公开(公告)号：US4559494A

公开(公告)日：1985-12-17

申请号：US498167

申请日：1983-05-25

申请人： Shigeki Takeshita

发明人： Shigeki Takeshita

IPC分类号： G01D4/10 ,  G01R11/64

CPC分类号： G01R11/64 ,  G01D4/10

摘要： A maximum demand meter comprises a driving part for transmitting a rotation depending on a consumed electric energy, a differential gear mechanism comprising a first sun gear rotated by the driving part in a predetermined direction, a second sun gear driven in the opposite direction of the rotation of the first sun gear and a planet gear for transmitting the rotations of the first and second sun gears to a push arm for moving a pointer, a zero-returning driving part for rotating the second sun gear of said differential gear mechanism in a predetermined direction and an engaging pawl means for inhibiting either of the first and second sun gears of the differential gear mechanism from rotating in a predetermined direction. In normal state, the engaging pawl means inhibits the second sun gear from rotation and allows the rotation of the first sun gear to rotate the planet gear thereby to forwardly move the push arm and at a demand time, the engaging pawl means inhibits the first sun gear from the rotation and allows the second sun gear to rotate and the zero-returning driving means drives the second sun gear to rotate the planet gear thereby to return the push arm to the zero position.

摘要翻译： 最大需求量表包括用于根据消耗的电能传递旋转的驱动部件，包括由驱动部件沿预定方向旋转的第一太阳齿轮的差速齿轮机构，沿与旋转相反的方向驱动的第二太阳齿轮 的第一太阳齿轮和用于将第一和第二太阳齿轮的旋转传递到用于移动指针的推动臂的行星齿轮;零返回驱动部分，用于沿预定方向旋转所述差速齿轮机构的第二太阳齿轮 以及用于抑制差速齿轮机构的第一和第二太阳齿轮中的任一个的接合爪装置在预定方向上旋转。 在正常状态下，接合爪装置禁止第二太阳齿轮旋转并允许第一太阳齿轮的旋转以使行星齿轮旋转，从而向前推动推动臂，并且在需要时，接合爪装置抑制第一太阳 齿轮从旋转并允许第二太阳齿轮旋转，零返回驱动装置驱动第二太阳轮旋转行星齿轮，从而使推臂返回至零位置。