JPH01242847A - Vibrationproof rubber device - Google Patents
Vibrationproof rubber deviceInfo
- Publication number
- JPH01242847A JPH01242847A JP6881388A JP6881388A JPH01242847A JP H01242847 A JPH01242847 A JP H01242847A JP 6881388 A JP6881388 A JP 6881388A JP 6881388 A JP6881388 A JP 6881388A JP H01242847 A JPH01242847 A JP H01242847A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- rubber
- hardness
- vibrationproof rubber
- vibrationproof
- 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
- 229920001971 elastomer Polymers 0.000 title claims abstract description 51
- 239000005060 rubber Substances 0.000 title claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- 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
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/08—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber
- F16F3/087—Units comprising several springs made of plastics or the like material
- F16F3/0873—Units comprising several springs made of plastics or the like material of the same material or the material not being specified
- F16F3/0876—Units comprising several springs made of plastics or the like material of the same material or the material not being specified and of the same shape
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は取付フレームから機器本体への外乱振動の伝
達を抑制する防振ゴム装置に聞するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a vibration-isolating rubber device that suppresses the transmission of external vibrations from a mounting frame to a device body.
第４図は例えば特開昭６２−１４６４７８号公報に示さ
れたものと類似の従来の防振ゴム装置を示す断面図であ
る。図において、（１）は被防振体としての機器の本体
のベース、＋２）はペース（１）を取付けるための取付
フレーム、（３）はペース（１）と取付フレーム（２）
との間に挿入され、取付フレーム（２）からペース（１
）に伝達される主として鉛直方向の振動を抑制する防振
ゴム、（４）は防振ゴム（３）を座金（５）を介してベ
ース（１）に取付ける止メネジ、（６）は止メネジ（４
）と防振ゴム（３）との間に挿入されたスペーサで、防
振ゴム（３）の過大な変形を防止するものである。FIG. 4 is a sectional view showing a conventional vibration isolating rubber device similar to that shown in, for example, Japanese Patent Laid-Open No. 62-146478. In the figure, (1) is the base of the main body of the device as the object to be vibration-isolated, +2) is the mounting frame for attaching pace (1), and (3) is the base of pace (1) and mounting frame (2).
is inserted between the mounting frame (2) and the pace (1).
), (4) is a set screw that attaches the vibration isolator (3) to the base (1) via a washer (5), and (6) is a set screw. (4
) and the vibration isolating rubber (3) to prevent excessive deformation of the vibration isolating rubber (3).
第５図は、広範囲の周波数領域で鉛直方向に、一定の振
動加速度を取付フレーム（２）に印加した場合のベース
（１）への防振ゴム（３ンの振動伝達特性を示すもので
、特定の周波数頭域で加速度が増幅され以下の周波数頭
域の振動は問題とされず、もっばらそれ以上の周波数の
領域での振動抑制が要請される。従って、通常防振ゴム
（３）としては比較的硬度の小さいものを採用して、所
定の周波数以上の領域で伝達率が１以下となるようにし
ている。Figure 5 shows the vibration transmission characteristics of the anti-vibration rubber (3) to the base (1) when a constant vibration acceleration is applied to the mounting frame (2) in the vertical direction over a wide frequency range. Acceleration is amplified in a specific frequency range, and vibrations in the lower frequency ranges are not a problem, and vibration suppression in higher frequency ranges is required.Therefore, vibration isolating rubber (3) is usually used. A material having relatively low hardness is used so that the transmissibility is 1 or less in a region of a predetermined frequency or higher.
従来の防振ゴム装置の防振ゴムは上述のとおりその硬度
を比較的小さく設定している。この結果、鉛直方向の振
動に対しては所定の抑制効果を発揮するが、鉛直方向と
直角の水平方向即ち、機器の面後・左右の方向の外部振
動に対しては防振ゴム（３）の硬度が小さいため防振ゴ
ム（３）自身がそれに追従しベース（１）が揺動し易く
なるという問題点があった。As mentioned above, the hardness of the vibration-proof rubber of the conventional vibration-proof rubber device is set to be relatively small. As a result, the anti-vibration rubber (3) exerts a certain suppressing effect against vibrations in the vertical direction; Since the hardness of the vibration isolating rubber (3) is small, the vibration isolating rubber (3) itself follows it, causing the base (1) to easily swing.
この発明は上記のような問題点を解消するためになされ
たもので、水平方向の揺動を防止できる防振ゴム装置を
得ることを目的とする。This invention was made to solve the above-mentioned problems, and an object of the invention is to obtain a vibration-proof rubber device that can prevent vibration in the horizontal direction.
