JP4283853B2 - Link device - Google Patents

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JP4283853B2
JP4283853B2 JP2006553776A JP2006553776A JP4283853B2 JP 4283853 B2 JP4283853 B2 JP 4283853B2 JP 2006553776 A JP2006553776 A JP 2006553776A JP 2006553776 A JP2006553776 A JP 2006553776A JP 4283853 B2 JP4283853 B2 JP 4283853B2
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inner cylinder
cylindrical portion
axial direction
vibration isolator
cylindrical
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JPWO2006077622A1 (en
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昭 安川
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Toyo Tire Corp
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Toyo Tire and Rubber Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/387—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type comprising means for modifying the rigidity in particular directions

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Vibration Prevention Devices (AREA)

Description

本発明は、リンク装置に関し、例えば自動車のトルクロッドやサスペンションのリンク機構等に用いられるブッシュ型の防振装置を備えたリンク装置に関するものである。 The present invention relates to a link device, and more particularly to a link device provided with a bush-type vibration isolator used for a torque rod of an automobile, a link mechanism of a suspension, or the like.

従来より、ブッシュ型の防振装置として、内筒と外筒とを、これら内外の筒間に介設されたゴム弾性体により結合したものが知られている。通常、内筒がこれに挿嵌される軸部材を介して一方の支持部材に取り付けられ、外筒が他方の支持部材の筒状部に圧入されて固定されて、エンジン等の振動源の動きや振動を抑制する。   2. Description of the Related Art Conventionally, a bush type vibration isolator is known in which an inner cylinder and an outer cylinder are coupled by a rubber elastic body interposed between the inner and outer cylinders. Usually, the inner cylinder is attached to one support member via a shaft member inserted into the inner cylinder, and the outer cylinder is press-fitted and fixed to the cylindrical portion of the other support member to move the vibration source such as the engine. And suppress vibration.

この種のブッシュ型の防振装置においては、主たる荷重が軸直角方向に入力されるものがある。その場合、入力される荷重に対して柔らかいバネ特性を得るために、上記ゴム弾性体には荷重入力方向における内筒を挟んだ両側に軸方向に貫通する空洞部が設けられ、荷重入力方向に対して直交する内筒両側のゴム弾性体により内筒と外筒とが弾性的に結合されている。そして、このような防振装置においては、上記荷重入力方向における過大変位を制限するために、上記空洞部にストッパゴム部を設けることがある（例えば、日本国特開平１１−１１７９７３号公報、日本国特開２００４−３１６７９８号公報など）。
日本国特開平１１−１１７９７３号公報 日本国特開２００４−３１６７９８号公報 In this type of bush-type vibration isolator, some main loads are input in a direction perpendicular to the axis. In that case, in order to obtain a soft spring characteristic with respect to the input load, the rubber elastic body is provided with hollow portions penetrating in the axial direction on both sides of the inner cylinder in the load input direction, and in the load input direction. The inner cylinder and the outer cylinder are elastically coupled by rubber elastic bodies on both sides of the inner cylinder that are orthogonal to each other. And in such a vibration isolator, in order to restrict | limit the excessive displacement in the said load input direction, a stopper rubber part may be provided in the said cavity part (for example, Japan Unexamined-Japanese-Patent No. 11-117973, Japanese Unexamined Patent Publication No. 2004-316798).
Japanese Laid-Open Patent Publication No. 11-117973 Japanese Unexamined Patent Publication No. 2004-316798

上記従来の防振装置において、ストッパゴム部が前記空洞部における外筒側から内筒側に向かって突出して設けられている場合、該ストッパゴム部の内筒側への当たり面は、通常、内筒の軸方向に対して平行に設けられており、即ち、ストッパゴム部の突出高さは軸方向において一定に設定されている。   In the conventional vibration isolator, when the stopper rubber portion is provided to protrude from the outer cylinder side toward the inner cylinder side in the hollow portion, the contact surface of the stopper rubber portion on the inner cylinder side is usually It is provided parallel to the axial direction of the inner cylinder, that is, the protruding height of the stopper rubber portion is set to be constant in the axial direction.

ところで、この種の防振装置においては、防振装置周りのスペース的な要請から、内筒側の支持部材と外筒側の支持部材とが軸方向においてオフセットして配される場合がある。その場合、主たる荷重が入力されたときに、外筒又は内筒の軸が他方の軸に対して傾くような変位、即ちこじれ方向への変位が起こる。このような場合に、上記のようにストッパゴム部の突出高さが軸方向において一定であると、過大な荷重が入力されたときに、こじれ方向への過大な変位を効果的に抑制することができず、耐久性を損なったり、また周辺部材と不所望に干渉して異音が生じるといった問題がある。   By the way, in this type of vibration isolator, the inner cylinder side support member and the outer cylinder side support member may be arranged offset in the axial direction because of space requirements around the vibration isolator. In that case, when a main load is input, a displacement in which the axis of the outer cylinder or the inner cylinder is inclined with respect to the other axis, that is, a displacement in a twisting direction occurs. In such a case, if the protruding height of the stopper rubber portion is constant in the axial direction as described above, excessive displacement in the twisting direction can be effectively suppressed when an excessive load is input. However, there is a problem that durability is deteriorated and abnormal noise is generated by undesirably interfering with peripheral members.

本発明は、このような点に鑑み、こじれ方向への過大変位を効果的に抑制することができるブッシュ型の防振装置を備えたリンク装置を提供することを目的とする。 In view of such a point, an object of the present invention is to provide a link device including a bush type vibration isolator that can effectively suppress an excessive displacement in a twisting direction.

