Anti-collision beam, automobile door and automobile

The anti-collision beam comprises an aluminum alloy pipe and a carbon fiber plate, the aluminum alloy pipe is provided with a first end and a second end which are opposite to each other, and a fixing structure is arranged at the position, close to the first end, of the pipe wall of the aluminum alloy pipe; the carbon fiber plate is arranged at the position, close to the first end, in the aluminum alloy pipe, and at least one end of the carbon fiber plate is fixed by the fixing structure so as to support the pipe wall of the aluminum alloy pipe. The utility model aims to provide the sectional type light-weight anti-collision beam with deformation resistance and high energy absorption. 本实用新型公开一种防撞梁、车门以及汽车，其中，所述防撞梁包括铝合金管以及碳纤维板，所述铝合金管具有相对的第一端以及第二端，且在其管壁靠近所述第一端的位置设置有固定结构；所述碳纤维板置于所述铝合金管内靠近所述第一端的位置，且其至少一端被所述固定结构固定，以支撑所述铝合金管的管壁。本实用新型旨在提供一种分段式抗变形、高吸能的轻量化防撞梁。