が軽減され、シール性の安定化が図られるこ
とになる。Although the elastic body is deformed in response to the above-mentioned input, since the intruding convex portion of the resin bracket is interposed between the outer cylinder and the intermediate cylinder, this intruding convex portion can receive the input. become. As a result, the input of the elastic body between the outer cylinder and the intermediate cylinder is reduced, and the sealing performance is stabilized.
【００１５】また、請求項２に係る発明では、樹脂ブラ
ケットを形成するために液体封入ブッシュを金型にセッ
トした際、中間筒の端面が金型に当接し、金型に対する
位置決めが行われることになる。According to the second aspect of the invention, when the liquid-filled bush is set in the mold to form the resin bracket, the end face of the intermediate cylinder abuts against the mold and the positioning with respect to the mold is performed. become.
【００１６】特に、請求項３に係る発明では、中間筒の
小径端部によって外筒と中間筒との間隔が大きくなり、
樹脂が入り易くなり、侵入凸部が確実に形成されること
になる。Particularly, in the invention according to claim 3, the small diameter end portion of the intermediate cylinder increases the distance between the outer cylinder and the intermediate cylinder,
The resin easily enters and the intruding protrusions are reliably formed.
【００１７】[0017]
【発明の効果】したがって、請求項１に係る発明によれ
ば、樹脂ブラケットに外筒と中間筒の端面を被覆するフ
ランジ片を形成すると共に、外筒と中間筒との間に介在
する侵入凸部をフランジ片に一体形成するようにしたた
めに、外筒と中間筒との間の弾性体に作用する入力を侵
入凸部によって受け止めることができる。このため、上
記外筒と中間筒との間の弾性体に対する入力を軽減する
ことができるので、安定したシール性を確保することが
でき、長期間に亘って所定のシール性を保証することが
できる。As described above, according to the first aspect of the present invention, the flange piece for covering the end faces of the outer cylinder and the intermediate cylinder is formed on the resin bracket, and the intrusion projection interposed between the outer cylinder and the intermediate cylinder is formed. Since the portion is integrally formed with the flange piece, the input acting on the elastic body between the outer cylinder and the intermediate cylinder can be received by the intrusion convex portion. Therefore, it is possible to reduce the input to the elastic body between the outer cylinder and the intermediate cylinder, so that it is possible to secure a stable sealing property and guarantee a predetermined sealing property for a long period of time. it can.
【００１８】また、上記外筒と中間筒との間に介在する
侵入凸部によって、外筒と中間筒との間の弾性体の圧縮
率を一定に確保することができる。Further, the compression ratio of the elastic body between the outer cylinder and the intermediate cylinder can be kept constant by the intruding convex portion interposed between the outer cylinder and the intermediate cylinder.
【００１９】また、上記侵入凸部によって外筒と中間筒
との間の弾性体を従来に比して薄肉にすることができ、
小形化及び原材料の低減を図ることができる。Further, the elastic body between the outer cylinder and the intermediate cylinder can be made thinner than the conventional one by the intrusion convex portion,
Miniaturization and reduction of raw materials can be achieved.
【００２０】また、上記外筒の端面等を覆うフランジを
形成するようにしたために、樹脂ブラケットに対する液
体封入ブッシュの抜けを確実に防止することができるの
で、製品の信頼性の向上を図ることができる。特に、樹
脂ブラケットの成形時における樹脂の収縮による絞め力
によって液体封入ブッシュの抜けをより確実に防止する
ことができる。Further, since the flange for covering the end surface of the outer cylinder is formed, it is possible to reliably prevent the liquid-filled bush from coming off the resin bracket, so that the reliability of the product can be improved. it can. In particular, it is possible to more reliably prevent the liquid-filled bush from coming off due to the tightening force due to the contraction of the resin when the resin bracket is molded.
