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公开(公告)号：US20240210891A1
公开(公告)日：2024-06-27
申请号：US18528966
申请日：2023-12-05
发明人： Mohammad Hussein KAHROBAIYAN , Yvan FERRI , Alexandre DIDIER , Lionel PARATTE , Jean-Jacques BORN
摘要： A piezoelectric resonator, in particular for a rotary piezoelectric motor, the resonator including a stationary base and an oscillating mass extending around a longitudinal axis, the oscillating mass being provided with at least one flyweight, preferably two opposing flyweights, wherein the resonator includes a flexible guide connecting the oscillating mass to the base, so as to be able to cause the oscillating mass to oscillate about a centre of rotation in a pendulum movement, the flexible guide comprising at least a first flexible blade connecting the base to the oscillating mass, the first flexible blade comprising at least in part an electrically actuatable piezoelectric material for deforming the first flexible blade and causing the oscillating mass to oscillate.
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公开(公告)号：US11811334B2
公开(公告)日：2023-11-07
申请号：US17234560
申请日：2021-04-19
摘要： An electrostatic machine including a rotor plate comprising a plurality of rotor electrodes, and rotatably fixed to a shaft; a stator plate comprising a plurality of stator electrodes; an excitation circuit electrically coupled to at least one of the rotor plate or the stator plate at a first end, and electrically couplable to exchange power at a second end with a selected one of an electrical power source or an electrical load; wherein the excitation circuit is configured to: in a first motoring mode, provide excitation power to at least one of the rotor plate or the stator plate, wherein the shaft provides positive torque to the load; and in a second generating mode, wherein the shaft receives negative torque from the load, operably couple at least one of the rotor plate or the stator plate to the electrical power source.
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公开(公告)号：US11764705B2
公开(公告)日：2023-09-19
申请号：US17863907
申请日：2022-07-13
发明人： Lin Yang , Mojian Yang , Chunsheng Zhao
CPC分类号： H02N2/12 , H02N2/0065 , H02N2/142 , H02N2/163
摘要： A high-torque and high-precision ultrasonic motor with a self-protection function and an implementation mode of the high-torque and high-precision ultrasonic motor are provided. In the device, a gasket encloses an output shaft of an ultrasonic motor body. A harmonic reducer encloses a shell of the ultrasonic motor body. A motor shaft penetrates through the ultrasonic motor body. The end, close to the motor shaft, of the ultrasonic motor body is defined as a top end, and the bottom end of the motor shaft is sequentially enclosed with an encoder support and a high-precision encoder assembly. The gasket, the harmonic reducer, the encoder support and the high-precision encoder assembly are sequentially arranged from the ultrasonic motor body to the bottom end of the motor shaft. After the ultrasonic motor body decelerates and increases torque, the motor shaft outputs rotating speed and torque.
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公开(公告)号：US11742779B2
公开(公告)日：2023-08-29
申请号：US17141193
申请日：2021-01-04
发明人： Justin Kyle Reed , Ryan Knippel , William D. Butrymowicz , Graham T. Reitz , Matthew Maroon , Baoyun Ge , Daniel Colin Ludois , Aditya Nandakumar Ghule , Serge Kuro , Kevin Frankforter
摘要： An example electrostatic machine includes a number of stator plates, each having a stator electrode and rotationally fixed to a housing, a shaft at least partially defined within the housing and configured to rotate about an axis, and a number of rotor plates, each having a rotor electrode and rotational fixed to the shaft. The electrostatic machine includes a dielectric fluid disposed in the housing, and that fills a gap between the stator plates and the rotor plates. The electrostatic machine includes a seal associated with the shaft, where the seal includes a material compatible with the dielectric fluid.
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公开(公告)号：US11711033B2
公开(公告)日：2023-07-25
申请号：US17601971
申请日：2020-04-22
申请人： TELEMAQ SAS
摘要： The invention relates to a piezoelectric motor with bending travelling wave, comprising a rotary shaft (4) connected to a rotor (3), a piezoelectric element (2) attached to a vibrating stator (1), and a decoupling web (5) for attaching the vibrating stator to a mounting (7). The mounting (7) is mechanically connected to a base (9) by means of at least one deformable element (10) and at least one piezoelectric actuator (11), so that the support can be deformed angularly relative to the base in order to rotate the shaft when the vibrating stator is no longer electrically powered. The motor is particularly suitable for applications that require micrometre or nanometre accuracies, for example in positioning tools in industrial processes, precise medical robotics or optical applications.
