US 7,576,474 B2
Piezoelectric motor
Burhanettin Koc, Gyunggi-do (Korea, Republic of); Dong Kyun Lee, Seoul (Korea, Republic of); Hyun Phill Ko, Seoul (Korea, Republic of); and Byung Woo Kang, Seoul (Korea, Republic of)
Assigned to Samsung Electro-Mechanics Co., Ltd., Suwon (Korea, Republic of)
Filed on Oct. 12, 2007, as Appl. No. 11/907,522.
Claims priority of application No. 10-2006-0100150 (KR), filed on Oct. 16, 2006.
Prior Publication US 2008/0093953 A1, Apr. 24, 2008
Int. Cl. H02N 2/00 (2006.01)
U.S. Cl. 310—323.13  [310/323; 310/316] 6 Claims
OG exemplary drawing
 
1. A piezoelectric motor comprising:
a piezoelectric member which generates a stretching vibration mode generated in a longtitudinal direction of the piezoelectric member and a bending vibration mode generating in a thickness direction of the piezoelectric member simultaneously by an applied power, wherein the piezoelectric member has a concave portion formed on one side of the piezoelectric member; and
a frictional member of which a portion is insertedly attached and fixed into the concave portion, wherein the frictional member is in an elliptic motion by the stretching vibration mode and the bending vibration mode and, actuates a rotor to be rotated by friction between the frictional member and the rotor.