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1. 发明公开

EP4068804A1 LOUDSPEAKER, LOUDSPEAKER MODULE, AND ELECTRONIC DEVICE 审中-实审
公开(公告)号：EP4068804A1
公开(公告)日：2022-10-05
申请号：EP21738865.1
申请日：2021-01-05
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： YU, Ligang , ZHU, Tong , LI, Yingming , SU, Jie , CHANG, Jing , WU, Guimin
IPC分类号： H04R9/06 , H04R9/02
摘要： Embodiments of this application disclose a speaker, a speaker module, and an electronic device. The speaker includes a support, a first diaphragm, a first piezoelectric plate, and a moving coil speaker core. Peripheral edges of the first diaphragm are fastened to the support, and the first piezoelectric plate is fastened to a middle part of the first diaphragm. The moving coil speaker core is fastened to the support and is spaced from the first diaphragm. The moving coil speaker core includes a second diaphragm. The second diaphragm is disposed facing the first diaphragm. The second diaphragm, the support, and the first diaphragm jointly enclose a front cavity. The support is provided with a speaker hole, and the speaker hole connects the front cavity and external space of the speaker. The first diaphragm and the second diaphragm of the speaker are disposed opposite each other and share the front cavity, to complement medium-frequency and high-frequency responses of the speaker and improve overall loudness of the speaker.

2. 发明公开

EP4096241A1 TERMINAL PROTECTION SHELL AND AUDIO PLAYING SYSTEM 审中-实审
公开(公告)号：EP4096241A1
公开(公告)日：2022-11-30
申请号：EP21761893.3
申请日：2021-01-28
申请人： Huawei Technologies Co., Ltd.
发明人： LUO, Junqing , SU, Jie , YU, Ligang , LIU, Fanfan , CHANG, Jing , LI, Shizhe , CHEN, Senjun
IPC分类号： H04R9/06 , H04R1/02 , H04R17/00
摘要： This application discloses a terminal protective case and an audio playback system. The audio playback system includes a terminal protective case and a terminal mounted in the terminal protective case. The terminal protective case has a piezoelectric speaker, and the piezoelectric speaker can make a sound under control of the terminal. Therefore, the piezoelectric speaker can make a sound together with a speaker of the terminal, so that the audio playback system has high loudspeaker volume.

3. 发明公开

EP3920553A1 SPEAKER, SPEAKER COMPONENT, AND PORTABLE ELECTRONIC DEVICE 审中-实审
公开(公告)号：EP3920553A1
公开(公告)日：2021-12-08
申请号：EP20763055.9
申请日：2020-02-21
申请人： Huawei Technologies Co., Ltd.
发明人： YU, Ligang
IPC分类号： H04R9/06
摘要： The present invention provides a loudspeaker, including a first diaphragm group, a second diaphragm group, and a first voice coil, a second voice coil, and a magnetic circuit system that are located between the first diaphragm group and the second diaphragm group. The first diaphragm group, the second diaphragm group, the first voice coil, and the second voice coil are disposed on a same center line. The first voice coil is disposed on the first diaphragm group. The second voice coil is disposed on the second diaphragm group. A magnetic field generated by the magnetic circuit system intersects with the center line. The first voice coil is spaced opposite to the second voice coil. The first voice coil and the second voice coil are at least partially located in the magnetic field generated by the magnetic circuit system, and have opposite vibration directions. The first voice coil and the second voice coil respectively provide vibration forces for the first diaphragm group and the second diaphragm group, so that the first diaphragm group and the second diaphragm group produce sound in two opposite directions.

4. 发明公开

EP4187923A1 ELECTROACOUSTIC TRANSDUCER, LOUDSPEAKER MODULE AND ELECTRONIC DEVICE 审中-实审
公开(公告)号：EP4187923A1
公开(公告)日：2023-05-31
申请号：EP21860156.5
申请日：2021-08-12
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Jinhua , YAN, Tao , GUO, Li , YEH, Chien Feng , YU, Ligang
IPC分类号： H04R9/02
摘要： This application provides an electroacoustic transducer, a speaker module, and an electronic device, to improve sensitivity of the electroacoustic transducer. The electroacoustic transducer includes a central magnet, two side magnets, a lower electrode plate, a side electrode plate, a frame, a sound diaphragm, a voice coil, and two flexible circuit boards. The central magnet and the two side magnets are respectively disposed on the lower electrode plate. The central magnet includes a first corner part and a second corner part that are diagonally disposed. The two side magnets are disposed centrosymmetrically around the first corner part and the second corner part respectively, and a first gap exists between the side magnet and the central magnet. The side electrode plate is disposed on a surface that is of the two side magnets and that is opposite to the lower electrode plate. One surface of the frame is fixedly connected to a surface that is of the side electrode plate and that is opposite to the lower electrode plate, and the other surface of the frame is fixedly connected to the sound diaphragm. The voice coil is located inside the frame, one end of the voice coil is fixedly connected to the sound diaphragm, and the other end is inserted into the first gap. The two flexible circuit boards are symmetrically distributed on a peripheral side of the voice coil, one end of the flexible circuit board is connected to the voice coil, and the other end is connected to the side electrode plate.

5. 发明公开

EP4132005A1 SPEAKER CORE, SPEAKER, AND ELECTRONIC DEVICE 审中-实审
公开(公告)号：EP4132005A1
公开(公告)日：2023-02-08
申请号：EP21788384.2
申请日：2021-03-23
申请人： Huawei Technologies Co., Ltd.
发明人： YU, Ligang , WU, Guimin , LIU, Jinhua , LIU, Wei , YEH, Chien Feng
IPC分类号： H04R9/06
摘要： Embodiments of this application provide a speaker core, a speaker, and an electronic device. At least one bent part of a diaphragm folded ring is moved above a top of a diaphragm frame and is suspended above the diaphragm frame. In this way, the at least one bent part suspended above the top of the diaphragm frame does not occupy vibration space enclosed by an inner sidewall of the diaphragm frame, and saved space can be used by a diaphragm mass. Therefore, in the speaker core provided in embodiments of this application, when it is ensured that a width of the diaphragm folded ring is not reduced, an area of the diaphragm mass can be increased, and an effective vibration area is increased, to increase a sound pressure level of the speaker in a full frequency band range. In addition, a case in which a nonlinear problem between driving force of the speaker and an amplitude of a diaphragm is aggravated due to an excessively small width of an arc-shaped portion of the diaphragm folded ring is avoided, to ensure that increase of an amplitude of the speaker is not inhibited.

6. 发明公开

EP3917165A1 VIBRATION SOUNDING DEVICE AND ELECTRONIC APPARATUS 审中-实审
公开(公告)号：EP3917165A1
公开(公告)日：2021-12-01
申请号：EP20774609.0
申请日：2020-02-24
申请人： Huawei Technologies Co., Ltd.
发明人： SU, Jie , ZHU, Tong , YU, Ligang , LI, Chunjian
IPC分类号： H04R9/06
摘要： An electronic device provided in embodiments includes a main body, a display disposed on the main body, and a sound-making assembly. The sound-making assembly includes a speaker box and a driving diaphragm located in the speaker box, the speaker box is disposed inside the main body or is formed by using the main body and the display, the main body is provided with a speaker grille corresponding to the speaker box, the driving diaphragm is fastened inside the speaker box and divides the speaker box into two sub-chambers, the speaker grille is connected to one of the sub-chambers, the driving diaphragm vibrates after receiving an audio signal, the driving diaphragm drives, through vibration of the driving diaphragm, air in the two sub-chambers to vibrate to make a sound, and the sound is spread through the speaker grille.

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