【００２１】また、ブラケットを金属製で形成する場合
に比して、外筒に絞りを形成する必要がなく、ブラケッ
トの内径寸法を高精度に管理する必要がなく、しかも、
外筒の両端部のかしめを省略することができるので、オ
リフィス通路の寸法精度を安定させることができ、振動
低減を確実に図ることができ、製品の信頼性を向上させ
ることができる。Further, as compared with the case where the bracket is made of metal, it is not necessary to form a diaphragm in the outer cylinder, it is not necessary to control the inner diameter of the bracket with high precision, and
Since crimping of both ends of the outer cylinder can be omitted, dimensional accuracy of the orifice passage can be stabilized, vibration can be reliably reduced, and product reliability can be improved.
【００２２】また、請求項２に係る発明によれば、中間
筒を外筒より長く形成したために、樹脂ブラケットを形
成するに当り、液体封入ブッシュを金型にセットした
際、中間筒の端面が金型に当接させることができるの
で、金型に対する位置決めを容易に行うことができる。Further, according to the second aspect of the invention, since the intermediate cylinder is formed longer than the outer cylinder, the end face of the intermediate cylinder is set when the liquid sealing bush is set in the mold when forming the resin bracket. Since it can be brought into contact with the mold, positioning with respect to the mold can be easily performed.
【００２３】また、請求項３に係る発明によれば、中間
筒の端部を小径に形成するようにしたために、該中間筒
の端部における外筒と中間筒との間隔が大きくなり、樹
脂が入り易くなり、侵入凸部を確実に形成することがで
きる。Further, according to the third aspect of the invention, since the end portion of the intermediate cylinder is formed to have a small diameter, the distance between the outer cylinder and the intermediate cylinder at the end portion of the intermediate cylinder becomes large, and the resin Can easily enter, and the intruding protrusion can be reliably formed.
【００２４】[0024]
【発明の実施の形態１】以下、本発明の実施形態１を図
面に基づいて詳細に説明する。Embodiment 1 of the present invention will be described below in detail with reference to the drawings.
【００２５】図１及び図２に示すように、１は、自動車
のエンジンマウントやサスペンションマウントなどのマ
ウント部材として用いられる液体封入ブッシュであっ
て、該液体封入ブッシュ１には樹脂ブラケット２が一体
に取り付けられている。As shown in FIGS. 1 and 2, reference numeral 1 denotes a liquid-filled bush used as a mount member such as an engine mount or suspension mount of an automobile. The liquid-filled bush 1 is integrally provided with a resin bracket 2. It is installed.
【００２６】上記液体封入ブッシュ１は、内筒３と中間
筒４と外筒５とを備えると共に、内筒３と外筒５との間
に介在する弾性体６を備えている。そして、該内筒３
は、軸部材が貫挿されるものであって、剛性の高い金属
等で形成されている。The liquid-filled bush 1 includes an inner cylinder 3, an intermediate cylinder 4 and an outer cylinder 5, and an elastic body 6 interposed between the inner cylinder 3 and the outer cylinder 5. And the inner cylinder 3
Is a member through which the shaft member is inserted, and is made of metal or the like having high rigidity.
【００２７】上記外筒５は、内筒３との間に所定間隔を
存し且つ内筒３を覆うように該内筒３と同心上に配置さ
れている。The outer cylinder 5 is arranged concentrically with the inner cylinder 3 so as to have a predetermined space between the outer cylinder 5 and the inner cylinder 3.
【００２８】上記弾性体６は、内筒３と外筒５との間に
設けられて該内筒３と外筒５とを連結しており、ゴム等
で形成されている。The elastic body 6 is provided between the inner cylinder 3 and the outer cylinder 5 to connect the inner cylinder 3 and the outer cylinder 5, and is made of rubber or the like.
