Multi-joint type active deformation bionic fin

The utility model discloses a multi-joint type active deformation bionic fin which comprises a bionic connecting plate, a group of fin joints and a driving device, the fin joints are installed on a rotating shaft through driving joints, the rotating shaft is installed on the bionic connecting plate, the number of the fin joints is at least three, and the fin joints are connected through flexible connecting pieces. One of the fin joints is driven by the driving device to rotate in a reciprocating mode, the fish fin is divided into the multiple independent joints which are connected through the connecting pieces, the integrity of the fish fin is guaranteed, meanwhile, the movement requirements of bending, twisting and swinging of the fish fin can be met, the requirement of the bionic fish fin for the material performance is lowered, cost is lowered, and production efficiency is improved. 本实用新型公开了一种多关节式主动变形仿生鱼鳍,包括仿生连接板、一组鳍关节和驱动装置，鳍关节通过驱动关节安装在一个转轴上，转轴安装于仿生连接板，鳍关节包括至少三个，每个鳍关节之间通过柔性连接件相连，鳍关节中的一个在驱动装置的带动下往复转动，通过把鱼鳍拆