JP4188126B2

JP4188126B2 - Vehicle suspension system

Info

Publication number: JP4188126B2
Application number: JP2003104805A
Authority: JP
Inventors: 幸弘織本
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2003-04-09
Filing date: 2003-04-09
Publication date: 2008-11-26
Anticipated expiration: 2023-04-09
Also published as: JP2004308825A

Description

【０００１】
【発明の属する技術分野】
本発明は、トレーリングアームの先端部を車体に、該トレーリングアームの車体に対する車体前後方向の移動を許容する筒状の防振ゴムを介して弾性支持した車両用サスペンション装置であって、前記防振ゴムの外周面に固定されて該防振ゴムを前記トレーリングアームに取り付ける第１部材と、前記防振ゴムの内周面に固定されて該防振ゴムを車体に取り付ける第２部材と、を備えた車両用サスペンション装置に関する。
【０００２】
【従来の技術】
エンジンマウント、ボディマウント、デフマウント、サスペンション用のブッシュ等に用いられる液封型の車両用サスペンション装置において、外筒金具および内筒金具をゴム弾性体で接続し、ゴム弾性体の内部に形成した受圧室および平衡室をオリフィス通路を介して連通させ、振動入力に伴うゴム弾性体の変形に応じて受圧室および平衡室に封入した非圧縮性流体がオリフィス通路を通過する際の共振作用で、前記振動入力に対する防振機能を発揮させるものが、下記特許文献により公知である。
【０００３】
【特許文献】
特開２０００−１２０７６１号公報
【０００４】
【発明が解決しようとする課題】
ところで上記従来の車両用サスペンション装置は、ゴム弾性体の内部に受圧室、平衡室、オリフィス通路等を形成する必要があるため、その構造が複雑化して製造コストが増加するだけでなく、寸法や重量が増加してレイアウトの自由度が損なわれる問題があった。
【０００５】
本発明は前述の事情に鑑みてなされたもので、構造が簡単で小型軽量でありながら、高い減衰性能を発揮し得る車両用サスペンション装置を提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載された発明によれば、トレーリングアームの先端部を車体に、該トレーリングアームの車体に対する車体前後方向の移動を許容する筒状の防振ゴムを介して弾性支持した車両用サスペンション装置であって、前記防振ゴムの外周面に固定されて該防振ゴムを前記トレーリングアームに取り付ける第１部材と、前記防振ゴムの内周面に固定されて該防振ゴムを車体に取り付ける第２部材とを備えたものにおいて、前記防振ゴムには、前記第２部材の前後方向一方側において、該防振ゴムを軸方向に貫通する空間部を設けると共に、この空間部の内面の車体前後方向一側に、該内面の車体前後方向他側に先端が当接する突出部を形成し、前記防振ゴムの内部には、前記第２部材の上下方向少なくとも一方側において、ゴム以外の材質で形成された摩擦部材を非接着の状態で埋め込み、前記トレーリングアームからの荷重による前記防振ゴムの変形により、摩擦力に抗して防振ゴムおよび摩擦部材間に滑りを発生させることを特徴とする防振装置が提案される。
【０００７】
上記構成によれば、第１部材および第２部材を接続する防振ゴムの内部にゴム以外の材質の摩擦部材を非接着の状態で埋め込んだので、荷重による第１部材および第２部材の相対変位で防振ゴムが変形すると、防振ゴムおよび摩擦部材間に滑りが発生し、その滑りに伴う摩擦力で高い減衰性能を発揮させることができる。しかも防振ゴムの内部に摩擦部材を埋め込むだけの簡単な構造であるために低コストで製造可能であり、しかも小型軽量であるためにレイアウトの自由度が高められる。また、トレーリングアームから大きな荷重が入力されると、前記突出部の当接面が密着して防振ゴムの過剰な変形を抑制する。
【０００８】
