JP2007309492A - Vibration prevention device - Google Patents

Vibration prevention device Download PDF

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JP2007309492A
JP2007309492A JP2006141866A JP2006141866A JP2007309492A JP 2007309492 A JP2007309492 A JP 2007309492A JP 2006141866 A JP2006141866 A JP 2006141866A JP 2006141866 A JP2006141866 A JP 2006141866A JP 2007309492 A JP2007309492 A JP 2007309492A
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inner cylinder
press
vibration
vibration isolator
stopper rubber
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JP4199262B2 (en
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Wataru Miura
渉 三浦
Yoshitaka Ishimoto
善隆 石本
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Toyo Tire Corp
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Toyo Tire and Rubber Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration prevention device by which adequate press-fit and assembling can be performed in a normal position of a fitting hole on the side of a vibration body. <P>SOLUTION: In the vibration prevention device, an outer casing 12 is press-fit in the fitting hole 4A. A flange 18 is provided radially outwardly at the lower end of the outer casing 12. A stopper rubber-part 20 is provided radially-outwardly protrusively at an end-face 18A of the outer casing 12 provided with the flange 18. An annular to-be-pressed face 24 is provided at the outside periphery of the stopper rubber-part 20. The outer casing 12 can be press-fitted in the fitting hole 4A by pressing the to-be-pressed face 24 by using a press-fit fixture 100. The stopper rubber-part 20 is partly radially outwardly protruded at a specified position in the peripheral direction of the to-be-pressed face 24 so as to provide a positioning protrusion 28 for the press-fit fixture 100. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、内筒と、これを取り囲む外筒と、これら内筒と外筒との間に介設されて両筒を結合するゴム弾性体からなる防振基体とを備えた筒形の防振装置に関する。   The present invention relates to a cylindrical anti-vibration comprising an inner cylinder, an outer cylinder surrounding the inner cylinder, and a vibration-proof base made of a rubber elastic body that is interposed between the inner cylinder and the outer cylinder and connects the two cylinders. The present invention relates to a vibration device.

従来、この種の防振装置としては、自動車のボディと足回り部材との間に介設されるボディマウントがある。該ボディマウントは、内筒が軸方向を上下方向にしてフレーム等のボディ側部材に取り付けられ、外筒がサスペンションのメンバー部材等の振動体側に形成された嵌合穴に圧入内嵌により固定して用いられるものであり、種々の構造のものが提案されている（例えば、下記特許文献１参照）。
特開２００６−６４０７３号公報 Conventionally, as this type of vibration isolator, there is a body mount interposed between an automobile body and an underbody member. In the body mount, the inner cylinder is attached to a body side member such as a frame with the axial direction set up and down, and the outer cylinder is fixed to a fitting hole formed on the vibration member side such as a suspension member member by press-fitting inner fitting. Various types of structures have been proposed (for example, see Patent Document 1 below).
JP 2006-64073 A

ところで、かかるボディマウントは、一般に、一台の自動車において、類似した形状のものが複数種組み付けられることが多い。その一方で、自動車メーカーにおける車両の組み立てスピードは高速化の傾向にある。そのため、ボディマウントの種類を誤って他の箇所に組み付けたり、組み付け方向を誤ったりすることがあり、問題となる。   By the way, in general, a plurality of types of body mounts having similar shapes are often assembled in one automobile. On the other hand, vehicle assembly speeds at automakers tend to increase. For this reason, the type of body mount may be mistakenly assembled at another location, or the assembly direction may be wrong, which causes a problem.

本発明は、かかる問題点を解消して、正規位置に確実に組み付けることができる防振装置を提供することを目的とする。   An object of the present invention is to provide an anti-vibration device that can solve such problems and can be reliably assembled at a normal position.

本発明に係る防振装置は、ボディ側部材に取り付けられる内筒と、該内筒を取り囲むものであって振動体側に形成された嵌合穴に圧入内嵌する外筒と、前記内筒と外筒との間に介設されて両筒を結合するゴム弾性体からなる防振基体とを備えた防振装置であって、前記外筒の一端部に径方向外方に延びるフランジが設けられ、該フランジが設けられた前記外筒の端面には、軸方向外方に突出するストッパゴム部が設けられるとともに、該ストッパゴム部の外周に前記嵌合穴への圧入時において圧入治具により軸方向に押圧される環状の被押圧面部が設けられ、該被押圧面部の周方向における一又は複数箇所に前記ストッパゴム部の一部を径方向外方に突出させることで前記圧入治具に対する位置決め用凸部が設けられたものである。   An antivibration device according to the present invention includes an inner cylinder attached to a body side member, an outer cylinder surrounding the inner cylinder and press-fitted into a fitting hole formed on the vibrating body side, and the inner cylinder An anti-vibration device comprising an anti-vibration base made of a rubber elastic body interposed between the outer cylinders and connecting the two cylinders, wherein a flange extending radially outward is provided at one end of the outer cylinder A stopper rubber portion protruding outward in the axial direction is provided on the end surface of the outer cylinder provided with the flange, and a press-fitting jig is used when the outer periphery of the stopper rubber portion is press-fitted into the fitting hole. An annular pressed surface portion that is pressed in the axial direction is provided, and the press-fitting jig is configured such that a part of the stopper rubber portion protrudes radially outward at one or a plurality of locations in the circumferential direction of the pressed surface portion. Are provided with positioning convex portions.

