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发明授权
CN105156520B 一种装有滚珠丝杠结构的电子刹车助力装置 有权

一种装有滚珠丝杠结构的电子刹车助力装置
摘要：
本发明涉及一种装有滚珠丝杠结构的电子刹车助力装置，所述的电机轴端部安装有小齿轮，小齿轮一侧安装有与其啮合的一级减速齿轮，一级减速齿轮的一侧安装有二级减速齿轮，二级减速齿轮与一级减速齿轮啮合，二级减速齿轮中部安装有轴向滑动的滚珠螺母，滚珠螺母外圈通过定位凸起与二级减速齿轮定位，所述的滚珠螺母内圈处安装有与滚珠螺母转动连接的滚珠螺杆，所述的滚珠螺杆的一端安装有顶杆，滚珠螺杆的另一端与主缸活塞的一端相连，主缸活塞的另一端插入安装在制动主缸内。本发明具有结构简单、生产成本低、能够有效的将电机的转动转化成螺杆的滑动等特点。
摘要（英）：

The invention relates to an electronic brake assistor with a ball screw structure. The end part of a motor shaft is provided with a pinion gear; one side of the pinion gear is provided with a primary reducing gear which meshes with the pinion gear; one side of the primary reducing gear is provided with a secondary reducing gear which meshes with the primary reducing gear; the middle part of the secondary reducing gear is provided with an axial-slide ball nut; the outer ring of the ball nut is positioned with the secondary reducing gear through a positioning bulge; the inner ring of the ball nut is provided with a ball screw connected with the ball nut rotatablely; one end of the ball screw is provided with a post rod, and the other end of the ball screw is connected with one end of a master cylinder piston; and the other end of the master cylinder piston is inserted in a brake master cylinder. The electronic brake assistor with a ball screw structure has the characteristics of simple structure, low production cost and the like, and can effectively convert the rotation of the motor into the slide of the screw.

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