また請求項４に記載された発明によれば、トレーリングアームの先端部を車体に、該トレーリングアームの車体に対する車体前後方向の移動を許容する筒状の防振ゴムを介して弾性支持した車両用サスペンション装置であって、前記防振ゴムの外周面に固定されて該防振ゴムを前記トレーリングアームに取り付ける第１部材と、前記防振ゴムの内周面に固定されて該防振ゴムを車体に取り付ける第２部材とを備えたものにおいて、前記防振ゴムには、前記第２部材の前後方向一方側において、該防振ゴムを軸方向に貫通する空間部を設けると共に、この空間部の内面の車体前後方向一側に、該内面の車体前後方向他側に先端が当接する突出部を形成し、前記防振ゴムの内部には、前記第２部材の上下方向少なくとも一方側において、前記防振ゴムに切れ目を設けることで相対向する摩擦面を形成し、前記トレーリングアームからの荷重による前記防振ゴムの変形により、摩擦力に抗して前記摩擦面間に滑りを発生させることを特徴とする防振装置が提案される。
【０００９】
上記構成によれば、第１部材および第２部材を接続する防振ゴムに切れ目を設けることで相対向する摩擦面を形成したので、荷重による第１部材および第２部材の相対変位で防振ゴムが変形すると、相対向する摩擦面間に滑りが発生し、その滑りに伴う摩擦力で高い減衰性能を発揮させることができる。しかも防振ゴムに切れ目を設けるだけの簡単な構造であるために、特別の部材が不要になって更に低コストで製造可能であり、しかも小型軽量であるためにレイアウトの自由度が高められる。また、トレーリングアームから大きな荷重が入力されると、前記突出部の当接面が密着して防振ゴムの過剰な変形を抑制する。
【００１０】
尚、実施例のアウターカラー１２は本発明の第１部材に対応し、実施例のインナーカラー１３は本発明の第２部材に対応し、実施例のボール１５，１７および波板１６は本発明の摩擦部材に対応する。また実施例の第２空間部１４ｂは本発明の空間部に対応する。
【００１１】
【発明の実施の形態】
以下、本発明の実施の形態を、添付図面に示した本発明の実施例に基づいて説明する。
【００１２】
図１〜図３は本発明の第１実施例を示すもので、図１はコンプライアンスブッシュの側面図、図２は図１の２−２線断面図、図３は図１の３−３線断面図である。
【００１３】
サスペンション装置のトレーリングアームＡの先端部を車体に弾性支持するとともに、トレーリングアームＡの車体前後方向の移動を許容するコンプライアンスブッシュＢは、トレーリングアームＡの先端部に形成された円形の取付孔１１に圧入により固定されるアウターカラー１２と、ボルトが貫通するボルト孔１３ａを有して車体側の取付ブラケットに固定されるインナーカラー１３と、アウターカラー１２の内周面およびインナーカラー１３の外周面間に焼き付けにより固定された筒状の防振ゴム１４とを備える。矢印ａ−ｂで示す前後方向の荷重が加わってアウターカラー１２およびインナーカラー１３が相対変位したとき、防振ゴム１４は弾性変形して衝撃を吸収する。
【００１４】
防振ゴム１４は、その軸方向である両側面に貫通する第１空間部１４ａ、第２空間部１４ｂおよび２個の第３空間部１４ｃ，１４ｃを備えており、第２空間部１４ｂは荷重が入力される車体前後方向に対して直交する当接面を有する突出部１４ｄで二つに分離される。コンプライアンスブッシュＢの軸線Ｌの上下二つの位置にそれぞれ貫通孔１４ｅ，１４ｅが形成されており、貫通孔１４ｅ，１４ｅの中央部に形成した大径部１４ｆ，１４ｆに金属製のボール１５，１５が圧入される。ボール１５，１５は防振ゴム１４の弾性により大径部１４ｆ，１４ｆに保持され、貫通孔１４ｅ，１４ｅから脱落することはない。
【００１５】
しかして、車両の走行に伴ってトレーリングアームＡからコンプライアンスブッシュＢのアウターカラー１１に車体前後方向の荷重が加わると、防振ゴム１４は第１空間部１４ａ、第２空間部１４ｂおよび第３空間部１４ｃ，１４ｃの作用で容易に弾性変形してアウターカラー１２およびインナーカラー１３の車体前後方向の相対変位を可能にし、車輪からトレーリングアームＡを経て車体に伝達される衝撃を緩衝することができる。車輪が障害物に乗り上げたような場合に、トレーリングアームＡからコンプライアンスブッシュＢに大きな荷重が入力されると、防振ゴム１４の第２空間部１４ｂを二つに分離する突出部１４ｄの当接面が密着し、防振ゴム１４の過剰な変形を抑制する。
【００１６】
このようにトレーリングアームＡからの荷重の入力によって防振ゴム１４が変形すると、防振ゴム１４に埋め込まれた２個のボール１５，１５と貫通孔１４ｅ，１４ｅとの接触部が滑って摩擦力が作用するため、その摩擦力で防振ゴム１４の振動を効果的に減衰させることができる。
【００１７】
