WO2024207471A1 - Loudspeaker with alarm function - Google Patents
Loudspeaker with alarm function Download PDFInfo
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- WO2024207471A1 WO2024207471A1 PCT/CN2023/087013 CN2023087013W WO2024207471A1 WO 2024207471 A1 WO2024207471 A1 WO 2024207471A1 CN 2023087013 W CN2023087013 W CN 2023087013W WO 2024207471 A1 WO2024207471 A1 WO 2024207471A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Definitions
- the invention relates to the field of electroacoustic conversion, and in particular to a loudspeaker with an alarm function.
- the object of the present invention is to overcome the above technical problems and provide a loudspeaker with an alarm function while also having the acoustic performance of a conventional loudspeaker.
- the present invention provides a loudspeaker with an alarm function, comprising a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system fixed to the basin frame for driving the vibration system to vibrate and generate sound, the vibration system comprising a diaphragm, a voice coil, and a frame, the diaphragm comprising a first vibration part located in the middle, a first folding ring part extending outward from the outer periphery of the first vibration part, a ring-shaped second vibration part extending outward from the outer periphery of the first folding ring part, a second folding ring part extending outward from the outer periphery of the second vibration part, a fixing part fixed to the basin frame extending outward from the outer periphery of the second folding ring part, a first dome fixed to the lower surface of the first vibration part, and a second dome fixed to the lower surface of the second vibration part, the voice coil comprising a first voice coil and
- the magnetic circuit system includes a yoke and a magnet portion fixed to the yoke
- the yoke includes a base plate and a side wall bent and extended from the long axis of the base plate
- the magnet portion includes a first magnet fixed to the base plate, a first pole core fixed to the first magnet, a second magnet fixed to the first pole core, a third magnet fixed to the first pole core and arranged on both sides of the long axis of the second magnet, a second pole core fixed to the second magnet and a third pole core fixed to the third magnet, the second magnet and the second pole core are spaced from the third magnet and the third pole core to form the first magnetic gap, and the magnet portion and the side wall are spaced from the second magnetic gap.
- the polarities of the magnetic poles of the first magnetic steel and the second magnetic steel relative to each other are opposite, and the polarities of the magnetic poles of the first magnetic steel and the third magnetic steel relative to each other are the same.
- the basin frame includes a plastic bracket fixed to the short axis side of the bottom plate and a metal frame fixedly connected to the diaphragm, and the metal frame is fixed to the plastic bracket and the side wall.
- the plastic bracket comprises a pair of clamping arms for clamping the bottom plate, and the clamping arms abut against the side walls.
- the speaker with alarm function further comprises a front cover plate, the front cover plate is provided with a sound outlet hole, and the front cover plate, the fixing part and the metal frame are integrally injection molded.
- the vibration system further comprises a flexible circuit board, one end of the flexible circuit board is sandwiched between the second frame and the second voice coil, and the other end of the flexible circuit board is fixed to the plastic bracket and passes through the metal frame.
- the frequency response curve of the loudspeaker with alarm function of the present invention has a peak at 2-4 kHz.
- no signal processing is performed at 2-4 kHz, and the alarm is directly sounded.
- the 2-4 kHz peak can be compressed to the same sensitivity as a conventional loudspeaker through signal processing, thereby having the acoustic performance of a conventional loudspeaker.
- FIG1 is a perspective view of a loudspeaker with an alarm function according to the present invention.
- FIG2 is a perspective exploded view of a loudspeaker with an alarm function according to the present invention.
- Fig. 3 is a cross-sectional view along line A-A in Fig. 1;
- Fig. 4 is a cross-sectional view along line B-B in Fig. 1;
- FIG. 5 is a frequency response curve diagram of the loudspeaker with alarm function according to the present invention.
- the present invention provides a loudspeaker 100 with an alarm function.
- the loudspeaker 100 with an alarm function includes a basin frame 1, a vibration system 2 fixed to the basin frame 1, and a magnetic circuit system 3 fixed to the basin frame 1 for driving the vibration system 2 to vibrate and produce sound.
