Conversion mechanism for spring pressure gauge

The invention discloses a conversion mechanism for a spring pressure gauge, which comprises a watch case, a sealing member, a piston block, a spring, a limit part, a transmission rack and a transmission gear, and the inner bottom of the watch case is integrally formed with a tubular casing arranged along the transverse direction , the other end of the tubular shell is formed with an opening, and the seal, piston block, spring and limit parts are sequentially loaded into the tubular shell through the opening, the seal is fixed on the piston block, and the two ends of the spring are respectively connected to the piston block and the limit The positioning parts are offset against each other, and the limiting parts are fixed in the tubular casing. The side wall of the tubular casing has a strip-shaped hole extending axially along the tubular casing, and the piston block has a connecting block extending from the strip-shaped hole to the tubular casing. The transmission rack is movably arranged in the watch case and is fixedly connected with the connection block. The transmission gear is coaxially fixed on the pointer installation shaft, and the teeth on the transmission gear mesh with the teeth on the transmission rack. The conversion mechanism has simple and reasonable structure, convenient assembly and operation, and the product is small in size and beautiful in appearance.