A go up underarm transmission portion for nucleic acid extraction instrument is last

The utility model provides a go up underarm transmission portion for nucleic acid extraction instrument is last, transmission portion includes at least: first actuating lever, second actuating lever,third actuating lever and fourth actuating lever, first actuating lever, second actuating lever, third actuating lever and fourth actuating lever enclose the quadrangle of rule, all set up the holderon inboard relative with the third actuating lever face of first actuating lever. The utility model discloses can install on nucleic acid extraction instrument for the motion of arm is realized to drive nucleic acid extraction instrument's arm. This device simple structure, the operation is stable. 本实用新型提供种用于核酸提取仪上的上下臂传动部，所述传动部至少包括：第驱动杆、第二驱动杆、第三驱动杆、以及第四驱动杆，所述第驱动杆、第二驱动杆、第三驱动杆、以及第四驱动杆围成规则的四边形，所述第驱动杆的内侧和第三驱动杆相对的面上都设置夹持件。本实用新型可以安装在核酸提取仪上，用于驱动核酸提取仪的机械臂，实现机械臂的运动。本装置结构简单，运行稳定。