JPH0431348U

JPH0431348U -

Info

Publication number: JPH0431348U
Application number: JP7348590U
Authority: JP
Priority date: 1990-07-10
Filing date: 1990-07-10
Publication date: 1992-03-13

Description

[Brief explanation of the drawing]

第１図は本考案に係る液封入式防振緩衝器の一
実施例を示す縦断面示正面図、第２図は従来の液
封入式防振緩衝器の一例を示す縦断面示正面図、
第３図は実験結果の１例を示す周波数と貯蔵バネ
定数との関係を示す図表である。１……内筒、｛２ａ……第１外筒、２ｂ……第
２外筒、２ｃ……第３外筒｝２……外筒、｛３ａ
……上部ゴム弾性体、３ｂ……壁部ゴム弾性体、
３ｃ……下部ゴム弾性体｝３……ゴム状弾性体、
４……弾性膜、５……液室、６……輪状の壁、６
′……板状体、７……狭搾部、７′……環状開口
、８……棚部、９……リング体、１０……シール
リング。 FIG. 1 is a vertical cross-sectional front view showing an example of a liquid-filled vibration isolator according to the present invention, and FIG. 2 is a vertical cross-sectional front view showing an example of a conventional liquid-filled vibration damper.
FIG. 3 is a chart showing the relationship between frequency and storage spring constant, showing one example of experimental results. 1... Inner cylinder, {2a... First outer cylinder, 2b... Second outer cylinder, 2c... Third outer cylinder} 2... Outer cylinder, {3a
...Top rubber elastic body, 3b...Wall rubber elastic body,
3c...Lower rubber elastic body}3...Rubber-like elastic body,
4... Elastic membrane, 5... Liquid chamber, 6... Annular wall, 6
'... Plate body, 7... Narrowed part, 7'... Annular opening, 8... Shelf part, 9... Ring body, 10... Seal ring.

補正平３．２．１実用新案登録請求の範囲を次のように補正する
。Amendment 3.2.1 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】内筒と、その外周に間隔をあけて同心的に囲繞
させた外筒、及びそれら両筒を全周に亘らせてつ
なぐゴム状弾性体とにより緩衝器の基体を形成し
てなり、上記ゴム状弾性体は、前記内、外両筒の
間で内部全周に液室となる中空部を備えると共に
該中空部内には狭搾部を形成する輪状の壁が配設
されており、該壁はその外周端が外筒内面に支持
され、狭搾部は、壁の内周と、内筒外周との間に
形成されてその高さＨと、すき間とが＞１mm
、かつ０．２＜／Ｈ＜０．７の範囲にあつて、
１００〜５００Hzでの貯蔵バネ定数の最小値が静
的バネ定数より小さくなることを特徴とする液封
入式防振緩衝器。[Scope of Claim for Utility Model Registration] A shock absorber is constructed by an inner cylinder, an outer cylinder concentrically surrounding the outer periphery of the inner cylinder at intervals, and a rubber-like elastic body connecting the two cylinders along the entire circumference. The rubber-like elastic body has a hollow part that becomes a liquid chamber around the entire inner circumference between the inner and outer cylinders, and a ring-shaped wall that forms a narrowed part in the hollow part. is disposed, the outer circumferential end of the wall is supported by the inner surface of the outer cylinder, and the narrowed part is formed between the inner circumference of the wall and the outer circumference of the inner cylinder, and the height H and the gap are is>1mm
, and in the range of 0.2</H<0.7,
1. A liquid-filled vibration damper characterized in that the minimum value of a storage spring constant at 100 to 500 Hz is smaller than a static spring constant.

Claims

[Scope of utility model registration request]

The base of the shock absorber is formed by an inner cylinder, an outer cylinder concentrically surrounding the outer periphery of the inner cylinder at intervals, and a rubber-like elastic body connecting these two cylinders over the entire circumference, and the above-mentioned The rubber-like elastic body is provided with a hollow part serving as a liquid chamber around the entire inner circumference between the inner and outer cylinders, and a ring-shaped wall forming a squeezed part is disposed inside the hollow part. The outer circumferential end of the wall is supported by the inner surface of the outer cylinder, and the narrowed part is formed between the inner circumference of the wall and the outer circumference of the inner cylinder, and the height H and the gap are >1 mm.
, and in the range of 0.2</H<0.7, 2
1. A liquid-filled vibration isolating shock absorber characterized in that a minimum value of a storage spring constant in a frequency range of 00 to 500 Hz is smaller than a static spring constant.