【００２９】上記中間筒４は、外筒５よりやや小径の筒
体であって、外筒５との間に小さな間隔が、内筒３との
間に大きな間隔が存するように内筒３と外筒５との間に
配置されて弾性体６内に埋め込まれている。該中間筒４
は、軸方向長さが外筒５と同一又はほぼ同一に形成され
ると共に、中間筒４の軸方向の中央部には、内外面に貫
通する２つの窓部４１，４１が１８０度の対向位置に形
成されている。The intermediate cylinder 4 is a cylinder having a diameter slightly smaller than that of the outer cylinder 5, and the inner cylinder 3 and the inner cylinder 3 have a small space between them and a large space between them. It is arranged between the outer cylinder 5 and embedded in the elastic body 6. The intermediate cylinder 4
Has an axial length that is the same as or substantially the same as the outer cylinder 5, and two window portions 41, 41 penetrating the inner and outer surfaces are opposed to each other by 180 degrees at the central portion in the axial direction of the intermediate cylinder 4. Is formed in position.
【００３０】上記弾性体６には、中間筒４の窓部４１，
４１に対応する位置に２つの液室６１，６１が形成され
ている。該液室６１，６１は、外周面が外筒５によって
閉塞されるように形成され、シリコーンオイルやグリコ
ール等の非圧縮性の液体１１が封入されている。The elastic body 6 has a window portion 41 of the intermediate cylinder 4,
Two liquid chambers 61, 61 are formed at positions corresponding to 41. The liquid chambers 61, 61 are formed so that their outer peripheral surfaces are closed by the outer cylinder 5, and an incompressible liquid 11 such as silicone oil or glycol is sealed therein.
【００３１】更に、上記弾性体６の内部には、２つの液
室６１，６１に連通するオリフィス通路６２，６２が形
成されている。該オリフィス通路６２，６２は、中間筒
４と内筒３との間に形成され、２つの液室６１，６１の
間を液体１１が移動し得るように構成されている。Further, inside the elastic body 6, orifice passages 62, 62 communicating with the two liquid chambers 61, 61 are formed. The orifice passages 62, 62 are formed between the intermediate cylinder 4 and the inner cylinder 3 so that the liquid 11 can move between the two liquid chambers 61, 61.
【００３２】また、上記中間筒４と外筒５との間の弾性
体６は、液室６１，６１等に封入された液体１１をシー
ルするためのシール層６３を構成する一方、上記中間筒
４の内側の弾性体６は、中間筒４の両端部まで形成され
ている。The elastic body 6 between the intermediate cylinder 4 and the outer cylinder 5 constitutes a seal layer 63 for sealing the liquid 11 enclosed in the liquid chambers 61, 61 and the like, while the intermediate cylinder 4 is formed. The elastic body 6 inside 4 is formed up to both ends of the intermediate cylinder 4.
【００３３】−樹脂ブラケット構造− 上記樹脂ブラケット２は、筒状本体２１と内向きのフラ
ンジ片２２，２２とを備えると共に、一対の取付け脚２
３，２３を備えている。該筒状本体２１は、外筒５の外
周面を被覆する円筒体であって、該外筒５に密着固定す
るように形成されている。-Resin Bracket Structure- The resin bracket 2 includes a tubular body 21 and inward flange pieces 22 and 22, and a pair of mounting legs 2 are provided.
It has 3,23. The cylindrical main body 21 is a cylindrical body that covers the outer peripheral surface of the outer cylinder 5, and is formed so as to be closely fixed to the outer cylinder 5.
【００３４】上記フランジ片２２，２２は、本発明の特
徴とするところであって、筒状本体２１の両端に連続形
成されて筒状本体２１から断面Ｌ字状に屈曲して求心方
向に延長されている。該フランジ片２２，２２は、外筒
５の両端面から中間筒４の両端面に亘って該外筒５及び
中間筒４の端面を被覆する長さに形成されている。つま
り、上記フランジ片２２，２２は、内径が中間筒４の内
径に一致するように形成されて外筒５及び中間筒４の端
面を被覆している。The flange pieces 22 and 22 are a feature of the present invention. The flange pieces 22 and 22 are continuously formed at both ends of the tubular body 21 and are bent from the tubular body 21 in an L-shaped cross section to extend in the centripetal direction. ing. The flange pieces 22, 22 are formed in a length covering both end surfaces of the outer cylinder 5 and both end surfaces of the intermediate cylinder 4 so as to cover the end surfaces of the outer cylinder 5 and the intermediate cylinder 4. That is, the flange pieces 22 and 22 are formed so that the inner diameter thereof matches the inner diameter of the intermediate cylinder 4, and cover the end faces of the outer cylinder 5 and the intermediate cylinder 4.