以上のように、本実施例によれば、コンプライアンスブッシュＢの防振ゴム１４に形成した貫通孔１４ｅ，１４ｅにボール１５，１５を圧入するだけの簡単な構造で効果的な減衰性能を得ることができ、しかも従来の液封型のものに比べて低コストで製造可能であるばかりか、小型軽量であるためにレイアウトの自由度も増加する。
【００１８】
次に、図４に基づいて上記第１実施例の変形例を説明する。
【００１９】
第１実施例では防振ゴム１４に形成した貫通孔１４ｅ，１４ｅにボール１５，１５を圧入しているが、本変形例は前記貫通孔１４ｅ，１４ｅを、防振ゴム１４の一方の側面だけに開口する盲孔１４ｇ，１４ｇに代えたものである。この変形例によっても、上記第１実施例と同様の作用効果を達成することができる。
【００２０】
次に、図５および図６に基づいて本発明の第２実施例を説明する。
【００２１】
第２実施例は、第１実施例の２個のボール１５，１５に代えて２枚の金属製の波板１６，１６を採用したものであり、それらの波板１６，１６は軸線Ｌの上下の防振ゴム１４に波の山と谷が車体前後方向に並ぶように埋め込まれる。波板１６，１６は防振ゴム１４を金型で加硫成形するときに内部に埋め込まれるが、その際に接着剤を使用しないことで、波板１６，１６と防振ゴム１４とは相互に滑れるように接触している。
【００２２】
従って、トレーリングアームＡからの荷重の入力によって防振ゴム１４が変形すると、防振ゴム１４に埋め込まれた２枚の波板１６，１６と防振ゴム１４との接触部が滑って摩擦力が作用するため、その摩擦力で防振ゴム１４の振動を効果的に減衰させることができる。この第２実施例によっても、上記第１実施例と同様の作用効果を達成することができる。
【００２３】
次に、図７に基づいて上記第２実施例の変形例を説明する。
【００２４】
第２実施例では防振ゴム１４に波板１６，１６を埋め込んでしているが、本変形例は前記波板１６，１６に代えてボール１７，１７を防振ゴム１４に埋め込み、防振ゴム１４の変形時にボール１７，１７との接触部に滑りによる摩擦力を発生させるものである。この変形例によっても、前記第２実施例と同様の作用効果を達成することができる。
【００２５】
次に、図８に基づいて本発明の第３実施例を説明する。
【００２６】
第３実施例は、軸線Ｌの上方（下方あるいは上下両方でも良い）の防振ゴム１４に「く」字状の切れ目１４ｈを形成したものであり、その切れ目１４ｈの２か所に相互に接触する摩擦面１４ｉ，１４ｉが形成される。
【００２７】
従って、トレーリングアームＡからの荷重の入力によって防振ゴム１４が変形すると、防振ゴム１４の切れ目１４ｈの摩擦面１４ｉ，１４ｉが滑って摩擦力が作用するため、その摩擦力で防振ゴム１４の振動を効果的に減衰させることができる。この第３実施例によっても、上記第１実施例と同様の作用効果を達成することができ、しかも他部材を埋め込む必要がないので部品点数が更に削減されて一層のコストダウンが達成される。
【００２８】
以上、本発明の実施例を説明したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。
【００２９】
例えば、実施例ではサスペンション用のコンプライアンスブッシュＢを例示したが、本発明はエンジンマウント、ボディマウント、デフマウント等の任意の用途に適用可能である。
【００３０】
また本発明の摩擦部材はボール１５，１７や波板１６に限定されず、その形状、材質、取付位置、数等は適宜変更可能である。
【００３１】
また切れ目１４ｈの形状、形成位置、数等も適宜変更可能である。
【００３２】
また本発明の第１、第２部材は同心に配置された環状部材である必要はなく、相互に対向するように配置された板状部材であっても良い。
【００３３】
【発明の効果】
以上のように請求項１に記載された発明によれば、第１部材および第２部材を接続する防振ゴムの内部にゴム以外の材質の摩擦部材を非接着の状態で埋め込んだので、荷重による第１部材および第２部材の相対変位で防振ゴムが変形すると、防振ゴムおよび摩擦部材間に滑りが発生し、その滑りに伴う摩擦力で高い減衰性能を発揮させることができる。しかも防振ゴムの内部に摩擦部材を埋め込むだけの簡単な構造であるために低コストで製造可能であり、しかも小型軽量であるためにレイアウトの自由度が高められる。また、トレーリングアームから大きな荷重が入力されると、前記突出部の当接面が密着して防振ゴムの過剰な変形を抑制する。
【００３４】