- the vibration system 2 includes a diaphragm 21, a voice coil 22 and a skeleton 23.
- the diaphragm 21 includes a first vibration part 211 located in the middle, a first folding ring part 212 extending outward from the outer periphery of the first vibration part 211, a ring-shaped second vibration part 213 extending outward from the outer periphery of the first folding ring part 212, a second folding ring part 214 extending outward from the outer periphery of the second vibration part 213, a fixing part 215 extending outward from the outer periphery of the second folding ring part 214 and fixed to the basin frame 1, a first dome 216 fixed to the lower surface of the first vibration part 211, and a second dome 217 fixed to the lower surface of the second vibration part 213.
- the voice coil 22 includes a first voice coil 221 and a second voice coil 222 surrounding the outer side of the first voice coil 221.
- the skeleton 23 includes a first skeleton 231 connecting the first dome 216 and the first voice coil 221, and a second skeleton 232 connecting the second dome 217 and the second voice coil 222.
- the magnetic circuit system 3 is provided with a first magnetic gap 301 and a second magnetic gap 302 .
- the first voice coil 221 is inserted in the first magnetic gap 301
- the second voice coil 222 is inserted in the second magnetic gap 302 .
- the magnetic circuit system 3 includes a yoke 31 and a magnetic portion 32 fixed to the yoke 31, the yoke 31 includes a bottom plate 311 and a side wall 312 bent and extended from the long axis side of the bottom plate 311, the magnetic portion 32 includes a first magnetic steel 321 fixed to the bottom plate 311, a first pole core 322 fixed to the first magnetic steel 321, a second magnetic steel 323 fixed to the first pole core 322, a third magnetic steel 324 fixed to the first pole core 322 and arranged on both sides of the long axis of the second magnetic steel 323, a second pole core 325 fixed to the second magnetic steel 323 and a third pole core 326 fixed to the third magnetic steel 324, the second magnetic steel 323 and the second pole core 325 are spaced from the third magnetic steel 324 and the third pole core 326 to form the first magnetic gap 301, and the magnetic portion 32 is spaced from the side wall 312 to form the second magnetic gap 302.
- the loudspeaker 100 with alarm function further includes a front cover plate 4 , the front cover plate 4 is provided with a sound outlet hole 41 , and the front cover plate 4 , the fixing portion 215 and the metal frame 12 are integrally injection molded.
- the vibration system 2 also includes a flexible circuit board 24, one end 241 of the flexible circuit board 24 is sandwiched between the second frame 232 and the second voice coil 222, and the other end 242 of the flexible circuit board 24 is fixed to the plastic bracket 11 and passes through the metal frame 12, so as to be electrically connected to the external circuit.
- the frequency response curve of the loudspeaker with alarm function of the present invention has a peak at 2-4 kHz, as shown in FIG5 .
- an alarm is required, no signal processing is performed at 2-4 kHz, and the alarm is directly sounded.
- the 2-4 kHz peak can be compressed to the same sensitivity as a conventional loudspeaker through signal processing, thereby having the acoustic performance of a conventional loudspeaker.
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- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
【 技术领域】 [ Technical field ]
本发明涉及电声转换领域，尤其涉及一种具有警报功能的扬声器。The invention relates to the field of electroacoustic conversion, and in particular to a loudspeaker with an alarm function.
【 背景技术】 [ Background technology ]
由于某些安全场景的应用需要会要求电子设备能够在2-4 kHz发出高分贝值的声音进行警报，用于呼救。然而，常规的扬声器的频响曲线是一条近似平坦的曲线，不能满足进行警报的应用需要。Due to the application needs of some safety scenarios, electronic devices are required to emit high-decibel sounds at 2-4 kHz for alarms and to call for help. However, the frequency response curve of conventional speakers is an approximately flat curve, which cannot meet the application needs of alarms.
因此，实有必要提供一种新的具有警报功能的扬声器解决上述技术问题。Therefore, it is necessary to provide a new loudspeaker with alarm function to solve the above-mentioned technical problems.
