What is a leather tape measure?
internal structure
The synchronous belt drive leather tape measure related to the field of tools and measuring tools is for the well-known leather tape measure whose internal structure is combined by a spring rewinding disc and a ruler strip rewinding disc. If the measurement size of the leather tape measure is enlarged, the radial direction will become larger, and there is a kind of leather tape designed for the technical problem of inflexible use. The main point of the design is that the front casing and the rear casing are in the shape of a long curved surface in the transverse direction, and a short body in the shape of a multi-arc in the longitudinal direction; the front casing and the rear casing are provided with a timing belt, a large gear, a small gear, a rotating drum, and a rotating wheel; One section of the large gear and the synchronous belt is set in the rotating drum, and the other section of the pinion and the synchronous belt is set on the pin shaft of the rotating wheel extending the pinion; the tape measure is wound in the groove of the rotating wheel; the rotating drum and the rotating The wheels are sleeved on the corresponding pins of the front casing and the rear casing. The aspect ratio of the tape measure with this structure changes greatly, it is comfortable and dexterous to use, and the winding is more stable, which is an ideal leather tape measure.