CN-122002195-A - Sound generating device and electronic equipment

CN122002195ACN 122002195 ACN122002195 ACN 122002195ACN-122002195-A

Abstract

The invention discloses a sound generating device and electronic equipment, and relates to the technical field of electronic equipment, wherein in the sound generating device, a magnetic circuit assembly is provided with a plurality of magnetic gaps which are arranged at intervals; the voice coil motor comprises a plurality of voice coils, a vibrating diaphragm, a framework, a plurality of first connecting parts and a plurality of second connecting parts, wherein the voice coils are respectively arranged in a plurality of magnetic gaps, the vibrating diaphragm is arranged on one side of the magnetic circuit assembly in a first direction and comprises a vibrating plate and a folding ring arranged on the periphery of the vibrating plate, part of the vibrating plate protrudes towards the voice coil to form a convex part, the framework is provided with a first end and a second end which are oppositely arranged along the first direction, the first end is connected with the convex part, and the second end is provided with the plurality of first connecting parts which are respectively connected with the plurality of voice coils. The voice coils work in the same phase at the same time and drive the same vibrating diaphragm together. After the design of the convex part on the vibrating plate is matched with the framework, the voice coil can sink towards the direction away from the vibrating diaphragm, and compared with the traditional structure, the voice coil can sink to a deeper position in the magnetic gap, so that the utilization rate of the magnetic gap is improved, and the effective length of the cutting magnetic induction line is increased.

Inventors

YANG ZIKUN
ZHOU SHUZHI
WANG JIANJIAN
GUO XIANG
LIU RUOTONG

Assignees

歌尔股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260105

Claims (10)

1. A sound emitting device, the sound emitting device comprising: A magnetic circuit assembly having a plurality of magnetic gaps arranged at intervals; a plurality of voice coils respectively arranged in the plurality of magnetic gaps; a diaphragm located at one side of the magnetic circuit assembly in a first direction, the diaphragm including a diaphragm and a folder ring provided at the periphery of the diaphragm, part of the diaphragm protruding toward the voice coil to form a convex portion, and The framework is provided with a first end and a second end which are oppositely arranged along a first direction, the first end is connected with the convex part, a plurality of first connecting parts are arranged on the second end, and the first connecting parts are respectively connected with the voice coils.
2. The sound emitting apparatus of claim 1, wherein a plurality of the voice coils are arranged in a second direction; the framework comprises a plurality of first frame bodies which are arranged along a second direction, the plurality of first frame bodies are in one-to-one correspondence with the plurality of voice coils, and the two opposite ends of the plurality of first frame bodies along the first direction correspondingly form the first end and the second end; and a plurality of first connecting parts are respectively arranged on each first frame body.
3. The sound generating apparatus according to claim 2, wherein the first frame body includes a frame body, the frame body is provided with the first connection portion toward one side of the voice coil, a side end of the frame body is further provided with a second connection portion, and the second connection portion is arranged to avoid the magnetic circuit assembly; The sound generating device further comprises a centering support piece, wherein the centering support piece comprises an outer support part, a cantilever part and an inner support part which are sequentially connected, and the inner support part is connected with the second connecting part.
4. The sound generating apparatus according to claim 3, wherein the middle part of the bracket body is hollowed out to form a hollowed-out area; The convex part is in annular arrangement and corresponds to the periphery of the hollowed-out area.
5. The sound generating apparatus according to claim 3, wherein the first connecting portion includes a plurality of connecting segments arranged at intervals along a circumferential direction of the holder main body, the plurality of connecting segments being connected together to the corresponding voice coil, each of the connecting segments corresponding to a major axis side and/or a minor axis side of the corresponding voice coil.
6. The sound generating apparatus as claimed in claim 3, wherein the second connection part comprises a first support section and a second support section arranged in an included angle, the first support section is connected with a side end of the bracket main body, and the second support section extends along a first direction and is connected with the first support section and the centering support piece.
7. The sound generating apparatus according to claim 1, wherein the magnetic circuit assembly comprises a magnetic yoke, a first central magnetic part and a side magnetic part, wherein the first central magnetic part and the side magnetic part are arranged on the magnetic yoke, the first central magnetic part comprises a plurality of central magnets which are arranged at intervals along a second direction, the plurality of central magnets comprises a first central magnet and two second central magnets, the first central magnet comprises a main body section and two extension sections which are positioned at two opposite ends of the main body section, the extension sections extend along the second direction, the main body section extends along a third direction, the third direction is perpendicular to the second direction, the two second central magnets are respectively arranged at two opposite sides of the main body section along the second direction, the side magnetic part comprises two side magnets, the two side magnets are respectively arranged at one side of the second central magnet which is away from the main body section, and the two side magnets are respectively spaced from the plurality of central magnets so as to jointly enclose two magnetic gaps which are arranged at intervals along the second direction; The number of the voice coils is two, the long axis of each voice coil corresponds to the main body section, and the short axis of each voice coil corresponds to the extension section; the vibrating diaphragm is positioned on one side of the first central magnetic part, which is far away from the magnetic conducting yoke.
8. The sound generating apparatus of claim 7, wherein the magnetic circuit assembly further comprises a second central magnetic portion disposed opposite to the first central magnetic portion in a first direction, the second central magnetic portion comprising a third central magnet and two fourth central magnets disposed at intervals along a second direction, the third central magnet being connected to the first central magnet by a first washer, the fourth central magnet being connected to the second central magnet by a second washer.
9. The sound emitting apparatus of claim 8, wherein the third center magnet is a bar magnet corresponding to only the main body section, and/or, The third and fourth center magnets have a height in the first direction that is less than a height in the first direction of the first and second center magnets, and/or, The height of the side magnets along the first direction is greater than the heights of the first center magnet and the second center magnet along the first direction.
10. An electronic device comprising a sound emitting apparatus according to any one of claims 1 to 9.

