Capacitive sensor core with flexible hinge and sensor using the same

A capacitive angular movement sensor, comprising:

• a capacitive sensor core with flexible hinge, comprising a main grid plate (3), a minor grid plate (4) and a mechanism for converting a measurement to a relative movement between the main grid plate and the minor grid plate;
• wherein the mechanism a stationary arm 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 active arm is mounted on the stationary arm via the flexible hinge that is used as supporting arm to form a lever-like mechanism, the active arm is rotated around the rotation center of the flexible hinge as the rotation center of the lever-like mechanism with respect to the stationary arm, the main grid plate (3) mounted on the stationary arm and the minor grid plate (4) mounted on the driven portion of the active arm are the main grid plate (3) and the minor grid plate (4) of a capacitive angular movement sensor, 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).

An adjustable digital caliper, comprising:

• a capacitive sensor core with flexible hinge, comprising a main grid plate (3), a minor grid plate (4) and a mechanism for converting a measurement to a relative movement between the main grid plate and the minor grid plate;
• wherein the mechanism comprises a stationary arm 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);
• 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.

A lever gauge, comprising:

• a capacitive sensor core with flexible hinge, comprising a main grid plate (3), a minor grid plate (4) and a mechanism for converting a measurement to a relative movement between the main grid plate and the minor grid plate;
• wherein the mechanism comprises a stationary device and an active device, the minor grid plate (4) and the main grid plate (3) are respectively mounted on a driven portion of the active device and the stationary device, the stationary device is connected to the active device 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);
• 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.

A micrometer, comprising:

• a capacitive sensor core with flexible hinge, comprising a main grid plate (3), a minor grid plate (4) and a mechanism for converting a measurement to a relative movement between the main grid plate and the minor grid plate;
• wherein the mechanism comprises a stationary arm 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);
• 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) and the minor grid plate (4) respectively mounted on the stationary arm and the active arm are the main grid plate (3) and the minor grid plate (4) of a linear displacement capacitive sensor.