【００３５】更に、上記フランジ片２２，２２には、外
筒５と中間筒４の間の端部より内方に入り込んだ侵入凸
部２４，２４が一体形成されている。該侵入凸部２４，
２４は、外筒５と中間筒４の間に挟まれたリング状突起
に形成され、外周面が外筒５の内面に圧接され、内周面
が中間筒４の外周面に圧接されており、軸方向の内端面
に弾性体６のシール層６３が接するように形成されてい
る。Further, the flange pieces 22 and 22 are integrally formed with intruding protrusions 24 and 24 which are inward from the end portion between the outer cylinder 5 and the intermediate cylinder 4. The intruding protrusion 24,
Reference numeral 24 denotes a ring-shaped protrusion sandwiched between the outer cylinder 5 and the intermediate cylinder 4, the outer peripheral surface of which is pressed against the inner surface of the outer cylinder 5 and the inner peripheral surface of which is pressed against the outer peripheral surface of the intermediate cylinder 4. The seal layer 63 of the elastic body 6 is formed so as to contact the inner end surface in the axial direction.
【００３６】上記一対の取付け脚２３，２３は、円柱状
に形成されて軸方向と直交する方向に並列に設けられ、
固定用ボルト２５，２５が埋め込まれている。そして、
該取付け脚２３，２３の上端は筒状本体２１に連続する
一方、両取付け脚２３，２３の間にはリブ２６が連続形
成されると共に、図示しないが、取付け脚２３，２３の
側面と外筒５の端面との間にはリブが連続形成されてい
る。The pair of mounting legs 23, 23 are formed in a cylindrical shape and arranged in parallel in a direction orthogonal to the axial direction,
The fixing bolts 25, 25 are embedded. And
The upper ends of the mounting legs 23, 23 are continuous with the cylindrical body 21, while the ribs 26 are continuously formed between the mounting legs 23, 23. A rib is continuously formed between the end surface of the cylinder 5.
【００３７】−製造方法− 上記液体封入ブッシュ１等の製造は、次の通り行われ
る。先ず、内筒３及び中間筒４を配置した状態におい
て、弾性体６を加硫して該弾性体６を内筒３に接着固定
すると共に、中間筒４を弾性体６に埋め込む。続いて、
その後、液室６１，６１に液体１１を注入した状態にお
いて、弾性体６を接着した内筒３等を外筒５に圧入して
液体封入ブッシュ１の形成を完了する。-Manufacturing Method- The liquid-filled bush 1 and the like are manufactured as follows. First, in a state where the inner cylinder 3 and the intermediate cylinder 4 are arranged, the elastic body 6 is vulcanized to bond and fix the elastic body 6 to the inner cylinder 3, and the intermediate cylinder 4 is embedded in the elastic body 6. continue,
After that, in a state where the liquid 11 is injected into the liquid chambers 61, 61, the inner cylinder 3 or the like to which the elastic body 6 is adhered is press-fitted into the outer cylinder 5 to complete the formation of the liquid sealing bush 1.
【００３８】その後、上記液体封入ブッシュ１を金型に
セットした後、樹脂を金型に注入して樹脂ブラケット２
を形成し、液体封入ブッシュ１に樹脂ブラケット２を一
体に固定して製造工程が完了する。After that, the liquid-filled bush 1 is set in a mold, and then resin is injected into the mold to form a resin bracket 2
The resin bracket 2 is integrally fixed to the liquid-filled bush 1 to complete the manufacturing process.
