The invention discloses a mechanical recirculating ball type electric power steering device, and the device is mainly composed of a direct-current brushless motor, a controller, a sensor, a worm and gear pair, a steering screw nut pair, a rack sector gear pair and a shell. A steering screw nut pair of the key transmission mechanism adopts an end face circulation mode and is composed of a steeringscrew, a steering nut, a reverser, a check ring and a steel ball, and an inner roller path of the steering nut and an outer roller path of the steering screw are combined to form a working roller pathof the steel ball. Commutators are embedded in the two ends of the steering nut respectively and axially limited through check rings. According to the structure, the bearing capacity of the steeringscrew nut pair is obviously improved, loads are evenly distributed, the structure is stable and firm, the weak link of reversing impact does not exist, the space structure is compact, operation is flexible and smooth, the machining manufacturability is good, and the better use prospect is achieved.
本发明公开了一种机械循环球式电动助力转向装置,主要由直流无刷电机、控制器、传感器、蜗轮蜗杆副、转向螺杆螺母副、齿条扇齿副和壳体组成。其关键传动机构的转向螺杆螺母副采用端面循环的方式,由转向螺杆、转向螺母、换向器、挡圈和钢球组成,转向螺母内滚道与转向螺杆的外滚道相合形成钢球的工作滚道。在转向螺母的两端分别镶嵌有换向器,并用挡圈轴向限位。此结构转向螺杆螺母副承载能力明显加大,且载荷分布均匀,结构稳固牢靠,不存在受换向冲击的薄弱环节,空间结构紧凑,运转灵活顺畅,加工工艺性较好,有更好的使用前景。
Mechanical recirculating ball type electric power steering device
机械循环球式电动助力转向装置
05.02.2021
Patent
Elektronische Ressource
Chinesisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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