Micro-Displacement Actuator Mechanism
OwnerChe-Chih Tsaoinventor
Life of this patent
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Abstract
This invention describes a mechanism that can be actuated by a common actuator of regular precision but still achieve high precision micro-displacement at its output. That is, the mechanism in combination with a regular actuator becomes a low-cost precision micro-displacement actuator. The micro-displacement actuator mechanism is based on an Uneven-Legs Tilting mechanism in combination with at least one parallel four-bar linkage. The Uneven-Leg Tilting mechanism can provide a very small tilt angle from an input of a finite linear or rotational displacement that is easy to generate and to control. By the micro-displacement actuator mechanism, this very small tilt angle can be transformed into a micro-displacement.
Claims5
A mechanism for micro-displacement actuator comprising
- an uneven-legs mechanism comprising a four-member linkage with a top member connected to a first leg member at one end and a second leg member at the other end, the first leg member and the second leg member being connected to a base member respectively, the first leg member and the second leg member having different lengths;
- a first parallel four-bar linkage mechanism, the uneven-legs mechanism being placed side by side with the parallel four-bar linkage mechanism, the first leg member of the uneven-legs mechanism being fixed, in parallel, to a first bar of the parallel four-bar linkage mechanism, the first leg member of the uneven-legs mechanism and the first bar of the parallel four-bar linkage mechanism being of the same length, the base member of the uneven-legs mechanism being fixed to a second bar of the parallel four-bar linkage mechanism, the second bar of the parallel four-bar linkage mechanism being at a position corresponding to the base member of the uneven-legs mechanism and connected to one end of the first bar of the parallel four-bar linkage mechanism;
- a base frame, a third bar of the parallel four-bar linkage mechanism, locating opposite to the second bar, being mounted and fixed to the base frame.
Dependencies are inferred from the claim text.