The invention belongs to the technical field of automobile steering systems, and particularly relates to a worm and gear mechanism for improving friction abnormal sound of a C-EPS steering column. Theworm and gear mechanism comprises a worm gear, a worm and a shell, wherein a worm gear cavity and a worm cavity are formed in the shell, the worm gear and the worm are mounted in the worm gear cavityand the worm cavity respectively, the worm gear and the worm are engaged at the joint of the worm gear cavity and the worm cavity, and an arc-shaped oil storage guide groove is formed in the side wall of the joint of the worm gear cavity and the worm cavity on the inner side of the shell. According to the worm and gear mechanism, the existing problems are improved, the automatic grease compensation function is achieved through the Bernoulli effect, it is guaranteed that the grease amount at the meshing position is sufficient, and therefore mechanical impact abnormal sound noise generated in the working process of the electric steering column is eliminated, and the risk of abnormal sound fed back by the market can be reduced.
本发明属于汽车转向系统技术领域,具体涉及一种改善C‑EPS转向管柱摩擦异响的蜗轮蜗杆机构,包括涡轮、蜗杆和壳体,壳体内设有涡轮腔和蜗杆腔,涡轮和蜗杆分别安装在涡轮腔和蜗杆腔,并在涡轮腔和蜗杆腔的结合处齿合;所述壳体内侧涡轮腔和蜗杆腔结合处的侧壁上开设有弧形储油导向槽。本发明针对现有问题进行改进,利用伯努利效应实现油脂自动补偿功能,保证啮合处油脂量充足,由此达到消除电动转向管柱在工作过程中所发生的机械撞击异响噪音,能降低市场反馈异响的风险。
Worm and gear mechanism for improving friction abnormal sound of C-EPS steering column
改善C-EPS转向管柱摩擦异响的蜗轮蜗杆机构
2020-10-02
Patent
Electronic Resource
Chinese
Electric steering column worm and gear mechanism, electric steering system and vehicle
European Patent Office | 2021
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