【 发明内容】 [ Summary of the invention ]
本发明的目的是克服上述技术问题，提供一种具有警报功能的扬声器，同时还具有常规的扬声器的声学性能。The object of the present invention is to overcome the above technical problems and provide a loudspeaker with an alarm function while also having the acoustic performance of a conventional loudspeaker.
为了实现上述目的，本发明提供一种具有警报功能的扬声器，包括盆架、固定于所述盆架的振动系统和固定于所述盆架的驱动所述振动系统振动发声的磁路系统，所述振动系统包括振膜、音圈和骨架，所述振膜包括位于中间位置的第一振动部、自所述第一振动部的外周缘向外延伸的第一折环部、自所述第一折环部的外周缘向外延伸的环形的第二振动部、自所述第二振动部的外周缘向外延伸的第二折环部、自所述第二折环部的外周缘向外延伸的固定于所述盆架的固定部、固定于所述第一振动部下表面的第一球顶和固定于所述第二振动部下表面的第二球顶，所述音圈包括第一音圈和环绕于所述第一音圈外侧的第二音圈，所述骨架包括连接所述第一球顶和所述第一音圈的第一骨架以及连接所述第二球顶和所述第二音圈的第二骨架，所述磁路系统设有第一磁间隙和第二磁间隙，所述第一音圈插设于所述第一磁间隙，所述第二音圈插设于所述第二磁间隙。In order to achieve the above-mentioned object, the present invention provides a loudspeaker with an alarm function, comprising a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system fixed to the basin frame for driving the vibration system to vibrate and generate sound, the vibration system comprising a diaphragm, a voice coil, and a frame, the diaphragm comprising a first vibration part located in the middle, a first folding ring part extending outward from the outer periphery of the first vibration part, a ring-shaped second vibration part extending outward from the outer periphery of the first folding ring part, a second folding ring part extending outward from the outer periphery of the second vibration part, a fixing part fixed to the basin frame extending outward from the outer periphery of the second folding ring part, a first dome fixed to the lower surface of the first vibration part, and a second dome fixed to the lower surface of the second vibration part, the voice coil comprising a first voice coil and a second voice coil surrounding the outer side of the first voice coil, the frame comprising a first frame connecting the first dome and the first voice coil, and a second frame connecting the second dome and the second voice coil, the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap, the first voice coil is inserted in the first magnetic gap, and the second voice coil is inserted in the second magnetic gap.
优选的，所述磁路系统包括磁轭和固定于所述磁轭的磁体部，所述磁轭包括底板和自所述底板的长轴边弯折延伸的侧壁，所述磁体部包括固定于所述底板的第一磁钢、固定于所述第一磁钢的第一极芯、固定于所述第一极芯的第二磁钢、固定于所述第一极芯且分设于所述第二磁钢的长轴两侧的第三磁钢、固定于所述第二磁钢的第二极芯和固定于所述第三磁钢的第三极芯，所述第二磁钢和所述第二极芯与所述第三磁钢和所述第三极芯间隔形成所述第一磁间隙，所述磁体部与所述侧壁间隔形成所述第二磁间隙。Preferably, the magnetic circuit system includes a yoke and a magnet portion fixed to the yoke, the yoke includes a base plate and a side wall bent and extended from the long axis of the base plate, the magnet portion includes a first magnet fixed to the base plate, a first pole core fixed to the first magnet, a second magnet fixed to the first pole core, a third magnet fixed to the first pole core and arranged on both sides of the long axis of the second magnet, a second pole core fixed to the second magnet and a third pole core fixed to the third magnet, the second magnet and the second pole core are spaced from the third magnet and the third pole core to form the first magnetic gap, and the magnet portion and the side wall are spaced from the second magnetic gap.
优选的，所述第一磁钢与所述第二磁钢相对的磁极的极性相反，所述第一磁钢与所述第三磁钢相对的磁极的极性相同。Preferably, the polarities of the magnetic poles of the first magnetic steel and the second magnetic steel relative to each other are opposite, and the polarities of the magnetic poles of the first magnetic steel and the third magnetic steel relative to each other are the same.
