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    PIEZOELECTRIC LINEAR MOTOR AND ELECTRONIC DEVICE
    2.
    发明公开
    PIEZOELECTRIC LINEAR MOTOR AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20240147865A1

    公开(公告)日：2024-05-02

    申请号：US18325950

    申请日：2023-05-30

    申请人： AAC Microtech (Changzhou) Co., Ltd.

    发明人： Wen Zhong ,  Zhuofan Zhou ,  Wenbiao Xu

    IPC分类号： H10N30/20 ,  H02N2/04 ,  H10N30/87 ,  H10N30/88

    CPC分类号： H10N30/2046 ,  H02N2/04 ,  H10N30/871 ,  H10N30/88

    摘要： A piezoelectric linear motor and an electronic device, including a piezoelectric actuator and an elastic structure fixed to two opposite sides of the actuator. The piezoelectric actuator extends/retracts to drive the elastic structure to move when a voltage is applied. The elastic structure includes sets of elastic connecting portions fixed to end portions of the piezoelectric actuator, each set includes two connecting legs fixed to two opposite sides of the piezoelectric actuator, each connecting leg extends toward an outer side of the piezoelectric actuator, and connecting legs located at a same side of the piezoelectric actuator extend away from each other, and an angle is formed between each of the connecting legs and a plane where the piezoelectric actuator is located. The connecting legs have better flexibility, the elastic structure has stronger deformation capability, a haptic feedback response speed is increased and thickness of the piezoelectric linear motor is reduced.

    Energy harvesting apparatus utilizing electroactive material and electrode unit for deformation
    3.
    发明授权
    Energy harvesting apparatus utilizing electroactive material and electrode unit for deformation 有权

    公开(公告)号：US11901842B2

    公开(公告)日：2024-02-13

    申请号：US17257996

    申请日：2018-07-10

    申请人： CHUNG-ANG UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

    发明人： Seung Hwan Chang

    IPC分类号： H02N2/18 ,  H10N30/30 ,  H10N30/50 ,  H10N30/87

    CPC分类号： H02N2/183 ,  H10N30/30 ,  H10N30/50 ,  H10N30/871

    摘要： An energy harvesting apparatus using an electroactive material includes an electricity generator including the electroactive material to generate a voltage due to deformation caused by an external stimulus, and an impact generator including a deformable and restorable material capable of repetitive deformation and restoration and configured to generate a dynamic behavior based on the repetitive deformation and restoration in the electricity generator. A stimulus of the impact generator with respect to the electricity generator enables energy harvest. An electrode unit for deformation includes an electricity generator including an electroactive material to generate a voltage due to deformation caused by an external stimulus, and an electrode part electrically connected to at least one surface of the electricity generator, and including an elastically deformable material to achieve relative deformation while in contact with the electricity generator.

    Methods of fabricating actuator assemblies
    5.
    发明授权
    Methods of fabricating actuator assemblies 有权

    公开(公告)号：US11871673B2

    公开(公告)日：2024-01-09

    申请号：US16844876

    申请日：2020-04-09

    申请人： The Boeing Company

    发明人： Daniel John Clingman

    IPC分类号： H10N30/20 ,  H10N30/06 ,  H10N30/87 ,  H10N30/03

    CPC分类号： H10N30/20 ,  H10N30/03 ,  H10N30/06 ,  H10N30/204 ,  H10N30/871 ,  H10N30/878

    摘要： Actuator assemblies, mechanical assemblies including the actuator assemblies, and methods of fabricating the same are disclosed herein. The actuator assemblies include a piezoelectric element having a first side and a second side, a first electrode in electrical communication with the first side, and a second electrode in electrical communication with the second side. The first electrode includes a flexible, electrically conductive membrane. The mechanical assemblies include a first structure, which includes a first interface surface, a second structure, which includes a second interface surface, and the actuator assembly. The actuator assembly is configured to provide a motive force for relative motion between the first structure and the second structure. The methods include defining a first electrode on a first side of a piezoelectric element and defining a second electrode on a second side of the piezoelectric element. The first electrode includes a flexible, electrically conductive membrane.

    PIEZOELECTRIC ELEMENT
    6.
    发明公开
    PIEZOELECTRIC ELEMENT 审中-公开

    公开(公告)号：US20230320225A1

    公开(公告)日：2023-10-05

    申请号：US18182851

    申请日：2023-03-13

    申请人： TDK Corporation

    发明人： Hiroki MITSUI ,  Hideya Sakamoto ,  Yoshiki Ohta ,  Miho Kato ,  Hiroyuki Ijiri ,  Akihiro Takeda

    IPC分类号： H10N30/87 ,  H10N30/50

    CPC分类号： H10N30/871 ,  H10N30/508

    摘要： A piezoelectric element includes a piezoelectric body, an external electrode, and an internal electrode. The internal electrode includes first and second internal conductors opposing each other. The first internal conductor includes first and second conductor portions continuous with each other. The second internal conductor includes a third conductor portion opposing the first conductor portion in a direction where the first and second internal conductors oppose each other, and a fourth conductor portion including a first region connected to the second conductor portion, and a second region continuous with the first region and continuous with the third conductor portion. The piezoelectric body includes a body portion located between the first and the second internal conductors, and formed with a through hole penetrating the body portion in the direction. The fourth conductor portion is located in the through hole and has a thickness increasing toward a center line of the through hole.

    VIBRATION POWER GENERATION ELEMENT
    7.
    发明公开
    VIBRATION POWER GENERATION ELEMENT 审中-公开

    公开(公告)号：US20230284535A1

    公开(公告)日：2023-09-07

    申请号：US18016715

    申请日：2022-03-02

    申请人： RESEARCH INSTITUTE FOR ELECTROMAGNETIC MATERIALS

    发明人： Yoshihiro KAWAKAMI

    IPC分类号： H10N30/30 ,  H10N30/87 ,  H10N30/853

    CPC分类号： H10N30/306 ,  H10N30/871 ,  H10N30/853

    摘要： Provided is a vibration power generation element that can have improved property of piezoelectricity and mechanical robustness, while having a reduced cost. A piezoelectric layer (20) is formed on a substrate (10), which is supported on a support member (11) in a cantilever state, with a dielectric layer (102) interposed there between. A pair of comb electrodes (41, 42) are formed on the piezoelectric layer (20) that include comb portions (412, 422) extending in a direction (i.e., transverse direction) perpendicular to the extension direction (i.e., longitudinal direction) of the substrate 10 and disposed so as to be fitted into one another.