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1.发明公开公开(公告)号：US20230156406A1
公开(公告)日：2023-05-18
申请号：US17986979
申请日：2022-11-15
申请人： EM-TECH Co., Ltd.
发明人： Byung Min Yu , Ji Young Lee
摘要： Provided are a diaphragm for a high water pressure waterproof microspeaker and a high pressure waterproof microspeaker including the same. The diaphragm for a high pressure waterproof microspeaker, which is provided in a microspeaker to reproduce sound, includes a center diaphragm and a side diaphragm, includes a center diaphragm attachment portion having a ring shape with a perforated center overall and attached to an outer periphery of the center diaphragm, a frame attachment portion attached to a frame, and a dome portion located between the center diaphragm attachment portion and the frame attachment portion and protruding upwardly or downwardly. The center diaphragm attachment portion of the side diaphragm includes an upper attachment portion attached to an upper surface of the center diaphragm and a lower attachment portion attached to a lower surface of the center diaphragm.
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公开(公告)号：US20190334076A1
公开(公告)日：2019-10-31
申请号：US16394170
申请日：2019-04-25
申请人： EM-TECH. Co., Ltd.
发明人： Cheon Myeong Kim , Ji Young Lee , Byung Ho Jung
摘要： A hybrid actuator is provided in which a piezoelectric element and an actuator are incorporated with each other. The hybrid actuator includes: a housing; a stator secured to the housing and having a coil; a vibrator having a permanent magnet configured to vibrate due to a mutual electromagnetic force with the stator; an elastic member configured to elastically support the vibrator relative to the housing; a piezoelectric element attached to one surface of the housing; and an F-PCB (flexible printed circuit board) applying an electric current to the piezoelectric element and the coil inside the housing. A part of the F-PCB extends outside the housing. Input terminals are formed on the part of the F-PCB which extends outside the housing. The input terminals are configured to receive a vibration signal and an audio signal so that the hybrid actuator can reproduce both the vibration signal and the audio signal.
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公开(公告)号：US11696508B2
公开(公告)日：2023-07-04
申请号：US17107993
申请日：2020-12-01
申请人： EM-TECH Co., Ltd.
发明人： Cheon Myeong Kim , Byung Min Yu , Jae Hwa Lim , Jeong Ae Ha , Ji Young Lee , Byung Ho Jung
IPC分类号： H01L41/113 , H01L41/053 , H10N30/30 , H10N30/88
CPC分类号： H10N30/306 , H10N30/886
摘要： Disclosed is a sound vibration sensor using a piezoelectric element having a cantilever structure. The sound vibration sensor includes a housing forming an exterior, a piezoelectric element having a cantilever structure installed in the housing, a support structure supporting a fixed end of the piezoelectric element, a weight attached to a free end of the piezoelectric element, and an energizing part configured to transmit an output from the piezoelectric element, wherein the sound vibration sensor comes into contact with a speaker's body, receives vibration of the body generated when the speaker utters a sound through the housing, and amplifies the vibration by the free end of the piezoelectric element to detect the voice vibration of the speaker using a piezoelectric characteristic of the piezoelectric element.
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公开(公告)号：US20210168492A1
公开(公告)日：2021-06-03
申请号：US17101422
申请日：2020-11-23
申请人： EM-TECH Co., Ltd.
发明人： Cheon Myeong Kim , Byung Min Yu , Jae Hwa Lim , Jeong Ae Ha , Ji Young Lee
摘要： Disclosed is a translation system using a sound vibration microphone capable of fundamentally blocking noise by detecting vibrations generated from a user's voice using a piezo element. The translation system using a sound vibration microphone includes a first earset including a sound vibration sensor and a speaker, a first wearable acoustic device including a microphone and a speaker and performing wireless communication with the first earset, and a first electronic communication device performing wireless communication with the first wearable acoustic device and performing communication with a translation server, wherein the first wearable acoustic device and the first electronic communication device are in a communicatable state.
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公开(公告)号：US11206490B2
公开(公告)日：2021-12-21
申请号：US16892405
申请日：2020-06-04
申请人： EM-TECH Co., Ltd.
发明人： Cheon Myeong Kim , Jae Hwa Lim , Jeong Ae Ha , Ji Young Lee , Byung Ho Jung
摘要： The present invention is intended to provide a sound generating actuator which can facilitate heat dissipation from a voice coil. According to the present invention, there is provided a sound generating actuator, including: a frame; a stationary part mounted on the frame and provided with a yoke, a magnet and a top plate to compose a magnetic circuit; a voice coil configured to receive an electrical signal and vibrate due to a magnetic field and mutual electromagnetic force of the stationary part; a spring configured to dampen vibration of the voice coil and that is made of a metallic material and secured to the frame; and a contact pad that is attached to the spring and configured to transfer vibration of the voice coil.
