-
公开(公告)号：US20240022852A1
公开(公告)日：2024-01-18
申请号：US18349290
申请日：2023-07-10
申请人： EM-TECH Co., Ltd.
发明人： Jae Hwa Lim , Young Uk Jo , Dong Hyun Yun
CPC分类号： H04R1/288 , H04R1/2811 , H05K1/189 , H04R2400/11
摘要： A microspeaker enclosure includes a microspeaker, an enclosure case in which the microspeaker is mounted, including a back volume communicating with the microspeaker, a block installed in the back volume and formed of a porous material serving as a virtual back volume by adsorbing air, and porous particles installed in the back volume and serving as a virtual back volume by adsorbing air.
-
公开(公告)号：US20240022851A1
公开(公告)日：2024-01-18
申请号：US18219893
申请日：2023-07-10
申请人： EM-TECH Co., Ltd.
发明人： Yong Hee Oh , Young Uk Jo , Dong Hyun Yun
CPC分类号： H04R1/288 , H04R1/02 , H04R2201/003
摘要： Provided is a block formed of a porous material. In the block formed of a porous material, which is mounted together with a microspeaker in an enclosure case to adsorb air to serve as a virtual back volume, the block is manufactured by blocking porous particles including silicon and aluminum, and in a pore diameter of the porous block, dV/dlog(D) pore volume at 20 nm is 0.1 cm3/g or more.
-
公开(公告)号：US20230156405A1
公开(公告)日：2023-05-18
申请号：US17986480
申请日：2022-11-14
申请人： EM-TECH Co., Ltd.
发明人： Byung Min Yu , Jae Hwa Lim , Young Uk Jo , Yong Hee Oh , Yong Dae So
摘要： A microspeaker in which a diaphragm and a voice coil are replaced with a flexible printed circuit board (FPCB) is provided. The microspeaker includes: a magnetic circuit having a yoke and a magnet; and an FPCB diaphragm installed on the magnetic circuit and having a conductive coil pattern formed on a non-conductive film. When an electric signal is applied to the conductive coil pattern of the FPCB diaphragm, the FPCB diaphragm vibrates by mutual electromagnetic force with the magnetic circuit to generate sound.
-
公开(公告)号：US10902984B2
公开(公告)日：2021-01-26
申请号：US16173775
申请日：2018-10-29
申请人： EM-TECH. Co., Ltd.
发明人： Ki Hyun Nam , Jae Baek Jang , Young Uk Jo
摘要： A linear actuator having an elastic injection-molded frame includes a yoke, a permanent magnet attached to a bottom surface of the yoke at a distance from a side surface of the yoke, a top plate attached to a top surface of the permanent magnet, a frame coupled to an outer periphery of the yoke and injection-molded with an elastic material, a protector disposed on the frame, and a coil secured to the protector, with a lower end positioned between the permanent magnet and the side surface of the yoke. The frame includes a yoke coupling portion coupled to the yoke, a fixing portion spaced apart from the yoke coupling portion and coupled to the protector, and two or more bridges for elastically connecting the yoke coupling portion and the fixing portion.
-
公开(公告)号：US20190131045A1
公开(公告)日：2019-05-02
申请号：US16173775
申请日：2018-10-29
申请人： EM-TECH. Co., Ltd.
发明人： Ki Hyun Nam , Jae Baek Jang , Young Uk Jo
摘要： A linear actuator having an elastic injection-molded frame includes a yoke, a permanent magnet attached to a bottom surface of the yoke at a distance from a side surface of the yoke, a top plate attached to a top surface of the permanent magnet, a frame coupled to an outer periphery of the yoke and injection-molded with an elastic material, a protector disposed on the frame, and a coil secured to the protector, with a lower end positioned between the permanent magnet and the side surface of the yoke. The frame includes a yoke coupling portion coupled to the yoke, a fixing portion spaced apart from the yoke coupling portion and coupled to the protector, and two or more bridges for elastically connecting the yoke coupling portion and the fixing portion.
-
-
-
-
搜索结果
5 条记录 (耗时 0.012 秒)
