利索-全球专利检索

  1. 登录
  2. 注册
发明授权
CN105487369B 能够指示世界上任何地方的日出或日落的钟表 有权

能够指示世界上任何地方的日出或日落的钟表
摘要：
本发明涉及一种包括在考虑季节变化的情况下用于指示日出和日落的装置(17、27)的钟表。这些装置包括表示地球仪的球体(17)、布置成与球体同心的壳体(27)，该壳体(27)布置成通过指示地球的明暗界限的位置来使地球仪的处于夜间的一个部分与处于白天的另一部分分界开。该壳体能够在彼此垂直的两个轴线(X‑X、Y‑Y)上围绕地球仪枢转。该壳体被机芯驱动，从而以每24小时一圈的速率围绕极轴线(X‑X)转动。脱开机构(50)被年凸轮(56)控制，该年凸轮具有代表太阳关于赤道平面的倾角的轮廓。脱开机构通过与极轴线(X‑X)同心的驱动轴(35)控制壳体关于轴线(Y‑Y)的倾角。
摘要（英）：

The timepiece comprises means for indicating the sunrise and sunset taking account of seasonal variations. These means comprise a sphere reproducing the terrestrial globe, a shell arranged concentrically to the sphere and arranged to demarcate one portion of the terrestrial globe where it is night from another portion where it is day by indicating the position of the Earth's terminator. The shell can pivot about the globe on two axes perpendicular to each other. The shell is driven by the movement so as to rotate at a rate of one revolution per 24 hours about the polar axis. A disconnecting mechanism is controlled by an annual cam which has a profile representative of the tilt of the Sun with respect to the equatorial plane. The disconnecting mechanism controls the tilt of the shell about the axis by means of a drive shaft concentric to the polar axis.

公开/授权文献
0/0