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公开(公告)号：US20200296526A1
公开(公告)日：2020-09-17
申请号：US16814570
申请日：2020-03-10
申请人： EM-TECH Co., Ltd.
发明人： Cheon Myeong Kim , Jae Hwa Lim , Jeong Ae Ha , Ji Young Lee , Byung Ho Jung , Sung Jin Hong
摘要： A bone conduction speaker is provided. The bone conduction speaker includes: a housing forming an exterior; a stator including a pole piece fitted to a bottom of the housing and a voice coil arranged to an outer circumference of the pole piece; a vibrator including a permanent magnet mounted concentrically with the pole piece and voice coil, with an air gap from the pole piece, a weight attached to the permanent magnet to increase a vibration force, and a yoke attached to the permanent magnet and weight; a flexible printed circuit board mounted on the bottom of the housing, part of which extends out of the housing, and configured to transmit a signal to the voice coil; and a bone conduction pad attached to an outer surface of the housing. The vibration of the vibrator is transmitted to a bone of a user through the housing and bone conduction pad.
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公开(公告)号：US11425487B2
公开(公告)日：2022-08-23
申请号：US17101422
申请日：2020-11-23
申请人： EM-TECH Co., Ltd.
发明人： Cheon Myeong Kim , Byung Min Yu , Jae Hwa Lim , Jeong Ae Ha , Ji Young Lee
摘要： Disclosed is a translation system using a sound vibration microphone capable of fundamentally blocking noise by detecting vibrations generated from a user's voice using a piezo element. The translation system using a sound vibration microphone includes a first earset including a sound vibration sensor and a speaker, a first wearable acoustic device including a microphone and a speaker and performing wireless communication with the first earset, and a first electronic communication device performing wireless communication with the first wearable acoustic device and performing communication with a translation server, wherein the first wearable acoustic device and the first electronic communication device are in a communicatable state.
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公开(公告)号：US11302861B2
公开(公告)日：2022-04-12
申请号：US16394170
申请日：2019-04-25
申请人： EM-TECH. Co., Ltd.
发明人： Cheon Myeong Kim , Ji Young Lee , Byung Ho Jung
摘要： A hybrid actuator is provided in which a piezoelectric element and an actuator are incorporated with each other. The hybrid actuator includes: a housing; a stator secured to the housing and having a coil; a vibrator having a permanent magnet configured to vibrate due to a mutual electromagnetic force with the stator; an elastic member configured to elastically support the vibrator relative to the housing; a piezoelectric element attached to one surface of the housing; and an F-PCB (flexible printed circuit board) applying an electric current to the piezoelectric element and the coil inside the housing. A part of the F-PCB extends outside the housing. Input terminals are formed on the part of the F-PCB which extends outside the housing. The input terminals are configured to receive a vibration signal and an audio signal so that the hybrid actuator can reproduce both the vibration signal and the audio signal.
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公开(公告)号：US11206500B2
公开(公告)日：2021-12-21
申请号：US16814570
申请日：2020-03-10
申请人： EM-TECH Co., Ltd.
发明人： Cheon Myeong Kim , Jae Hwa Lim , Jeong Ae Ha , Ji Young Lee , Byung Ho Jung , Sung Jin Hong
摘要： A bone conduction speaker is provided. The bone conduction speaker includes: a housing forming an exterior; a stator including a pole piece fitted to a bottom of the housing and a voice coil arranged to an outer circumference of the pole piece; a vibrator including a permanent magnet mounted concentrically with the pole piece and voice coil, with an air gap from the pole piece, a weight attached to the permanent magnet to increase a vibration force, and a yoke attached to the permanent magnet and weight; a flexible printed circuit board mounted on the bottom of the housing, part of which extends out of the housing, and configured to transmit a signal to the voice coil; and a bone conduction pad attached to an outer surface of the housing. The vibration of the vibrator is transmitted to a bone of a user through the housing and bone conduction pad.
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公开(公告)号：US20210167275A1
公开(公告)日：2021-06-03
申请号：US17107993
申请日：2020-12-01
申请人： EM-TECH Co., Ltd.
发明人： Cheon Myeong Kim , Byung Min Yu , Jae Hwa Lim , Jeong Ae Ha , Ji Young Lee , Byung Ho Jung
IPC分类号： H01L41/113 , H01L41/053
摘要： Disclosed is a sound vibration sensor using a piezoelectric element having a cantilever structure. The sound vibration sensor includes a housing forming an exterior, a piezoelectric element having a cantilever structure installed in the housing, a support structure supporting a fixed end of the piezoelectric element, a weight attached to a free end of the piezoelectric element, and an energizing part configured to transmit an output from the piezoelectric element, wherein the sound vibration sensor comes into contact with a speaker's body, receives vibration of the body generated when the speaker utters a sound through the housing, and amplifies the vibration by the free end of the piezoelectric element to detect the voice vibration of the speaker using a piezoelectric characteristic of the piezoelectric element.
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