To disclose a rotary damper in which an attenuation force is changed depending on a direction.SOLUTION: A rotary damper has a damper housing (12) which is filled with fluid, and a piston (20) accommodated in the damper housing (12) with a rotating shaft (R) as a center so as to be rotatable in a first direction (B1) and a second direction (B2) which is reverse to the first direction. The piston (20) has a flow cross section at which the fluid can flow, a blocking device (30) is arranged in the piston (20), and an attenuation force can be suppressed at the rotation of the piston (20) to the first direction (B1) compared with the case of the rotation of the piston (20) to the second direction (B2) by reducing at least one flow cross section area of an opening (32).SELECTED DRAWING: Figure 3

    【課題】方向によって減衰力が変化する回転ダンパを開示する。【解決手段】流体を充填したダンパ・ハウジング(12)と、該ダンパ・ハウジング(12)内に回転軸(R)を中心にして第1の方向(B1)及び反対向きの第2の方向(B2)に回転自在に収容されたピストン(20)と、を有し、ピストン(20)は、流体が流れることが出来るフロー断面を有し、ブロッキング装置(30)がピストン(20)に配置され、前記ピストン(20)の第1の方向(B1)への回転時には、前記ピストン(20)の第2の方向(B2)への回転時に比べて、前記開口(32)の少なくとも一つのフロー断面積を減少させて、減衰力を抑制することができる回転ダンパを提供する。【選択図】図3


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    Title :

    ROTARY DAMPER AND SEAT DEVICE


    Additional title:

    回転ダンパ及び座席装置


    Contributors:

    Publication date :

    2019-04-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16F SPRINGS , Federn / A47C Stühle , CHAIRS / B60N SEATS SPECIALLY ADAPTED FOR VEHICLES , Sitze besonders für Fahrzeuge ausgebildet



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