本発明に係るリンク装置は、アーム部と、該アーム部の両端部に設けられた第１筒状部及び第２筒状部と、前記第１筒状部内に装着されたブッシュ型の第１防振装置と、前記第２筒状部内に装着されたブッシュ型の第２防振装置と、を備えてなるリンク装置において、前記第１筒状部と前記第２筒状部は、それぞれの軸に垂直な平面が互いに直交するよう設けられるとともに、第２筒状部の軸が第１筒状部の軸方向における中心に対してずれた位置に配され、前記第１防振装置は、内筒と、該内筒を軸平行に取り囲む外筒と、これら内筒と外筒の間に介設されて両者を結合するゴム弾性体とを備えてなり、前記ゴム弾性体は前記内筒を挟んでアーム部側と反アーム部側にそれぞれ軸方向に貫通する空洞部を有しており、前記反アーム部側の空洞部には前記外筒側から前記内筒側に向かって突出するストッパゴム部が設けられ、該ストッパゴム部は前記内筒側への当たり面が一面で形成され、該当たり面が前記内筒の軸方向において前記第２筒状部がずらされた側ほど突出高さが高くなるように傾斜して設けられたことを特徴とするものである。 The link device according to the present invention includes an arm portion, a first cylindrical portion and a second cylindrical portion provided at both ends of the arm portion, and a bush-type first mounted in the first cylindrical portion. In the link device comprising a vibration isolator and a bush-type second vibration isolator mounted in the second cylindrical portion, the first cylindrical portion and the second cylindrical portion are respectively Planes perpendicular to the axis are provided so as to be orthogonal to each other, and the axis of the second cylindrical part is arranged at a position shifted from the center in the axial direction of the first cylindrical part, and the first vibration isolator is An inner cylinder, an outer cylinder that surrounds the inner cylinder in an axially parallel manner, and a rubber elastic body that is interposed between the inner cylinder and the outer cylinder and that couples the two, and the rubber elastic body includes the inner cylinder It has a cavity that penetrates in the axial direction on the arm side and the counter-arm side across the empty the counter-arm side A stopper rubber portion projecting from the outer cylinder side toward the inner cylinder side is provided at the portion, and the stopper rubber portion is formed with a single contact surface to the inner cylinder side, and the corresponding surface is the inner cylinder is characterized in that Oite the second cylindrical portion in the axial direction is provided to be inclined so that high staggered side as protruding height.

このように構成したことで、上記ストッパゴム部の当たり面は、ストッパゴム部の突出高さが軸方向一端部から他端部にかけて漸次に低くなるように傾斜しており、即ち、ストッパゴム部は軸方向において一方側ほど突出高さが高く形成されている。そのため、第１筒状部と第２筒状部がオフセットして配置されたリンク装置において、ストッパゴム部の軸方向における突出高さの違いによって、過大な荷重が入力されたときにおける内外筒のこじれ方向への過大な変位を抑制することができる。 With this configuration, the contact surface of the stopper rubber portion is inclined so that the protruding height of the stopper rubber portion gradually decreases from one end portion in the axial direction to the other end portion, that is, the stopper rubber portion. Is formed such that the protruding height is higher on one side in the axial direction. Therefore, in the link device in which the first cylindrical portion and the second cylindrical portion are arranged offset , due to the difference in the protruding height in the axial direction of the stopper rubber portion, the inner and outer cylinders when an excessive load is input. Excessive displacement in the twisting direction can be suppressed.

本発明においては、上記リンク装置とは逆に内筒側から外筒側に向かって突出するストッパゴム部を設けて、該ストッパゴム部の当たり面に同様の傾斜形状を採用してもよい。すなわち、本発明は、また、アーム部と、該アーム部の両端部に設けられた第１筒状部及び第２筒状部と、前記第１筒状部内に装着されたブッシュ型の第１防振装置と、前記第２筒状部内に装着されたブッシュ型の第２防振装置と、を備えてなるリンク装置において、前記第１筒状部と前記第２筒状部は、それぞれの軸に垂直な平面が互いに直交するよう設けられるとともに、第２筒状部の軸が第１筒状部の軸方向における中心に対してずれた位置に配され、前記第１防振装置は、内筒と、該内筒を軸平行に取り囲む外筒と、これら内筒と外筒の間に介設されて両者を結合するゴム弾性体とを備えてなり、前記ゴム弾性体は前記内筒を挟んでアーム部側と反アーム部側にそれぞれ軸方向に貫通する空洞部を有しており、前記反アーム部側の空洞部には前記内筒側から前記外筒側に向かって突出するストッパゴム部が設けられ、該ストッパゴム部は前記外筒側への当たり面が一面で形成され、該当たり面が前記内筒の軸方向において前記第２筒状部がずらされた側ほど突出高さが高くなるように傾斜して設けられたことを特徴とするリンク装置を提供するものである。この場合も、上記と同様に、こじれ方向への過大変位を効果的に抑制することができる。 In the present invention, a stopper rubber portion that protrudes from the inner cylinder side toward the outer cylinder side may be provided on the contrary to the link device, and a similar inclined shape may be adopted for the contact surface of the stopper rubber portion. That is, the present invention also provides an arm portion, a first cylindrical portion and a second cylindrical portion provided at both ends of the arm portion, and a bush-type first mounted in the first cylindrical portion. In the link device comprising a vibration isolator and a bush-type second vibration isolator mounted in the second cylindrical portion, the first cylindrical portion and the second cylindrical portion are respectively Planes perpendicular to the axis are provided so as to be orthogonal to each other, and the axis of the second cylindrical part is arranged at a position shifted from the center in the axial direction of the first cylindrical part, and the first vibration isolator is An inner cylinder, an outer cylinder that surrounds the inner cylinder in an axially parallel manner, and a rubber elastic body that is interposed between the inner cylinder and the outer cylinder and that couples the two, and the rubber elastic body includes the inner cylinder It has a cavity that penetrates in the axial direction on the arm side and the counter-arm side across the empty the counter-arm side A stopper rubber portion projecting from the inner cylinder side toward the outer cylinder side is provided on the portion, and the stopper rubber portion is formed with a single contact surface to the outer cylinder side, and the corresponding surface is the inner cylinder. there is provided a linkage, characterized in that Oite the axial second cylindrical portion is provided to be inclined so that the higher the protrusion height side where the offset of. In this case, too, excessive displacement in the twisting direction can be effectively suppressed as described above.

本発明のリンク装置においては、前記ストッパゴム部に軸方向の小空洞を設けることができる。このような小空洞を設けると、ストッパゴム部による静バネ定数を維持したまま、動バネ定数を低減することができる。 In the link device of the present invention, the stopper rubber portion can be provided with a small axial cavity. When such a small cavity is provided, the dynamic spring constant can be reduced while maintaining the static spring constant by the stopper rubber portion.