优选的，所述盆架包括固定于所述底板的短轴边的塑料支架和与所述振膜固定连接的金属框架，所述金属框架固定于所述塑料支架和所述侧壁。Preferably, the basin frame includes a plastic bracket fixed to the short axis side of the bottom plate and a metal frame fixedly connected to the diaphragm, and the metal frame is fixed to the plastic bracket and the side wall.
优选的，所述塑料支架包括一对夹持所述底板的夹持臂，所述夹持臂抵接于所述侧壁。Preferably, the plastic bracket comprises a pair of clamping arms for clamping the bottom plate, and the clamping arms abut against the side walls.
优选的，所述具有警报功能的扬声器还包括前盖板，所述前盖板设有出声孔，所述前盖板、所述固定部和所述金属框架一体注塑成型。Preferably, the speaker with alarm function further comprises a front cover plate, the front cover plate is provided with a sound outlet hole, and the front cover plate, the fixing part and the metal frame are integrally injection molded.
优选的，所述振动系统还包括柔性电路板，所述柔性电路板的一端夹设于所述第二骨架和所述第二音圈之间，所述柔性电路板的另一端固定于所述塑料支架并从所述金属框架穿出。Preferably, the vibration system further comprises a flexible circuit board, one end of the flexible circuit board is sandwiched between the second frame and the second voice coil, and the other end of the flexible circuit board is fixed to the plastic bracket and passes through the metal frame.
本发明的具有警报功能的扬声器的频响曲线在2-4 kHz存在一个尖峰，在需要进行警报时，在2-4 kHz不作信号处理，直接发声进行警报，在作为常规的扬声器进行发声时，可以通过信号处理将该2-4 kHz的尖峰压至和常规的扬声器一致的灵敏度，从而同时具有常规的扬声器的声学性能。The frequency response curve of the loudspeaker with alarm function of the present invention has a peak at 2-4 kHz. When an alarm is needed, no signal processing is performed at 2-4 kHz, and the alarm is directly sounded. When it is used as a conventional loudspeaker to sound, the 2-4 kHz peak can be compressed to the same sensitivity as a conventional loudspeaker through signal processing, thereby having the acoustic performance of a conventional loudspeaker.
【 附图说明】 【 Brief Description of the Drawings 】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本发明领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in the field of the present invention, other drawings can be obtained based on these drawings without creative work, among which:
图1为本发明的具有警报功能的扬声器的立体图；FIG1 is a perspective view of a loudspeaker with an alarm function according to the present invention;
图2为本发明的具有警报功能的扬声器的立体分解图；FIG2 is a perspective exploded view of a loudspeaker with an alarm function according to the present invention;
图3为沿图1中A-A线的剖面视图；Fig. 3 is a cross-sectional view along line A-A in Fig. 1;
图4为沿图1中B-B线的剖面视图；Fig. 4 is a cross-sectional view along line B-B in Fig. 1;
图5为本发明的具有警报功能的扬声器的频响曲线图。FIG. 5 is a frequency response curve diagram of the loudspeaker with alarm function according to the present invention.
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本发明领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field of the present invention without creative work are within the scope of protection of the present invention.
请参阅图1-4所示，本发明提供一种具有警报功能的扬声器100，所述具有警报功能的扬声器100包括盆架1、固定于所述盆架1的振动系统2和固定于所述盆架1的驱动所述振动系统2振动发声的磁路系统3。Please refer to Figures 1-4. The present invention provides a loudspeaker 100 with an alarm function. The loudspeaker 100 with an alarm function includes a basin frame 1, a vibration system 2 fixed to the basin frame 1, and a magnetic circuit system 3 fixed to the basin frame 1 for driving the vibration system 2 to vibrate and produce sound.