【００３９】−実施形態１の作用及び効果− 上述した樹脂ブラケット２を一体にした液体封入ブッシ
ュ１は、例えば、樹脂ブラケット２が自動車の車体側に
取付け脚２３，２３を介して取り付けられる一方、内筒
３がエンジンに連結される。そして、内筒３が下方等の
入力を受けると、該入力を弾性体６で受け止めると共
に、上下方向の振動入力に対しては２つの液室６１，６
１の収縮及び拡張に伴う液体１１の移動によって振動減
衰を図ることになる。-Operation and Effect of Embodiment 1- In the liquid-filled bush 1 in which the above-mentioned resin bracket 2 is integrated, for example, while the resin bracket 2 is mounted on the vehicle body side of the automobile through the mounting legs 23, 23, The inner cylinder 3 is connected to the engine. When the inner cylinder 3 receives an input such as downward, the elastic body 6 receives the input and the two liquid chambers 61 and 6 are provided for the vertical vibration input.
The vibration of the liquid 11 is intended to be attenuated by the movement of the liquid 11 associated with the contraction and expansion of 1.
【００４０】上述した入力に対して弾性体６は変形する
ことになるが、シール層６３においては、樹脂ブラケッ
ト２の侵入凸部２４，２４が外筒５と中間筒４との間に
介在しているので、この侵入凸部２４，２４が入力を受
け止めることになる。Although the elastic body 6 is deformed in response to the above-mentioned input, in the seal layer 63, the protrusions 24, 24 of the resin bracket 2 are interposed between the outer cylinder 5 and the intermediate cylinder 4. Therefore, the intruding convex portions 24, 24 receive the input.
【００４１】したがって、上記弾性体６におけるシール
層６３の入力を軽減することができるので、安定したシ
ール性を確保することができ、長期間に亘って所定のシ
ール性を保証することができる。Therefore, since the input of the seal layer 63 in the elastic body 6 can be reduced, a stable sealing property can be secured and a predetermined sealing property can be guaranteed for a long period of time.
【００４２】また、上記外筒５と中間筒４との間に介在
する侵入凸部２４，２４を形成したために、シール層６
３の圧縮率を一定に確保することができる。Further, since the intruding protrusions 24, 24 interposed between the outer cylinder 5 and the intermediate cylinder 4 are formed, the seal layer 6 is formed.
The compression rate of 3 can be kept constant.
【００４３】また、上記侵入凸部２４，２４によって弾
性体６のシール層６３を従来に比して薄肉にすることが
でき、小形化及び原材料の低減を図ることができる。Further, the intrusion projections 24, 24 make it possible to make the seal layer 63 of the elastic body 6 thinner than in the conventional case, thereby achieving downsizing and reduction of raw materials.
【００４４】また、上記外筒５の端面等を覆うフランジ
片２２，２２を形成するようにしたために、樹脂ブラケ
ット２に対する液体封入ブッシュ１の抜けを確実に防止
することができるので、製品の信頼性の向上を図ること
ができる。特に、樹脂ブラケット２の成形時における樹
脂の収縮による絞め力によって液体封入ブッシュ１の抜
けをより確実に防止することができる。Further, since the flange pieces 22 and 22 for covering the end surface of the outer cylinder 5 and the like are formed, it is possible to reliably prevent the liquid-filled bush 1 from coming off the resin bracket 2, so that the reliability of the product is improved. It is possible to improve the sex. In particular, the liquid sealing bush 1 can be more surely prevented from coming off by the tightening force due to the contraction of the resin when the resin bracket 2 is molded.
【００４５】また、ブラケットを金属製で形成する場合
に比して、外筒５に絞りを形成する必要がなく、樹脂ブ
ラケット２の内径寸法を高精度に管理する必要がなく、
しかも、外筒５の両端部のかしめを省略することができ
るので、オリフィス通路６２，６２の寸法精度を安定さ
せることができ、振動低減を確実に図ることができ、製
品の信頼性を向上させることができる。Further, as compared with the case where the bracket is made of metal, it is not necessary to form a diaphragm in the outer cylinder 5, and it is not necessary to control the inner diameter of the resin bracket 2 with high accuracy.