本発明のリンク装置において、前記内筒は、一方の前記空洞部が設けられた側の厚みと他方の前記空洞部が設けられた側の厚みとが異なる非円形の断面形状の外形を持つものであってもよい。 In the link device of the present invention, the inner cylinder has an outer shape with a non-circular cross-sectional shape in which the thickness on the side where one of the hollow portions is provided is different from the thickness on the side where the other hollow portion is provided. It may be.

また、本発明のリンク装置においては、前記外筒と前記内筒の軸方向における中心が軸方向にずれた位置に配されるように前記外筒が前記内筒に対してオフセットして設けられてもよい。 In the link device of the present invention, the outer cylinder is provided offset from the inner cylinder so that the centers of the outer cylinder and the inner cylinder in the axial direction are arranged at positions shifted in the axial direction. May be.

更にまた、本発明のリンク装置においては、前記ゴム弾性体の軸方向における一方の側面に識別用凸部が設けられてもよい。これにより、軸方向において形状の異なるストッパゴム部を持つ防振装置を車両に組付ける際に装着方向を誤るといったことがなくなる。 Furthermore, in the link device of the present invention, an identification convex portion may be provided on one side surface in the axial direction of the rubber elastic body. This eliminates a mistake in the mounting direction when the vibration isolator having stopper rubber portions having different shapes in the axial direction is assembled to the vehicle.

本発明のリンク装置によれば、ストッパゴム部の当たり面に上記のように傾斜をつけたことにより、第１筒状部と第２筒状部がオフセットして配置されるにもかかわらず、内外筒のこじれ方向への過大な変位を抑制することができ、よって、耐久性の問題や、周辺部材と干渉による異音の問題を解消することができる。 According to the link device of the present invention, the first cylindrical portion and the second cylindrical portion are offset and arranged by inclining the contact surface of the stopper rubber portion as described above . Excessive displacement of the inner and outer cylinders in the twisting direction can be suppressed, so that the problem of durability and the problem of abnormal noise due to interference with peripheral members can be solved.

次に、本発明の実施形態に係る防振装置について図面を参照して説明する。   Next, a vibration isolator according to an embodiment of the present invention will be described with reference to the drawings.

図１は本発明の第１の実施形態に係る防振装置１０の側面図であり、図２〜４はその断面図である。防振装置１０は、金属製の内筒２６と、該内筒２６を同軸状に取り囲む外筒２８と、これら内筒２６と外筒２８の間に介在して両者を弾性的に結合するゴム弾性体３０とを備えてなる防振ブッシュである。   FIG. 1 is a side view of a vibration isolator 10 according to a first embodiment of the present invention, and FIGS. The vibration isolator 10 includes a metal inner cylinder 26, an outer cylinder 28 that coaxially surrounds the inner cylinder 26, and a rubber that is interposed between the inner cylinder 26 and the outer cylinder 28 to elastically couple them. An anti-vibration bush including an elastic body 30.

ゴム弾性体３０には、内筒２６を挟んだ両側に相対向してそれぞれ軸方向に貫通する空洞部３２，３４が設けられている。空洞部３２，３４はそれぞれ周方向に所要の幅を持っており、空洞部３２，３４間のゴム弾性体３０の両側部分３０ａ，３０ａが内筒２６を外筒２８に対して弾性的に支持するように設けられている。空洞部３２，３４は、それぞれ軸方向に対して直角の断面において周方向に内筒２６の外径よりも広幅とされている。   The rubber elastic body 30 is provided with cavities 32 and 34 penetrating oppositely on both sides of the inner cylinder 26 in the axial direction. The hollow portions 32 and 34 each have a required width in the circumferential direction, and both side portions 30 a and 30 a of the rubber elastic body 30 between the hollow portions 32 and 34 elastically support the inner cylinder 26 with respect to the outer cylinder 28. It is provided to do. The cavities 32 and 34 are each wider than the outer diameter of the inner cylinder 26 in the circumferential direction in a cross section perpendicular to the axial direction.

これら空洞部３２，３４には、外筒２８の内周面から半径方向内方に向けて突出するストッパゴム部３６，３８が設けられている。ストッパゴム部３６，３８は、軸直角方向における荷重入力に対して、相対向する内筒２６の外周面に当接することで、その過大変位を制限するものであり、内筒２６の外表面を覆うゴム層４０に当接する当たり面３６ａ，３８ａを備える。   The hollow portions 32 and 34 are provided with stopper rubber portions 36 and 38 that protrude radially inward from the inner peripheral surface of the outer cylinder 28. The stopper rubber portions 36 and 38 are configured to abut against the outer peripheral surface of the opposed inner cylinder 26 with respect to a load input in a direction perpendicular to the axis, thereby restricting excessive displacement thereof. The contact surface 36a, 38a which contacts the rubber layer 40 which covers is provided.

そして、本実施形態では、一方の空洞部３４に設けられたストッパゴム部３８において、その当たり面３８ａは、ストッパゴム部３８の突出高さが軸方向一端部から他端部にかけて漸次に低くなるように傾斜しており、即ち、ストッパゴム部３８は軸方向において一方側ほど突出高さが高く形成されている。これにより、ストッパゴム部３８は当たり面３８ａが一面で形成され、この当たり面３８ａが、図３に示す軸方向断面において、相対するゴム層４０と平行ではなく、従って内筒２６の軸方向２７と平行ではなく、これらに対して所定の傾斜を持つ面とされている。当たり面３８ａは、より詳細には、軸方向断面（図３参照）では直線状に傾斜し、軸方向に直交する断面（図１参照）では円弧状に湾曲した曲面状をなしている。   And in this embodiment, in the stopper rubber part 38 provided in one cavity part 34, the contact surface 38a becomes low gradually from the axial direction one end part to the other end part. That is, the stopper rubber portion 38 is formed so that the protruding height is higher toward one side in the axial direction. As a result, the stopper rubber portion 38 is formed with a single contact surface 38a, and this contact surface 38a is not parallel to the opposing rubber layer 40 in the axial section shown in FIG. Are not parallel to each other, but have a predetermined inclination with respect to them. More specifically, the contact surface 38a is linearly inclined in the axial cross section (see FIG. 3), and has a curved surface curved in an arc shape in the cross section orthogonal to the axial direction (see FIG. 1).