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公开(公告)号：US20230198429A1
公开(公告)日：2023-06-22
申请号：US18074886
申请日：2022-12-05
摘要： A rotary piezoelectric motor (1), in particular for a timepiece, including a rotor (3) configured to rotate and actuate a mechanical device, and a stator (2) configured to rotate the rotor (3), the stator (2) including a piezoelectric actuator provided with a resonator (29) arranged to perform an oscillatory motion, and a fixed element (4). The resonator in a movable element (5) arranged at a distance from the fixed element (4) and connected to the fixed element (4), the piezoelectric actuator being configured to move the movable element (5) against the rotor (3) to make it rotate, the movement of the movable element (5) making the rotor (3) rotate in a first direction.
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公开(公告)号：US20230031934A1
公开(公告)日：2023-02-02
申请号：US17860006
申请日：2022-07-07
发明人： Yuki Oda , Satoshi Tsuchiya
IPC分类号： H01L41/09 , H01L41/053 , H02N2/12 , H02N2/10
摘要： A vibrating actuator includes a contact body and a vibrating body that vibrates, has an energy conversion element, and has an elastic body in contact with the contact body to move relative to each other from the vibration. The contact body has a base part, a thin plate part, a support part, and a friction member. The thin plate part extends from the base part toward an annular center axis of the base part and the support part is disposed at an end of the thin plate part. The friction member is disposed to the support part as a member separate from the support part and in contact with the elastic body. Density of the friction member is higher than density of the thin plate part. A weight ratio of the thin plate part to a total weight of the friction member and the support part is 0.5 to 1.5.
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公开(公告)号：US11533004B2
公开(公告)日：2022-12-20
申请号：US16953271
申请日：2020-11-19
发明人： Donghyun Hwang , Byeongkyu Lim
摘要： The present disclosure provides a rotary motor, which includes: a clamping member having a gripping unit installed at an inner circumference of a rotor to grip the rotor during a predetermined time; and a driving member installed at the inner circumference of the rotor and having a rotation unit configured to make an elastic deformation to rotate by a predetermined angle and then return to an original state so that the rotor is rotated.
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公开(公告)号：US20220209687A1
公开(公告)日：2022-06-30
申请号：US17601971
申请日：2020-04-22
申请人： TELEMAQ SAS
摘要： The invention relates to a piezoelectric motor with bending travelling wave, comprising a rotary shaft (4) connected to a rotor (3), a piezoelectric element (2) attached to a vibrating stator (1), and a decoupling web (5) for attaching the vibrating stator to a mounting (7). The mounting (7) is mechanically connected to a base (9) by means of at least one deformable element (10) and at least one piezoelectric actuator (11), so that the support can be deformed angularly relative to the base in order to rotate the shaft when the vibrating stator is no longer electrically powered. The motor is particularly suitable for applications that require micrometre or nanometre accuracies, for example in positioning tools in industrial processes, precise medical robotics or optical applications.
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公开(公告)号：US11296619B2
公开(公告)日：2022-04-05
申请号：US16418109
申请日：2019-05-21
申请人： Encite LLC
发明人： Stephen A. Marsh
摘要： Disclosed is a force transfer device that includes a first body that has a first body frame that defines a first chamber and at least one gear element. The gear element has a central gear element region. A first membrane is affixed to a surface of the first body frame, the membrane covering the chamber and having an annular aperture enclosing a central region of the membrane that is affixed to the central gear element region of the gear element. The disclosed force transfer device can be axle or shaft based. Also disclosed in a micro electrostatic motor that includes a motor body having a first and a second face, the motor body defining a chamber and a rotor having a central region. A membrane is disposed over the first face of the motor body, the membrane supporting a pair of spaced electrodes that are electrically isolated by a gap, the membrane having an annular aperture that defines a central region of the membrane that is coupled to the central region of the rotor. The force transfer device can be driven by the electrostatic motor.
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