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公开(公告)号：EP2153476A1
公开(公告)日：2010-02-17
申请号：EP09721193.2
申请日：2009-05-27
发明人： WISCHNEWSKIJ, Alexej , WISCHNEWSKIJ, Wladimir , BRÜGGEMANN, Ulrich , HÜBNER, Reinhard , LINDIG, Siegfried
IPC分类号： H01L41/09
CPC分类号： G02B7/10 , H01L41/0986 , H02N2/0025 , H02N2/026 , H02N2/103
摘要： The invention relates to an ultrasonic actuator, preferably for use in an ultrasonic motor, in the form of a piezoelectric plate with a length L, height H and thickness t, wherein the piezoelectric plate has a lateral plane of symmetry Sq, a longitudinal plane of symmetry Sl and at least two main surfaces, and the piezoelectric plate comprises at least two generators symmetrically disposed with respect to plane of symmetry Sq for generating ultrasonic standing waves. According to the invention, the piezoelectric plate has a shape that includes at least eight lateral surfaces, wherein at least two of the lateral surfaces are working surfaces for contacting of elements to be driven, and at least two of the lateral surfaces are holding surfaces for holding the piezoelectric plate, and the remaining lateral surfaces are free surfaces, wherein at least four free surfaces are arranged at an identical angle α with respect to the longitudinal plane of symmetry Sl and/or at an identical angle φ with respect to the lateral plane of symmetry Sq.
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公开(公告)号：EP1747594B1
公开(公告)日：2013-01-16
申请号：EP05743098.5
申请日：2005-05-13
CPC分类号： H01L41/0986 , H02N2/002 , H02N2/026
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公开(公告)号：EP1747594A1
公开(公告)日：2007-01-31
申请号：EP05743098.5
申请日：2005-05-13
IPC分类号： H01L41/09
CPC分类号： H01L41/0986 , H02N2/002 , H02N2/026
摘要： The invention relates to a piezoelectric ultrasound motor comprising an oscillator (1) in the form of a piezoelectric plate (11) having a length L and a height H, and one or two friction elements (5) which are arranged on the oscillator and elastically pressed against the friction surface of the part to be displaced. According to the invention, the piezoelectric plate is divided into two identical parts by a cutting plane extending perpendicularly to the large surfaces, at least one of said parts containing an asymmetrical generator (19, 20) which generates an asymmetrical two-dimensional standing wave during the control thereof, in such a way that the friction elements arranged in the centre of the long front side of the plate perform a movement (35) which is inclined in relation to the front side, enabling the kinetic energy to be transferred to the part (3) to be displaced.
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公开(公告)号：EP2095441B1
公开(公告)日：2010-08-11
申请号：EP07847102.6
申请日：2007-11-02
IPC分类号： H01L41/09
CPC分类号： H02N2/0065 , H02N2/0055 , H02N2/006 , H02N2/026 , H02N2/065 , H02N2/103
摘要： The invention relates to an ultrasound drive (1) with at least two ultrasound oscillators (2), which are arranged opposite one another and have piezoelectric plates with friction elements (3) arranged on them, a friction rail (4) with two friction layers on it, a movable holding apparatus (11), a base plate (8) for the drive and an excitation apparatus (12) of the ultrasound oscillators. According to the invention, the friction rail is in the form of a multilayer bar or ring with an uneven number of layers, wherein the central layer forms a carrier plate or disc and two outer layers form the friction layers, and wherein viscous layers and elastic layers are arranged between the central layer and the outer layers, and the carrier plate or disc has fastening points, with which the friction rail is fitted on the movable holding apparatus or the base plate.
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公开(公告)号：EP2208243A2
公开(公告)日：2010-07-21
申请号：EP08847048.9
申请日：2008-11-03
IPC分类号： H01L41/09
CPC分类号： H02N2/002 , G02B7/08 , H02N2/0065 , H02N2/008 , H02N2/026
摘要： The invention relates to an ultrasonic linear drive unit comprising a driving element as an ultrasonic oscillator with two generators for ultrasonic vibrations and a driven element that forms a frictional contact with the driving element, and an electrical excitation source for the driving element. According to the invention, the ultrasonic oscillator is designed as a hollow thin-walled piezoelectric cylinder, the height H of which is identical to or smaller than the mean diameter D thereof. The generators for ultrasonic vibrations are symmetrically disposed on both sides relative to the sectional plane S that extends through the center of the height of the ultrasonic oscillator, perpendicular to the longitudinal axis L thereof. The cylinder surface of the driving element is in contact with the driven element, and the electrical excitation source is connected to the ultrasonic linear drive unit in such a way that the drive unit excites only the first or the second generator for ultrasonic vibrations.