なお、もう一方の空洞部３２に設けられたストッパゴム部３６では、当たり面３６ａは、図３に示す軸方向断面において、内筒２６の軸方向２７と平行に形成されている。   In the stopper rubber portion 36 provided in the other cavity portion 32, the contact surface 36a is formed in parallel with the axial direction 27 of the inner cylinder 26 in the axial cross section shown in FIG.

図１，４に示されるように、ストッパゴム部３８には軸方向の小空洞（すぐり）６６が設けられている。小空洞６６は、ストッパゴム部３８を軸方向に貫通して設けられており、図１に示すように周方向に２つ並んで設けられている。なお、小空洞６６は、このような軸方向の貫通孔には限らず、非貫通の凹部であってもよい。   As shown in FIGS. 1 and 4, the stopper rubber portion 38 is provided with a small cavity (straight) 66 in the axial direction. The small cavities 66 are provided so as to penetrate the stopper rubber portion 38 in the axial direction, and are provided side by side in the circumferential direction as shown in FIG. The small cavity 66 is not limited to such an axial through hole, and may be a non-penetrating recess.

図１，３に示すように、内筒２６の外形は断面円形ではなく、上記一方の空洞部３４側での厚みｔ１が他方の空洞部３２側での厚みｔ２よりも小さくなるような異形の断面形状に形成されている。そして、これにより、主たる荷重入力方向における一方側と他方側での内筒２６と外筒２８との間隔をそれぞれ所定の寸法に設定している。   As shown in FIGS. 1 and 3, the outer shape of the inner cylinder 26 is not circular in cross-section, and is an irregular shape such that the thickness t1 on the one cavity 34 side is smaller than the thickness t2 on the other cavity 32 side. It is formed in a cross-sectional shape. And thereby, the space | interval of the inner cylinder 26 and the outer cylinder 28 in the one side and the other side in the main load input direction is each set to the predetermined dimension.

図２，３に示すように、内筒２６と外筒２８は、両者の軸方向中心がオフセットされて設けられている。すなわち、外筒２８の軸方向における中心７０が、内筒２６の軸方向における中心６４に一致しておらず、軸方向にずれた位置に配されている。詳細には、外筒２８の軸方向中心７０は、内筒２６の軸方向中心６４に対して、上記ストッパゴム部３８の突出高さが低い側にずらされている。   As shown in FIGS. 2 and 3, the inner cylinder 26 and the outer cylinder 28 are provided with their axial centers offset. That is, the center 70 in the axial direction of the outer cylinder 28 does not coincide with the center 64 in the axial direction of the inner cylinder 26, and is arranged at a position shifted in the axial direction. Specifically, the axial center 70 of the outer cylinder 28 is shifted to the side where the protruding height of the stopper rubber portion 38 is lower than the axial center 64 of the inner cylinder 26.

このように外筒２８を内筒２６に対してオフセットさせた防振装置１０では、車両に組み込む際に装着方向を間違うと性能を確保することができない。そのため、本実施形態では、図１，２に示すように、ゴム弾性体３０の軸方向における一方の側面に識別用凸部７２を設けている。識別用凸部７２は、ゴム弾性体３０の上記両側部分３０ａ，３０ａにおいて周方向に延びる湾曲線状に設けられており、防振装置１０の表裏を容易に識別できるようになっている。   As described above, in the vibration isolator 10 in which the outer cylinder 28 is offset with respect to the inner cylinder 26, performance cannot be ensured if the mounting direction is wrong when incorporated in the vehicle. Therefore, in the present embodiment, as shown in FIGS. 1 and 2, an identification convex portion 72 is provided on one side surface in the axial direction of the rubber elastic body 30. The identification convex portion 72 is provided in a curved line shape extending in the circumferential direction at the both side portions 30a, 30a of the rubber elastic body 30 so that the front and back of the vibration isolator 10 can be easily identified.

以上よりなる防振装置１０は、本実施形態では、図５に示すリンク装置１８に組み込まれて自動車に搭載される。このリンク装置１８は、自動車のエンジンのロール方向の動きを抑制するためのトルク支持用の連結ロッド（トルクロッド）であり、エンジン１の下部後端部とその後方の車体２との間を連結するものである。   In the present embodiment, the vibration isolator 10 having the above configuration is incorporated in the link device 18 shown in FIG. The link device 18 is a connecting rod for torque support (torque rod) for suppressing the movement of the automobile engine in the roll direction, and connects the lower rear end portion of the engine 1 and the vehicle body 2 behind it. To do.

リンク装置１８は、車両の前後方向に延びるアーム部１２と、その後端部に設けられて車体２に連結される第１筒状部１４と、アーム部１２の前端部に設けられてエンジン１に連結される第２筒状部１６とを備え、第１筒状部１４内に上記防振装置１０が装着され、第２筒状部１６内に他のブッシュ型の防振装置２０が装着されてなる。   The link device 18 includes an arm portion 12 that extends in the front-rear direction of the vehicle, a first cylindrical portion 14 that is provided at the rear end portion thereof and connected to the vehicle body 2, and a front end portion of the arm portion 12 that is provided at the engine 1. A second cylindrical portion 16 to be connected, the vibration isolator 10 is mounted in the first cylindrical portion 14, and another bush type vibration isolator 20 is mounted in the second cylindrical portion 16. It becomes.

第１筒状部１４は、その軸２２を車両上下方向に向けて設けられ、第２筒状部１６は、その軸２４を車両幅方向に向けて設けられている。これにより、第１筒状部１４と第２筒状部１６は、それぞれの軸２２，２４に垂直な平面が互いに直交するよう設けられており（即ち、軸２２に垂直な平面である水平面と、軸２４に垂直な平面である鉛直面（紙面）とは直交している。）、エンジン１のロール方向の動きや振動を効果的に抑制することができるようになっている。   The first cylindrical portion 14 is provided with its shaft 22 facing the vehicle vertical direction, and the second cylindrical portion 16 is provided with its shaft 24 facing the vehicle width direction. Accordingly, the first cylindrical portion 14 and the second cylindrical portion 16 are provided so that the planes perpendicular to the respective axes 22 and 24 are orthogonal to each other (that is, the horizontal plane that is a plane perpendicular to the axis 22 and , And perpendicular to the vertical plane (paper plane) which is a plane perpendicular to the shaft 24.) The movement and vibration of the engine 1 in the roll direction can be effectively suppressed.

