Electronic brake actuator

The utility model discloses an electronic brake actuator. Upper shell, lower shell and planet carrier, duplex gear II, the output shaft is arranged on the planet carrier; the center pin is arranged onthe upper shell; the first elastic body is arranged between the planet carrier and the lower shell and is used for applying elastic acting force to the planet carrier; and/or the second elastic bodyis arranged between the upper shell and the duplicate gear II and is used for applying elastic acting force to the duplicate gear II. According to the electronic brake actuator, the elastic body is arranged to eliminate or reduce gaps among a plurality of parts on the planet gear main shaft, and therefore abnormal sounds generated by axial impact can be eliminated. 本实用新型公开了一种电子制动执行器，包括上壳体、下壳体、行星架、双联齿轮Ⅱ、设置于行星架上的输出轴、设置于上壳体上的中心销以及设置于所述行星架与所述下壳体之间且用于对行星架施加弹性作用力的第一弹性体和/或设置于所述上壳体与所述双联齿轮Ⅱ之间且用于对双联齿轮Ⅱ施加弹性作用力的第二弹性体。本实用新型电子制动执行器，通过设置弹性体用于消除或减小行星齿轮主轴上众多零部件之间的间隙，从而可以消除因轴向冲击产生的异响。