| 摘要 |
<p>The proposed invention relates to instrument engineering, namely, to indication systems in analog measuring devices and multi-stage information instruments, particularly in electro¬ mechanical and mechanical watches, and strives to improve their arrangements due to direct application of gear mechanism as a display module with optimal arrangement of power, drive and control systems, thus making the instrument more compact, reliable and visually comfortable. This purpose is attained in measuring instruments with escapement and/or drive with known linear dependence between its rotary speed and measured value, which comprises a multistage gear mechanism including nested coaxial planetary gearings with optional internal setting joinings and external kinematic relations. Some variants are also proposed for engagement in such mechanisms and aimed to increase their operational efficiency due to minimization of sliding friction in them by application of bearing gears that along with gearing engagement and radial rolling effected by cylindrical surfaces of coaxial end rollers, have axial rolling, namely, herringbone or arched engagement, or beveled teeth and rollers adjacent end faces.</p> |