所述振动系统2包括振膜21、音圈22和骨架23，所述振膜21包括位于中间位置的第一振动部211、自所述第一振动部211的外周缘向外延伸的第一折环部212、自所述第一折环部212的外周缘向外延伸的环形的第二振动部213、自所述第二振动部213的外周缘向外延伸的第二折环部214、自所述第二折环部214的外周缘向外延伸的固定于所述盆架1的固定部215、固定于所述第一振动部211下表面的第一球顶216和固定于所述第二振动部213下表面的第二球顶217，所述音圈22包括第一音圈221和环绕于所述第一音圈221外侧的第二音圈222，所述骨架23包括连接所述第一球顶216和所述第一音圈221的第一骨架231以及连接所述第二球顶217和所述第二音圈222的第二骨架232。The vibration system 2 includes a diaphragm 21, a voice coil 22 and a skeleton 23. The diaphragm 21 includes a first vibration part 211 located in the middle, a first folding ring part 212 extending outward from the outer periphery of the first vibration part 211, a ring-shaped second vibration part 213 extending outward from the outer periphery of the first folding ring part 212, a second folding ring part 214 extending outward from the outer periphery of the second vibration part 213, a fixing part 215 extending outward from the outer periphery of the second folding ring part 214 and fixed to the basin frame 1, a first dome 216 fixed to the lower surface of the first vibration part 211, and a second dome 217 fixed to the lower surface of the second vibration part 213. The voice coil 22 includes a first voice coil 221 and a second voice coil 222 surrounding the outer side of the first voice coil 221. The skeleton 23 includes a first skeleton 231 connecting the first dome 216 and the first voice coil 221, and a second skeleton 232 connecting the second dome 217 and the second voice coil 222.
所述磁路系统3设有第一磁间隙301和第二磁间隙302，所述第一音圈221插设于所述第一磁间隙301，所述第二音圈222插设于所述第二磁间隙302。The magnetic circuit system 3 is provided with a first magnetic gap 301 and a second magnetic gap 302 . The first voice coil 221 is inserted in the first magnetic gap 301 , and the second voice coil 222 is inserted in the second magnetic gap 302 .
在本实施方式中，所述磁路系统3包括磁轭31和固定于所述磁轭31的磁体部32，所述磁轭31包括底板311和自所述底板311的长轴边弯折延伸的侧壁312，所述磁体部32包括固定于所述底板311的第一磁钢321、固定于所述第一磁钢321的第一极芯322、固定于所述第一极芯322的第二磁钢323、固定于所述第一极芯322且分设于所述第二磁钢323的长轴两侧的第三磁钢324、固定于所述第二磁钢323的第二极芯325和固定于所述第三磁钢324的第三极芯326，所述第二磁钢323和所述第二极芯325与所述第三磁钢324和所述第三极芯326间隔形成所述第一磁间隙301，所述磁体部32与所述侧壁312间隔形成所述第二磁间隙302。所述第一磁钢321与所述第二磁钢323相对的磁极的极性相反，所述第一磁钢321与所述第三磁钢324相对的磁极的极性相同。In this embodiment, the magnetic circuit system 3 includes a yoke 31 and a magnetic portion 32 fixed to the yoke 31, the yoke 31 includes a bottom plate 311 and a side wall 312 bent and extended from the long axis side of the bottom plate 311, the magnetic portion 32 includes a first magnetic steel 321 fixed to the bottom plate 311, a first pole core 322 fixed to the first magnetic steel 321, a second magnetic steel 323 fixed to the first pole core 322, a third magnetic steel 324 fixed to the first pole core 322 and arranged on both sides of the long axis of the second magnetic steel 323, a second pole core 325 fixed to the second magnetic steel 323 and a third pole core 326 fixed to the third magnetic steel 324, the second magnetic steel 323 and the second pole core 325 are spaced from the third magnetic steel 324 and the third pole core 326 to form the first magnetic gap 301, and the magnetic portion 32 is spaced from the side wall 312 to form the second magnetic gap 302. The polarities of the magnetic poles of the first magnetic steel 321 and the second magnetic steel 323 are opposite to each other, and the polarities of the magnetic poles of the first magnetic steel 321 and the third magnetic steel 324 are the same as each other.