このような構成を持つ防振装置においては、振動体側の嵌合穴への圧入作業は、ストッパゴム部外周の被押圧面部を圧入治具により軸方向に押圧することにより行う。その際、被押圧面部の所定箇所に圧入治具に対する位置決め用凸部が設けられているので、該位置決め用凸部が圧入治具の凹部と嵌合しないと圧入作業を行うことができず、そのため、誤品を組み付ける不具合が解消される。また、該位置決め用凸部により防振装置の周方向における位置決めもなされるので、組み付け方向を誤るという不具合も解消される。   In the vibration isolator having such a configuration, the press-fitting operation into the fitting hole on the vibrating body side is performed by pressing the pressed surface portion on the outer periphery of the stopper rubber portion in the axial direction with a press-fitting jig. At that time, since the positioning convex portion for the press-fitting jig is provided at a predetermined position of the pressed surface portion, the press-fitting operation cannot be performed unless the positioning convex portion is fitted to the concave portion of the press-fitting jig, This eliminates the problem of assembling wrong products. Further, since the positioning projections also position the vibration isolator in the circumferential direction, the problem of incorrect assembly direction can be eliminated.

本発明の防振装置において、前記位置決め用凸部が前記内筒を挟んで径方向に相対させて設けられ、該相対する位置決め用凸部が互いに異なる形状に形成されていると、誤組み付けをより確実に防止することができる。   In the vibration isolator of the present invention, if the positioning convex portions are provided to be opposed to each other in the radial direction across the inner cylinder, and the opposing positioning convex portions are formed in different shapes, incorrect assembly is performed. It can prevent more reliably.

また、前記ストッパゴム部の周方向における一箇所に目視可能な識別マークが付されていると、防振装置の識別が容易である。   Further, if a visible identification mark is attached to one place in the circumferential direction of the stopper rubber portion, the vibration isolator can be easily identified.

また、前記内筒を挟んで径方向に相対する前記フランジの周方向における二箇所に、径方向外方に突出する識別突起が、前記ストッパゴム部から連なるゴムにより設けられていると、嵌合穴への圧入作業時に周方向における組み付け方向が目視でも容易に確認することができる。   Further, when two identification protrusions projecting radially outward are provided at two locations in the circumferential direction of the flange opposite to each other in the radial direction across the inner cylinder, the rubber is connected to the stopper rubber portion. At the time of press-fitting work into the hole, the assembly direction in the circumferential direction can be easily confirmed visually.

また、上記防振装置においては、前記内筒の一端部に前記ボディ側部材との間で挟まれた状態に前記ボディ側部材に当接する当接部材が取り付けられ、該当接部材の前記ボディ側部材に当接する側の面が、前記内筒の一端部の端面よりも外周形状が大に設定され、前記当接部材は、前記内筒の一端部の外周に嵌合する環状壁を備えて、該環状壁により前記内筒の一端部に外嵌されてもよい。この場合、内筒の一端部に取り付けた当接部材によりボディ側部材に対する当接面が大きく確保されるので、車両の運転中に内筒を倒れにくくして、操縦安定性を向上させることができる。   In the vibration isolator, an abutting member that abuts on the body side member is attached to one end portion of the inner cylinder in a state of being sandwiched between the body side member, and the body side of the corresponding contacting member The surface on the side in contact with the member is set to have a larger outer shape than the end surface of one end of the inner cylinder, and the contact member includes an annular wall that fits to the outer periphery of the one end of the inner cylinder. The outer wall may be fitted on one end of the inner cylinder. In this case, the contact surface attached to the one end portion of the inner cylinder ensures a large contact surface with respect to the body side member, so that it is difficult for the inner cylinder to fall during driving of the vehicle, thereby improving steering stability. it can.

また、上記防振装置においては、前記防振基体に、前記内筒を挟んで相対する一対の空洞部が軸方向に貫通して設けられ、該一対の空洞部が前記内筒を挟む方向と直交する方向において前記内筒と前記外筒とを結合する一対の防振基体部分にそれぞれ中間板が埋設されてもよい。これにより、空洞部が内筒を挟む方向と、中間板を設けたこれに直交する方向とで、ばね特性により大きな異方向性を与えることができる。   In the vibration isolator, a pair of cavities facing each other with the inner cylinder interposed therebetween are provided in the vibration proof base so as to penetrate in the axial direction, and the pair of cavities sandwich the inner cylinder. An intermediate plate may be embedded in each of a pair of vibration-isolating base portions that connect the inner cylinder and the outer cylinder in the orthogonal direction. Thereby, a big different directionality can be given to a spring characteristic by the direction where a hollow part pinches | interposes an inner cylinder, and the direction orthogonal to this which provided the intermediate | middle board.

上記のように、本発明によれば、ボディマウントなどの防振装置の誤組み付けを確実に防止することができる。   As described above, according to the present invention, it is possible to reliably prevent erroneous assembly of a vibration isolator such as a body mount.

以下、本発明の一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。   Hereinafter, a vibration isolator according to an embodiment of the present invention will be described with reference to the drawings.