上記防振装置１０は、第１筒状部１４の内周面に外筒２８が嵌合されるように装着される。防振装置１０は、図１に示す状態から絞り加工により縮径された後、図６に示されるように第１筒状部１４に圧入される。その際、上記２つの空洞部３２，３４が、内筒２６を挟んで前後に、即ちアーム部１２側と反アーム部側（アーム部と反対側）に相対向して配されるように装着され、より詳細には、空洞部３２がアーム部１２側に、空洞部３４が反アーム部側にそれぞれ配されるように装着され、これにより、アーム部１２の長手方向に沿って主たる荷重が入力されたときにストッパゴム部３６，３８が機能するようになっている。また、この防振装置１０は、図５に示すように、ストッパゴム部３８の突出高さが下方ほど高くなるように第１筒状部１４内に装着される。   The vibration isolator 10 is mounted so that the outer cylinder 28 is fitted to the inner peripheral surface of the first cylindrical portion 14. The vibration isolator 10 is reduced in diameter by drawing from the state shown in FIG. 1 and then press-fitted into the first tubular portion 14 as shown in FIG. At this time, the two cavities 32 and 34 are mounted so as to be arranged in front of and behind the inner cylinder 26, that is, opposite to each other on the side of the arm 12 and the side opposite to the arm (on the side opposite to the arm). More specifically, the cavity portion 32 is mounted on the arm portion 12 side, and the cavity portion 34 is mounted on the non-arm portion side, so that a main load is applied along the longitudinal direction of the arm portion 12. The stopper rubber portions 36 and 38 function when input. Further, as shown in FIG. 5, the vibration isolator 10 is mounted in the first tubular portion 14 so that the protruding height of the stopper rubber portion 38 increases toward the lower side.

図５，７に示すように、第１筒状部１４には、下端部における反アーム部側の周方向部分が切り欠かれることで切欠部６８が設けられている。この切欠部６８は、第１筒状部１４の半円周分にわたって設けられている。そして、このように切欠部６８を設けたことにより、その内側に嵌着される防振装置１０において、外筒２８は切欠量に相当する軸方向寸法だけ下端側が短く形成されている。そのため、上記したように内筒２６と外筒２８との軸方向中心がオフセットされるように両筒２６，２８が形成されており、即ち、外筒２８の軸方向における中心７０が、内筒２６の軸方向における中心６４（第１筒状部１４の軸方向における中心と同じ）に対して上方にずれている。   As shown in FIGS. 5 and 7, the first cylindrical portion 14 is provided with a notch portion 68 by notching a circumferential portion on the side opposite to the arm portion at the lower end portion. The notch 68 is provided over the semicircular circumference of the first tubular portion 14. And by providing the notch part 68 in this way, in the vibration isolator 10 fitted inside, the outer cylinder 28 is formed short at the lower end side by an axial dimension corresponding to the notch amount. Therefore, as described above, both the cylinders 26 and 28 are formed so that the axial centers of the inner cylinder 26 and the outer cylinder 28 are offset. That is, the center 70 in the axial direction of the outer cylinder 28 is the inner cylinder. 26 is shifted upward with respect to the center 64 in the axial direction (the same as the center in the axial direction of the first cylindrical portion 14).

一方、第２筒状部１６内に装着される小径側の防振装置２０は、図８に示すように、第２筒状部１６と同軸に配された内筒４２と、該内筒４２を取り囲み第２筒状部１６の内周面に嵌合された外筒４４と、これら内筒４２と外筒４４との間に介在して両者を弾性的に結合するゴム弾性体４６とを備えてなる。   On the other hand, as shown in FIG. 8, the vibration isolator 20 on the small diameter side mounted in the second cylindrical portion 16 includes an inner cylinder 42 arranged coaxially with the second cylindrical portion 16, and the inner cylinder 42. And an outer cylinder 44 fitted to the inner peripheral surface of the second cylindrical portion 16 and a rubber elastic body 46 interposed between the inner cylinder 42 and the outer cylinder 44 to elastically couple them together. Prepare.

図６，７に示すように、アーム部１２は、後端部１２ａが第１筒状部１４の外周面に固着されている。一方、アーム部１２の前端部には、第２筒状部１６内に装着された防振装置２０の内筒４２の軸方向両端面を挟持する一対の支持腕４８，４８が設けられている。一対の支持腕４８，４８の前端部には、それぞれ車両幅方向の貫通孔５０，５０が設けられており、これら貫通孔５０，５０とその間に配された内筒４２の内側に不図示のボルトを挿通させてナット５２で締め付けることにより、第１筒状部１４と第２筒状部１６がアーム部１２を介して連設される。   As shown in FIGS. 6 and 7, the arm portion 12 has a rear end portion 12 a fixed to the outer peripheral surface of the first tubular portion 14. On the other hand, a pair of support arms 48 and 48 are provided at the front end portion of the arm portion 12 so as to sandwich both axial end surfaces of the inner cylinder 42 of the vibration isolator 20 mounted in the second cylindrical portion 16. . At the front end portions of the pair of support arms 48, 48, through holes 50, 50 in the vehicle width direction are provided, respectively, and these through holes 50, 50 and the inner cylinder 42 disposed between them are not shown. By inserting the bolt and tightening with the nut 52, the first tubular portion 14 and the second tubular portion 16 are connected via the arm portion 12.

図９に示すように、第２筒状部１６の外周面には、エンジン１への取付用のブラケット５４が固着されている。ブラケット５４は、エンジン１の後面に締結するための上方に延びる第１固定部５６と、エンジン１の下端部側面に締結するための前方に延びる第２固定部５８とを備え、図５に示すように、これらの固定部５６，５８がボルト６０を用いてエンジン１に固定されている。一方、車体２側については、車体２の取付凹部３内にて、第１筒状部１４に装着された防振装置１０の内筒２６が、その内部に挿通されたボルト６２を用いて車体２に固定されている。   As shown in FIG. 9, a bracket 54 for attachment to the engine 1 is fixed to the outer peripheral surface of the second cylindrical portion 16. The bracket 54 includes a first fixing portion 56 that extends upward for fastening to the rear surface of the engine 1, and a second fixing portion 58 that extends forward for fastening to the side surface of the lower end portion of the engine 1, as shown in FIG. 5. As described above, these fixing portions 56 and 58 are fixed to the engine 1 by using bolts 60. On the other hand, on the vehicle body 2 side, the inner cylinder 26 of the vibration isolator 10 attached to the first cylindrical portion 14 is mounted in the mounting recess 3 of the vehicle body 2 using a bolt 62 inserted therein. 2 is fixed.