Moreover, since caulking of both ends of the outer cylinder 5 can be omitted, dimensional accuracy of the orifice passages 62, 62 can be stabilized, vibration can be reliably reduced, and product reliability is improved. be able to.
【００４６】[0046]
【発明の実施の形態２】図３は、本発明の実施形態２を
示しており、上記実施形態１の中間筒４に代り、本実施
形態２の中間筒４は、軸方向長さを長くすると共に、段
付きの筒体にしたものである。Embodiment 2 FIG. 3 shows Embodiment 2 of the present invention. Instead of the intermediate cylinder 4 of Embodiment 1, the intermediate cylinder 4 of Embodiment 2 has a long axial length. In addition, it is a stepped cylinder.
【００４７】具体的に、上記中間筒４は、軸方向長さが
外筒５の軸方向長さより長く形成されて両端部が外筒５
の両端より突出している。更に、上記中間筒４の両端部
には、絞り部４２，４２が形成されて両端部が小径端部
４３，４３に形成されている。Specifically, the intermediate cylinder 4 is formed such that its axial length is longer than the axial length of the outer cylinder 5, and both ends thereof are the outer cylinder 5.
Protruding from both ends of. Further, narrowed portions 42, 42 are formed at both ends of the intermediate cylinder 4, and both ends are formed as small-diameter end portions 43, 43.
【００４８】一方、樹脂ブラケット２のフランジ片２
２，２２は、外筒５の端面を覆って中間筒４の外周面ま
で形成され、つまり、中間筒４の端面を覆っていない。On the other hand, the flange piece 2 of the resin bracket 2
2, 22 are formed up to the outer peripheral surface of the intermediate cylinder 4 covering the end surface of the outer cylinder 5, that is, not covering the end surface of the intermediate cylinder 4.
【００４９】したがって、本実施形態２によれば、中間
筒４に小径端部４３，４３を形成するようにしたため
に、該小径端部４３，４３における外筒５と中間筒４と
の間隔が大きくなり、樹脂が入り易くなり、侵入凸部２
４，２４を確実に形成することができる。Therefore, according to the second embodiment, since the small diameter end portions 43, 43 are formed in the intermediate cylinder 4, the distance between the outer cylinder 5 and the intermediate cylinder 4 at the small diameter end portions 43, 43 is small. It becomes large, and it becomes easy for resin to enter, and the intruding protrusion 2
4 and 24 can be formed reliably.
【００５０】また、樹脂ブラケット２を形成するに当
り、液体封入ブッシュ１を金型にセットした際、中間筒
４の端面を金型に当接させることができるので、金型に
対する液体封入ブッシュ１の位置決めを容易に行うこと
ができる。In forming the resin bracket 2, when the liquid-filled bush 1 is set in the mold, the end face of the intermediate cylinder 4 can be brought into contact with the mold, so that the liquid-filled bush 1 for the mold is formed. Can be easily positioned.
【００５１】[0051]
【発明の他の実施の形態】上記各実施形態においては、
２つの液室６１，６１を有するものについて説明した
が、本発明は、３つ以上の液室６１，６１，…を有する
ものであってもよい。Other Embodiments of the Invention In the above respective embodiments,
Although one having two liquid chambers 61, 61 has been described, the present invention may have three or more liquid chambers 61, 61, ....
【００５２】また、上記実施形態２の中間筒４に小径端
部４３，４３を形成するようにしたが、請求項２に係る
発明では、必ずしも小径端部４３，４３を形成する必要
はない。Further, although the small diameter end portions 43, 43 are formed on the intermediate cylinder 4 of the second embodiment, the small diameter end portions 43, 43 do not necessarily have to be formed in the invention according to claim 2.
