JPS61215827A - Vibration preventive device - Google Patents
Vibration preventive deviceInfo
- Publication number
- JPS61215827A JPS61215827A JP5460785A JP5460785A JPS61215827A JP S61215827 A JPS61215827 A JP S61215827A JP 5460785 A JP5460785 A JP 5460785A JP 5460785 A JP5460785 A JP 5460785A JP S61215827 A JPS61215827 A JP S61215827A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- slope
- spring constant
- rubber
- vibration isolating
- 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
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
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
- F16F1/422—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing the stressing resulting in flexion of the spring
-
- 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
- F16F2236/00—Mode of stressing of basic spring or damper elements or devices incorporating such elements
- F16F2236/02—Mode of stressing of basic spring or damper elements or devices incorporating such elements the stressing resulting in flexion of the spring
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、密閉形圧縮機などの防振ゴムに係シ、特に、
防振ゴムの上下方向に作用する振動に対して好適な防振
装置に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to vibration isolating rubber for hermetic compressors and the like, and in particular,
The present invention relates to a vibration isolating device suitable for vibrations acting in the vertical direction on vibration isolating rubber.
従来の密閉形圧縮機などの振動体の支持に用いられてい
る防振装置は、実公昭５７−５５７２０号に記載のよう
に１円筒状防振ゴムの外周に設けた溝に振動体の支持板
を嵌合し、支持板の位置する防振ゴムの内面と防振ゴム
を貫通する固定ピンとの間隙を大きくすることＫよシ、
横方向の振動に対してゴムの曲げで受けるので横方向の
ばね定数を小さくすることができるという構造になって
いた。A vibration isolator used to support a vibrating body in a conventional hermetic compressor, etc., supports the vibrating body in a groove provided on the outer periphery of a cylindrical vibration isolating rubber, as described in Japanese Utility Model Publication No. 57-55720. When fitting the plates, increase the gap between the inner surface of the vibration isolating rubber where the support plate is located and the fixing pin that passes through the vibration isolating rubber.
The structure allows the horizontal spring constant to be reduced because the rubber bends to absorb horizontal vibrations.
しかしながら、図４に示すような従来の防振ゴム構造で
は、横方向のばね定数が小さいので、水平方向の振動に
対しては有効な防振特性を有するが、上下方向の振動に
対しては、防振ゴムの圧縮方向に働くのでばね定数が大
きいため、有効な防振特性を有するものになっていなか
った。従来の構造において上下方向のばね定数を小さく
するためには６円筒部の肉厚を薄くしなければならない
。However, the conventional anti-vibration rubber structure shown in Fig. 4 has a small spring constant in the lateral direction, so it has effective anti-vibration characteristics against vibrations in the horizontal direction, but it has anti-vibration characteristics against vibrations in the vertical direction. Since the spring constant acts in the compression direction of the anti-vibration rubber, it does not have effective anti-vibration properties. In the conventional structure, in order to reduce the spring constant in the vertical direction, the wall thickness of the six cylindrical parts must be made thinner.
しかし、単に薄くしたのでは、大きな衝撃力が加わった
ときに挫屈を生じる。一度、挫屈を生ずると復元力がな
いためにそのままの変形状態が保たれ、全く防振効果が
なくなってしまうという欠点を有していた。However, simply making it thinner will result in buckling when a large impact force is applied. Once buckling occurs, the deformed state is maintained due to the lack of restoring force, resulting in a complete loss of vibration damping effect.
本発明の目的は、上述の従来の欠点に鑑み、上下方向の
振動に対して充分な防振効果を発揮する防振装置を提供
することにある。SUMMARY OF THE INVENTION In view of the above-mentioned conventional drawbacks, an object of the present invention is to provide a vibration isolating device that exhibits a sufficient vibration isolating effect against vibrations in the vertical direction.
本発明の防振装置は、防振ゴムの胴部に傾斜面を設け、
上下方向の振動に対して傾斜面部の曲げ変形で受けるよ
うにしたものであり、上下方向のばね定数が大巾に小さ
くできるものである。The vibration isolator of the present invention provides an inclined surface on the body of the vibration isolator,
The vibration in the vertical direction is received by bending deformation of the inclined surface portion, and the spring constant in the vertical direction can be greatly reduced.
以下、本発明の一実施例を第１図および＠２図により説
明する。１け防振ゴムであり、内部を中９に形成しであ
る。２け、支持板であり、振動体（図中省略）に連結し
である。３は、設置台であシ、振動体を設置するベース
、または床等を示す。Hereinafter, one embodiment of the present invention will be explained with reference to FIG. 1 and @2. It is a one-piece anti-vibration rubber with a 9-inch inside. Number 2 is a support plate, which is connected to a vibrating body (not shown in the figure). 3 indicates an installation stand, a base on which the vibrating body is installed, a floor, or the like.
