Labor-saving rotation flexible arm rod

The utility model discloses a labor-saving rotation flexible arm rod. The labor-saving rotation flexible arm rod comprises a flexible arm main body, a spring box, a base, a connection rod and a lifting rod, wherein a spring is arranged in the spring box; one end of the flexible arm rod main body is connected with a top cover; the other end of the flexible arm main body is connected with the upper end of the spring through two plane bearings; the lower end of the spring box is connected with the base through the connection rod; a blind hole is formed in the top of the connection rod; the lifting rod can move up and down in the blind hole; the top of the lifting rod is connected with the lower end of the spring; a vertical long hole is formed in the side surface of the connection rod; fixing slots are formed in two ends of the long hole; a handle is arranged on the side surface of the lifting rod and extends out of the long hole; the fixing slots are disposed under the spring box. The labor-saving rotation flexible arm rod is simple in structure, convenient and practical; the two plane bearings are additionally arranged at the bottom of the rotation flexible arm rod, so that the top cover of an active carbon filter is relatively easy to move; the top cover bounds upwards by a certain distance under the action of the elastic force of the spring when the top cover is opened, thereby ensuring that a seal ring cannot be cut off, reducing the labor intensity and improving the labor efficiency.