そして、図５に示すように、第２筒状部１６の軸２４が、第１筒状部１４の軸方向における中心６４（即ち、第１筒状部１４を軸方向に二等分する点）に対して、同一水平面上ではなく、これよりも下方にずれた位置に配されており、即ち、第２筒状部１６は第１筒状部１４の軸方向における中心面から当該軸方向にオフセットさせて配置されている。   And as shown in FIG. 5, the axis | shaft 24 of the 2nd cylindrical part 16 is the center 64 in the axial direction of the 1st cylindrical part 14 (namely, the point which bisects the 1st cylindrical part 14 to an axial direction). ) Is not on the same horizontal plane, but is arranged at a position shifted downward from this, that is, the second cylindrical portion 16 is axially distant from the central plane in the axial direction of the first cylindrical portion 14. It is arranged offset.

このように第１筒状部１４と第２筒状部１６をオフセットして配置した場合、図５に示すように、エンジン１のロール方向の振動により、第２筒状部１６に矢印Ｘで示すように車両前方に引っ張る力が作用したとき、第１筒状部１４には矢印Ｙで示すように反アーム部側が下方にお辞儀をするようにこじれ方向（回転方向）に変位しようとする力が働く。かかるこじれ方向への変位は、軸方向の小空洞６６が潰れない程度の力が作用している領域内であればそれほど問題にはならないが、該小空洞６６が潰れ更なる力が作用するような圧縮限界領域では、突如としてこじれ方向への変位が大きくなって第１筒状部１４が車体２の底板４に干渉するという不具合が生じる。   When the first cylindrical portion 14 and the second cylindrical portion 16 are offset and arranged in this way, as shown in FIG. 5, the arrow in the second cylindrical portion 16 is caused by vibration in the roll direction of the engine 1. As shown, when a pulling force is applied to the front of the vehicle, the first cylindrical portion 14 is forced to displace in the twisting direction (rotating direction) so that the side opposite the arm bows downward as indicated by an arrow Y. Work. Such a displacement in the twisting direction is not so much a problem as long as it is in a region where a force that does not collapse the small cavity 66 in the axial direction is applied, but it seems that the small cavity 66 is collapsed and a further force is applied. In such a compression limit region, there is a problem that the displacement in the twisting direction suddenly increases and the first cylindrical portion 14 interferes with the bottom plate 4 of the vehicle body 2.

これに対し、本実施形態の防振装置１０であると、ストッパゴム部３８の当たり面３８ａを傾斜させているので、ストッパゴム部３８の圧縮時に、軸方向下方側でのゴム量が多いために、矢印Ｙで示すこじれ方向に変位しにくく、圧縮限界領域でのこじれ変位を抑えることができる。また、こじれ方向に変位した場合にも、第１筒状部１４の反アーム部側の下端部に切欠部６８を設けたので、第１筒状部１４が車体２の底板４に干渉することを確実に防止することができる。   On the other hand, in the vibration isolator 10 of the present embodiment, the contact surface 38a of the stopper rubber portion 38 is inclined, so that the amount of rubber on the lower side in the axial direction is large when the stopper rubber portion 38 is compressed. In addition, it is difficult to displace in the twisting direction indicated by the arrow Y, and the twisting displacement in the compression limit region can be suppressed. Further, even when displaced in the twisting direction, the notch 68 is provided at the lower end of the first tubular portion 14 on the side opposite to the arm portion, so that the first tubular portion 14 interferes with the bottom plate 4 of the vehicle body 2. Can be reliably prevented.

また、本実施形態の防振装置１０であると、ストッパゴム部３８に小空洞６６を設けたことにより、ストッパゴム部３８による静バネ定数を維持したまま、動バネ定数を低減することができ、乗り心地性を向上することができる。   Further, in the vibration isolator 10 of the present embodiment, the small spring 66 is provided in the stopper rubber part 38, so that the dynamic spring constant can be reduced while maintaining the static spring constant by the stopper rubber part 38. Riding comfort can be improved.

また、内筒２６と外筒２８とをオフセットさせたことにより、ゴム弾性体３０の軸方向寸法を確保することができる。上記のように外筒２８が嵌入される第１筒状部１４に切欠部６８を設けた場合に、内筒２６と外筒２８とをオフセットさせないとすると、外筒２８の上端側も短くする必要があり、その場合、外筒２８の軸方向寸法が短くなって、ゴム弾性体３０の軸方向寸法を十分に確保することが難しくなるが、このようにオフセットさせれば、外筒２８の上端側での軸方向寸法を確保して、その分ゴム弾性体３０の軸方向寸法を確保することができる。   Moreover, the axial dimension of the rubber elastic body 30 can be ensured by offsetting the inner cylinder 26 and the outer cylinder 28. When the notch 68 is provided in the first cylindrical portion 14 into which the outer cylinder 28 is inserted as described above, if the inner cylinder 26 and the outer cylinder 28 are not offset, the upper end side of the outer cylinder 28 is also shortened. In such a case, the axial dimension of the outer cylinder 28 is shortened, and it is difficult to sufficiently secure the axial dimension of the rubber elastic body 30. The axial dimension on the upper end side can be secured, and the axial dimension of the rubber elastic body 30 can be secured accordingly.

図１０は、第２の実施形態に係る防振装置１０ａを示したものである。この実施形態では、反アーム部側の空洞部３４において、内筒２６の外周面から半径方向外方に向けて突出するストッパゴム部７４を設けた点が上記第１の実施形態とは異なる。このストッパゴム部７４は、アーム部１２の長手方向に沿う方向の入力に対して、相対向する外筒２８側のストッパ受けゴム部７６に当接することで、外筒２６の過大変位を制限するものであり、ストッパ受けゴム部７６に当接する当たり面７４ａを備える。   FIG. 10 shows a vibration isolator 10a according to the second embodiment. This embodiment is different from the first embodiment in that a stopper rubber portion 74 that protrudes radially outward from the outer peripheral surface of the inner cylinder 26 is provided in the cavity portion 34 on the side opposite to the arm portion. This stopper rubber part 74 limits the excessive displacement of the outer cylinder 26 by abutting against the stopper receiving rubber part 76 on the opposite outer cylinder 28 side with respect to the input in the direction along the longitudinal direction of the arm part 12. The contact surface 74a which contacts the stopper receiving rubber portion 76 is provided.

