CN117641208A

CN117641208A - Sound producing device and electronic equipment

Info

Publication number: CN117641208A
Application number: CN202311091285.XA
Authority: CN
Inventors: 蔡晓东; 刘松; 李波波
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-08-26
Filing date: 2023-08-28
Publication date: 2024-03-01
Also published as: CN115396761A; CN220292186U; CN117641209A; CN117641210A; CN117641206A; CN117641211A; CN117641207A

Abstract

The invention discloses a sound generating device and electronic equipment, wherein the sound generating device comprises a magnetic circuit system and a vibration system, the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap, the vibration system comprises a first vibration component and a second vibration component, the first vibration component and the second vibration component are opposite to the magnetic circuit system, the first vibration component comprises a first vibrating diaphragm and a first voice coil, one end of the first voice coil is suspended in the first magnetic gap, the second vibration component comprises a second vibrating diaphragm and a second voice coil, the second voice coil is a flat voice coil, the second voice coil is arranged in the second magnetic gap, and the vibration direction of the first vibration component and the vibration direction of the second vibration component form an included angle. The invention aims to provide the sound generating device with the mutually independent vibration radiation surfaces and arranged at the included angle, which not only realizes multifunctional application, but also effectively improves the sound generating effect and reduces the manufacturing cost.

Description

Sound producing device and electronic equipment

Technical Field

The present invention relates to electroacoustic conversion technology, and in particular, to a sound generating device and an electronic device using the sound generating device.

Background

With the development of portable consumer electronics market, the micro-sound generator is widely applied, and with the multifunctional and miniaturized design of portable terminal electronics, the requirements on the vibroacoustic performance of the micro-sound generator are raised. The effective frequency band of the miniature loudspeaker module in the intelligent mobile terminal is narrower at present, tone quality is monotonous, tone quality is poor, and various functional requirements cannot be met.

Disclosure of Invention

The invention mainly aims to provide a sound generating device and electronic equipment, and aims to provide the sound generating device with mutually independent vibration radiation surfaces and arranged at an included angle.

In order to achieve the above object, the present invention provides a sound generating apparatus, which includes a vibration system and a magnetic circuit system, wherein:

the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap; and

The vibration system comprises a first vibration component and a second vibration component which are opposite to the magnetic circuit system, the vibration direction of the first vibration component and the vibration direction of the second vibration component are arranged at an included angle, the first vibration component comprises a first vibrating diaphragm and a first voice coil, the second vibration component comprises a second vibrating diaphragm and a second voice coil, and the second voice coil is a flat voice coil;

the magnetic circuit system includes: a basin frame, a first magnetic circuit part and a second magnetic circuit part arranged on the basin frame;

the first magnetic circuit part is opposite to and spaced from the first vibration assembly, a first magnetic gap is formed in the first magnetic circuit part, and one end of the first voice coil is suspended in the first magnetic gap;

The second magnetic circuit part is opposite to and spaced from the second vibration assembly, the second magnetic circuit part is positioned at one side of a part of the first magnetic circuit part, which is opposite to the first vibration assembly, and is matched with the first magnetic circuit part to form a second magnetic gap, and the second voice coil is arranged in the second magnetic gap.

In an embodiment, the sound generating device comprises a housing, the housing comprises a first housing and a second housing which are arranged at an included angle, a mounting cavity is formed by surrounding the first housing and the second housing, and the magnetic circuit system is arranged in the mounting cavity; the first vibration assembly is connected with the first shell, the second vibration assembly is connected with the second shell, wherein,

the vibration direction of the first vibration component is perpendicular to the vibration direction of the second vibration component;

and/or the first shell and the second shell are vertically arranged;

the first vibrating diaphragm is connected to the first shell, and the second vibrating diaphragm is connected to the second shell.

In an embodiment, the first magnetic circuit portion includes a central magnetic circuit portion and a side magnetic circuit portion, the side magnetic circuit portion being disposed outside the central magnetic circuit portion and spaced apart from the central magnetic circuit portion to form the first magnetic gap;

The second magnetic circuit part is positioned on one side of the side magnetic circuit part, which is opposite to the first vibration component, and is matched with the first magnetic circuit part to form the second magnetic gap.

In an embodiment, the central magnetic circuit portion includes a central magnetic circuit, the side magnetic circuit portion includes a side magnetic circuit and a second common magnetic circuit, the side magnetic circuit is located outside the central magnetic circuit and forms a first sub-gap at intervals, the second common magnetic circuit is located outside the central magnetic circuit and forms a second sub-gap at intervals, and the first sub-gap communicates with the second sub-gap to form the first magnetic gap;

the second magnetic circuit portion includes a third magnet that opposes the second common magnetic circuit and forms the second magnetic gap therebetween.

