JPH0610979A - Rubber vibration isolator - Google Patents
Rubber vibration isolatorInfo
- Publication number
- JPH0610979A JPH0610979A JP18748892A JP18748892A JPH0610979A JP H0610979 A JPH0610979 A JP H0610979A JP 18748892 A JP18748892 A JP 18748892A JP 18748892 A JP18748892 A JP 18748892A JP H0610979 A JPH0610979 A JP H0610979A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- notch
- inner cylinder
- vibration
- vibration isolator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Springs (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、自動車や産業用機械
等の動力源の支持に使用される、例えばエンジンマウン
ト等の防振ゴムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration rubber such as an engine mount, which is used for supporting a power source such as an automobile or an industrial machine.
【0002】[0002]
【従来の技術】従来のこの種防振ゴムとしては、図5に
示すように、剛性材料よりなる内筒100と外金具10
1との間に弾性ゴム体102を装置し、弾性ゴム体10
2の内筒100を挟んで対向する位置に切欠空所10
3,104を設け、これら切欠空所103,104の外
金具101側にストッパ105,106を形成したもの
が知られている。図示する例では、内筒100を下方へ
下げる荷重がかかった状態で振動するので、下方のスト
ッパ106に内筒100を囲むゴムがぶつかる前は、バ
ネ特性がリニアーに上がってゆくが、ストッパ106に
ぶつかった後はバネ特性が硬くなる(図4の破線のグラ
フ参照)。図4の符号Cで示す個所がストッパ106へ
内筒100を囲むゴムがぶつかった状態を示す。2. Description of the Related Art As a conventional anti-vibration rubber of this kind, as shown in FIG. 5, an inner cylinder 100 and an outer metal fitting 10 made of a rigid material are used.
The elastic rubber body 102 is installed between the
The notch space 10 is provided at a position facing each other with the inner cylinder 100 of 2 interposed therebetween.
It is known that 3, 104 are provided, and stoppers 105, 106 are formed on the outer metal fitting 101 side of these cutout cavities 103, 104. In the example shown in the drawing, the inner cylinder 100 vibrates in a state in which a load is applied downward, so before the rubber surrounding the inner cylinder 100 hits the lower stopper 106, the spring characteristic increases linearly. After hitting, the spring characteristic becomes hard (see the broken line graph in FIG. 4). A portion indicated by a symbol C in FIG. 4 shows a state where the rubber surrounding the inner cylinder 100 hits the stopper 106.
【0003】[0003]
【発明が解決しようとする課題】従来の防振ゴムは、図
4のグラフに示すように、ストッパ106へ内筒100
を囲むゴムがぶつかり、切欠空所104が閉じた状態に
なるとバネ特性が急激に硬くなり、このときに振動、騒
音を発生させていた。In the conventional anti-vibration rubber, as shown in the graph of FIG.
When the rubber surrounding the cylinder hits and the notch cavity 104 is closed, the spring characteristics suddenly become hard, and at this time vibration and noise are generated.
【0004】そこで、この発明は、内筒を囲むゴムがス
トッパ等にぶつかってバネ特性が急激に立上るのを防
ぎ、振動、騒音の発生を抑えることのできる防振ゴムを
提供することを目的とする。Therefore, an object of the present invention is to provide a vibration-proof rubber capable of preventing the rubber surrounding the inner cylinder from hitting a stopper or the like and suddenly raising the spring characteristic, and suppressing the generation of vibration and noise. And
【0005】[0005]
【課題を解決するための手段】上述の目的を達成するた
め、この発明は、剛性材料よりなる内筒と外金具との間
に弾性ゴム体を装着し、弾性ゴム体の内筒を挟んで対向
する位置に切欠空所を設けた防振ゴムにおいて、少なく
とも1つの切欠空所の外側に切欠部を形成したものであ
る。In order to achieve the above-mentioned object, according to the present invention, an elastic rubber body is mounted between an inner cylinder made of a rigid material and an outer metal fitting, and the inner cylinder of the elastic rubber body is sandwiched. In a vibration-proof rubber having a cutout space provided at a position facing each other, a cutout portion is formed outside at least one cutout space.
