The invention relates to a pulsation reduction device provided in a hydraulic brake system of a vehicle. A pulsation reduction device is provided with: a first chamber (A) to which brake fluid pressure is input from a brake fluid pressure circuit (2); a second chamber (B) that outputs brake fluid pressure to the brake fluid pressure circuit (2); and a connection part (80a) that connects the first chamber (A) and the second chamber (B). The connection part (80a) is provided with: a first valve body (86) that moves to a non-connection position at which the first valve body (86) is seated on the first valve seat (85b) and does not connect the first chamber (A) and the second chamber (B), and to a connection position at which the first valve body (86) is seated away from the first valve seat (85b) and connects the first chamber (A) and the second chamber (B); and a biasing member that biases the first valve body (86) toward the first valve seat (85b). The force applying component comprises a second force applying component (89) and a third force applying component (90) different from the second force applying component (89); the second biasing member (89) has a hysteresis characteristic in which the restoring force (p) during the loading process and the restoring force (p) during the unloading process are different when the same displacement (s) during the loading process and the unloading process. The third urging member (90) has a characteristic in which the restoring force (p) during the unloading process when the third urging member (90) has the same displacement (s) as the second urging member (89) is greater than the restoring force during the unloading process when the third urging member (90) has the same displacement (s) as the second urging member (89).
本发明涉及设置在车辆的液压制动系统的脉动降低装置。脉动降低装置具备:第1室(A),被从制动液压回路(2)输入制动液压;第2室(B),向制动液压回路(2)输出制动液压;以及连接部(80a),将第1室(A)与第2室(B)连接;该连接部(80a)具备:第1阀体(86),移动到就座于第1阀座(85b)而不将第1室(A)与第2室(B)连接的非连接位置和从第1阀座(85b)离座而将第1室(A)与第2室(B)连接的连接位置;以及施力部件,对该第1阀体(86)向第1阀座(85b)侧施力;施力部件包括第2施力部件(89)以及与该第2施力部件(89)不同的第3施力部件(90);第2施力部件(89)具有当在负载过程和卸载过程中为相同的变位(s)时该负载过程中的复原力(p)和该卸载过程中的复原力(p)成为不同大小的滞后特性;第3施力部件(90)具有为与第2施力部件(89)相同的变位(s)时的卸载过程中的复原力(p)比为该相同的变位(s)时的第2施力部件(89)的卸载过程中的复原力大的特性。
Pulsation reduction device
脉动降低装置
2024-01-12
Patent
Elektronische Ressource
Chinesisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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