〔課題を解決するための手段および作用〕この発明に係
る防振ゴム装置は、取付フレーム側に設けた第１の防振
ゴムと機器のベース側に設は第１の防振ゴムの硬度より
大きい硬度を有する第２の防振ゴムとの直列体からなり
、硬度の小さい第１の防振ゴムが本来の鉛直方向の振動
伝達を〔実施例〕
以↓この発明の一実施例を図面について説明する。[Means and effects for solving the problem] The vibration isolating rubber device according to the present invention has a first vibration isolating rubber provided on the mounting frame side and a hardness of the first vibration isolating rubber provided on the base side of the device. It is composed of a series body with a second vibration isolating rubber having a high hardness, and the first vibration isolating rubber having a low hardness transmits the vibration in the original vertical direction. explain.
図において、（１） （２） 、 （４）〜（６）は従
来の場合と同一テするので説明を省略する。（７）は取
付フレーム（２）と副フレーム（８）との間に取付けら
れた第１の防振ゴムで、従来の場合と同様所定の周波数
以上の周波数領域で鉛直方向の振動伝達を抑制するよう
にその硬度が設定されている。（９）はベース（１）と
副フレーム（８）との間に取付けられた第２の防振ゴム
で、その硬度は後述のように水平方向の揺動を防止する
ため第１の防振ゴム（７）の硬度より大きく設定されて
いる。即ち、ここでは第１の防振ゴム（７）と第２の防
振ゴム（９）とが副フレーム（８）を介して互いに直列
に連結されている。In the figure, (1), (2), and (4) to (6) are the same as in the conventional case, so their explanation will be omitted. (7) is the first anti-vibration rubber installed between the mounting frame (2) and the sub-frame (8), which suppresses vibration transmission in the vertical direction in the frequency range above a predetermined frequency, as in the conventional case. Its hardness is set as follows. (9) is a second anti-vibration rubber installed between the base (1) and the sub-frame (8), and its hardness is higher than that of the first anti-vibration rubber in order to prevent horizontal vibration as described later. The hardness is set larger than the hardness of the rubber (7). That is, here, the first anti-vibration rubber (7) and the second anti-vibration rubber (9) are connected in series to each other via the sub-frame (8).
第２図第８図はこの直列に連結された防振ゴム（７）
（９）の合成振動特性を示すもので、第２図は鉛直方向
の加振に対するもの、第８図は水平方向の加振に対する
ものを示す。即ち、鉛直方向の加振に対しては、第２図
に示すように、第１の防振ゴム（７）により所定の周波
数以上の領域の振動伝達が抑制され、第２の防振ゴム（
９）で比較的低周波領域の振動伝達が軽減され、結局、
同図の斜線に示すような合成特性が得られて全体的に伝
達率が低減する。これに対し、水平方向の加振に対して
は、第３図に示すように、低周波領域では伝達率が単独
の場合より大きくなるが、高周波領域では逆に単独の場
合より小さくなる。従って、通常実際に問題とされる周
波数領域が所定の値以上の比較的高周波の領域であるの
で、第８図における低周波領域での伝達率の上昇は問題
とならず、高周波領域での伝達率の低下が揺動を抑制す
る効果をもたらすものである。Figure 2 and Figure 8 show these vibration isolating rubbers (7) connected in series.
The composite vibration characteristics of (9) are shown in FIG. 2 for vibration in the vertical direction, and FIG. 8 for vibration in the horizontal direction. That is, for vibrations in the vertical direction, as shown in FIG.
9) reduces the vibration transmission in the relatively low frequency range, and as a result,
A composite characteristic as shown by diagonal lines in the figure is obtained, and the overall transmissibility is reduced. On the other hand, for horizontal excitation, as shown in FIG. 3, the transmissibility is larger in the low frequency region than in the case of single vibration, but conversely becomes smaller in the high frequency range than in the case of single vibration. Therefore, since the frequency range that is actually a problem is usually a relatively high frequency range above a predetermined value, the increase in transmission rate in the low frequency range shown in Fig. 8 is not a problem, and the increase in transmission rate in the high frequency range is not a problem. The reduction in the ratio brings about the effect of suppressing the fluctuation.
なお、上記実施例では第２の防振ゴム（９）を単一のも
ので構成したが、いづれも第１の防振ゴム（７）の硬度
より大きい複数の防振ゴムを直列に連結したもので構成
してもよい。In addition, in the above embodiment, the second vibration isolating rubber (9) was composed of a single rubber, but a plurality of vibration isolating rubbers each having a harder hardness than the first vibration isolating rubber (7) were connected in series. It may be composed of things.