【0006】[0006]
【実施例】以下に、この発明の好適な実施例を図面を参
照にして説明する。図1に示す第1実施例は、剛性材料
よりなる内筒1と外金具2との間に弾性ゴム体3を装着
し、弾性ゴム体3の内筒1を挟んで対向する位置に切欠
空所4,5を設けてある。切欠空所5の外側に切欠部6
を形成してある。内筒1を囲む弾性ゴム体3は本体ゴム
30を形成し、切欠空所4の外金具2側にはストッパゴ
ム31を形成し、切欠空所5と切欠部6との間には中間
ゴム32を形成するとともに、切欠部6の外金具2側に
はストッパゴム33を形成してある。図1に示すタイプ
の防振ゴムは、エンジンマウント等として使用されるも
のであり、内筒1を下方へ下げる荷重Wがかかってい
る。即ち、本体ゴム30に荷重Wが矢印方向へかかると
本体ゴム30は変位するが、中間ゴム32に接触しない
範囲に設計しておく。中程度の入力負荷時は、本体ゴム
30が中間ゴム32に接触してバネ特性が若干硬くなり
本体ゴム30の動きを規制する。さらに、大きな入力負
荷時には中間ゴム32に本体ゴム30が接触してバネ特
性が硬くなってからストッパゴム33へ接触することと
なる。即ち、図4のグラフの実線で示すような特性を示
し、符号Aの個所が本体ゴム30が中間ゴム32に接触
した状態を示し、符号Bが中間ゴム32がストッパゴム
33に接触した状態を示す。この図4の実線で示すグラ
フからも明らかなように、バネ特性が滑らかに立上り、
破線で示す従来例のようにバネ特性の急激な変化が抑止
される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. In the first embodiment shown in FIG. 1, an elastic rubber body 3 is mounted between an inner cylinder 1 made of a rigid material and an outer metal fitting 2, and a cutout space is provided at a position facing each other with the inner cylinder 1 of the elastic rubber body 3 interposed therebetween. Places 4 and 5 are provided. The notch 6 is provided outside the notch 5
Has been formed. The elastic rubber body 3 surrounding the inner cylinder 1 forms a main body rubber 30, a stopper rubber 31 is formed on the outer metal fitting 2 side of the cutout space 4, and an intermediate rubber is formed between the cutout space 5 and the cutout portion 6. 32 is formed, and a stopper rubber 33 is formed on the outer metal fitting 2 side of the cutout portion 6. The anti-vibration rubber of the type shown in FIG. 1 is used as an engine mount or the like, and a load W for lowering the inner cylinder 1 is applied. That is, the body rubber 30 is displaced when the load W is applied to the body rubber 30 in the direction of the arrow, but the body rubber 30 is designed so as not to contact the intermediate rubber 32. When the input load is moderate, the body rubber 30 comes into contact with the intermediate rubber 32, and the spring characteristic is slightly hardened to restrict the movement of the body rubber 30. Further, when a large input load is applied, the body rubber 30 comes into contact with the intermediate rubber 32 and the spring characteristics become harder, and then comes into contact with the stopper rubber 33. That is, the characteristics shown by the solid line in the graph of FIG. Show. As is clear from the graph shown by the solid line in FIG. 4, the spring characteristic rises smoothly,
As in the conventional example shown by the broken line, the rapid change of the spring characteristic is suppressed.
【0007】図2に示す第2実施例は、外金具2の形状
が第1実施例とは異なり、この外金具2が取付く被取付
部材10と中間ゴム32との間に切欠部6を形成してあ
る。この切欠部6に面した被取付部材10自体が図1に
示すストッパゴム33の役目をなす。その他同一部材に
は同一符号を付して説明を省略する。The second embodiment shown in FIG. 2 differs from the first embodiment in the shape of the outer metal fitting 2 and has a notch 6 between the member 10 to which the outer metal fitting 2 is mounted and the intermediate rubber 32. Has been formed. The attached member 10 itself facing the notch 6 serves as the stopper rubber 33 shown in FIG. The other same members are designated by the same reference numerals and the description thereof will be omitted.
