CN-122002197-A - Sound producing device and electronic equipment

CN122002197ACN 122002197 ACN122002197 ACN 122002197ACN-122002197-A

Abstract

The invention discloses a sound generating device and electronic equipment, and relates to the technical field of electroacoustic energy conversion, wherein the sound generating device comprises a magnetic circuit system and a vibration system, the magnetic circuit system comprises a magnetic conduction yoke, a central magnetic circuit and a side magnetic circuit, the central magnetic circuit and the side magnetic circuit are arranged on the periphery of the magnetic conduction yoke, the side magnetic circuit is arranged at intervals with the central magnetic circuit to form a magnetic gap, the side magnetic circuit comprises two side magnets and side magnetic conduction plates surrounding the central magnetic circuit, the side magnetic conduction plates comprise two long side magnetic conduction parts and two short side magnetic conduction parts, the two long side magnetic conduction parts are respectively connected with one ends of the two side magnets, which are far away from the magnetic conduction yoke, each short side magnetic conduction part comprises a magnetic conduction part body and an extension part which is arranged on one side of the magnetic conduction part body, the extension part extends towards the magnetic conduction yoke, the vibration system comprises a vibrating diaphragm and a voice coil which is connected with the vibrating diaphragm and drives the vibrating diaphragm to vibrate, and the voice coil is arranged corresponding to the magnetic gap. Through setting up extension, increased the magnetic circuit of voice coil loudspeaker voice coil along center magnetic circuit major axis direction both sides, promoted sound generating mechanism's acoustic performance.

Inventors

LI JIE
LIU HUAWEI
JIANG YUE

Assignees

歌尔股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260105

Claims (10)

1. A sound emitting device, comprising: the magnetic circuit system comprises a magnetic yoke, a central magnetic circuit and a side magnetic circuit, wherein the central magnetic circuit and the side magnetic circuit are arranged on the periphery of the central magnetic circuit, and a magnetic gap is formed between the side magnetic circuit and the central magnetic circuit; The side magnetic circuit comprises two side magnets and side magnetic conduction plates, wherein the two side magnets are respectively arranged on two sides of the central magnetic circuit along the short axis direction of the central magnetic circuit, the side magnetic conduction plates surround the central magnetic circuit, the side magnetic conduction plates comprise two long side magnetic conduction parts and two short side magnetic conduction parts, the long side magnetic conduction parts are arranged along the short axis direction of the central magnetic circuit, the short side magnetic conduction parts are arranged along the long axis direction of the central magnetic circuit, the two long side magnetic conduction parts are respectively connected with one ends, far away from the magnetic conduction yoke, of the two side magnetic conduction parts, each short side magnetic conduction part comprises a magnetic conduction part body and an extension part, the extension part is arranged on one side, facing the magnetic conduction yoke, of the magnetic conduction part body, and the extension part extends towards the magnetic conduction yoke; The vibration system comprises a vibrating diaphragm and a voice coil connected with the vibrating diaphragm and driving the vibrating diaphragm to vibrate, and the voice coil is arranged corresponding to the magnetic gap.
2. The sound generating apparatus according to claim 1, further comprising a housing and a centering support, wherein one end of the housing is connected to the magnetic yoke, the other end of the housing is connected to an outer edge of the diaphragm, one end of the centering support is connected to the housing, the other end of the centering support is connected to the voice coil, and the short-side magnetic conductive portion is formed with a first avoiding portion for avoiding the centering support.
3. The sound generating apparatus according to claim 2, wherein the first escape portion includes a first escape groove formed by a recess of an end of the extension portion near the yoke in a direction away from the yoke; Or the first avoiding part comprises a first avoiding hole, each short-side magnetic conduction part comprises two parts which are spaced apart, and the first avoiding hole is formed between the two parts which are spaced apart.
4. The sound emitting device of claim 2, wherein the side magnetically permeable plate is an integrally injection molded piece with the housing; And/or, the shell, the vibrating diaphragm and the magnetic conduction yoke enclose into the accommodating cavity for accommodating the magnetic circuit system and the voice coil, the communication hole for accommodating the cavity is formed in the shell, the sound generating device further comprises a mesh cloth, the mesh cloth covers the communication hole, and the mesh cloth and the shell are integrally injection molded parts.
5. The sound generating apparatus of claim 2, wherein the centering clip comprises a first connection portion, a second connection portion, and a cantilever portion connecting the first connection portion and the second connection portion, the first connection portion being connected to the housing, the second connection portion being connected to an end of the voice coil remote from the diaphragm or to a side wall of the voice coil.
6. The sound generating apparatus according to claim 5, wherein the number of the first connecting portions and the cantilever portions is two, the two first connecting portions are arranged at intervals, and each of the first connecting portions is connected with the second connecting portion through one of the cantilever portions; And/or the first connecting part is clamped between the magnetic yoke and the shell; and/or, the centering support pieces comprise two centering support pieces, the two centering support pieces are correspondingly distributed along the long axis direction of the magnetic circuit system, and the first avoiding parts and the centering support pieces are consistent in number and are correspondingly arranged one by one.
7. The sound generating apparatus according to any one of claims 1 to 6, wherein an edge of the magnetically permeable portion body facing the voice coil is bent and extended in a direction of the magnetic yoke to form the extension portion; And/or the short-side magnetic conduction part and the long-side magnetic conduction part are integrated into a whole.
8. The sound generating apparatus according to any one of claims 1 to 6, wherein the extension portion is formed with an arc-shaped magnetically conductive portion that is fitted to a corner portion of the voice coil.
9. The sound generating apparatus according to any one of claims 1 to 6, wherein the central magnetic circuit includes a central magnetically permeable plate and a central magnet that are stacked, the central magnet being connected to the magnetically permeable yoke on a side thereof remote from the central magnetically permeable plate; and/or the vibrating diaphragm comprises a folding ring and a ball top, wherein a through hole is formed in the center of the folding ring in a surrounding mode, and the ball top covers the through hole and is connected with the folding ring.
10. An electronic device comprising the sound emitting apparatus according to any one of claims 1 to 9.

