| 摘要 |
<p>A damper valve (18) comprises a casing (21) having a first chamber (C1) and a second chamber (C2) that are separated from each other by a partition wall (23), a supply path (F1) for supplying to the second chamber (C2) hydraulic oil in the first chamber (C1) through a check valve (19), and a return path (F2) for returning to the first chamber (C1) hydraulic oil in the second chamber (C2). A valve plate (25; 30; 31) that is elastically deformable is urged toward a valve seat (26; 26A; 26B) provided on the partition wall (23) . The supply path (F1) comprises a penetration path (23c) that penetrates the partition wall (23) along a predetermined axis (23e) . The return path (F2) comprises a communication path (23a) that communicates the first chamber (C1) and the second chamber (C2) with each other by penetrating the partition wall (23). The communication path (23a) has an opening (23b) formed on the valve seat (26; 26A; 26B). Either of the valve seat (26; 26A; 26B) or the valve plate (25; 30; 31) is formed into a conical tapered shape centered around the axis (23e). When either of an outer edge (25a; 30a; 31a) or an inner edge (25b; 30b; 31b) of the valve plate (25; 30; 31) is abutted against the valve seat (26; 26A; 26B), an annular oil chamber (70) is formed between the valve seat (26; 26A; 26B) and the valve plate (25; 30; 31), and the opening (23b) of the communication path (23a) communicates with the annular oil chamber (70).</p> |