In an embodiment, the second common magnetic circuit includes a second common magnet, the third magnet being spaced from the second common magnet with the second magnetic gap formed therebetween;

or the second common magnetic circuit comprises a second common magnet, the second common magnet comprises a main body part and an extension part bent and extended from one end of the main body part, which is close to the second sub-gap, the extension part is abutted to the third magnet or the basin stand, and the second magnetic gap is formed between the main body part and the third magnet;

Alternatively, the second common magnetic circuit includes a second common magnet, the third magnet includes a second main body portion and a second extension portion bent and extended from one end of the second main body portion near the second sub-gap, the second extension portion abuts against the second common magnet, and the second magnetic gap is formed between the second main body portion and the second common magnet;

alternatively, the second common magnetic circuit includes a second common magnetic conductive plate, the third magnet is opposite to and spaced apart from the second common magnetic conductive plate, and the second magnetic gap is formed between the third magnet and the second common magnetic conductive plate.

In an embodiment, the basin stand comprises a first section, a second section and a third section which are sequentially connected, wherein the first section and the third section are respectively arranged at an included angle with the second section and are positioned on two opposite sides of the second section; part of the first magnetic circuit part is arranged on the first section, and the second magnetic circuit part is arranged on the third section.

In an embodiment, the basin frame is provided with a venting hole, the venting hole is communicated with the first magnetic gap and/or the second magnetic gap, and the sound generating device further comprises an isolation net arranged corresponding to the venting hole;

And/or the first section and the third section are parallel to the first housing.

In an embodiment, the first diaphragm is provided with a conductive layer, the lead wire of the first voice coil is electrically connected with the conductive layer, a first conductive insert is arranged in the housing and is used for being electrically connected with an external circuit, and one end of the conductive layer, which is far away from the first voice coil, is electrically connected with the first conductive insert;

and/or, the first vibration component further comprises a first centering support piece, one end of the first centering support piece is connected with the shell, and the other end of the first centering support piece is connected with one end, far away from the first vibrating diaphragm, of the first voice coil;

and/or, the first vibration assembly further comprises a first dome, and the first dome is connected to one side of the first vibrating diaphragm, which is away from the first voice coil;

and/or, the first voice coil is an annular voice coil.

In an embodiment, the second voice coil includes two long axis sides and two short axis sides connected end to end, each short axis side is disposed between two long axis sides, one long axis side is connected to the second diaphragm, and the other long axis side is disposed in the second magnetic gap.

In an embodiment, the second diaphragm protrudes towards a side away from the magnetic circuit or towards a side close to the magnetic circuit.

In one embodiment, the first vibration assembly is for bass sounds and the second vibration assembly is for treble sounds.

The invention also provides electronic equipment, which comprises an equipment shell and the sounding device, wherein the sounding device is arranged on the equipment shell.

According to the sound production device, the first vibration component and the second vibration component are arranged on the vibration system, so that the first vibration component is opposite to the magnetic circuit system, the second vibration component is opposite to the magnetic circuit system, the magnetic circuit system is utilized to simultaneously provide a magnetic field and driving force for the first vibration component and the second vibration component, the magnetic field utilization rate is improved, the cost and the size are reduced, the vibration direction of the first vibration component and the vibration direction of the second vibration component are further arranged to be in an included angle, and the vibration system can form two mutually independent vibration radiation surfaces which are arranged in an included angle, so that the multifunctional application is realized, and the sound production effect is effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a sound generating apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating a sound generating apparatus according to another embodiment of the present invention;

FIG. 3 is an exploded view of a sound generating apparatus according to an embodiment of the present invention;

FIG. 4 is a further exploded view of a sound emitting device according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a sound generating apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a sound generating apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of a sound generating apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of a sound generating apparatus according to an embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view of a sound generating apparatus according to an embodiment of the present invention;

FIG. 10 is an exploded view of the housing according to an embodiment of the present invention;

FIG. 11 is a schematic plan view of a housing according to an embodiment of the invention;

FIG. 12 is a schematic plan view of a second voice coil according to an embodiment of the present invention;

FIG. 13 is a schematic diagram showing separation of a sound generating device and a sound guiding tube according to an embodiment of the present invention;

FIG. 14 is a cross-sectional view of a sound generating device and electronic device in accordance with an embodiment of the present invention;

FIG. 15 is a cross-sectional view of a sound generating device and electronic device in accordance with an embodiment of the present invention;