４け、支持ピンであシ、設置台３に固着しである。It is secured to the installation stand 3 with four support pins.
５は、ナツトであシ、支持ピン４の頭部に嵌入しである
。６は、絞り部で防振ゴム１に設けてあシ、支持板２を
嵌合載置する。７け、胴部であ）、主として支持板２を
介して振動体を支えるため上下方向の剛性が大きい部分
である。８は、底部であシ、防振装置１が固定台３に着
座する部分である。5 is a nut, which is fitted into the head of the support pin 4. Reference numeral 6 denotes a constricted portion provided on the vibration isolating rubber 1 to fit and place the support plate 2 thereon. 7), which is the body part), mainly supports the vibrating body through the support plate 2, so it is a part that has high rigidity in the vertical direction. Reference numeral 8 denotes a bottom part where the vibration isolator 1 is seated on the fixed base 3.
９は、傾斜面でアシ、胴部７の下方で内側に向ってテー
パ状に傾斜している。Ｈは傾斜面９の外縁における開き
の高さを示すものであシ、おおむねＨだけ傾斜面９け、
下方に撓むことができる。１０は上穴、１１は下穴であ
シ、支持ピン４が貫通する穴である。Reference numeral 9 is an inclined surface that is tapered inward below the body 7. H indicates the height of the opening at the outer edge of the slope 9, and approximately H is the height of the slope 9.
Can be bent downward. 10 is an upper hole, 11 is a lower hole, and is a hole through which the support pin 4 passes.
このような本発明のごとき構造の防振装置では、上下方
向の荷重に対して、胴部７の圧縮変形に比べて傾斜面９
の曲げＫよる変形の方が軟かいため、傾斜面９が底部已
に向って第２図に示すごとき変形ヲする。傾斜面９が高
さＨ以上（底部８に密着）の変形状態になると胴部７の
圧縮変形が始″！シ、急激に硬くなる。In the vibration isolating device having such a structure as in the present invention, the slope 9 is more compressive than the body 7 due to the load in the vertical direction.
Since the deformation caused by bending K is softer, the inclined surface 9 deforms toward the bottom as shown in FIG. When the inclined surface 9 is deformed to a height H or more (in close contact with the bottom part 8), the body part 7 begins to be compressed and becomes hard.
たわみ−荷重特性で上述の関係を定性的に表わすと第３
図の実線のごとくなる。破線は従来構造における特性で
あシ、上下方向の荷重に対しては圧縮変形のみで受ける
ために傾斜（ばね定数）が大きい。それに対し、本発明
の防振ゴムは、たわみ１ｉＨ４では、主として傾斜面９
の変形によるので特性の傾斜（はね定数）が小さい。Ｈ
以上になると胴部７の変形が支配的になるので破線（従
来構造）Ｋ汰は等しい傾ｆｆｒ（はね定数）を有する。Qualitatively expressing the above relationship in terms of deflection-load characteristics, the third
It will look like the solid line in the figure. The broken line is a characteristic of the conventional structure, and the slope (spring constant) is large because the load in the vertical direction is supported only by compressive deformation. In contrast, the anti-vibration rubber of the present invention has a deflection of 1iH4, mainly on the inclined surface 9.
The slope of the characteristic (spring constant) is small because it is due to the deformation of . H
If this is the case, the deformation of the body 7 becomes dominant, so that the dashed line (conventional structure) K has an equal slope ffr (spring constant).
従って、振動体の自重（Ｎｏ）が作用したときのたわみ
Ｈａ（静荷重のたわみ）をＨより若干小さく設定してお
けば、傾斜面９のたわみ領域内で振動体を支持すること
になジ、小さなばね定数で使用していることになる。ば
ね定数が小さくなれば一般に振動体の変位は、次式で示
されるごとく小さいものとなる。（減衰は０とする）
？
Ｘ＝ □
ｇ Ｋ −Ｗｏω２
ここで、Ｘ・・・振動変位、Ｆ・・・加振力、Ｋ・・・
ばね定数、ＷＯ・・・振動体の重量、ω・・・角振動数
、ｇ・・・重力の加速度である。Therefore, if the deflection Ha (deflection due to static load) when the vibrating body's own weight (No) acts is set slightly smaller than H, the vibrating body can be supported within the deflection area of the inclined surface 9. , it is used with a small spring constant. Generally, as the spring constant becomes smaller, the displacement of the vibrating body becomes smaller as shown by the following equation. (Attenuation is assumed to be 0)? X= □ g K −Woω2 where, X...vibration displacement, F...excitation force, K...