所述盆架1包括固定于所述底板311的短轴边的塑料支架11和与所述振膜21固定连接的金属框架12，所述金属框架12固定于所述塑料支架11和所述侧壁312。所述塑料支架11包括一对夹持所述底板311的夹持臂111，所述夹持臂111抵接于所述侧壁312。The basin frame 1 includes a plastic bracket 11 fixed to the short axis side of the bottom plate 311 and a metal frame 12 fixedly connected to the diaphragm 21, and the metal frame 12 is fixed to the plastic bracket 11 and the side wall 312. The plastic bracket 11 includes a pair of clamping arms 111 clamping the bottom plate 311, and the clamping arms 111 abut against the side wall 312.
所述具有警报功能的扬声器100还包括前盖板4，所述前盖板4设有出声孔41，所述前盖板4、所述固定部215和所述金属框架12一体注塑成型。The loudspeaker 100 with alarm function further includes a front cover plate 4 , the front cover plate 4 is provided with a sound outlet hole 41 , and the front cover plate 4 , the fixing portion 215 and the metal frame 12 are integrally injection molded.
所述振动系统2还包括柔性电路板24，所述柔性电路板24的一端241夹设于所述第二骨架232和所述第二音圈222之间，所述柔性电路板24的另一端242固定于所述塑料支架11并从所述金属框架12穿出，从而与外部电路电连接。The vibration system 2 also includes a flexible circuit board 24, one end 241 of the flexible circuit board 24 is sandwiched between the second frame 232 and the second voice coil 222, and the other end 242 of the flexible circuit board 24 is fixed to the plastic bracket 11 and passes through the metal frame 12, so as to be electrically connected to the external circuit.
本发明的具有警报功能的扬声器的频响曲线在2-4 kHz存在一个尖峰，如图5所示，在需要进行警报时，在2-4 kHz不作信号处理，直接发声进行警报，在作为常规的扬声器进行发声时，可以通过信号处理将该2-4 kHz的尖峰压至和常规的扬声器一致的灵敏度，从而同时具有常规的扬声器的声学性能。The frequency response curve of the loudspeaker with alarm function of the present invention has a peak at 2-4 kHz, as shown in FIG5 . When an alarm is required, no signal processing is performed at 2-4 kHz, and the alarm is directly sounded. When a conventional loudspeaker is used to sound, the 2-4 kHz peak can be compressed to the same sensitivity as a conventional loudspeaker through signal processing, thereby having the acoustic performance of a conventional loudspeaker.
以上所述的仅是本发明的实施方式，在此应当指出，对于本发明领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。The above description is only an implementation mode of the present invention. It should be pointed out that ordinary technicians in the field of the present invention can make improvements without departing from the creative concept of the present invention, but these all fall within the protection scope of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2023/087013 WO2024207471A1 (en) | 2023-04-07 | 2023-04-07 | Loudspeaker with alarm function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2023/087013 WO2024207471A1 (en) | 2023-04-07 | 2023-04-07 | Loudspeaker with alarm function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024207471A1 true WO2024207471A1 (en) | 2024-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2023/087013 Ceased WO2024207471A1 (en) | 2023-04-07 | 2023-04-07 | Loudspeaker with alarm function |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2024207471A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201629838U (en) * | 2009-12-21 | 2010-11-10 | 深圳市美欧电子有限责任公司 | Double folding ring electromagnetic loudspeaker |
| CN215499559U (en) * | 2021-09-18 | 2022-01-11 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN216852330U (en) * | 2022-01-05 | 2022-06-28 | 东莞顺合丰电业有限公司 | Loudspeaker with double voice coils |
| CN217721457U (en) * | 2022-06-30 | 2022-11-01 | 瑞声光电科技(常州)有限公司 | Coaxial loudspeaker |
-
2023
- 2023-04-07 WO PCT/CN2023/087013 patent/WO2024207471A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201629838U (en) * | 2009-12-21 | 2010-11-10 | 深圳市美欧电子有限责任公司 | Double folding ring electromagnetic loudspeaker |
| CN215499559U (en) * | 2021-09-18 | 2022-01-11 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN216852330U (en) * | 2022-01-05 | 2022-06-28 | 东莞顺合丰电业有限公司 | Loudspeaker with double voice coils |
| CN217721457U (en) * | 2022-06-30 | 2022-11-01 | 瑞声光电科技(常州)有限公司 | Coaxial loudspeaker |
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