CN-122002196-A - Sound producing device and electronic equipment

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, a vibration system and a conductive support, the magnetic circuit system comprises a magnetic 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 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, the side magnetic conduction plates comprise two long side magnetic conduction parts and two short side magnetic conduction parts, each short side magnetic conduction part comprises a magnetic conduction part body and an extension part, the extension part extends towards the magnetic yoke, the vibration system comprises a centering support piece, a vibrating diaphragm and a voice coil, the magnetic circuit system is provided with a mounting hole, and the conductive support is embedded in the mounting hole. Through setting up the extension, increased the magnetic circuit of voice coil loudspeaker voice coil along center magnetic circuit major axis direction both sides, through setting up conductive support, make voice coil loudspeaker voice coil and magnetic circuit can make bigger to sound generating mechanism's acoustic performance has been promoted.

Inventors

• LI JIE
• LIU HUAWEI
• JIANG YUE

Assignees

• 歌尔股份有限公司

Dates

Publication Date

20260508

Application Date

20260105

Claims (11)

1. 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 encircle 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 of the two side magnets, which are far away from the magnetic conduction yoke, the short side magnetic conduction parts comprise magnetic conduction part bodies and extension parts, the extension parts are arranged on one sides of the magnetic conduction part bodies, which face the magnetic conduction yoke, and the extension parts extend towards the magnetic conduction yoke; The vibration system comprises a centering support piece, a vibrating diaphragm and a voice coil which is connected with the vibrating diaphragm and drives the vibrating diaphragm to vibrate along a first direction, and the voice coil is arranged corresponding to the magnetic gap; The magnetic circuit system is provided with a mounting hole penetrating through the central magnetic circuit and the magnetic yoke, the conductive support is embedded in the mounting hole, one end of the centering support piece is electrically connected with the conductive support, and the other end of the centering support piece is connected with the vibrating diaphragm and is electrically connected with a lead wire of the voice coil.
2. 2. The sound generating apparatus according to claim 1, wherein the conductive support comprises an insulating body and a conductive insert disposed on the insulating body, the insulating body is connected with the magnetic conductive yoke, the conductive insert comprises a first conductive portion and a second conductive portion exposed on two sides of the insulating body along the first direction, the first conductive portion is electrically connected with the second conductive portion, the first conductive portion is disposed towards the centering support and is electrically connected with the centering support, and the second conductive portion is electrically connected with an external power supply.
3. 3. The sound generating apparatus according to claim 2, wherein the conductive insert further includes a third conductive portion buried in the insulating body, one end of the third conductive portion being connected to the first conductive portion, the other end of the third conductive portion being connected to the second conductive portion; And/or the insulating body and the magnetic yoke are integrated into an injection molding product.
4. 4. The sound generating apparatus of claim 1, wherein the mounting hole has an avoidance space therein for avoiding the centering disc; And/or, one end of the magnetic conduction yoke, which is away from the vibrating diaphragm, is provided with a wiring groove, one end of the wiring groove is communicated with the mounting hole, and the other end of the wiring groove extends to the outer edge of the magnetic conduction yoke and penetrates through the outer edge of the magnetic conduction yoke.
5. 5. The sound generating device as recited in claim 2, wherein the centering pad includes a first fixing portion, a cantilever portion, a bending portion and a second fixing portion connected in sequence, the first fixing portion is electrically connected with the first conductive portion, the bending portion extends along the first direction, one side of the second fixing portion is connected with the diaphragm, and the other side of the second fixing portion is also electrically connected with a lead wire of the voice coil.
6. 6. The sound generating apparatus of claim 1, wherein the voice coil comprises a square voice coil, the extension portion comprises a connection section and bending sections disposed at both ends of the connection section, the connection section corresponds to a short axis side of the square voice coil, and the bending sections correspond to two corners at both ends of the short axis side.
7. 7. The sound generating apparatus according to any of claims 1 to 6, further comprising a housing, one end of the housing being connected to the magnetically permeable yoke, the other end of the housing being connected to an outer edge of the diaphragm, the side magnetically permeable plate being an integrally injection molded part with the housing.
8. 8. The sound generating apparatus according to claim 7, wherein the diaphragm includes a folder ring, a first diaphragm and a second diaphragm, an outer edge of the folder ring is connected with the housing, the folder ring is disposed at intervals with the magnetic circuit, a first through hole is defined in a center of the folder ring, the first diaphragm is disposed corresponding to the first through hole and is connected with the folder ring, the centering support is connected with the first diaphragm, a second through hole is disposed in a center of the first diaphragm, the second diaphragm covers the second through hole and is connected with the first diaphragm, and the voice coil is connected with the folder ring or the first diaphragm.
9. 9. The sound generating apparatus as recited in claim 8, wherein a portion of the first vibration plate adjacent to the second through hole is provided with a boss extending toward the centering pad, and the boss is connected to a side of the centering pad remote from the conductive support.
10. 10. 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 disposed in a stacked arrangement, the central magnet being connected to the magnetically permeable yoke on a side thereof remote from the central magnetically permeable plate; A first avoiding groove for avoiding the wire of the voice coil is formed in one side, away from the central magnet, of the central magnetic conduction plate; And/or, one side of the central magnetic conduction plate, which is far away from the central magnet, is provided with a second avoiding groove for avoiding the vibrating diaphragm.
11. 11. An electronic device comprising the sound emitting apparatus according to any one of claims 1 to 10.

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 encircle 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 of the two side magnets, which are far away from the magnetic conduction yoke, the short side magnetic conduction parts comprise magnetic conduction part bodies and extension parts, the extension parts are arranged on one sides of the magnetic conduction part bodies, which face the magnetic conduction yoke, and the extension parts extend towards the magnetic conduction yoke; The vibration system comprises a centering support piece, a vibrating diaphragm and a voice coil which is connected with the vibrating diaphragm and drives the vibrating diaphragm to vibrate along a first direction, and the voice coil is arranged corresponding to the magnetic gap; The magnetic circuit system is provided with a mounting hole penetrating through the central magnetic circuit and the magnetic yoke, the conductive support is embedded in the mounting hole, one end of the centering support piece is electrically connected with the conductive support, and the other end of the centering support piece is connected with the vibrating diaphragm and is electrically connected with a lead wire of the voice coil. In an embodiment, the conductive support comprises an insulating body and a conductive insert arranged on the insulating body, the insulating body is connected with the magnetic conductive yoke, the conductive insert comprises a first conductive part and a second conductive part which are exposed on the insulating body along two sides of the first direction, the first conductive part is electrically connected with the second conductive part, the first conductive part faces the centering support piece and is electrically connected with the centering support piece, and the second conductive part is electrically connected with an external power supply. In an embodiment, the conductive insert further includes a third conductive portion buried in the insulating body, one end of the third conductive portion is connected to the first conductive portion, and the other end of the third conductive portion is connected to the second conductive portion; And/or the insulating body and the magnetic yoke are integrated into an injection molding product. In one embodiment, an avoidance space for avoiding the centering support piece is formed in the mounting hole; And/or, one end of the magnetic conduction yoke, which is away from the vibrating diaphragm, is provided with a wiring groove, one end of the wiring groove is communicated with the mounting hole, and the other end of the wiring groove extends to the outer