このストッパゴム部７４は、下方ほど突出高さが高くなるように上記当たり面７４ａが内筒２６の軸方向２７に対して傾斜して設けられている。すなわち、ストッパゴム部７４は、当たり面７４ａが一面で形成されており、この当たり面７４ａが相対する外筒側のストッパ受けゴム部７６の面と平行ではなく、下方ほどストッパ受けゴム部７６に接近するように傾斜している。   The stopper rubber portion 74 is provided with the contact surface 74a inclined with respect to the axial direction 27 of the inner cylinder 26 so that the protruding height increases toward the lower side. That is, the stopper rubber portion 74 has a contact surface 74a formed as a single surface, and the contact surface 74a is not parallel to the surface of the stopper receiving rubber portion 76 on the opposite outer cylinder side, and the stopper rubber portion 74 is closer to the stopper receiving rubber portion 76 toward the lower side. Inclined to approach.

このように傾斜させたことにより、第１の実施形態と同様、ストッパゴム部７４の圧縮時に、軸方向下方側でのゴム量が多いために、こじれ方向に変位しにくく、圧縮限界領域でのこじれ変位を抑えることができる。   By inclining in this way, as in the first embodiment, when the stopper rubber portion 74 is compressed, the amount of rubber on the lower side in the axial direction is large, so that it is difficult to displace in the twisting direction, and in the compression limit region. Twist displacement can be suppressed.

図１０では、ストッパゴム部７４に軸方向の小空洞を示していないが、第１の実施形態と同様に小空洞を設けることができる。また、第２の実施形態に関し、その他の構成は第１の実施形態と同様であり、従って同様の作用効果が奏される。   In FIG. 10, the stopper rubber portion 74 does not show a small cavity in the axial direction, but a small cavity can be provided as in the first embodiment. Moreover, regarding the second embodiment, the other configurations are the same as those of the first embodiment, and thus the same operational effects are exhibited.

上記した各実施形態では、一対の空洞部３２，３４のうち、一方側の空洞部３４のストッパゴム部３８，７４のみについて、上記当たり面３８ａ，７４ａの傾斜構成を採用したが、必要に応じ、もう一方の空洞部にも同様の傾斜した当たり面を設けることもできる。   In each of the above-described embodiments, the inclined configuration of the contact surfaces 38a and 74a is adopted only for the stopper rubber portions 38 and 74 of the cavity portion 34 on one side of the pair of cavity portions 32 and 34. A similar inclined contact surface can also be provided in the other cavity.

産業上の実施可能性Industrial feasibility

本発明のリンク装置であると、内外筒のこじれ方向への過大な変位を抑制することができるので、自動車用エンジンを車体に搭載し支持する場合のトルク支持用のトルクロッドとして、あるいはまた自動車用サスペンションのリンク装置として好適に使用することができる。 When a link apparatus of the present invention, it is possible to suppress excessive displacement in the torsion direction of the inner and outer cylinders, and a torque rod for torque support when mounting supporting the automobile engine to the vehicle body, or the Ru can be suitably used as a link apparatus for an automobile suspension.

本発明の第１の実施形態に係る防振装置の側面図である。It is a side view of the vibration isolator which concerns on the 1st Embodiment of this invention. 図１のII−II線の断面図である。It is sectional drawing of the II-II line | wire of FIG. 図１のIII−III線の断面図である。It is sectional drawing of the III-III line | wire of FIG. 図１のIV−IV線の断面図である。It is sectional drawing of the IV-IV line of FIG. 上記防振装置を組み込んだリンク装置の断面図である。It is sectional drawing of the link apparatus incorporating the said vibration isolator. 同上のリンク装置における第１筒状部及びアーム部の平面図である。It is a top view of the 1st cylindrical part and arm part in a link apparatus same as the above. 同上の第１筒状部及びアーム部の側面図である。It is a side view of a 1st cylindrical part and arm part same as the above. 同上のリンク装置における第２筒状部側の防振装置の断面図である。It is sectional drawing of the vibration isolator by the 2nd cylindrical part side in a link apparatus same as the above. 同上の第２筒状部及びブラケットの側面図である。It is a side view of the 2nd cylindrical part same as the above and a bracket. 第２の実施形態に係る防振装置の断面図である。It is sectional drawing of the vibration isolator which concerns on 2nd Embodiment.

符号の説明Explanation of symbols

１０…防振装置、２６…内筒、２７…内筒の軸方向、２８…外筒、３０…ゴム弾性体、３２，３４…空洞部、３６，３８…ストッパゴム部、３８ａ…当たり面、６４…内筒の軸方向中心、６６…小空洞、７０…外筒の軸方向中心、７２…識別用凸部、７４…ストッパゴム部、７４ａ…当たり面、ｔ１…内筒の一方の空洞部３４側での厚み、ｔ２…内筒の他方の空洞部３２側での厚み DESCRIPTION OF SYMBOLS 10 ... Vibration isolator, 26 ... Inner cylinder, 27 ... Axial direction of inner cylinder, 28 ... Outer cylinder, 30 ... Rubber elastic body, 32, 34 ... Hollow part, 36, 38 ... Stopper rubber part, 38a ... Contact surface, 64: axial center of the inner cylinder, 66: small cavity, 70: axial center of the outer cylinder, 72: convex part for identification, 74: stopper rubber part, 74a ... contact surface, t1: one cavity part of the inner cylinder 34 side thickness, t2... Thickness on the other cavity 32 side of the inner cylinder

Claims (5)