以上のように、この発明によれば、取付フレーム側に設
けた第１の防振ゴムと機器のベース側に設は第１の防振
ゴムの硬度より大きい硬度を有する第２の防振ゴムとの
直列体から１１）！成したので、所定の周波数以上の領
域での鉛直方向の振動伝達を抑制できるとともに、水平
方向の揺動についても軽減されるという効果がある。As described above, according to the present invention, the first anti-vibration rubber provided on the mounting frame side and the second anti-vibration rubber provided on the base side of the device have a hardness greater than the hardness of the first anti-vibration rubber. 11)! As a result, it is possible to suppress transmission of vibration in the vertical direction in a region of a predetermined frequency or higher, and also to reduce vibration in the horizontal direction.
第１図はこの発明の一実施例による防振ゴム装置を示す
断面図、第２図第８図は第１図の防振ゴム装置のそれぞ
れ鉛直方向および水平方向の加振に対する伝達率と周波
数との関係を示す特性図、第４図は従来の防振ゴム装置
を示す断面図、第５図は第４図の防振ゴム装置の鉛直方
向の加振に対する伝達率と周波数との関係を示す特性図
である。
図において、（１）はａ器のベース、（２）は取付フレ
ー４、（７）は第１の防振ゴム、（９）は第２の防振ゴ
ムである。
なお、各図中同一符号は同一または相当部分を示す。
代理人 弁理士 大 岩 増 雄
第１図
（′
第２図
問・湧校（Ｈｚ）FIG. 1 is a sectional view showing a vibration isolating rubber device according to an embodiment of the present invention, and FIG. 2 and FIG. 8 are transmissibility and frequency of the vibration isolating rubber device shown in FIG. 4 is a cross-sectional view showing a conventional vibration isolating rubber device, and FIG. 5 is a characteristic diagram showing the relationship between the transmissibility and frequency of the vibration isolating rubber device shown in FIG. 4 with respect to vertical vibration. FIG. In the figure, (1) is the base of the A device, (2) is the mounting frame 4, (7) is the first vibration isolating rubber, and (9) is the second vibration isolating rubber. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent: Masuo Oiwa, Patent Attorney Diagram 1 (' Diagram 2 Questions: Yusuke (Hz)
Claims (1)
付フレームとの間に挿入され、所定値以上の周波数の領
域で主として鉛直方向の振動伝達を抑制する防振ゴム装
置において、上記防振ゴム装置を、上記取付フレームに
一端が連結され上記周波数の領域で鉛直方向の振動の伝
達率が所定値以下となる硬度を有する第１の防振ゴムと
、この第１の防振ゴムと上記機器との間に挿入され上記
第１の防振ゴムの硬度より大きな硬度を有する第２の防
振ゴムとからなることを特徴とする防振ゴム装置。In a vibration isolating rubber device that is inserted between a device as a vibration isolator and a mounting frame for mounting this device and suppresses vibration transmission mainly in the vertical direction in a frequency range of a predetermined value or higher, the vibration isolating rubber A first anti-vibration rubber whose one end is connected to the mounting frame and has a hardness such that the transmissibility of vertical vibration in the frequency range is equal to or less than a predetermined value, and the first anti-vibration rubber and the equipment. and a second vibration isolator having a hardness greater than that of the first vibration isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6881388A JPH01242847A (en) | 1988-03-22 | 1988-03-22 | Vibrationproof rubber device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6881388A JPH01242847A (en) | 1988-03-22 | 1988-03-22 | Vibrationproof rubber device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01242847A true JPH01242847A (en) | 1989-09-27 |
Family
ID=13384534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6881388A Pending JPH01242847A (en) | 1988-03-22 | 1988-03-22 | Vibrationproof rubber device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01242847A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0848186A3 (en) * | 1996-11-26 | 2001-03-21 | Trw Inc. | Isolator apparatus for multi-dimensional vibrational disturbances |
| JP2003313987A (en) * | 2002-04-19 | 2003-11-06 | Awi Mach:Kk | Hanger for ceiling |
| JP2016107898A (en) * | 2014-12-09 | 2016-06-20 | トヨタ自動車株式会社 | bracket |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5998351A (en) * | 1982-11-26 | 1984-06-06 | Sankyo Seiki Mfg Co Ltd | Stopping system of magnetic head driving stepping motor of magnetic disk device |
-
1988
- 1988-03-22 JP JP6881388A patent/JPH01242847A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5998351A (en) * | 1982-11-26 | 1984-06-06 | Sankyo Seiki Mfg Co Ltd | Stopping system of magnetic head driving stepping motor of magnetic disk device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0848186A3 (en) * | 1996-11-26 | 2001-03-21 | Trw Inc. | Isolator apparatus for multi-dimensional vibrational disturbances |
| JP2003313987A (en) * | 2002-04-19 | 2003-11-06 | Awi Mach:Kk | Hanger for ceiling |
| JP2016107898A (en) * | 2014-12-09 | 2016-06-20 | トヨタ自動車株式会社 | bracket |
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