The invention relates to an electric steering gear with a roller screw assembly. Comprising a shell, the two ends of the shell are detachably connected with a bottom cover and an upper cover respectively, bearings are installed in the bottom cover and the upper cover, and the two ends of a roller lead screw assembly are installed between the bottom cover and the upper cover through the bearings. The roller lead screw assembly is composed of a lead screw, a nut and a flat key, the nut is in threaded connection with the lead screw, a key groove is formed in the periphery of the nut, the flat key is arranged in the key groove, the roller lead screw assembly is inserted into an inner hole of the rack piston, the outer portion of the flat key is arranged in the key groove of the rack piston, the lead screw is sleeved with the locking nut, and the locking nut is arranged in the inner hole of the rack piston. And the locking nut is in threaded and glue locking connection with the rack piston. And the rocker arm shaft is meshed with the rack piston. According to the invention, the structure is simple, the output torque is large, safety and reliability are realized, the manufacturability of part processing is strong, the assembly method is simple, the adaptability of vehicle selection and assembly is improved, and the requirements of different vehicle types are widely met.
本发明涉及一种带有滚柱丝杠总成的电动转向器。包括外壳,外壳两端分别与底盖和上盖通过可拆卸方式连接,所述底盖和上盖内装有轴承,所述滚柱丝杠总成两端通过轴承装在底盖和上盖之间。所述滚柱丝杠总成由丝杆、螺母和平键组成,所述丝杆上螺纹连接有螺母,螺母外周开有键槽,平键置于键槽内,所述滚柱丝杠总成插入齿条活塞内孔中,平键的外部置于齿条活塞的键槽内,锁紧螺母套在丝杆上,且置于齿条活塞内孔中,锁紧螺母与齿条活塞螺纹及胶水锁固连接。所述摇臂轴与齿条活塞啮合。本发明结构简单,输出扭矩大,安全可靠,零件加工的工艺性强,总成装配方法简单,提升了车辆选装的适应性,广泛的满足了不同车型的需求。
Electric steering gear with roller screw assembly
带有滚柱丝杠总成的电动转向器
2024-12-10
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
Input shaft and screw assembly of electric steering gear
European Patent Office | 2023
|Heavy-load electric steering gear lead screw support and bearing assembly
European Patent Office | 2023
|