本実施形態の防振装置は、自動車のサスペンション等の足回り部材をフレーム等のボディに対して防振的に支持するためのボディマウントであり、図１に示すように、金属等の剛性材料からなる内筒１０と、これを取り囲んで同心状に配された金属等の剛性材料からなる外筒１２と、これら内筒１０と外筒１２の間に加硫接着手段により介設されて両者を結合するゴム弾性体よりなる防振基体１４とを備えて構成されている。   The vibration isolator of this embodiment is a body mount for supporting an undercarriage member such as a suspension of an automobile on a body such as a frame in an anti-vibration manner. As shown in FIG. 1, a rigid material such as a metal is used. An inner cylinder 10, an outer cylinder 12 made of a rigid material such as a metal concentrically surrounding the inner cylinder 10, and a vulcanizing adhesive means interposed between the inner cylinder 10 and the outer cylinder 12. And an anti-vibration base 14 made of a rubber elastic body.

内筒１０は、軸方向Ｚを上下方向Ｌにしてその上端部１０Ａがボディ側部材２に取り付けられる部材であり、中空部１０Ｂに連結部材であるボルト１が挿入されて、ボルト１によりボディ側部材２に押圧した状態に締結固定される。   The inner cylinder 10 is a member whose axial direction Z is the vertical direction L and whose upper end portion 10A is attached to the body side member 2. The bolt 1 which is a connecting member is inserted into the hollow portion 10B, and the bolt 1 is the body side. The member 2 is fastened and fixed in a pressed state.

外筒１２は、振動体であるサスペンションのメンバー部材３に取り付けられる部材であり、筒状ホルダ４によりメンバー部材３に形成された嵌合穴４Ａに対してその下方から圧入内嵌される。図４に示すように、外筒１２の外周面には、嵌合穴４Ａへの圧入後の抜け止めや据わりをよくするため、周方向に全周にわたって延びる複数本の環状ゴム部１６が加硫成形により凸状に形成されている。   The outer cylinder 12 is a member that is attached to the member member 3 of the suspension, which is a vibrating body, and is press-fitted and fitted into the fitting hole 4A formed in the member member 3 by the cylindrical holder 4 from below. As shown in FIG. 4, a plurality of annular rubber portions 16 extending around the entire circumference in the circumferential direction are added to the outer peripheral surface of the outer cylinder 12 in order to improve the retaining and setting after press-fitting into the fitting hole 4A. It is formed in a convex shape by sulfur molding.

外筒１２の下端部には、半径方向Ｒ外方に延びるフランジ１８が全周にわたって環状に設けられており、このフランジ１８が設けられた外筒１２の端面、即ちフランジ１８の下面１８Ａに、防振基体１４から連なるゴムにより軸方向Ｚの外方に突出するストッパゴム部２０が形成されている。   A flange 18 extending outward in the radial direction R is provided annularly at the lower end of the outer cylinder 12, and an end surface of the outer cylinder 12 provided with the flange 18, that is, a lower surface 18 A of the flange 18, A stopper rubber portion 20 that protrudes outward in the axial direction Z is formed by rubber continuous from the vibration isolating base 14.

図２，５に示すように、ストッパゴム部２０は、フランジ１８の周方向Ｐに並設された複数の凸部２０Ａ，２０Ｂにより構成されている。詳細には、９０°間隔で設けられた比較的扁平で周方向長の長い４つの第１凸部２０Ａと、その間に設けられた山形の第２凸部２０Ｂとからなり、第１凸部２０Ａの方が、第２凸部２０Ｂより突出高さが低く、かつ、先端面が平坦に形成されている。ストッパゴム部２０の表面には、異音防止のためにシボ加工が施されている（シボ加工が施される領域は図４，５において符号２２の二点鎖線で示している）。シボ加工の具体的構成については、特に限定されないが、例えば、半径０．５ｍｍ、高さ０．５ｍｍの球冠状突起（シボ）を３０個／ｃｍ２程度で加工する態様が挙げられる。 As shown in FIGS. 2 and 5, the stopper rubber portion 20 is composed of a plurality of convex portions 20 </ b> A and 20 </ b> B arranged in parallel in the circumferential direction P of the flange 18. Specifically, the first convex portion 20A includes four first convex portions 20A that are relatively flat and long in the circumferential direction provided at intervals of 90 °, and a mountain-shaped second convex portion 20B that is provided therebetween. The protrusion height is lower than that of the second protrusion 20B, and the tip surface is formed flat. The surface of the stopper rubber portion 20 is subjected to a texture to prevent abnormal noise (the region where the texture is applied is indicated by a two-dot chain line 22 in FIGS. 4 and 5). Although the specific structure of the embossing is not particularly limited, for example, there is an embodiment in which spherical crown-shaped protrusions (textures) having a radius of 0.5 mm and a height of 0.5 mm are processed at about 30 / cm 2 .

フランジ１８の下面１８Ａには、また、上記ストッパゴム部２０の周りに環状の被押圧面部２４が設けられている。被押圧面部２４は、嵌合穴４Ａへの圧入時に、圧入治具１００によって軸方向Ｚに押圧される部分であり（図９参照）、フランジ１８の下面１８Ａにストッパゴム部２０から連なる薄肉のゴム層２６を覆設することで構成されている。   An annular pressed surface portion 24 is provided around the stopper rubber portion 20 on the lower surface 18A of the flange 18. The pressed surface portion 24 is a portion that is pressed in the axial direction Z by the press-fitting jig 100 at the time of press-fitting into the fitting hole 4A (see FIG. 9), and is a thin wall continuous from the stopper rubber portion 20 to the lower surface 18A of the flange 18. It is configured by covering the rubber layer 26.

