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公开(公告)号：EP4112970A1
公开(公告)日：2023-01-04
申请号：EP20937391.9
申请日：2020-09-30
发明人： DING, Xingwu , BU, Jiling , CHENG, Haitao , LIU, Wensong , ZOU, Bo , LUO, Jun , WANG, Feng , ZOU, Jicao , XIA, Zhangyang
摘要： Disclosed herewith a hydraulic composite bushing (100, 200) and a sealing method for same. The hydraulic composite bushing (100, 200) comprises: a core shaft (10, 210), with a continuously spiral fluid channel groove (11, 211) formed on an outer surface thereof; a rubber member (20, 220), arranged around the core shaft (10, 210), and having two recesses formed radially outside of the fluid channel groove (11, 211) and radially opposite to each other; a support ring (30, 230) arranged around the rubber member (20, 220), covering the fluid channel groove (11, 211) to form hydraulic chambers (40, 240) for accommodating hydraulic fluid; an outer cover (50, 250) pressing on the support ring (30, 230) from a radially outer side thereof; and a sealing device (80) provided at each end of a fluid channel tube (60, 260) arranged within the fluid channel groove (11, 211). Two ends of the fluid channel tube (60, 260) pass through the rubber member (20, 220) radially to extend into two hydraulic chambers (40, 240) respectively, so that said two hydraulic chambers (40, 240) are in communication with each other through the fluid channel tube (60, 260). One end of the sealing device (80) is arranged inside the flow channel groove (11, 211) and the other end thereof passes through the rubber member (20, 220) to extend into the hydraulic chambers, thus forming a seal between the flow channel pipe (60, 260) and the flow channel groove (11, 211).
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2.发明公开
公开(公告)号：EP4160046A1
公开(公告)日：2023-04-05
申请号：EP20937798.5
申请日：2020-09-30
发明人： DING, Xingwu , BU, Jiling , CHENG, Haitao , ZOU, Bo , XIA, Zhangyang , ZOU, Jicao
摘要： Disclosed herewith a hydraulic composite bushing (100), a flow channel (70) for same, and a method for forming the flow channel (70). The hydraulic composite bushing comprises: a core shaft (10); a rubber member (20), arranged on an outer peripheral surface of the core shaft (10) and provided with two recesses diametrically opposite to each other; two support rings (30) arranged around the rubber member and spaced apart from each other; and an outer casing (40) press-fitted on the support rings (30) from a radially outer side thereof through interference fit. The outer casing (40) covers the recesses to form two hydraulic chambers (21) for accommodating hydraulic fluid between the rubber member (20) and the outer casing (40), and the support ring (30) is provided with a flow channel (70) for the hydraulic fluid, so that two hydraulic chambers (21) are in communication with each other via the flow channel (70). A sealing device is provided at a connection between the outer casing and each of the recesses to seal each hydraulic chamber (21). The hydraulic composite bushing (100) can effectively improve the overall sealing effect of the hydraulic chambers (21), and remarkably improve the performance of stiffness adjustment of the hydraulic composite bushing (100).
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