【図１】本発明の実施形態を示す樹脂ブラケットを備え
た液体封入ブッシュの横断面図である。FIG. 1 is a cross-sectional view of a liquid-filled bush provided with a resin bracket showing an embodiment of the present invention.
【図２】図１のＡ−Ａにおける断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】実施形態２を示す図１のＡ−Ａにおける断面図
である。FIG. 3 is a sectional view taken along line AA of FIG. 1 showing a second embodiment.
１ 液体封入ブッシュ １１ 液体 ２ 樹脂ブラケット ２１ 筒状本体 ２２ フランジ片 ２４ 侵入凸部 ３ 内筒 ４ 中間筒 ４１ 窓部 ４２ 絞り部 ４３ 小径端部 ５ 外筒 ６ 弾性体 ６１ 液室 ６２ オリフィス通路 ６３ シール層 1 Liquid Encapsulation Bushing 11 Liquid 2 Resin Bracket 21 Cylindrical Main Body 22 Flange Piece 24 Entry Convex Part 3 Inner Cylinder 4 Intermediate Cylinder 41 Window Part 42 Throttling Part 43 Small Diameter End 5 Outer Cylinder 6 Elastic Body 61 Liquid Chamber 62 Orifice Passage 63 Seal layer
Claims (3)
と、 上記内筒と外筒との間に設けられて該内筒と外筒とを連
結する弾性体と、 上記内筒と外筒との間に配置されて弾性体内に埋め込ま
れ、且つ周方向に複数個の窓部が形成された中間筒と、 該中間筒の窓部に対応して弾性体に形成され、非圧縮性
の液体が封入された複数の液室と、 上記弾性体に形成され、各液室に連通して液体の移動可
能なオリフィス通路とを備えた液体封入ブッシュにおい
て、 上記外筒の外周面を被覆する筒状本体と、該筒状本体の
両端に連続形成されて筒状本体から求心方向に延びる内
向きのフランジ片とを少なくとも備えた樹脂ブラケット
が設けられ、 該樹脂ブラケットのフランジ片は、外筒の両端面から中
間筒の両端面に亘って該外筒及び中間筒の端面を被覆す
るように形成される共に、外筒と中間筒の間の端部より
内方に入り込んで弾性体に接する侵入凸部が一体形成さ
れていることを特徴とする液体封入ブッシュの樹脂ブラ
ケット構造。1. An inner cylinder, an outer cylinder concentrically arranged with the inner cylinder so as to cover the inner cylinder, and an inner cylinder and an outer cylinder provided between the inner cylinder and the outer cylinder. An elastic body that connects the inner cylinder and the outer cylinder, an intermediate cylinder that is disposed between the inner cylinder and the outer cylinder and is embedded in the elastic body, and that has a plurality of windows formed in the circumferential direction; A liquid having a plurality of liquid chambers correspondingly formed in an elastic body and in which an incompressible liquid is sealed, and an orifice passage formed in the elastic body and communicating with each liquid chamber so that the liquid can move. In the enclosed bush, a resin bracket including at least a tubular body that covers the outer peripheral surface of the outer tube, and inward flange pieces that are continuously formed at both ends of the tubular body and extend in the centripetal direction from the tubular body. The flange piece of the resin bracket is provided from the both end surfaces of the outer cylinder to the both end surfaces of the intermediate cylinder. And a liquid which is formed so as to cover the end surface of the intermediate cylinder and integrally formed with an intruding convex portion that enters inward from the end portion between the outer cylinder and the intermediate cylinder and contacts the elastic body. Enclosed bush resin bracket structure.
