VIBRATION TYPE ACTUATOR, OPTICAL DEVICE AND IMAGING DEVICE,申请号JP20140158826-传众专利搜索

VIBRATION TYPE ACTUATOR, OPTICAL DEVICE AND IMAGING DEVICE

申请公布号：JP2016036233(A)

申请号：JP20140158826

申请日期：2014.08.04

申请公布日期：2016.03.17

申请人：

CANON INC

发明人：OSAWA KAZUHARU

分类号：H02N2/00

主分类号：H02N2/00

摘要：PROBLEM TO BE SOLVED: To provide a vibration type actuator which is hard to cause the delamination between a piezoelectric element and an elastic member.SOLUTION: A vibration type actuator comprises: a vibrator 11 having a piezoelectric element 111 and an elastic member 112, which are glued to each other; a driven member 12 which is driven relatively to the vibrator 11; and a pressure-applying member 13 which applies a pressure for pressing the vibrator 11 against the driven member 12. The elastic member 112 has pressed parts 112c each extending along a predetermined direction, to which the pressure is applied by the pressure-applying member 13. The pressure-applying member 13 has: applied pressure-transmit parts 13a connected with the corresponding pressed parts 112c respectively; and pressure-application holding parts 13b. Supposing that in a region of a boundary portion of the elastic member 112 and piezoelectric element 111 glued to each other, an end point close to each pressed part 112c is defined as a point P, a D3 direction in which the pressed part 112c extends when viewed from the point P is defined as a first direction, and a D4 direction opposite to the D3 direction is defined as a second direction, each pressure-application holding part 13b is disposed at a position spaced apart from the point P in the second direction.SELECTED DRAWING: Figure 2