【0008】図3に示す第3実施例は、切欠空所4,5
の両方の外側に切欠部6を形成した例を示すものであ
り、この防振ゴムは取付け後に上下何れかに偏った荷重
がかからないタイプのものである。以上説明した何れの
実施例も、一方向に一個所の切欠部6を形成したが、大
きさによっては2以上の切欠部6を形成することもでき
る。2つの切欠部6を同一方向に形成した場合には図4
に示すグラフの符号A,Bの個所の他にさらにもう1つ
バネ特性の変曲点が増加する。In the third embodiment shown in FIG. 3, the notch cavities 4,5 are provided.
2 shows an example in which the cutout portions 6 are formed on both outer sides of the above, and this vibration isolating rubber is of a type in which a biased load is not applied to one of the upper and lower sides after attachment. In each of the embodiments described above, one notch 6 is formed in one direction, but two or more notches 6 may be formed depending on the size. When the two cutouts 6 are formed in the same direction, FIG.
In addition to the points of reference characters A and B in the graph shown in FIG. 1, another inflection point of the spring characteristic increases.
【0009】[0009]
【発明の効果】以上説明したように、この発明によれ
ば、剛性材料よりなる内筒と外金具との間に弾性ゴム体
を装着し、弾性ゴム体の内筒を挟んで対向する位置に切
欠空所を設けた防振ゴムにおいて、少なくとも1つの切
欠空所の外側に切欠部を形成したので、この切欠部側に
入力したとき、内筒を囲むゴムが中間ゴムに接触したと
きと、中間ゴムがストッパゴムに接触したときの2個所
がバネ特性変曲点となり、そのためにバネ特性が急激に
変化することがなくなり、滑らかなバネ特性となり、振
動、騒音の防止に効果が大きい。As described above, according to the present invention, the elastic rubber body is mounted between the inner cylinder made of a rigid material and the outer metal fitting, and the inner cylinder of the elastic rubber body is sandwiched between the opposing positions. In the anti-vibration rubber provided with the cutout space, since the cutout portion is formed outside at least one cutout space, when input is made to the cutout portion side, when the rubber surrounding the inner cylinder contacts the intermediate rubber, When the intermediate rubber comes into contact with the stopper rubber, two points become inflection points of the spring characteristic, so that the spring characteristic does not suddenly change, the spring characteristic becomes smooth, and the effect of preventing vibration and noise is great.
【図1】この発明の第1実施例を示す断面図。FIG. 1 is a sectional view showing a first embodiment of the present invention.
【図2】第2実施例を示す断面図。FIG. 2 is a sectional view showing a second embodiment.
【図3】第3実施例を示す断面図。FIG. 3 is a sectional view showing a third embodiment.
【図4】従来の防振ゴムとこの発明の第1実施例の防振
ゴムの荷重と撓みとの関係を示すグラフFIG. 4 is a graph showing the relationship between the load and the deflection of the conventional anti-vibration rubber and the anti-vibration rubber of the first embodiment of the present invention.
【図5】従来例を示す断面図。 1 内筒 2 外金具 3 弾性ゴム体 4,5 切欠空所 6 切欠部FIG. 5 is a sectional view showing a conventional example. 1 Inner cylinder 2 Outer metal fitting 3 Elastic rubber body 4, 5 Notch space 6 Notch part
Claims (1)
弾性ゴム体を装着し、弾性ゴム体の内筒を挟んで対向す
る位置に切欠空所を設けた防振ゴムにおいて、 少なくとも1つの切欠空所の外側に切欠部を形成したこ
とを特徴とする防振ゴム。1. An anti-vibration rubber in which an elastic rubber body is mounted between an inner cylinder made of a rigid material and an outer metal member, and a cutout space is provided at a position facing each other with the inner cylinder of the elastic rubber body sandwiched therebetween. An anti-vibration rubber, characterized in that a notch is formed on the outside of one notch space.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18748892A JPH0610979A (en) | 1992-06-22 | 1992-06-22 | Rubber vibration isolator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18748892A JPH0610979A (en) | 1992-06-22 | 1992-06-22 | Rubber vibration isolator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0610979A true JPH0610979A (en) | 1994-01-21 |
Family
ID=16206948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18748892A Pending JPH0610979A (en) | 1992-06-22 | 1992-06-22 | Rubber vibration isolator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0610979A (en) |
-
1992
- 1992-06-22 JP JP18748892A patent/JPH0610979A/en active Pending
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