そして、この被押圧面部２４には、内筒１０を挟んで径方向Ｒに相対する２箇所に、上記圧入治具１００に対する位置決め用凸部２８が設けられている。位置決め用凸部２８は、ストッパゴム部２０の一部を径方向Ｒ外方に突出させることで形成されており、この例では、図２に示すように、車両前後方向Ｘに相対する一対の第１凸部２０Ａ，２０Ａからそれぞれ突設されている。なお、位置決め用凸部２８は、図４に示すように、第１凸部２０Ａと同じ高さで形成されている。   The pressed surface portion 24 is provided with positioning convex portions 28 for the press-fitting jig 100 at two locations facing the radial direction R across the inner cylinder 10. The positioning convex portion 28 is formed by projecting a part of the stopper rubber portion 20 outward in the radial direction R. In this example, as shown in FIG. Projecting from the first protrusions 20A and 20A, respectively. In addition, as shown in FIG. 4, the positioning convex part 28 is formed at the same height as the first convex part 20A.

前後の位置決め用凸部２８は、図２に示すように、互いに異なる形状に形成されており、すなわち、一方の位置決め用凸部２８（図２における下側の凸部２８）は、第１凸部２０Ａの周方向Ｐにおける両端部において比較的小さな幅で突設されており、他方の位置決め用凸部２８は（図２における上側の凸部２８）、第１凸部２０Ａの周方向Ｐにおける半分以上の広幅で、かつその周方向Ｐの一端側に偏在させて突設されている。このような位置決め用凸部２８の位置、形成幅、数などを防振装置毎に変更することにより、各防振装置の区別が可能となる。   The front and rear positioning convex portions 28 are formed in different shapes as shown in FIG. 2, that is, one positioning convex portion 28 (the lower convex portion 28 in FIG. 2) is a first convex portion. The protrusions 28 have a relatively small width at both ends in the circumferential direction P of the portion 20A, and the other positioning convex portion 28 (the upper convex portion 28 in FIG. 2) is in the circumferential direction P of the first convex portion 20A. It has a width of more than half and protrudes from one end side in the circumferential direction P. By changing the position, formation width, number, and the like of the positioning projections 28 for each vibration isolator, it is possible to distinguish each vibration isolator.

図２に示すように、ストッパゴム部２０には、その周方向Ｐにおける一箇所に目視可能な円形な識別マーク３０がペイントなどにより付されている。識別マーク３０は、車両下面から目視可能な位置に設けられており、この例では、上記広幅の位置決め用凸部２８にかかるように第１凸部２０Ａの先端面に設けられている。かかる識別マーク３０の色を防振装置毎に変更することにより、それらの区別が可能となる。   As shown in FIG. 2, the stopper rubber portion 20 is provided with a visible circular identification mark 30 at one place in the circumferential direction P by paint or the like. The identification mark 30 is provided at a position visible from the lower surface of the vehicle. In this example, the identification mark 30 is provided on the front end surface of the first convex portion 20A so as to cover the wide positioning convex portion 28. These colors can be distinguished by changing the color of the identification mark 30 for each image stabilizer.

図２〜４に示すように、フランジ１８の外縁部には、径方向Ｒ外方に突出する識別突起３２が、ストッパゴム部２０から連なるゴムにより形成されている。識別突起３２は、内筒１０を挟んで径方向Ｒに相対する二箇所に設けられており、この例では、上記位置決め用凸部２８に合わせて、車両前後方向Ｘに相対する位置に設けられている。この識別突起３２により、ばね特性に異方向性がある防振装置の前後の識別を目視で簡単に行うことができる。なお、フランジ１８は、識別突起３２が設けられた位置で外縁部が湾曲状に切り欠かれており、この切欠部３４を包み込むようにしてヒレ状の識別突起３２が形成されている。   As shown in FIGS. 2 to 4, an identification protrusion 32 that protrudes outward in the radial direction R is formed on the outer edge portion of the flange 18 by rubber continuous from the stopper rubber portion 20. The identification protrusions 32 are provided at two locations opposed to the radial direction R across the inner cylinder 10. In this example, the identification projections 32 are provided at positions opposed to the vehicle longitudinal direction X in accordance with the positioning projections 28. ing. With this identification protrusion 32, it is possible to easily visually identify the front and rear of the vibration isolator having an omnidirectional spring characteristic. The flange 18 has an outer edge cut into a curved shape at a position where the identification protrusion 32 is provided, and a fin-shaped identification protrusion 32 is formed so as to wrap around the notch 34.