また請求項２に記載された発明によれば、第１部材および第２部材を接続する防振ゴムに切れ目を設けることで相対向する摩擦面を形成したので、荷重による第１部材および第２部材の相対変位で防振ゴムが変形すると、相対向する摩擦面間に滑りが発生し、その滑りに伴う摩擦力で高い減衰性能を発揮させることができる。しかも防振ゴムに切れ目を設けるだけの簡単な構造であるために、特別の部材が不要になって更に低コストで製造可能であり、しかも小型軽量であるためにレイアウトの自由度が高められる。また、トレーリングアームから大きな荷重が入力されると、前記突出部の当接面が密着して防振ゴムの過剰な変形を抑制する。
【図面の簡単な説明】
【図１】第１実施例に係るコンプライアンスブッシュの側面図
【図２】図１の２−２線断面図
【図３】図１の３−３線断面図
【図４】第１実施例に変形例に係る、前記図３に対応する図
【図５】第２実施例に係るコンプライアンスブッシュの側面図
【図６】図５の６−６線断面図
【図７】第２実施例の変形例に係る、前記図６に対応する図
【図８】第３実施例に係る、前記図３に対応する図
【符号の説明】
１２アウターカラー（第１部材）
１３インナーカラー（第２部材）
１４防振ゴム
１４ｂ第２空間部（空間部）
１４ｄ突出部
１４ｈ切れ目
１４ｉ摩擦面
１５ボール（摩擦部材）
１６波板（摩擦部材）
１７ボール（摩擦部材）
Ａトレーリングアーム [0001]
BACKGROUND OF THE INVENTION
The present invention is a vehicle suspension apparatus in which a leading end portion of a trailing arm is elastically supported on a vehicle body via a cylindrical vibration- proof rubber that allows the trailing arm to move in the vehicle longitudinal direction with respect to the vehicle body. A first member fixed to the outer peripheral surface of the anti-vibration rubber and attaching the anti-vibration rubber to the trailing arm; a second member fixed to the inner peripheral surface of the anti-vibration rubber and attaching the anti-vibration rubber to the vehicle body; The present invention relates to a vehicular suspension apparatus.
[0002]
[Prior art]
In liquid-sealed vehicle suspension devices used for engine mounts, body mounts, differential mounts, suspension bushings, etc., the outer cylinder fitting and the inner cylinder fitting are connected by a rubber elastic body and formed inside the rubber elastic body. The pressure receiving chamber and the equilibrium chamber communicate with each other through the orifice passage, and the resonance action when the incompressible fluid sealed in the pressure receiving chamber and the equilibrium chamber passes through the orifice passage according to the deformation of the rubber elastic body accompanying the vibration input. A device that exhibits an anti-vibration function against the vibration input is known from the following patent document.