Description

Sound producing device and electronic equipment Technical Field The invention relates to the technical field of electroacoustic energy conversion, in particular to a sound generating device and electronic equipment. Background With the rapid development of consumer electronics in recent years, mobile phones, computers, headphones, VR devices and the like are accepted by more and more people, and with the continuous use of users, the requirements of users on sound quality are gradually increased, which forces those skilled in the art to gradually improve the sound quality so as to meet the increasing requirements of users on sound quality. Sound emitting devices are important electroacoustic transducer components in consumer electronics, which find wide application as speakers, headphones, earphones, and the like. For some speakers it is possible to achieve the module filling requirement but with low performance, while for some speakers it is difficult to achieve the full filling requirement, although with better acoustic performance. Disclosure of Invention The invention mainly aims to provide a sound generating device and electronic equipment, and aims to solve the problem of improving the acoustic performance of a loudspeaker. In order to achieve the above object, the present invention provides a sound generating apparatus, comprising: the magnetic circuit system comprises a magnetic yoke, a central magnetic circuit and a side magnetic circuit, wherein the central magnetic circuit and the side magnetic circuit are arranged on the periphery of the central magnetic circuit, and a magnetic gap is formed between the side magnetic circuit and the central magnetic circuit; The side magnetic circuit comprises two side magnets and side magnetic conduction plates, wherein the two side magnets are respectively arranged on two sides of the central magnetic circuit along the short axis direction of the central magnetic circuit, the side magnetic conduction plates surround the central magnetic circuit, the side magnetic conduction plates comprise two long side magnetic conduction parts and two short side magnetic conduction parts, the long side magnetic conduction parts are arranged along the short axis direction of the central magnetic circuit, the short side magnetic conduction parts are arranged along the long axis direction of the central magnetic circuit, the two long side magnetic conduction parts are respectively connected with one ends, far away from the magnetic conduction yoke, of the two side magnetic conduction parts, each short side magnetic conduction part comprises a magnetic conduction part body and an extension part, the extension part is arranged on one side, facing the magnetic conduction yoke, of the magnetic conduction part body, and the extension part extends towards the magnetic conduction yoke; The vibration system comprises a vibrating diaphragm and a voice coil connected with the vibrating diaphragm and driving the vibrating diaphragm to vibrate, and the voice coil is arranged corresponding to the magnetic gap. In an embodiment, the sound generating device further comprises a housing and a centering support piece, one end of the housing is connected with the magnetic conductive yoke, the other end of the housing is connected with the outer edge of the vibrating diaphragm, one end of the centering support piece is connected with the housing, the other end of the centering support piece is connected with the voice coil, and the short-side magnetic conductive portion is provided with a first avoiding portion for avoiding the centering support piece. In one embodiment, the first avoidance portion includes a first avoidance groove formed by recessing one end of the extension portion, which is close to the magnetic yoke, in a direction away from the magnetic yoke; Or the first avoiding part comprises a first avoiding hole, each short-side magnetic conduction part comprises two parts which are spaced apart, and the first avoiding hole is formed between the two parts which are spaced apart. In one embodiment, the side magnetic conduction plate and the shell are integrally injection molded; And/or, the shell, the vibrating diaphragm and the magnetic conduction yoke enclose into the accommodating cavity for accommodating the magnetic circuit system and the voice coil, the communication hole for accommodating the cavity is formed in the shell, the sound generating device further comprises a mesh cloth, the mesh cloth covers the communication hole, and the mesh cloth and the shell are integrally injection molded parts. In an embodiment, the centering support piece includes a first connection portion, a second connection portion, and a cantilever portion connected to the first connection portion and the second connection portion, the first connection portion is connected to the housing, and the second connection portion is connected to one end of the voice coil away from the diaphragm or to a side wall of