Patent ID: 8130003

Claim:
A capacitive sensor core with flexible hinge, comprising: a main grid plate; a minor grid plate; and a mechanism for converting a measurement to a relative displacement between the main grid plate and the minor grid plate; wherein the mechanism comprises a stationary arm ( 1 ) and an active arm, the minor grid plate ( 4 ) and the main grid plate ( 3 ) are respectively mounted on a driven portion of the active arm and the stationary arm, the stationary arm is connected to the active arm by a flexible hinge; the flexible hinge comprises at least two supporting spring leaves ( 7 ), each supporting spring leaf ( 7 ) is connected to the stationary arm at one end, and the other end of the supporting spring leaf ( 7 ) is connected to the active arm; each supporting spring leaf ( 7 ) is vertical to the main grid plate ( 3 ) and the minor grid plate ( 4 ); and the flexible hinge between the active arm ( 2 ) and the stationary arm ( 1 ) comprises the intersected supporting spring leaves ( 7 ), the active arm ( 2 ) is rotated around the intersection of the supporting spring leaves ( 7 ) as the rotation center with respect to the stationary arm ( 1 ), the main grid plate ( 3 ) mounted on the stationary arm ( 1 ) and the minor grid plate ( 4 ) mounted on the driven portion of the active arm ( 2 ) are the main grid plate ( 3 ) and the minor grid plate ( 4 ) of a capacitive angular movement sensor; or the flexible hinge between the active arm ( 2 ) and the stationary arm ( 1 ) comprises the supporting spring leaves ( 7 ) that are symmetrically arranged, the active arm ( 2 ) performs linear movement with respect to the stationary arm ( 1 ) according to the symmetry central line of the supporting spring leaves ( 7 ), the main grid plate ( 3 ) mounted on the stationary arm ( 1 ) and the minor grid plate ( 4 ) mounted on the driven portion of the active arm ( 2 ) are the main grid plate ( 3 ) and the minor grid plate ( 4 ) of a linear displacement capacitive sensor.