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1. 发明申请

US20190260278A1 Mobile Apparatus Having Linear Actuator Generating Both Vibration and Sound 审中-公开
公开(公告)号：US20190260278A1
公开(公告)日：2019-08-22
申请号：US16280904
申请日：2019-02-20
申请人： EM-TECH Co., Ltd
发明人： Cheon Myeong Kim , Sung Chul Jung , Seul Ki Nam , Min Chul Kang
IPC分类号： H02K33/18
摘要： A mobile apparatus has a linear actuator configured to generate vibration and sound, and further includes: a display panel; a frame; and a linear actuator arranged on the frame and configured to vibrate at 50 to 300 Hz to generate a vibration signal or to vibrate at 50 to 20000 Hz to generate a sound signal. The frame encompasses a case for defining the external appearance with the display and an inner bracket on which electronic parts are to be arranged. As compared with a linear actuator that excites a display panel to generate only sound, the linear actuator that performs the vibration function should provide a strong vibration power, which may damage the display panel. This is the reason why the linear actuator is arranged on the frame, not on the display panel.

2. 发明申请

US20190259362A1 Hybrid Actuator and Multimedia Apparatus Having the Same 审中-公开
公开(公告)号：US20190259362A1
公开(公告)日：2019-08-22
申请号：US16280945
申请日：2019-02-20
申请人： EM-TECH Co., Ltd
发明人： Cheon Myeong Kim , Sung Chul Jung , Seul Ki Nam
IPC分类号： G10K9/122 , H04R9/02 , H04R1/22
摘要： A hybrid actuator includes a housing for defining an external appearance, a stator having a coil, a vibrator having a permanent magnet which vibrates due to a mutual electromagnetic force with the stator, an elastic member for elastically supporting the vibrator relative to the housing, and a piezoelectric element attached to one surface of the housing.

3. 发明申请

US20190104369A1 Sound Converter 审中-公开
公开(公告)号：US20190104369A1
公开(公告)日：2019-04-04
申请号：US16136921
申请日：2018-09-20
申请人： EM-TECH. Co., Ltd.
发明人： Cheon Myeong Kim , Sung Chul Jung , Seul Ki Nam , Gyung Bo Ha
IPC分类号： H04R9/04 , H04R7/20 , H04R7/04 , H04R31/00
CPC分类号： H04R9/043 , H04R7/04 , H04R7/20 , H04R9/022 , H04R9/025 , H04R9/045 , H04R9/06 , H04R31/003 , H04R31/006
摘要： A sound converter includes a rectangular frame, a first suspension seated on an upper side of the frame to vibrate, a second suspension attached to a bottom surface of the first suspension and electrically connected to a voice coil to vibrate, a magnetic circuit including a center magnet, a plurality of sub-magnets spaced apart from the center magnet by a certain distance to define a magnetic gap, a plurality of top plates positioned above the center magnet and each sub-magnet, and a bottom plate positioned below the center magnet and each sub-magnet, and a third suspension connecting a lower end or a lower end lateral surface of the voice coil to the frame to vibrate. The voice coil is attached to a bottom surface of the second suspension. The third suspension is positioned through spaces defined by the sub-magnets being spaced apart from each other.

4. 发明授权

US11462199B2 Hybrid actuator and multimedia apparatus having the same 有权
公开(公告)号：US11462199B2
公开(公告)日：2022-10-04
申请号：US16280945
申请日：2019-02-20
申请人： EM-TECH Co., Ltd
发明人： Cheon Myeong Kim , Sung Chul Jung , Seul Ki Nam
IPC分类号： G10K9/122 , H04R1/22 , H04R9/02
摘要： A hybrid actuator includes a housing for defining an external appearance, a stator having a coil, a vibrator having a permanent magnet which vibrates due to a mutual electromagnetic force with the stator, an elastic member for elastically supporting the vibrator relative to the housing, and a piezoelectric element attached to one surface of the housing.

5. 发明申请

US20210185449A1 Microspeaker Used in Microspeaker Box Filled with Porous Particles 有权
公开(公告)号：US20210185449A1
公开(公告)日：2021-06-17
申请号：US17120815
申请日：2020-12-14
申请人： EM-TECH Co., Ltd.
发明人： Cheon Myeong Kim , Sung Chul Jung , Sung Jin Hong
IPC分类号： H04R9/02 , H04R9/04
摘要： Disclosed is a microspeaker for use in a microspeaker box filled with porous particles. The microspeaker includes a frame having one surface as an open surface, a magnetic circuit including a yoke coupled to the frame, a magnet attached to the yoke, and a plate attached to the magnet, a voice coil configured to vibrate by mutual electromagnetic force with the magnetic circuit, a diaphragm allowing the voice coil to be attached thereto and configured to vibrate by the voice coil to generate sound, and a mesh coupled to the open surface of the frame.