防振基体１４には、内筒１０を挟んで直径方向（詳細には、車両前後方向Ｘ）に相対する両側位置に、軸方向Ｚに貫通するすぐりと称する一対の空洞部３６，３６が設けられている。また、これら一対の空洞部３６，３６が内筒１０を挟む方向と直交する方向（詳細には、車両左右方向Ｙ）において内筒１０と外筒１２とを結合する一対の防振基体部分１４Ａ，１４Ａには、それぞれ中間板３８が埋設されている。そして、これにより、車両の前後方向Ｘにおけるバネ定数が低く、車両の左右方向Ｙのバネ定数が高く設定されて、乗り心地がよくしかも操縦安定性を高めるようにしている。   The vibration isolating base 14 is provided with a pair of cavities 36 and 36 that are referred to as straight holes penetrating in the axial direction Z at opposite positions in the diameter direction (specifically, the vehicle longitudinal direction X) across the inner cylinder 10. It has been. Further, the pair of anti-vibration base portions 14 </ b> A that couple the inner cylinder 10 and the outer cylinder 12 in a direction orthogonal to the direction in which the pair of hollow portions 36, 36 sandwich the inner cylinder 10 (specifically, the vehicle left-right direction Y). , 14A have intermediate plates 38 embedded therein. As a result, the spring constant in the front-rear direction X of the vehicle is low, and the spring constant in the left-right direction Y of the vehicle is set high, so that riding comfort is improved and steering stability is improved.

中間板３８は、円弧状に湾曲する金属板からなり、その周方向Ｐの中央部には、上下２箇所に貫通穴４０が設けられて、防振基体１４の加硫成形時における未加硫ゴムの回りを良好にしている。図４に示すように、中間板３８の軸方向両端部３８Ａ，３８Ａは、防振基体１４から所定長（例えば約３ｍｍ）突出するように構成されており、これにより、加硫成形時における成形型への中間板３８の取付け及び保持を容易かつ確実にしている。   The intermediate plate 38 is made of a metal plate that is curved in an arc shape, and through holes 40 are provided at two locations in the upper and lower portions in the center portion in the circumferential direction P. The rubber circumference is good. As shown in FIG. 4, both end portions 38A, 38A in the axial direction of the intermediate plate 38 are configured to protrude from the vibration isolating base 14 by a predetermined length (for example, about 3 mm), thereby forming during vulcanization molding. The intermediate plate 38 is easily and securely attached to the mold.

図１，６に示すように、内筒１０の上端部１０Ａには、ボディ側部材２に当接するリング状の当接部材４２が取り付けられている。当接部材４２は、金属等の剛性材料からなる部材であり、内筒１０の上端面１０Ｃと、ボディ側部材２のフランジ部２Ａの下面との間で挟まれた状態に組み付けられる。当接部材４２は、ボディ側部材２の下面に圧接される円形リング板状の圧接壁部４４と、その周縁部から下方に延設されて内筒１０の上端部１０Ａの外周に嵌合する環状壁４６とからなる。そして、この環状壁４６内に内筒１０の上端部１０Ａを圧入することで、当接部材４２は当該上端部１０Ａに外嵌固定される。   As shown in FIGS. 1 and 6, a ring-shaped contact member 42 that contacts the body-side member 2 is attached to the upper end portion 10 </ b> A of the inner cylinder 10. The contact member 42 is a member made of a rigid material such as metal, and is assembled in a state of being sandwiched between the upper end surface 10C of the inner cylinder 10 and the lower surface of the flange portion 2A of the body side member 2. The abutting member 42 is fitted to the outer periphery of the upper end portion 10 </ b> A of the inner cylinder 10, extending downward from the peripheral edge of the circular ring plate-shaped press-contacting wall 44 pressed against the lower surface of the body-side member 2. And an annular wall 46. Then, by pressing the upper end portion 10A of the inner cylinder 10 into the annular wall 46, the contact member 42 is fitted and fixed to the upper end portion 10A.

当接部材４２のボディ側部材２に当接する側の面、即ち圧接壁部４４の上面４４Ａは、内筒１０の上端面１０Ｃよりも外周形状が大に設定されており、この例では、圧接壁部４４の上面４４Ａの外径が内筒１０の上端面１０Ｃの外径よりも大に設定されており、またこの上面４４Ａの面積が内筒１０の上端面１０Ｃの面積よりも大に設定されている。   The surface of the contact member 42 that contacts the body side member 2, that is, the upper surface 44 </ b> A of the press contact wall portion 44 is set to have a larger outer peripheral shape than the upper end surface 10 </ b> C of the inner cylinder 10. The outer diameter of the upper surface 44A of the wall 44 is set larger than the outer diameter of the upper end surface 10C of the inner cylinder 10, and the area of the upper surface 44A is set larger than the area of the upper end surface 10C of the inner cylinder 10. Has been.

図７，８に示すように、環状壁４６の内周面には、軸方向に延びる８本のリブ４８が周方向に一定間隔で分散配置されている。また、図７に示すように、環状壁４６の外周面は、先端（下端）ほど小径のテーパ面状に形成されている。   As shown in FIGS. 7 and 8, eight ribs 48 extending in the axial direction are distributed on the inner peripheral surface of the annular wall 46 at regular intervals in the circumferential direction. As shown in FIG. 7, the outer peripheral surface of the annular wall 46 is formed in a tapered surface shape having a smaller diameter at the tip (lower end).

