Auxiliary device and vehicle

The invention discloses an auxiliary device and a vehicle. The auxiliary device comprises a base body with a containing cavity, an auxiliary mechanism, a cover body and at least one power mechanism; the containing cavity is provided with an opening end; the auxiliary mechanism is arranged in the containing cavity; the cover body is movably arranged at the opening end and can move between an opening position and a closing position relative to the opening end, and when the cover body moves from the closing position to the opening position, the cover body is completely contained in the containing cavity; the at least one power mechanism is arranged in the containing cavity, and one power mechanism is used for driving the auxiliary mechanism to stretch out and retract from the opening end. The auxiliary device is simple in structure, and can achieve sealing more easily. 本说明书公开了一种辅助装置以及车辆，辅助装置包括：具有容置腔的基体，所述容置腔具有开口端；辅助机构，设置在所述容置腔中；可活动地设置在所述开口端的盖体，可相对所述开口端在打开位置和闭合位置之间运动，所述盖体从闭合位置朝向打开位置运动时，所述盖体全部收容于所述容置腔中；设置在所述容置腔中的至