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1. 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.

2. 发明授权

US10419848B2 Microspeaker enclosure with porous materials in resonance space 有权
公开(公告)号：US10419848B2
公开(公告)日：2019-09-17
申请号：US15617603
申请日：2017-06-08
申请人： EM-TECH. Co., Ltd.
发明人： Kyu Dong Choi , Seul Ki Nam , Heung Woo Jeong
IPC分类号： H04R25/00 , H04R1/28 , H04R1/02 , H04R31/00
摘要： The present invention discloses a microspeaker enclosure with porous materials, including a microspeaker, an enclosure with the microspeaker therein, the enclosure defining a resonance space and having an upper casing and a lower casing, a sound absorber arranged in the resonance space and defining a space, and porous materials filled in the space defined by the sound absorber.

3. 发明授权

US10516945B2 High power microspeaker with sub-diaphragm 有权
公开(公告)号：US10516945B2
公开(公告)日：2019-12-24
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 , H04R9/04 , H04R9/06 , H04R9/02
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.

4. 发明申请

US20170359649A1 Microspeaker Enclosure with Porous Materials in Resonance Space 有权
公开(公告)号：US20170359649A1
公开(公告)日：2017-12-14
申请号：US15617603
申请日：2017-06-08
申请人： EM-TECH. Co., Ltd.
发明人： Kyu Dong Choi , Seul Ki Nam , Heung Woo Jeong
IPC分类号： H04R1/28 , H04R31/00 , H04R1/02
CPC分类号： H04R1/288 , H04R1/025 , H04R31/00 , H04R2201/029 , H04R2499/11
摘要： The present invention discloses a microspeaker enclosure with porous materials, including a microspeaker, an enclosure with the microspeaker therein, the enclosure defining a resonance space and having an upper casing and a lower casing, a sound absorber arranged in the resonance space and defining a space, and porous materials filled in the space defined by the sound absorber.

5. 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.

6. 发明申请

US20160173990A1 Slim Microspeaker 有权
标题翻译：超薄型扬声器
公开(公告)号：US20160173990A1
公开(公告)日：2016-06-16
申请号：US14968295
申请日：2015-12-14
申请人： EM-TECH. Co., Ltd.
发明人： Kil Dong Park , Seul Ki Nam , Ji Hoon Kim , Min Chang Kim
IPC分类号： H04R9/06 , H04R7/12
CPC分类号： H04R1/06 , H04R7/04 , H04R7/18 , H04R9/043
摘要： A microspeaker includes a frame, magnetic circuit, voice coil configured to generate vibration by mutual electromagnetic force with the magnetic circuit, vibration plate configured to vibrate together according to the vibration of the voice coil to generate a sound, and suspension configured to guide a vibration direction of the vibration plate and voice coil. The suspension has a central portion attached to the voice coil, an annular outer circumferential portion formed to be spaced apart from the central portion by a predetermined interval, and a connection portion connecting the central and outer circumferential portions and configured to perform a damping function. The central portion has an outer end having the same height as the connection and outer circumferential portions, an inner end positioned to be higher than the outer end, and a step portion connecting the outer end and inner end. The voice coil is attached to the inner end.
摘要翻译：微型扬声器包括框架，磁路，被配置为通过与磁路相互电磁力产生振动的音圈，振动板根据音圈的振动产生振动，构造成一起振动以产生声音;以及悬架构造成引导振动方向振动板和音圈。悬架具有附接到音圈的中心部分，形成为与中心部分间隔预定间隔的环形外圆周部分，以及连接中心部分和外周部分并被构造成执行阻尼功能的连接部分。中心部具有与连接部和外周部相同高度的外端，位于高于外端的内端，以及连接外端和内端的台阶部。音圈连接到内端。

7. 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.

8. 发明授权

US09832557B2 Slim microspeaker 有权
公开(公告)号：US09832557B2
公开(公告)日：2017-11-28
申请号：US14968295
申请日：2015-12-14
申请人： EM-TECH. Co., Ltd.
发明人： Kil Dong Park , Seul Ki Nam , Ji Hoon Kim , Min Chang Kim
IPC分类号： H04R25/00 , H04R1/06 , H04R9/04 , H04R7/04 , H04R7/18
CPC分类号： H04R1/06 , H04R7/04 , H04R7/18 , H04R9/043
摘要： A microspeaker includes a frame, magnetic circuit, voice coil configured to generate vibration by mutual electromagnetic force with the magnetic circuit, vibration plate configured to vibrate together according to the vibration of the voice coil to generate a sound, and suspension configured to guide a vibration direction of the vibration plate and voice coil. The suspension has a central portion attached to the voice coil, an annular outer circumferential portion formed to be spaced apart from the central portion by a predetermined interval, and a connection portion connecting the central and outer circumferential portions and configured to perform a damping function. The central portion has an outer end having the same height as the connection and outer circumferential portions, an inner end positioned to be higher than the outer end, and a step portion connecting the outer end and inner end. The voice coil is attached to the inner end.

9. 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.

10. 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.

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