Description

Sound generating device and electronic equipment Technical Field The invention relates to the technical field of electronic equipment, in particular to a sound generating device and electronic equipment. Background With the rapid updating of mobile terminal devices such as smart phones, the requirements of consumers on audio-visual entertainment experience are continuously improved, and further stricter standards are provided for the audio performance of the whole mobile terminal device. Especially in the aspect of the performance of a speaker (loudspeaker) of a mobile phone, the physical space available for the layout of the speaker is increasingly limited due to the pursuit of a very comprehensive screen and a light and thin body in the market. The increase of the vibration area and the maximum amplitude of the loudspeaker face obvious design bottlenecks, and how to realize better acoustic performance in a limited space has become an important problem in industry. Disclosure of Invention The invention mainly aims to provide a sound generating device and electronic equipment, which can improve the utilization rate of a magnetic gap, thereby improving the overall performance. In order to achieve the above object, the present invention provides a sound generating apparatus, comprising: A magnetic circuit assembly having a plurality of magnetic gaps arranged at intervals; a plurality of voice coils respectively arranged in the plurality of magnetic gaps; a diaphragm located at one side of the magnetic circuit assembly in a first direction, the diaphragm including a diaphragm and a folder ring provided at the periphery of the diaphragm, part of the diaphragm protruding toward the voice coil to form a convex portion, and The framework is provided with a first end and a second end which are oppositely arranged along a first direction, the first end is connected with the vibrating diaphragm, a plurality of first connecting parts are arranged on the second end, and the first connecting parts are respectively connected with the voice coils. In one embodiment, the plurality of voice coils are arranged along the second direction; the framework comprises a plurality of first frame bodies which are arranged along a second direction, the plurality of first frame bodies are in one-to-one correspondence with the plurality of voice coils, and the two opposite ends of the plurality of first frame bodies along the first direction correspondingly form the first end and the second end; and a plurality of first connecting parts are respectively arranged on each first frame body. In an embodiment, the first frame body includes a frame body, the frame body is provided with the first connection part towards one side of the voice coil, the side end of the frame body is also provided with a second connection part, and the second connection part is arranged to avoid the magnetic circuit assembly; The sound generating device further comprises a centering support piece, wherein the centering support piece comprises an outer support part, a cantilever part and an inner support part which are sequentially connected, and the inner support part is connected with the second connecting part. In an embodiment, the middle part of the bracket main body is hollowed out to form a hollowed-out area; The convex part is in annular arrangement and corresponds to the periphery of the hollowed-out area. In an embodiment, the first connection portion includes a plurality of connection segments arranged at intervals along a circumferential direction of the support body, the plurality of connection segments are connected together to the corresponding voice coil, and the plurality of connection segments respectively correspond to a long axis side and/or a short axis side of the corresponding voice coil. In an embodiment, the second connection portion includes a first support section and a second support section that are disposed at an included angle, the first support section is connected to a side end of the support body, and the second support section extends along a first direction and is connected to the first support section and the centering support piece. In an embodiment, the magnetic circuit assembly includes a magnetic yoke, a first central magnetic portion and a side magnetic portion, wherein the first central magnetic portion includes a plurality of central magnets arranged at intervals along a second direction, the plurality of central magnets includes a first central magnet and two second central magnets, the first central magnet includes a main body section and two extension sections located at opposite ends of the main body section, the extension sections extend along the second direction, the main body section extends along a third direction, the third direction is perpendicular to the second direction, the two second central magnets are respectively arranged at opposite sides of the main body section along the second direction, the side m