Piezoelectric motor, driving device, electronic component conveying device, electronic component inspection device, printing device, robot hand, and robot
AssigneeSeiko Epson Corporation
InventorYoshiteru Nishimura
Life of this patent
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Abstract
A vibrating body is accommodated in a vibrating body case in a state where both sides of the vibrating body containing a piezoelectric material are sandwiched between buffer portions from a direction intersecting a bending direction of the vibrating body, and the buffer portions are pressed against the vibrating body using a pressing lid through elastic portions. Pressing plates are provided between the buffer portions and the elastic portions to restrict the movement of the pressing plates in a vibration direction of the vibrating body.
Claims24
A piezoelectric motor in which stretching vibration and bending vibration are generated in a vibrating body to move an object, the piezoelectric motor comprising:
- a vibrating body which contains a piezoelectric material, and has a convex portion protruding from an end surface;
- a case which accommodates the vibrating body;
- a pressing elastic body which presses the case in a direction bringing the convex portion of the vibrating body into contact with the object;
- buffer portions which sandwich both sides of the vibrating body from a direction intersecting a bending direction of the vibrating body in the case, and contain a material having dynamic viscoelasticity;
- pressing lids which are attached to the case;
- disk springs which are provided between the pressing lids and the buffer portions, and are compressed by the pressing lids;
- and
- pressing plates which are provided between the buffer portions and the disk springs to restrict movement in a stretching direction and a bending direction of the vibrating body.
A piezoelectric motor in which stretching vibration and bending vibration are generated in a vibrating body to move an object, the piezoelectric motor comprising:
- a vibrating body which contains a piezoelectric material, and has a convex portion protruding from an end surface,
- a case which accommodates the vibrating body;
- a pressing elastic body which presses the case in a direction bringing the convex portion of the vibrating body into contact with the object;
- buffer portions which sandwich both sides of the vibrating body from a direction intersecting a bending direction of the vibrating body in the case, and are contain a material having dynamic viscoelasticity;
- pressing lids which are attached to the case;
- disk springs which are compressed by the pressing lids;
- pressing plates which are provided between the disk springs and the buffer portions.
Dependencies are inferred from the claim text.