Electromechanical motor

摘要

An electromechanical motor includes an actuator assembly and a body to be driven in a driving direction. The actuator assembly has an actuator backing, a first actuator and a second actuator. The actuators are mechanically attached by a respective single attachment to the actuator backing at a first end of the actuators. The actuators have a respective interaction portion constituting a second end opposite to the first end in an actuator direction transverse to the driving direction. The interaction portions are arranged for interaction with an interaction surface of the body by a respective contact area. The actuators include a respective unimorph member arranged for causing a movement of the respective contact area as a response of a respective electrical signal. The respective movements are transverse to the actuator direction, to the driving direction, and to each other.

主权项

1. An electromechanical motor, comprising:
an actuator assembly; a body, relative to which said actuator assembly is to be acting for causing a relative displacement of said body in a driving direction; said actuator assembly having an actuator backing, a first actuator and a second actuator; said first actuator is mechanically attached by a single attachment; said single attachment of said first actuator is a first attachment to said actuator backing, said first attachment being provided at a first end of said first actuator; said first actuator having a first interaction portion constituting a second end of said first actuator, said second end of said first actuator being opposite to said first end of said first actuator in an actuator direction; said second actuator is mechanically attached by a single attachment; said single attachment of said second actuator is a second attachment to said actuator backing, said second attachment being provided at a first end of said second actuator; said second actuator having a second interaction portion constituting a second end of said second actuator, said second end of said second actuator being opposite to said first end of said second actuator in said actuator direction; said actuator direction being transverse to said driving direction; said first interaction portion and said second interaction portion being arranged for interaction with an interaction surface of said body by a respective contact area; said first actuator and said second actuator comprise a respective member comprising an electromechanical material arranged between a respective said first end and a respective said second end of said first actuator and said second actuator; each of said members that comprises an electromechanical material being arranged for causing a one-dimensional movement forth and back of a respective said contact area as a response of a respective single electrical signal; and said respective one-dimensional movements are transverse to said actuator direction, transverse to said driving direction, as well as transverse to each other; each of said members that comprises an electromechanical material comprises an active volume, exhibiting a change in dimension as a response of said single electrical signal applied thereto, and a passive volume mechanically attached to a respective said active volume along said actuator direction; said active volume of said first actuator is positioned before said passive volume in said driving direction; and said active volume of said second actuator is positioned after said passive volume in said driving direction.