JPH03130747U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の第一の実施例に係る衝撃吸収
バンパ用シヨツクアブソーバを示す断面図、第２
図はその要部図、第３図は第一の実施例に係る拡
大手段の変形例を示す要部図、第４図は第一の実
施例に係る衝撃吸収バンパ用シヨツクアブソーバ
の作用を示す第２図相当図、第５図は実施例に係
る衝撃吸収バンパ用シヨツクアブソーバ特性を示
すグラフ、第６図は本考案の第二の実施例に係る
衝撃吸収バンパ用シヨツクアブソーバを示す要部
断面図、第７図は第二の実施例に係る衝撃吸収バ
ンパ用シヨツクアブソーバの作用を示す第６図相
当図、第８図は従来の衝撃吸収バンパ用シヨツク
アブソーバ一例を示す断面図、第９図はその特性
を示すグラフである。 Ｂ……バンパ、１……ピストン、２……シリン
ダ、６……底壁、７……連通口、８……ピン、１
０……拡大手段、１１……カラー、２０……拡大
手段、２１……ピン、Ｃ，Ｃ１，Ｃ２……オリフ
イス。 1 is a sectional view showing a shock absorber for a shock absorbing bumper according to a first embodiment of the present invention; FIG.
Figure 3 is a diagram showing the main parts thereof, Figure 3 is a diagram showing the main parts of a modification of the enlarging means according to the first embodiment, and Figure 4 shows the action of the shock absorber for a shock absorbing bumper according to the first embodiment. FIG. 2 is a diagram corresponding to FIG. 5, a graph showing characteristics of a shock absorber for a shock absorbing bumper according to an embodiment, and FIG. 6 is a cross section of a main part showing a shock absorber for a shock absorbing bumper according to a second embodiment of the present invention. 7 is a view corresponding to FIG. 6 showing the action of the shock absorber for a shock absorbing bumper according to the second embodiment, FIG. 8 is a sectional view showing an example of a conventional shock absorber for a shock absorbing bumper, and FIG. 9 is a view corresponding to FIG. is a graph showing its characteristics. B... Bumper, 1... Piston, 2... Cylinder, 6... Bottom wall, 7... Communication port, 8... Pin, 1
0... Enlargement means, 11... Color, 20... Enlargement means, 21... Pin, C, C1, C2... Orifice.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 先端部にバンパが取付けられる中空状のピスト
ンを、車体に取付けられオイルが充填されるシリ
ンダに進退動可能に挿入保持し、該ピストンの底
壁にシリンダと連通する連通口を開設し、シリン
ダには該連通口に挿通されるピンを設け、上記連
通口とピンとの間隙によつてオリフイスを形成し
、バンパの衝突時に、ピストンの底壁によつてオ
イルを押圧して反力を生じせしめ、この反力によ
つてピストンを受けるとともに、シリンダ内のオ
イルをオリフイスを通してピストン側に流入させ
てピストンを退出させつつ、衝撃を吸収するよう
にした衝撃吸収バンパ用シヨツクアブソーバにお
いて、上記反力の大きさに応じて、オリフイスの
間隙を拡大する拡大手段を設けたことを特徴とす
る衝撃吸収バンパ用シヨツクアブソーバ。 A hollow piston with a bumper attached to its tip is inserted and held in a cylinder that is attached to the car body and is filled with oil so that it can move forward and backward, and a communication port is opened in the bottom wall of the piston to communicate with the cylinder. is provided with a pin inserted through the communication port, the gap between the communication port and the pin forms an orifice, and when the bumper collides, the oil is pressed by the bottom wall of the piston to generate a reaction force, In a shock absorber for a shock absorbing bumper, the shock is absorbed by the piston by this reaction force, and the oil in the cylinder flows into the piston side through an orifice to cause the piston to withdraw, absorbing the impact. A shock absorber for a shock absorbing bumper, characterized in that it is provided with an enlargement means for enlarging the gap between the orifices according to the size of the orifice.