[0003]
[Patent Literature]
Japanese Patent Laid-Open No. 2000-120761
[Problems to be solved by the invention]
By the way, the conventional vehicle suspension device needs to form a pressure receiving chamber, an equilibrium chamber, an orifice passage and the like inside the rubber elastic body, so that not only the structure becomes complicated and the manufacturing cost increases, but also the dimensions and There is a problem that the freedom of layout is lost due to an increase in weight.
[0005]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle suspension device that can exhibit high damping performance while having a simple structure and being small and light.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a cylindrical anti-vibration system that allows the front end of the trailing arm to move to the vehicle body and allows the trailing arm to move in the longitudinal direction of the vehicle body. A suspension device for a vehicle elastically supported via rubber, the first member being fixed to the outer peripheral surface of the anti-vibration rubber and attaching the anti-vibration rubber to the trailing arm, and the inner peripheral surface of the anti-vibration rubber And a second member for attaching the vibration isolating rubber to the vehicle body. The vibration isolating rubber penetrates the vibration isolating rubber in the axial direction on one side in the front-rear direction of the second member. A space portion is provided, and a protruding portion whose tip is in contact with the other side of the inner surface in the vehicle longitudinal direction is formed on one side of the inner surface of the space portion in the longitudinal direction of the vehicle body . At least one in the vertical direction of the member On the side, embedding the friction member made of a material other than rubber in a non-adhesive state, the deformation of the vibration isolating rubber due to the load from the trailing arms, anti-vibration rubber and between the friction member against the frictional force An anti-vibration device characterized by causing slippage is proposed.
[0007]
According to the above configuration, since the friction member made of a material other than rubber is embedded in the non-adhesive state inside the anti-vibration rubber connecting the first member and the second member, the relative relationship between the first member and the second member due to the load When the anti-vibration rubber is deformed by the displacement, slip occurs between the anti-vibration rubber and the friction member, and high damping performance can be exhibited by the frictional force accompanying the slip. In addition, since it has a simple structure in which the friction member is embedded in the vibration-proof rubber, it can be manufactured at low cost, and since it is small and light, the degree of freedom in layout is increased. Further, when a large load is input from the trailing arm, the abutment surface of the projecting portion is brought into close contact with the anti-vibration rubber and excessive deformation is suppressed.
[0008]
According to the invention described in claim 4 , the leading end portion of the trailing arm is elastically supported on the vehicle body via the cylindrical vibration-proof rubber that allows the trailing arm to move in the longitudinal direction of the vehicle body. A suspension device for a vehicle, the first member being fixed to the outer peripheral surface of the vibration isolating rubber and attaching the vibration isolating rubber to the trailing arm, and the vibration isolator being fixed to the inner peripheral surface of the anti vibration isolating rubber And a second member for attaching the rubber to the vehicle body, the anti-vibration rubber is provided with a space portion passing through the anti-vibration rubber in the axial direction on one side in the front-rear direction of the second member. A protrusion is formed on one side of the inner surface of the space in the front-rear direction of the vehicle body, with a tip abutting on the other side of the inner surface of the vehicle body in the front-rear direction, and at least one side of the second member in the vertical direction inside the anti-vibration rubber in the vibration-proof Wherein the friction surfaces facing each other by providing the cut formed in the beam by deformation of the vibration isolating rubber due to the load from the trailing arm, that cause a slip between the friction surface against the frictional force A vibration isolator is proposed.
[0009]
According to the above configuration, since the opposing friction surfaces are formed by providing a cut in the vibration isolating rubber connecting the first member and the second member, the vibration isolating is caused by the relative displacement of the first member and the second member due to the load. When the rubber is deformed, slip occurs between the friction surfaces facing each other, and high damping performance can be exhibited by the frictional force accompanying the slip. In addition, since the anti-vibration rubber has a simple structure in which only a cut is provided, a special member is not necessary and the rubber can be manufactured at a lower cost. Further, since it is small and light, the flexibility of layout is increased. Further, when a large load is input from the trailing arm, the abutment surface of the projecting portion is brought into close contact with the anti-vibration rubber and excessive deformation is suppressed.