以上の構成を備える本実施形態の防振装置は、内筒１０と外筒１２との間に防振基体１４を加硫成形することで図２〜４に示す形状とした後、防振基体１４における加硫後の収縮による残留歪みを除去するために、外筒１２を径方向Ｒの内方に圧縮させるいわゆる絞りが施され、更に、図６に示すように、内筒１０の上端部１０Ａに当接部材４２を圧入により被せることで製造される。   The anti-vibration device of the present embodiment having the above-described configuration is obtained by vulcanizing and molding the anti-vibration base 14 between the inner cylinder 10 and the outer cylinder 12 to obtain the shape shown in FIGS. In order to remove residual strain due to shrinkage after vulcanization at 14, a so-called throttling is performed to compress the outer cylinder 12 inward in the radial direction R. Further, as shown in FIG. 10A is manufactured by covering the contact member 42 by press-fitting.

このようにして製造された防振装置は、図９に示すように、外筒１２をメンバー部材３の嵌合穴４Ａに下方から圧入内嵌して固定する。詳細には、防振装置を圧入治具１００にセットし、ストッパゴム部２０の外周の被押圧面部２４を圧入治具１００により軸方向Ｚに押圧して、外筒１２を嵌合穴４Ａ内に圧入する。   As shown in FIG. 9, the vibration isolator thus manufactured fixes the outer cylinder 12 by press-fitting and fitting into the fitting hole 4 </ b> A of the member member 3 from below. Specifically, the vibration isolator is set in the press fitting jig 100, the pressed surface portion 24 on the outer periphery of the stopper rubber portion 20 is pressed in the axial direction Z by the press fitting jig 100, and the outer cylinder 12 is inserted into the fitting hole 4A. Press fit into.

その際、被押圧面部２４に位置決め用凸部２８が設けられているので、該位置決め用凸部２８が圧入治具１００の先端面に設けられた凹部１０２と嵌合しない限り、圧入作業を行うことができない。すなわち、図１０に示すように、圧入治具１００には、対応する防振装置に応じて、周方向の所定箇所に上記位置決め用凸部２８と嵌合する凹部１０２が設けられており、両者が嵌合するように防振装置を圧入治具１００にセットしてから、嵌合穴４Ａに対する圧入作業を実施する。   At this time, since the positioning convex portion 28 is provided on the pressed surface portion 24, the press-fitting operation is performed unless the positioning convex portion 28 is fitted to the concave portion 102 provided on the front end surface of the press-fitting jig 100. I can't. That is, as shown in FIG. 10, the press-fitting jig 100 is provided with a concave portion 102 that fits the positioning convex portion 28 at a predetermined position in the circumferential direction according to the corresponding vibration isolator. After the vibration isolator is set in the press-fitting jig 100 so as to fit, the press-fitting operation into the fitting hole 4A is performed.

このようにして、嵌合穴４Ａに圧入した後、内筒１０の中空部１０Ｂに上方からボディ側部材２を挿入するとともに下方からボルト１を挿入して締結することで、内筒１０がボディ側部材２に押圧固定される。その際、内筒１０の下端には、上記ストッパゴム部２０を上下方向Ｌで受け止める円板状のストッパ金具５０がボルト１によって挟持固定される。また、メンバー部材３の筒状ホルダ４とボディ側部材２のフランジ部２Ａとの間には、外筒１２側の上方への変位を制限するストッパ部材５２が配される。ストッパ部材５２は、筒状ホルダ４の上端部に当接配置されるリング状プレート５４と、その上面に設けられてボディ側部材２Ａに当接するストッパゴム部５６とからなり、ストッパゴム部５６は内向きのリップゴム部５８を備える。   Thus, after press-fitting into the fitting hole 4A, the body side member 2 is inserted into the hollow portion 10B of the inner cylinder 10 from above and the bolt 1 is inserted from below to fasten the inner cylinder 10 to the body. It is pressed and fixed to the side member 2. At that time, a disc-shaped stopper fitting 50 that receives the stopper rubber portion 20 in the vertical direction L is clamped and fixed to the lower end of the inner cylinder 10 by the bolt 1. Further, a stopper member 52 that restricts the upward displacement on the outer cylinder 12 side is disposed between the cylindrical holder 4 of the member member 3 and the flange portion 2A of the body side member 2. The stopper member 52 includes a ring-shaped plate 54 disposed in contact with the upper end portion of the cylindrical holder 4 and a stopper rubber portion 56 provided on the upper surface thereof and in contact with the body side member 2A. An inward lip rubber portion 58 is provided.

以上よりなる本実施形態の防振装置であると、上記位置決め用凸部２８、識別マーク３０および識別突起３２を設けたことにより、誤った防振装置を嵌合穴４Ａに組み付けるという不具合を簡単かつ確実に解消することができ、しかも、防振装置の組み付け方向を誤るという不具合も解消される。   In the vibration isolator of the present embodiment configured as described above, the above-described positioning convex portion 28, the identification mark 30 and the identification protrusion 32 are provided, so that the problem of assembling the wrong vibration isolator into the fitting hole 4A is easy. In addition, it can be surely solved, and the problem of wrong mounting direction of the vibration isolator is also eliminated.