Spring constant, WO: weight of the vibrating body, ω: angular frequency, g: acceleration of gravity.
更に１本発明の防振ゴムでは、大きな衝撃が加わると、
傾斜面９が底部８に密着し、ばね定数の大きい胴部７の
圧縮変形で受けるので挫屈を起すことができない。Furthermore, when a large impact is applied to the anti-vibration rubber of the present invention,
Since the inclined surface 9 is in close contact with the bottom part 8 and is subjected to the compressive deformation of the body part 7 having a large spring constant, buckling cannot occur.
尚、傾斜面９け、胴部７の下部で内側に傾斜するものに
限るものではなく１首部６と底部８の間において、胴部
７から外側忙張）出した傾斜面９を設けても上述の特性
及び効果を有するものである。Incidentally, the 9 sloped surfaces are not limited to those that slope inward at the lower part of the body 7, but a slope 9 extending outward from the body 7 between the neck 6 and the bottom 8 may also be provided. It has the above-mentioned characteristics and effects.
オた。傾斜面９を複数個連らねれば、更にばね定数が小
さくできることは言うまでもない。Ota. It goes without saying that the spring constant can be further reduced by arranging a plurality of inclined surfaces 9.
以上、説明のごとく本発明の防振装置によれば防振ゴム
に設けたしぼシ部の曲げ変形を活用することによシ、上
下方向のばね定数を大巾に小さくでき、振動体の防振効
果が大なるものである。As explained above, according to the vibration isolating device of the present invention, by utilizing the bending deformation of the wrinkled portion provided on the vibration isolating rubber, the spring constant in the vertical direction can be greatly reduced. This has a great shaking effect.
第１図は１本発明の防振装置の側断面図、第２図は１本
発明の防振装置の一実施例を示す側断面図、第３図は、
従来の防振装置と本発明の防振装置の特性を示すたわみ
一荷重特性図、第４図は、従来の防振装置の構造を示す
側断面図。FIG. 1 is a side sectional view of a vibration isolator according to the present invention, FIG. 2 is a side sectional view showing an embodiment of the vibration isolator according to the present invention, and FIG.
A deflection-load characteristic diagram showing the characteristics of a conventional vibration isolator and the vibration isolator of the present invention, and FIG. 4 is a side sectional view showing the structure of the conventional vibration isolator.
Claims (1)
記防振ゴムの絞り部に設けられ支持板とからなり、上記
防振ゴムの絞り部と底部との間に傾斜面を設けたことを
特徴とする防振装置。It consists of a base, an internally hollow vibration isolating rubber through which a support pin passes, and a support plate provided at the constricted part of the vibration isolating rubber, and an inclined surface is provided between the constricted part and the bottom of the vibration isolating rubber. A vibration isolating device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5460785A JPS61215827A (en) | 1985-03-20 | 1985-03-20 | Vibration preventive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5460785A JPS61215827A (en) | 1985-03-20 | 1985-03-20 | Vibration preventive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61215827A true JPS61215827A (en) | 1986-09-25 |
Family
ID=12975421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5460785A Pending JPS61215827A (en) | 1985-03-20 | 1985-03-20 | Vibration preventive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61215827A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1265022A2 (en) * | 2001-06-05 | 2002-12-11 | Motoren Ventilatoren Landshut GmbH | Suspension for mounting a machine on a base |
| JP2007107856A (en) * | 2005-10-17 | 2007-04-26 | Matsushita Electric Ind Co Ltd | Refrigerator, compressor, and vibration-proofing device of compressor |
-
1985
- 1985-03-20 JP JP5460785A patent/JPS61215827A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1265022A2 (en) * | 2001-06-05 | 2002-12-11 | Motoren Ventilatoren Landshut GmbH | Suspension for mounting a machine on a base |
| EP1265022A3 (en) * | 2001-06-05 | 2004-10-06 | ebm-papst Landshut GmbH | Suspension for mounting a machine on a base |
| JP2007107856A (en) * | 2005-10-17 | 2007-04-26 | Matsushita Electric Ind Co Ltd | Refrigerator, compressor, and vibration-proofing device of compressor |
| JP4706427B2 (en) * | 2005-10-17 | 2011-06-22 | パナソニック株式会社 | Refrigerator, compressor and vibration isolator for compressor |
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