bionic hand thumb

A kind of bionic hand thumb, by thumb top (1), in the middle part of thumb (2), thumb bottom (3), worm gear seat (4), rotating seat (5), rotating shaft (6), nylon cushion (7), worm gear (8), worm screw (9), motor contact (10), motor reducer (11) forms, it is characterized in that: described motor reducer (11) output shaft is connected with worm screw (9) by motor contact (10), worm gear (8) and thumb bottom (3), worm screw case is connected by worm-wheel shaft, motor reducer (11) drives worm screw (9) and worm gear (8) engagement, worm screw (9) is circled around worm-wheel shaft, thus drive thumb to rotate around worm-wheel shaft.This utility model, simple and reliable for structure, adjustable length, easy for installation, applicable not homochirality, the bionic hand thumb of lighter in weight.