公开(公告)号：US20170207384A1

公开(公告)日：2017-07-20

申请号：US15402616

申请日：2017-01-10

Applicant: TOPCON Corporation

Inventor： Yoshihiko Tokuda ,  Satoshi Nakamura ,  Yosuke Okudaira

IPC: H01L41/09 ,  H01L41/053 ,  B06B1/06 ,  G01S7/481 ,  H01L41/187

CPC classification number: H01L41/09 ,  B06B1/06 ,  G01C15/00 ,  G01S7/481 ,  H01L41/0533 ,  H01L41/187 ,  H02N2/163

Abstract: The invention provides a surveying instrument, in which an output shaft of an ultrasonic motor is attachably and detachably connected by a bolt to a lower end of a horizontal shaft of a frame unit supported rotatably in a horizontal direction, a rotating plate is fixed to the output shaft, a vibration generating component is formed on an outer circumferential portion of the rotating plate, a stator in close contact with the vibration generating component via a predetermined friction torque T1 is rotatably provided on the output shaft, the stator is restricted on a rotation by a whirl-stop unit, ultrasonic vibration is generated in the vibration generating component and the output shaft is rotated.