CHECK VALVE OF PRESSURE BUFFER DEVICE

• Main Authors: SATO AKIKO, NOZAWA KENTA, SENO NAOKI
• Format: Patent
• Language: English; Japanese
• Published: 16.07.2015
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; SHOCK-ABSORBERS; SPRINGS; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

PROBLEM TO BE SOLVED: To provide a check valve of a pressure buffer device, by which the pressure buffer device can generate predetermined attenuation force.SOLUTION: A check valve includes: a bottom piece 41 which has a substantially columnar shape encapsulated into a damper, and has an outside flow passage 41a in which oil R circulates and which is formed in an axial direction, an inside seat face 41j formed inside an opening 41b of the outside flow passage 41a on an upper end face 41g in an axis-C direction and an outside seat face 41i formed outside the opening 41b of the outside flow passage 41a; and a valve plate 42 which is arranged between the inside seat face 41j and outside seat face 41j, and in which a slit 42e where the oil R circulates is formed from the outside flow passage 41a to a part opposed to the inside seat face 41j. 【課題】圧力緩衝装置のチェックバルブにおいて、圧力緩衝装置が所定の減衰力を発生することができるものとする。【解決手段】ダンパの内部に封入された概略円柱状の形状であり、オイルＲが流通する、軸方向に形成された外側流路４１ａ、軸Ｃ方向の上端面４１ｇにおける外側流路４１ａの開口４１ｂよりも内側に形成された内側座面４１ｊおよび外側流路４１ａの開口４１ｂよりも外側に形成された外側座面４１ｉを有するボトムピース４１と、内側座面４１ｊと外側座面４１ｉとの間に亘って配置され、外側流路４１ａから内側座面４１ｊに対向する部分にかけてオイルＲを流通させるスリット４２ｅが形成されたバルブプレート４２とを備える。【選択図】図８