Improved electric push rod

The utility model discloses an improved electric push rod which comprises a motor, a gear box, a worm gear and a screw rod, the motor is fixedly connected with the gear box, the worm gear is arranged in the gear box, the output end of the motor is provided with a worm extending into the gear box, the worm is meshed with the worm gear, the worm gear is arranged in a hollow mode, and the worm gear is sleeved outside the screw rod. And the inner wall of the worm gear is provided with an internal thread matched with the screw rod. The device is simple and reasonable in structure, convenient to install, low in manufacturing cost and stable and reliable in working performance. 本实用新型公开的一种改进型电动推杆，包括电机、齿轮箱、蜗轮及螺杆，电机与齿轮箱固定连接，蜗轮设置于齿轮箱内，电机的输出端设置有伸入于齿轮箱内的蜗杆，蜗杆与蜗轮啮合，蜗轮呈中空设置，蜗轮套接于螺杆的外部，蜗轮的内壁设置有与螺杆相适配的内螺纹。本实用新型结构简单合理，安装方便，制造成本较低，工作性能稳定可靠。