[0010]
The outer collar 12 of the example corresponds to the first member of the present invention, the inner collar 13 of the example corresponds to the second member of the present invention, and the balls 15 and 17 and the corrugated plate 16 of the example correspond to the present invention. Corresponds to the friction member. Further, the second space portion 14b of the embodiment corresponds to the space portion of the present invention.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.
[0012]
1 to 3 show a first embodiment of the present invention. FIG. 1 is a side view of a compliance bush, FIG. 2 is a sectional view taken along line 2-2 in FIG. 1, and FIG. It is sectional drawing.
[0013]
A compliance bush B that elastically supports the leading end of the trailing arm A of the suspension device on the vehicle body and allows the trailing arm A to move in the longitudinal direction of the vehicle body is a circular mounting formed on the leading end of the trailing arm A. An outer collar 12 fixed to the hole 11 by press fitting, an inner collar 13 having a bolt hole 13a through which the bolt passes and fixed to a mounting bracket on the vehicle body side, an inner peripheral surface of the outer collar 12 and an inner collar 13 And a cylindrical anti-vibration rubber 14 fixed between the outer peripheral surfaces by baking. When a load in the front-rear direction indicated by arrows ab is applied and the outer collar 12 and the inner collar 13 are relatively displaced, the vibration isolating rubber 14 is elastically deformed to absorb the impact.
[0014]
The anti-vibration rubber 14 includes a first space portion 14a, a second space portion 14b, and two third space portions 14c, 14c penetrating on both side surfaces that are the axial direction, and the second space portion 14b is a load. Is separated into two by a projecting portion 14d having a contact surface orthogonal to the vehicle body longitudinal direction. Through holes 14e and 14e are formed at two positions above and below the axis L of the compliance bush B, and metal balls 15 and 15 are formed on the large diameter portions 14f and 14f formed at the center of the through holes 14e and 14e. Press fit. The balls 15 and 15 are held by the large-diameter portions 14f and 14f due to the elasticity of the vibration isolating rubber 14, and do not fall off from the through holes 14e and 14e.
[0015]
Accordingly, when a load in the longitudinal direction of the vehicle body is applied from the trailing arm A to the outer collar 11 of the compliance bush B as the vehicle travels, the anti-vibration rubber 14 has the first space portion 14a, the second space portion 14b, and the third space portion. space 14c, that are easily elastically deformed by the action of 14c enables longitudinal direction of the vehicle body relative displacement of the outer collar 12 and inner collar 13, to buffer the shock transmitted to the vehicle body via the trailing arm a from the wheel Can do. If a large load is input from the trailing arm A to the compliance bush B when the wheel rides on an obstacle, the contact of the projecting portion 14d that separates the second space portion 14b of the anti-vibration rubber 14 into two parts. The contact surface is in close contact, and excessive deformation of the vibration isolating rubber 14 is suppressed.
[0016]
When the vibration isolating rubber 14 is deformed by the input of the load from the trailing arm A in this way, the contact portion between the two balls 15 and 15 embedded in the vibration isolating rubber 14 and the through holes 14e and 14e slips to cause friction. Since the force acts, the vibration of the anti-vibration rubber 14 can be effectively damped by the friction force.
[0017]
As described above, according to the present embodiment, effective damping performance can be obtained with a simple structure in which the balls 15 and 15 are press-fitted into the through holes 14e and 14e formed in the vibration-proof rubber 14 of the compliance bush B. In addition, it can be manufactured at a lower cost than the conventional liquid-sealed type, and it is small and light, so that the degree of freedom in layout increases.
[0018]
Next, a modification of the first embodiment will be described with reference to FIG.
[0019]
In the first embodiment, the balls 15 and 15 are press-fitted into the through holes 14e and 14e formed in the vibration isolating rubber 14, but in this modification, the through holes 14e and 14e are disposed only on one side surface of the vibration isolating rubber 14. The blind holes 14g and 14g are opened. This modification can also achieve the same effects as those of the first embodiment.
[0020]
Next, a second embodiment of the present invention will be described with reference to FIGS.
