Abstract: A movement amplifying actuation device may include two piezoelectric beams, one beam being attached at a fixed point, and a hinge connecting a first beam and a second beam between them. Each hinge may include a first flexible portion connected to the first beam, a second flexible portion connected to the second beam, a first rigid portion connecting the first and second flexible portions, a second rigid portion capable of being positioned against a fixed point, and a third flexible portion connecting the second beam to the second rigid portion at a pivot point of the second beam such that the assembly formed by the second rigid portion and the second beam forms a lever around the pivot point. The flexible and rigid portions may form a single piece.

Abstract: The invention relates to a haptic feedback device comprising: a body (10) able to form an interface with a user; contacting means (20) able to establish a contact with a surface (2) of a system (3) able to contain information; a first actuator (30) linked to the contacting means and able to apply a translational movement to said contacting means with respect to said body; braking means (40) able to apply a mechanical resistance to the relative movement between the contacting means (20) and the body (10); a second actuator (50) able to make the mechanical resistance applied by the braking means (40) vary.

Abstract: Movement amplifying actuation device (100) comprising at least two piezoelectric beams (101, 102, 103), one beam (101) being attached at a fixed point (111), and at least one hinge (131, 132) connecting a first beam (101, 102) and a second beam (102, 103) between them. Each hinge comprises: a first flexible portion connected to the first beam, a second flexible portion connected to the second beam, a first rigid portion connecting the first and second flexible portions, a second rigid portion capable of being positioned against a fixed point (112, 113), and third flexible portion connecting the second beam to the second rigid portion at a pivot point of said second beam such that the assembly formed by the second rigid portion and the second beam forms a lever around said pivot point. Said flexible and rigid portions form a single piece.

Abstract: The invention relates to a haptic feedback device comprising: a body (10) able to form an interface with a user; contacting means (20) able to establish a contact with a surface (2) of a system (3) able to contain information; a first actuator (30) linked to the contacting means and able to apply a translational movement to said contacting means with respect to said body; braking means (40) able to apply a mechanical resistance to the relative movement between the contacting means (20) and the body (10); a second actuator (50) able to make the mechanical resistance applied by the braking means (40) vary.