アーム部と、該アーム部の両端部に設けられた第１筒状部及び第２筒状部と、前記第１筒状部内に装着されたブッシュ型の第１防振装置と、前記第２筒状部内に装着されたブッシュ型の第２防振装置と、を備えてなるリンク装置において、
前記第１筒状部と前記第２筒状部は、それぞれの軸に垂直な平面が互いに直交するよう設けられるとともに、第２筒状部の軸が第１筒状部の軸方向における中心に対してずれた位置に配され、
前記第１防振装置は、内筒と、該内筒を軸平行に取り囲む外筒と、これら内筒と外筒の間に介設されて両者を結合するゴム弾性体とを備えてなり、前記ゴム弾性体は前記内筒を挟んでアーム部側と反アーム部側にそれぞれ軸方向に貫通する空洞部を有しており、前記反アーム部側の空洞部には前記外筒側から前記内筒側に向かって突出するストッパゴム部が設けられ、該ストッパゴム部は前記内筒側への当たり面が一面で形成され、該当たり面が前記内筒の軸方向において前記第２筒状部がずらされた側ほど突出高さが高くなるように傾斜して設けられたことを特徴とするリンク装置。 An arm portion, first and second cylindrical portions provided at both ends of the arm portion, a bush-type first vibration isolator mounted in the first cylindrical portion, and the second A bush type second vibration isolator mounted in the cylindrical portion, and a link device comprising:
The first cylindrical portion and the second cylindrical portion are provided so that planes perpendicular to the respective axes are orthogonal to each other, and the axis of the second cylindrical portion is centered in the axial direction of the first cylindrical portion. It is arranged at a position shifted from
The first vibration isolator includes an inner cylinder, an outer cylinder that surrounds the inner cylinder in an axially parallel manner, and a rubber elastic body that is interposed between the inner cylinder and the outer cylinder to couple them together. The rubber elastic body has a hollow portion penetrating in the axial direction on each of the arm portion side and the non-arm portion side across the inner tube, and the hollow portion on the anti-arm portion side has the cavity portion from the outer tube side. stopper rubber portion is provided projecting toward the inner cylinder side, said stopper rubber portion is surface contact to the inner cylinder side is formed in one side, Oite relevant or surfaces in the axial direction of the inner cylinder and the second A link device characterized by being provided so as to be inclined so that a protruding height becomes higher toward a side where the cylindrical portion is shifted . アーム部と、該アーム部の両端部に設けられた第１筒状部及び第２筒状部と、前記第１筒状部内に装着されたブッシュ型の第１防振装置と、前記第２筒状部内に装着されたブッシュ型の第２防振装置と、を備えてなるリンク装置において、
前記第１筒状部と前記第２筒状部は、それぞれの軸に垂直な平面が互いに直交するよう設けられるとともに、第２筒状部の軸が第１筒状部の軸方向における中心に対してずれた位置に配され、
前記第１防振装置は、内筒と、該内筒を軸平行に取り囲む外筒と、これら内筒と外筒の間に介設されて両者を結合するゴム弾性体とを備えてなり、前記ゴム弾性体は前記内筒を挟んでアーム部側と反アーム部側にそれぞれ軸方向に貫通する空洞部を有しており、前記反アーム部側の空洞部には前記内筒側から前記外筒側に向かって突出するストッパゴム部が設けられ、該ストッパゴム部は前記外筒側への当たり面が一面で形成され、該当たり面が前記内筒の軸方向において前記第２筒状部がずらされた側ほど突出高さが高くなるように傾斜して設けられたことを特徴とするリンク装置。 An arm portion, first and second cylindrical portions provided at both ends of the arm portion, a bush-type first vibration isolator mounted in the first cylindrical portion, and the second A bush type second vibration isolator mounted in the cylindrical portion, and a link device comprising:
The first cylindrical portion and the second cylindrical portion are provided so that planes perpendicular to the respective axes are orthogonal to each other, and the axis of the second cylindrical portion is centered in the axial direction of the first cylindrical portion. It is arranged at a position shifted from
The first vibration isolator includes an inner cylinder, an outer cylinder that surrounds the inner cylinder in an axially parallel manner, and a rubber elastic body that is interposed between the inner cylinder and the outer cylinder to couple them together. The rubber elastic body has a hollow portion penetrating in the axial direction on each of the arm portion side and the non-arm portion side across the inner tube, and the hollow portion on the anti-arm portion side includes the hollow portion from the inner tube side. stopper rubber portion is provided projecting toward the outer cylinder side, said stopper rubber portion is surface contact to the outer tube side is formed in one side, Oite relevant or surfaces in the axial direction of the inner cylinder and the second A link device characterized by being provided so as to be inclined so that a protruding height becomes higher toward a side where the cylindrical portion is shifted . 前記内筒は、一方の前記空洞部が設けられた側の厚みと他方の前記空洞部が設けられた側の厚みとが異なる非円形の断面形状の外形を持つ請求項１又は２記載のリンク装置。The link according to claim 1 or 2, wherein the inner cylinder has a non-circular cross-sectional outer shape in which a thickness on a side where one of the hollow portions is provided is different from a thickness on the side where the other hollow portion is provided. apparatus. 前記外筒と前記内筒の軸方向における中心が軸方向にずれた位置に配されるように前記外筒が前記内筒に対してオフセットして設けられたことを特徴とする請求項１又は２記載のリンク装置。The outer cylinder is provided offset from the inner cylinder so that the centers of the outer cylinder and the inner cylinder in the axial direction are arranged at positions shifted in the axial direction. 2. The link device according to 2. 前記ゴム弾性体の軸方向における一方の側面に識別用凸部が設けられたことを特徴とする請求項１又は２記載のリンク装置。The link device according to claim 1, wherein an identification convex portion is provided on one side surface in the axial direction of the rubber elastic body.
JP2006553776A 2005-01-18 2005-01-18 Link device Active JP4283853B2 (en)

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JP4833946B2 (en) * 2007-09-14 2011-12-07 東洋ゴム工業株式会社 Anti-vibration bush
JP5615677B2 (en) * 2010-11-24 2014-10-29 東洋ゴム工業株式会社 Anti-vibration connecting rod
JP6768395B2 (en) * 2016-08-01 2020-10-14 住友理工株式会社 Cylindrical anti-vibration device
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JPH0966720A (en) * 1995-08-30 1997-03-11 Toyota Motor Corp Vehicle suspension device
JPH09112632A (en) * 1995-10-20 1997-05-02 Mazda Motor Corp Mount device of power plant for vehicle
JP2001090762A (en) * 1999-09-22 2001-04-03 Nissan Motor Co Ltd Insulator structure for suspension
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