また、本実施形態の防振装置であると、上記当接部材４２によりボディ側部材２に対する当接面積が大きく確保されるので、自動車の運転中に作用するこじれ方向の荷重に対して内筒１０が倒れにくく、そのため操縦安定性に優れる。また、環状壁４６の内周面に設けた上記リブ４８により、上記内筒１０の倒れ防止機能を確保しながら、内筒１０の上端部１０Ａを環状壁４６内に圧入しやすくして、当接部材４２の取付け作業性に優れる。   Further, in the vibration isolator of the present embodiment, the abutment member 42 ensures a large abutment area with respect to the body side member 2, so that the inner cylinder against the load in the twisted direction acting during driving of the automobile. 10 is hard to fall down, and therefore, the steering stability is excellent. Further, the rib 48 provided on the inner peripheral surface of the annular wall 46 makes it easy to press-fit the upper end portion 10A of the inner cylinder 10 into the annular wall 46 while ensuring the fall prevention function of the inner cylinder 10. The attachment workability of the contact member 42 is excellent.

図１１は、当接部材４２回りの構成の変更例を示したものである。この例では、環状壁４６が外嵌する内筒上端部１０Ａの外周面１０Ｄに、肉厚が一定のゴム膜６０が防振基体１４から連なるゴムにより加硫接着されて形成されており、このゴム膜６０に上記複数のリブ４８が食い込むように構成されている。ゴム膜６０は、防振基体１４との間の他のゴム膜部分６２に対して段部６４を介して一段低く、即ち他のゴム膜部分６２よりも小径に形成されている。   FIG. 11 shows a modified example of the configuration around the contact member 42. In this example, a rubber film 60 having a constant thickness is formed by vulcanizing and bonding with a rubber continuous from the vibration isolating base 14 on the outer peripheral surface 10D of the inner cylinder upper end portion 10A to which the annular wall 46 is fitted. The plurality of ribs 48 are configured to bite into the rubber film 60. The rubber film 60 is formed one step lower than the other rubber film part 62 between the vibration isolating substrate 14 and the other rubber film part 62, that is, smaller in diameter than the other rubber film part 62.

このようなゴム膜６０を設けて当接部材４２のリブ４８が食い込むようにすることで、内筒１０と当接部材４２との周方向での相対変位が抑制され、かかる相対変位に起因する異音の発生を防止することができる。   By providing such a rubber film 60 so that the rib 48 of the contact member 42 bites in, the relative displacement in the circumferential direction between the inner cylinder 10 and the contact member 42 is suppressed, and this is caused by the relative displacement. Generation of abnormal noise can be prevented.

本発明の防振装置であると、ボディマウントを始めとする自動車等の各種車両におけるマウント装置として好適に利用することができる。   The vibration isolator of the present invention can be suitably used as a mount device in various vehicles such as automobiles including body mounts.

本発明の一実施形態に係る防振装置の使用状態での縦断面図である。It is a longitudinal cross-sectional view in the use condition of the vibration isolator which concerns on one Embodiment of this invention. 当接部材を取り付ける前の同防振装置の底面図である。It is a bottom view of the vibration isolator before attaching a contact member. 当接部材を取り付ける前の同防振装置の平面図である。It is a top view of the vibration isolator before attaching a contact member. 図３のIV−IV線の断面図である。It is sectional drawing of the IV-IV line of FIG. 図３のＶ方向から見た要部拡大図である。FIG. 4 is an enlarged view of a main part when viewed from a V direction in FIG. 3. 同防振装置の縦断面図である。It is a longitudinal cross-sectional view of the vibration isolator. 当接部材の縦断面図である。It is a longitudinal cross-sectional view of a contact member. 当接部材の底面図である。It is a bottom view of a contact member. 同防振装置の嵌合穴への圧入作業時の断面図である。It is sectional drawing at the time of the press fit operation | work to the fitting hole of the vibration isolator. 圧入治具の要部斜視図である。It is a principal part perspective view of a press-fitting jig. 他の実施形態に係る当接部材の拡大断面図である。It is an expanded sectional view of the contact member concerning other embodiments.

符号の説明Explanation of symbols

１０…内筒、１０Ａ…内筒の上端部（一端部）、１０Ｃ…内筒の上端面（一端面）、１２…外筒、１４…防振基体、１４Ａ…防振基体部分、１８…フランジ、１８Ａ…下面（端面）、２０…ストッパゴム部、２４…被押圧面部、２８…位置決め用凸部、３０…識別マーク、３２…識別突起、３６…空洞部、３８…中間板、４２…当接部材、４６…環状壁、２…ボディ側部材、３…メンバー部材（振動体）、４Ａ…嵌合穴、１００…圧入治具、Ｐ…周方向、Ｒ…径方向、Ｚ…軸方向、 DESCRIPTION OF SYMBOLS 10 ... Inner cylinder, 10A ... Upper end part (one end part) of an inner cylinder, 10C ... Upper end surface (one end surface) of an inner cylinder, 12 ... Outer cylinder, 14 ... Anti-vibration base | substrate, 14A ... Anti-vibration base | substrate part, 18 ... Flange 18A ... Lower surface (end surface), 20 ... Stopper rubber part, 24 ... Pressed surface part, 28 ... Positioning convex part, 30 ... Identification mark, 32 ... Identification protrusion, 36 ... Hollow part, 38 ... Intermediate plate, 42 ... Contact member, 46 ... annular wall, 2 ... body side member, 3 ... member member (vibrating body), 4A ... fitting hole, 100 ... press-fitting jig, P ... circumferential direction, R ... radial direction, Z ... axial direction,

Claims (6)