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公开(公告)号：EP1915787A2
公开(公告)日：2008-04-30
申请号：EP06764276.9
申请日：2006-07-31
IPC分类号： H01L41/09 , H01L41/04 , H01L41/083 , H02N2/00
CPC分类号： H02N2/026 , H01L41/083 , H02N2/002 , H02N2/008
摘要： The invention relates to a piezoelectric actuator, particularly for an ultrasonic motor, comprising an acoustic oscillation resonator, in which the acoustic oscillation resonator has, in essence, the shape of a rectangular piezoelectric plate with two main, two lateral and two front surfaces and has a multilayer structure inside that depicts a layer of excitation electrodes, which alternate with the layers of the shared electrodes and with the layers of polarized ceramic located therebetween. The polarization vector runs perpendicular to the surface of the electrodes, and all excitation electrodes are divided into two groups, which are not connected to one another and which are arranged symmetrically to symmetry surface of said plate. This symmetry surface runs perpendicular to the main and lateral surfaces of the plate and, to be precise, through the middle, and each group of the excitation electrodes, together with the shared electrodes and the piezo ceramic therebetween, form a multilayer generator, which is asymmetrically arranged with regard to the symmetry surface of the piezoelectric plate, for an acoustic wave.
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公开(公告)号：EP1861740B1
公开(公告)日：2010-08-11
申请号：EP06707059.9
申请日：2006-02-17
IPC分类号： G02B7/10
CPC分类号： G02B7/023 , G02B7/08 , G02B7/102 , H02N2/002 , H02N2/008 , H02N2/026 , H02N2/062 , H02N2/065
摘要： The invention relates to an objective module comprising an optical zoom lens group (2) and a focussing optical lens group (4), the combined optical axes forming the optical axis (7) of the objective, and an electrical drive for the two lens groups. According to the invention, the electrical drive of the cited lens groups is embodied in the form of two linear ultrasonic motors (9, 11), each of the two ultrasonic motors consisting of a piezoelectric plate (12) comprising two friction elements (14) which are pressed against the opposing front sides and form the mobile elements of the ultrasonic motors together with the pressure elements (15). Each of the mobile elements is elastically connected to the corresponding lens group. The ultrasonic motors are arranged in such a way that the direction of displacement of the mobile elements is parallel to the optical axis of the optical module.
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公开(公告)号：EP1812975B1
公开(公告)日：2008-07-02
申请号：EP05732351.1
申请日：2005-04-13
IPC分类号： H01L41/09
CPC分类号： H02N2/0055 , H02N2/026
摘要： The invention relates to an ultrasound linear piezoelectric motor comprising an ultrasound oscillator (1) embodied in the form of a piezoelectric plate (4) or a cylinder shell part (3), acoustic oscillation generators (5) and a friction element (6) which frictionally interacts with a driven element (8) and is disposed in a holder. The inventive holder is embodied in the form of an elastic clamp (13) which embraces a driven element, is fixed to the ultrasound oscillator and made of a sound-conducting material.
摘要翻译： 超声波线性压电马达技术领域本发明涉及一种超声波线性压电马达，该超声波线性压电马达包括以压电板（4）或圆柱壳体部件（3）的形式构造的超声振荡器（1），声振动发生器（5）和摩擦元件（6） 与从动元件（8）摩擦地相互作用并且被设置在保持器中。 本发明的保持器被构造成包含从动元件的弹性夹具（13）的形式，被固定到超声振荡器并且由导音材料制成。
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公开(公告)号：EP1861740A1
公开(公告)日：2007-12-05
申请号：EP06707059.9
申请日：2006-02-17
IPC分类号： G02B7/10
CPC分类号： G02B7/023 , G02B7/08 , G02B7/102 , H02N2/002 , H02N2/008 , H02N2/026 , H02N2/062 , H02N2/065
摘要： The invention relates to an objective module comprising an optical zoom lens group (2) and a focussing optical lens group (4), the combined optical axes forming the optical axis (7) of the objective, and an electrical drive for the two lens groups. According to the invention, the electrical drive of the cited lens groups is embodied in the form of two linear ultrasonic motors (9, 11), each of the two ultrasonic motors consisting of a piezoelectric plate (12) comprising two friction elements (14) which are pressed against the opposing front sides and form the mobile elements of the ultrasonic motors together with the pressure elements (15). Each of the mobile elements is elastically connected to the corresponding lens group. The ultrasonic motors are arranged in such a way that the direction of displacement of the mobile elements is parallel to the optical axis of the optical module.
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