と、 上記内筒と外筒との間に設けられて該内筒と外筒とを連
結する弾性体と、 上記内筒と外筒との間に配置されて弾性体内に埋め込ま
れ、且つ周方向に複数個の窓部が形成された中間筒と、 該中間筒の窓部に対応して弾性体に形成され、非圧縮性
の液体が封入された複数の液室と、 上記弾性体に形成され、各液室に連通して液体の移動可
能なオリフィス通路とを備えた液体封入ブッシュにおい
て、 上記中間筒は、両端が外筒の両端部より突出するように
該外筒より長く形成される一方、 上記外筒の外周面を被覆する筒状本体と、該筒状本体の
両端に連続形成されて筒状本体から求心方向に延びる内
向きのフランジ片とを少なくとも備えた樹脂ブラケット
が設けられ、 該樹脂ブラケットのフランジ片は、外筒の両端面から中
間筒の外周面に亘って該外筒の端面を被覆するように形
成される共に、外筒と中間筒の間の端部より内方に入り
込んで弾性体に接する侵入凸部が一体形成されているこ
とを特徴とする液体封入ブッシュの樹脂ブラケット構
造。2. An inner cylinder, an outer cylinder arranged concentrically with the inner cylinder so as to cover the inner cylinder, and an inner cylinder and an outer cylinder provided between the inner cylinder and the outer cylinder. An elastic body that connects the inner cylinder and the outer cylinder, an intermediate cylinder that is disposed between the inner cylinder and the outer cylinder and is embedded in the elastic body, and that has a plurality of windows formed in the circumferential direction; A liquid having a plurality of liquid chambers correspondingly formed in an elastic body and in which an incompressible liquid is sealed, and an orifice passage formed in the elastic body and communicating with each liquid chamber so that the liquid can move. In the enclosing bush, the intermediate cylinder is formed longer than the outer cylinder so that both ends thereof protrude from both ends of the outer cylinder, while the cylindrical main body covering the outer peripheral surface of the outer cylinder and the cylindrical main body of the cylindrical main body. Provided is a resin bracket which is continuously formed at both ends and has at least an inward flange piece extending in the centripetal direction from the cylindrical body. The flange piece of the resin bracket is formed so as to cover the end surface of the outer cylinder from both end surfaces of the outer cylinder to the outer peripheral surface of the intermediate cylinder. A resin bracket structure for a liquid-filled bush, characterized in that an intruding protrusion that comes inward and contacts the elastic body is integrally formed.
ブラケット構造において、 中間筒は、両端部が小径に絞られた段付きの筒体に形成
されていることを特徴とする液体封入ブッシュの樹脂ブ
ラケット構造。3. The resin bracket structure for a liquid-filled bush according to claim 2, wherein the intermediate cylinder is formed as a stepped cylinder whose both ends are narrowed to a small diameter. Resin bracket structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33002395A JP3838581B2 (en) | 1995-12-19 | 1995-12-19 | Resin bracket structure of liquid-filled bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33002395A JP3838581B2 (en) | 1995-12-19 | 1995-12-19 | Resin bracket structure of liquid-filled bush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09170642A true JPH09170642A (en) | 1997-06-30 |
| JP3838581B2 JP3838581B2 (en) | 2006-10-25 |
Family
ID=18227917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33002395A Expired - Fee Related JP3838581B2 (en) | 1995-12-19 | 1995-12-19 | Resin bracket structure of liquid-filled bush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3838581B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0896168A1 (en) * | 1997-08-07 | 1999-02-10 | Tokai Rubber Industries, Ltd. | Elastic mounting device including fluid-filled elastic mount and synthetic resin bracket for fixing the elastic mount, and method of manufacturing the same |
-
1995
- 1995-12-19 JP JP33002395A patent/JP3838581B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0896168A1 (en) * | 1997-08-07 | 1999-02-10 | Tokai Rubber Industries, Ltd. | Elastic mounting device including fluid-filled elastic mount and synthetic resin bracket for fixing the elastic mount, and method of manufacturing the same |
| US5906360A (en) * | 1997-08-07 | 1999-05-25 | Tokai Rubber Industries, Ltd. | Elastic mounting device including fluid-filled elastic mount and synthetic resin bracket for fixing the elastic mount, and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3838581B2 (en) | 2006-10-25 |
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