The invention discloses a rotary valve type semi-integral steering gear, and the steering gear comprises a closed shell, a screw assembly arranged in the shell and a gear sector driven by the screw assembly to rotate; the screw assembly further comprises a piston dividing an inner cavity of the shell into a first cavity and a second cavity, and at least one reversing valve is arranged in the firstcavity. The reversing valve is driven by the screw assembly to reverse, and a first oil channel is formed in the piston, so that oil cavities in the two sides of the piston are connected. A second oil passage is formed in the reversing valve, so that oil cavities on two sides of the piston are connected with the oil return port. Channels for connecting the valve element with the oil cavities in the two sides of the piston are omitted, the oil channels are additionally formed in the piston to enable the oil cavities in the two sides of the piston to be connected, and the semi-integral steeringgear function is achieved; meanwhile, an oil channel is additionally formed in the valve element or the valve body, so the piston of the steering valve moves smoothly, the correction amount of a straight-line driving steering wheel of the vehicle is further reduced, the operation sensitivity is improved, and the vehicle driving comfort is improved.
本发明公开了一种转阀式半整体式转向器,包括密闭的壳体、设置于壳体内的螺杆总成、在螺杆总成的驱动下转动的齿扇,螺杆总成还包括将壳体内腔分隔成第一腔室和第二腔室的活塞,第一腔室内设置至少一个换向阀,换向阀在螺杆总成的驱动下进行换向,活塞上开设第一油道,使活塞两侧油腔相连;换向阀上开设第二油道,使活塞两侧油腔与回油口相连。本发明取消阀芯至活塞两侧油腔相连的通道,在活塞上增加油道使活塞两侧油腔相连,实现半整体转向器的功能;同时在阀芯或阀体上增加一油道,使转向阀活塞移动顺畅,进一步减小车辆直线行驶方向盘的修正量,提高操纵灵敏性,提高车辆驾驶舒适性。
Rotary valve type semi-integral steering gear
一种转阀式半整体式转向器
2020-11-03
Patent
Elektronische Ressource
Chinesisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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