[0021]
The second embodiment employs two metal corrugated plates 16, 16 in place of the two balls 15, 15 of the first embodiment. Wave peaks and valleys are embedded in the upper and lower anti-vibration rubbers 14 so as to be aligned in the longitudinal direction of the vehicle body . The corrugated plates 16 and 16 are embedded inside when the anti-vibration rubber 14 is vulcanized with a mold, but the corrugated plates 16 and 16 and the anti-vibration rubber 14 are mutually connected by using no adhesive. It is touching so that it can slide.
[0022]
Accordingly, when the vibration isolating rubber 14 is deformed by the input of the load from the trailing arm A, the contact portion between the two corrugated plates 16 and 16 embedded in the anti vibration isolating rubber 14 and the anti vibration isolating rubber 14 slips and causes frictional force. Therefore, the vibration of the anti-vibration rubber 14 can be effectively damped by the friction force. According to the second embodiment, the same function and effect as the first embodiment can be achieved.
[0023]
Next, a modification of the second embodiment will be described with reference to FIG.
[0024]
In the second embodiment, the corrugated plates 16 and 16 are embedded in the anti-vibration rubber 14. However, in this modified example, balls 17 and 17 are embedded in the anti-vibration rubber 14 instead of the corrugated plates 16 and 16. When the rubber 14 is deformed, a frictional force due to sliding is generated at a contact portion with the balls 17 and 17. This modification can also achieve the same effects as those of the second embodiment.
[0025]
Next, a third embodiment of the present invention will be described with reference to FIG.
[0026]
In the third embodiment, a "<"-shaped cut 14h is formed on the anti-vibration rubber 14 above the axis L (which may be below or both above and below), and two points of the cut 14h are in contact with each other. The friction surfaces 14i and 14i are formed.
[0027]
Accordingly, when the vibration isolating rubber 14 is deformed by the input of a load from the trailing arm A, the friction surfaces 14i and 14i of the cut 14h of the vibration isolating rubber 14 slide and a frictional force acts. 14 vibrations can be effectively damped. According to the third embodiment, the same effects as those of the first embodiment can be achieved. Further, since it is not necessary to embed other members, the number of parts is further reduced, and further cost reduction is achieved.
[0028]
Although the embodiments of the present invention have been described above, various design changes can be made without departing from the scope of the present invention.
[0029]
For example, in the embodiment, the compliance bush B for suspension is illustrated, but the present invention can be applied to any application such as an engine mount, a body mount, and a differential mount.
[0030]
Further, the friction member of the present invention is not limited to the balls 15 and 17 and the corrugated plate 16, and the shape, material, mounting position, number, and the like can be appropriately changed.
[0031]
Further, the shape, formation position, number, and the like of the cut 14h can be appropriately changed.
[0032]
Moreover, the 1st, 2nd member of this invention does not need to be the annular member arrange | positioned concentrically, The plate-shaped member arrange | positioned so that it may mutually oppose may be sufficient.
[0033]
【The invention's effect】
As described above, according to the first aspect of the present invention, the friction member made of a material other than rubber is embedded in the non-adhering state inside the vibration-proof rubber connecting the first member and the second member. When the anti-vibration rubber is deformed by the relative displacement of the first member and the second member due to the above, slip occurs between the anti-vibration rubber and the friction member, and high damping performance can be exhibited by the frictional force accompanying the slip. In addition, since it has a simple structure in which the friction member is embedded in the vibration-proof rubber, it can be manufactured at low cost, and since it is small and light, the degree of freedom in layout is increased. Further, when a large load is input from the trailing arm, the abutment surface of the projecting portion is brought into close contact with the anti-vibration rubber and excessive deformation is suppressed.
[0034]
According to the invention described in claim 2, since the opposing friction surfaces are formed by providing a cut in the vibration isolating rubber connecting the first member and the second member, the first member and the second member due to the load are formed. When the anti-vibration rubber is deformed by the relative displacement of the member, slip occurs between the friction surfaces facing each other, and high damping performance can be exhibited by the friction force accompanying the slip. In addition, since the anti-vibration rubber has a simple structure in which only a cut is provided, a special member is not necessary and the rubber can be manufactured at a lower cost. Further, since it is small and light, the flexibility of layout is increased. Further, when a large load is input from the trailing arm, the abutment surface of the projecting portion is brought into close contact with the anti-vibration rubber and excessive deformation is suppressed.