6. 发明授权

US10728672B2 Sound converter 有权
公开(公告)号：US10728672B2
公开(公告)日：2020-07-28
申请号：US16136921
申请日：2018-09-20
申请人： EM-TECH. Co., Ltd.
发明人： Cheon Myeong Kim , Sung Chul Jung , Seul Ki Nam , Gyung Bo Ha
IPC分类号： H04R9/04 , H04R9/02 , H04R31/00 , H04R9/06 , H04R7/04 , H04R7/20
摘要： A sound converter includes a rectangular frame, a first suspension seated on an upper side of the frame to vibrate, a second suspension attached to a bottom surface of the first suspension and electrically connected to a voice coil to vibrate, a magnetic circuit including a center magnet, a plurality of sub-magnets spaced apart from the center magnet by a certain distance to define a magnetic gap, a plurality of top plates positioned above the center magnet and each sub-magnet, and a bottom plate positioned below the center magnet and each sub-magnet, and a third suspension connecting a lower end or a lower end lateral surface of the voice coil to the frame to vibrate. The voice coil is attached to a bottom surface of the second suspension. The third suspension is positioned through spaces defined by the sub-magnets being spaced apart from each other.

7. 发明申请

US20200221222A1 High-Water Pressure Waterproof Microspeaker 审中-公开
公开(公告)号：US20200221222A1
公开(公告)日：2020-07-09
申请号：US16731675
申请日：2019-12-31
申请人： EM-TECH Co., Ltd.
发明人： Cheon Myeong Kim , Sung Chul Jung , Sung Jin Hong
IPC分类号： H04R1/44 , H04R9/06 , H04R1/02 , H04R31/00 , H04R7/04
摘要： A waterproof speaker having a waterproof rating of 8 or more and that is capable of providing a waterproof function at a high water pressure is provided. The waterproof microspeaker includes: a frame comprising a sidewall and a flange portion extending outward from an upper edge of the sidewall; a vibrating portion within the frame; a diaphragm mounted on the flange portion of the frame; and a waterproof ring placed on a sidewall of the frame and configured to protrude further outward than the flange portion of the frame.

8. 发明授权

US11337006B2 Microspeaker used in microspeaker box filled with porous particles 有权
公开(公告)号：US11337006B2
公开(公告)日：2022-05-17
申请号：US17120815
申请日：2020-12-14
申请人： EM-TECH Co., Ltd.
发明人： Cheon Myeong Kim , Sung Chul Jung , Sung Jin Hong
IPC分类号： H04R1/02 , H04R9/02 , H04R9/04 , H04R1/28 , H04R1/08
摘要： Disclosed is a microspeaker for use in a microspeaker box filled with porous particles. The microspeaker includes a frame having one surface as an open surface, a magnetic circuit including a yoke coupled to the frame, a magnet attached to the yoke, and a plate attached to the magnet, a voice coil configured to vibrate by mutual electromagnetic force with the magnetic circuit, a diaphragm allowing the voice coil to be attached thereto and configured to vibrate by the voice coil to generate sound, and a mesh coupled to the open surface of the frame.

9. 发明申请

US20180332397A1 High Power Microspeaker with Sub-Diaphragm 审中-公开
公开(公告)号：US20180332397A1
公开(公告)日：2018-11-15
申请号：US15976198
申请日：2018-05-10
申请人： EM-TECH. Co., Ltd.
发明人： Cheon Myeong Kim , Ji Hoon Kim , Sung Chul Jung , Seul Ki Nam
IPC分类号： H04R7/12 , H04R7/04 , H04R9/02 , H04R9/06 , H04R9/04
CPC分类号： H04R7/127 , H04R7/04 , H04R9/025 , H04R9/045 , H04R9/06
摘要： The present invention relates to a high power microspeaker having a separate sub-diaphragm on a top end surface of a coil, in addition to a diaphragm and a suspension. The present invention provides a structure in which an acoustic system including a main diaphragm and a conductive suspension of a microspeaker is attached to a top end surface of a coil and a separate sub-diaphragm is attached to the same surface of the coil.

10. 发明申请

US20140301587A1 SLIM ENCLOSURE SPEAKER WITH SIDE ACOUSTIC EMISSION STRUCTURE 审中-公开
标题翻译：具有侧面声发射结构的SLIM外壳扬声器
公开(公告)号：US20140301587A1
公开(公告)日：2014-10-09
申请号：US14230567
申请日：2014-03-31
申请人： EM-TECH Co., Ltd.
发明人： Yong Ju Ji , Sung Chul Jung
IPC分类号： H04R1/02
CPC分类号： H04R1/021 , H04R1/025 , H04R2201/029
摘要： A slim enclosure speaker is provided with a side acoustic emission structure, which can make the enclosure speaker slimmer by maximizing a sound-emitting hole in the same size, while improving SPL characteristics. The slim enclosure speaker with the side acoustic emission structure includes: a microspeaker; a lower case enclosing the lower side of the microspeaker and defining a resonance space; an upper case having a fixing surface to which top edges of the microspeaker are fixed, defining the resonance space together with the lower case, and having a hole inside the fixing surface; a cover coupled onto the upper case and covering the hole; and an acoustic passage defined by one side of the upper case and the cover, wherein the fixing surface is insert injection-molded using a steel.
摘要翻译：一个细长的外壳扬声器设有侧声发射结构，通过最大限度地发挥相同大小的发声孔，同时提高SPL特性，可以使外壳扬声器更加纤薄。具有侧声发射结构的超薄外壳扬声器包括：微型扬声器; 包围微型扬声器的下侧并限定共振空间的下壳体; 具有固定表面的上壳体，所述固定表面固定在所述固定表面上，所述固定表面与所述下壳体一起限定所述共振空间，并且在所述固定表面内具有孔; 覆盖在所述上壳体上并覆盖所述孔的盖; 以及由上壳体和盖的一侧限定的声通道，其中固定表面是使用钢注射成型的。

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