ボディ側部材に取り付けられる内筒と、該内筒を取り囲むものであって振動体側に形成された嵌合穴に圧入内嵌する外筒と、前記内筒と外筒との間に介設されて両筒を結合するゴム弾性体からなる防振基体とを備えた防振装置であって、
前記外筒の一端部に径方向外方に延びるフランジが設けられ、
該フランジが設けられた前記外筒の端面には、軸方向外方に突出するストッパゴム部が設けられるとともに、該ストッパゴム部の外周に前記嵌合穴への圧入時において圧入治具により軸方向に押圧される環状の被押圧面部が設けられ、該被押圧面部の周方向における一又は複数箇所に前記ストッパゴム部の一部を径方向外方に突出させることで前記圧入治具に対する位置決め用凸部が設けられた
ことを特徴とする防振装置。 An inner cylinder that is attached to the body side member, an outer cylinder that surrounds the inner cylinder and is press-fitted into a fitting hole formed on the vibrating body side, and is interposed between the inner cylinder and the outer cylinder An anti-vibration device comprising an anti-vibration base made of a rubber elastic body that joins both cylinders,
A flange extending radially outward is provided at one end of the outer cylinder,
A stopper rubber portion protruding outward in the axial direction is provided on the end surface of the outer cylinder provided with the flange, and a shaft is inserted into the outer periphery of the stopper rubber portion by a press-fitting jig when press-fitting into the fitting hole. An annular pressed surface portion that is pressed in the direction is provided, and positioning with respect to the press-fitting jig is performed by projecting a part of the stopper rubber portion radially outward at one or a plurality of locations in the circumferential direction of the pressed surface portion. An anti-vibration device characterized in that a convex portion is provided. 前記位置決め用凸部が前記内筒を挟んで径方向に相対させて設けられ、該相対する位置決め用凸部が互いに異なる形状に形成されたことを特徴とする請求項１記載の防振装置。   2. The vibration isolator according to claim 1, wherein the positioning convex portions are provided to be opposed to each other in the radial direction across the inner cylinder, and the opposing positioning convex portions are formed in different shapes. 前記ストッパゴム部の周方向における一箇所に目視可能な識別マークが付されたことを特徴とする請求項１又は２記載の防振装置。   The vibration isolator according to claim 1 or 2, wherein a visible identification mark is attached to one place in the circumferential direction of the stopper rubber portion. 前記内筒を挟んで径方向に相対する前記フランジの周方向における二箇所に、径方向外方に突出する識別突起が、前記ストッパゴム部から連なるゴムにより設けられたことを特徴とする請求項１〜３のいずれかに記載の防振装置。   The identification protrusion protruding outward in the radial direction is provided at two locations in the circumferential direction of the flange opposite to the radial direction across the inner cylinder by rubber continuous from the stopper rubber portion. The vibration isolator in any one of 1-3. 前記内筒の一端部に前記ボディ側部材との間で挟まれた状態に前記ボディ側部材に当接する当接部材が取り付けられ、該当接部材の前記ボディ側部材に当接する側の面が、前記内筒の一端部の端面よりも外周形状が大に設定され、前記当接部材は、前記内筒の一端部の外周に嵌合する環状壁を備えて、該環状壁により前記内筒の一端部に外嵌されたことを特徴とする請求項１〜４のいずれかに記載の防振装置。   A contact member that contacts the body side member is attached to one end portion of the inner cylinder between the body side member and a surface of the contact member that contacts the body side member is The outer peripheral shape is set to be larger than the end surface of one end of the inner cylinder, and the contact member includes an annular wall that fits to the outer periphery of the one end of the inner cylinder, and the annular wall causes the inner cylinder to The vibration isolator according to any one of claims 1 to 4, wherein the vibration isolator is fitted on one end. 前記防振基体には、前記内筒を挟んで相対する一対の空洞部が軸方向に貫通して設けられ、該一対の空洞部が前記内筒を挟む方向と直交する方向において前記内筒と前記外筒とを結合する一対の防振基体部分にそれぞれ中間板が埋設されたことを特徴とする請求項１〜５のいずれかに記載の防振装置。
The vibration-isolating base is provided with a pair of cavities facing each other with the inner cylinder sandwiched therebetween in the axial direction, and the pair of cavities and the inner cylinder in a direction perpendicular to the direction sandwiching the inner cylinder The vibration isolator according to any one of claims 1 to 5, wherein an intermediate plate is embedded in each of a pair of vibration isolating base portions that couple the outer cylinder.
JP2006141866A 2006-05-22 2006-05-22 Vibration isolator Expired - Fee Related JP4199262B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010060022A (en) * 2008-09-02 2010-03-18 Toyo Tire & Rubber Co Ltd Vibration damping bushing
JP2010139017A (en) * 2008-12-12 2010-06-24 Yazaki Corp Erroneous assembling preventive structure for packing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010060022A (en) * 2008-09-02 2010-03-18 Toyo Tire & Rubber Co Ltd Vibration damping bushing
JP4716387B2 (en) * 2008-09-02 2011-07-06 東洋ゴム工業株式会社 Anti-vibration bush
JP2010139017A (en) * 2008-12-12 2010-06-24 Yazaki Corp Erroneous assembling preventive structure for packing
US8434767B2 (en) 2008-12-12 2013-05-07 Yazaki Corporation Sealing unit with mounting error prevention construction

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