JPS6491013A - Structure of remote reading device of indicated azimuth of magnetic compass - Google Patents

Abstract

PURPOSE:To enhance accuracy, vibration resistance and shock resistance with a simple constitution and to improve reading accuracy, by providing step parts on the central shaft of a magnetic needle and a pivot shaft, supporting an upper pivot with a hole pivot receiver, and supporting a lower pivot with a spring. CONSTITUTION:Steps are provided on a central shaft 3 of a magnetic needle and a pivot 6. The upper pivot 6 is supported with an upper pivot receiver 17, which is a highly accurately machined hole. The steps are made to function as a stopper, a shock absorbing part and the like. Meanwhile, a V-shaped lower pivot receiver 18, which supports the lower pivot 6, is supported with a spring 19. Vibration and shocks, which are applied to the shaft 3, are absorbed. Thus, accuracy, vibration resistance and shock resistance of the magnetic needle are enhanced with the simple constitution. Remote reading accuracy of azimuth through an encoder is improved.