The invention discloses a hydraulic bushing for vehicle body suspension. The hydraulic bushing comprises an upper soft cushion, the upper soft cushion is connected with the lower soft cushion in an up-down matching manner; the lower soft cushion comprises a first vulcanization part, a second vulcanization part and a third vulcanization part, the first vulcanization part, the second vulcanization part and the third vulcanization part are combined with one another, a first cavity, a second cavity and a runner communicating the first cavity with the second cavity are formed in the first vulcanization part, the second vulcanization part and the third vulcanization part, the first cavity and the second cavity are different in size, the first cavity serves as a working cavity and participates in stress, the second cavity stores liquid, and the third vulcanization part is used for storing liquid. And liquid forms positive pressure or negative pressure through the cavity I, so that the liquid flows in the cavity I, the cavity II and the flow channel. According to the invention, the cavity I, the cavity II and the flow channel are arranged, so that the suspension provided with the device provides high damping and high dynamic stiffness under the conditions of low frequency and large amplitude; and low damping and low dynamic stiffness are provided at high frequency and small amplitude, and good vibration isolation performance is provided, so that good NVH (Noise Vibration and Harshness) performance of the whole vehicle is obtained, and the NVH comfort of the whole vehicle is improved.
本发明公开了一种车身悬置用液压衬套,包括上软垫;下软垫,所述上软垫与所述下软垫上、下配合连接;所述下软垫包括硫化件一、硫化件二和硫化件三,所述硫化件一、硫化件二和硫化件三相互组合并在内部形成有腔体一、腔体二以及连通腔体一和腔体二的流道,腔体一和腔体二大小不一,腔体一为工作腔室参与受力,腔体二存储液体,液体通过所述腔体一形成正压或负压使液体流动于所述腔体一、所述腔体二以及所述流道之中。本发明通过设置的腔体一、腔体二以及流道,使装配有本装置的悬置在低频、大振幅时,提供高阻尼和高动刚度;在高频、小振幅时提供低阻尼、低动刚度,提供了很好地隔振性能,从而获得较好的整车NVH性能,提高了整车的NVH舒适性。
Hydraulic bushing for vehicle body suspension
一种车身悬置用液压衬套
24.01.2025
Patent
Elektronische Ressource
Chinesisch
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