[Brief description of the drawings]
1 is a side view of a compliance bush according to a first embodiment. FIG. 2 is a sectional view taken along line 2-2 in FIG. 1. FIG. 3 is a sectional view taken along line 3-3 in FIG. FIG. 5 is a diagram corresponding to FIG. 3 according to a modification. FIG. 5 is a side view of a compliance bush according to a second embodiment. FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. FIG. 8 is a diagram corresponding to FIG. 6 according to the example. FIG. 8 is a diagram corresponding to FIG. 3 according to the third embodiment.
12 Outer collar (first member)
13 Inner collar (second member)
14 Anti-vibration rubber
14b 2nd space part (space part)
14d protrusion 14h cut 14i friction surface 15 ball (friction member)
16 Corrugated plate ( friction member)
17 balls (friction member)
A trailing arm

Claims

A suspension apparatus for a vehicle, in which the leading end of the trailing arm (A) is elastically supported on the vehicle body via a cylindrical vibration isolating rubber (14) that allows the trailing arm (A) to move in the longitudinal direction of the vehicle body. Because
A first member (12) fixed to the outer peripheral surface of the anti-vibration rubber (14) and attaching the anti-vibration rubber (14) to the trailing arm (A), and an inner peripheral surface of the anti-vibration rubber (14) And a second member (13) for fixing the vibration isolating rubber (14) to the vehicle body .
The anti-vibration rubber (14) is provided with a space (14b) penetrating the anti-vibration rubber (14) in the axial direction on one side in the front-rear direction of the second member (13). 14b) is formed on one side of the inner surface of the vehicle body in the longitudinal direction of the vehicle body with a projecting portion (14d) whose tip abuts on the other side of the inner surface of the vehicle body in the longitudinal direction.
In the anti-vibration rubber (14), friction members (15, 16, 17) made of a material other than rubber are unattached on at least one side in the vertical direction of the second member (13). embedded,
The deformation of the vibration isolating rubber (14) due to the load from the trailing arm (A), to generate a slip rubber cushion (14) and the friction member (15, 16, 17) between and against the frictional force A vehicle suspension device characterized by the above.

The suspension device for a vehicle according to claim 1, wherein the friction member (15, 17) is formed in a substantially spherical shape and is embedded in the vicinity of the center in the axial direction of the anti-vibration rubber (14).

The friction member (16) is a plate-like member formed in a corrugated plate shape, and wave peaks and valleys are embedded so as to be aligned in the vehicle body front-rear direction of the anti-vibration rubber (14). The vehicle suspension apparatus described.

A suspension apparatus for a vehicle, in which the leading end of the trailing arm (A) is elastically supported on the vehicle body via a cylindrical vibration isolating rubber (14) that allows the trailing arm (A) to move in the longitudinal direction of the vehicle body. Because
A first member (12) fixed to the outer peripheral surface of the anti-vibration rubber (14) and attaching the anti-vibration rubber (14) to the trailing arm (A), and an inner peripheral surface of the anti-vibration rubber (14) And a second member (13) for fixing the vibration isolating rubber (14) to the vehicle body .
The anti-vibration rubber (14) is provided with a space (14b) penetrating the anti-vibration rubber (14) in the axial direction on one side in the front-rear direction of the second member (13). 14b) is formed on one side of the inner surface of the vehicle body in the longitudinal direction of the vehicle body with a projecting portion (14d) whose tip abuts on the other side of the inner surface of the vehicle body in the longitudinal direction.
Inside the anti-vibration rubber (14), at least one side in the vertical direction of the second member (13), the anti-vibration rubber (14) is provided with a cut (14h) so as to face the friction surfaces (14i) facing each other. )
The vehicle suspension device according to claim 1, wherein the vibration isolating rubber (14) is deformed by a load from the trailing arm (A) to cause slippage between the friction surfaces (14i) against a frictional force.