Fig. 16 is a schematic cross-sectional view of a sound generating apparatus according to an embodiment of the invention.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name	Reference numerals	Name of the name
						100	Sounding device	214	Air leakage hole	233	First magnet
1	Outer casing	22	A first magnetic circuit part	234	Second magnet
						12	First shell body	221	First magnetic gap	3	Vibration system
121	A first opening	2211	First sub-gap	31	First vibration assembly
						122	First conductive insert	2212	Second sub-gap	311	First vibrating diaphragm
123	First mounting surface	222	Central magnetic circuit part	312	First voice coil
						13	Second shell	2221	Central magnetic circuit	313	First centering support
131	A second opening	22211	Center magnet	314	First dome
						132	Second conductive insert	22212	Central washer	32	Second vibration assembly
133	Shared edge	223	Side magnetic circuit part	321	Second vibrating diaphragm
						1331	First extension part	2231	Side magnetic circuit	322	Second dome
1332	Second extension part	22311	Side magnet	3221	Connection region
						134	First edge	22312	First side washer	323	Second voice coil
135	Second mounting surface	2232	Second common magnetic circuit	41	Breathable spacer
						14	Common outer bonding pad	2222	First common magnetic circuit	5	Electric connector
1221	First inner bonding pad	22321	Second common washer	61	Sound guide pipeline
						1321	Second inner bonding pad	22321	Second common magnet	62	Sealing foam
2	Magnetic circuit system	22323	Main body part	7	Equipment shell
						21	Basin stand	22324	Extension part	71	First fitting surface
211	First section	23	A second magnetic circuit part	72	Second fitting surface
						212	Second section	231	Second magnetic gap
213	Third section	232	Third magnet

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

Based on the above concepts and problems, the present invention proposes a sound generating apparatus 100. It is understood that the sound generating apparatus 100 is applied to an electronic device, which may be a mobile phone, a sound device, a computer, a headset, a watch, or a television, and the like, and is not limited herein.

Referring to fig. 1 to 16 in combination, in the embodiment of the invention, the sound generating device 100 includes a magnetic circuit system 2 and a vibration system 3, the vibration system 3 includes a first vibration component 31 and a second vibration component 32, the first vibration component 31 is opposite to the magnetic circuit system 2, the second vibration component 32 is opposite to the magnetic circuit system 2, and a vibration direction of the first vibration component 31 and a vibration direction of the second vibration component 32 form an included angle.

According to the sound production device 100, the first vibration component 31 and the second vibration component 32 are arranged on the vibration system 3, so that the first vibration component 31 is opposite to the magnetic circuit system 2, and the second vibration component 32 is opposite to the magnetic circuit system 2, so that the magnetic circuit system 2 is utilized to simultaneously provide a magnetic field and a driving force for the first vibration component 31 and the second vibration component 32, the magnetic field utilization rate is improved, the cost is reduced, and the vibration direction of the first vibration component 31 and the vibration direction of the second vibration component 32 are arranged to be in an included angle, so that the vibration system 3 forms two mutually independent vibration radiation surfaces which are arranged in an included angle, the multifunctional application is realized, and the sound production effect is effectively improved.

In one embodiment, the sound generating apparatus 100 further includes a housing 1, where the housing 1 has a first mounting surface 123 and a second mounting surface 135, the first vibration assembly 31 is connected to the first mounting surface 123, and the second vibration assembly 32 is connected to the second mounting surface 135. The casing 1 is used for supporting and fixing the magnetic circuit system 2 and the vibration system 3. It will be appreciated that in other embodiments, the magnetic circuit system 2 may also have a support portion for supporting and fixing the first vibration assembly 31 and the second vibration assembly 32.

Alternatively, as shown in fig. 3 to 9 and 16, the casing 1 includes a first casing 12 and a second casing 13 that are disposed at an included angle, the first casing 12 and the second casing 13 enclose a mounting cavity, the magnetic circuit system 2 is disposed in the mounting cavity, the first casing 12 has a first mounting surface 123, the second casing 13 has a second mounting surface 135, the first vibration component 31 is connected to the first mounting surface 123 of the first casing 12 and is opposite to the magnetic circuit system 2, the second vibration component 32 is connected to the second mounting surface 135 of the second casing 13 and is opposite to the magnetic circuit system 2, and the vibration direction of the first vibration component 31 is disposed at an included angle to the vibration direction of the second vibration component 32. Alternatively, the first housing 12 and the second housing 13 are integrally formed, thus improving the structural strength and stability of the housing 1. It will be appreciated that the first housing 12 and the second housing 13 enclose a mounting cavity, which may be a through cavity or a through slot structure. Alternatively, the first housing 12 and the second housing 13 are disposed vertically.

In this embodiment, the first housing 12 has a rectangular structure, the first housing 12 has two opposite long sides and two short sides, two ends of the short sides are respectively connected to the two long sides, and two ends of the long sides are respectively connected to the two short sides. It will be appreciated that the second housing 13 is connected to the long side or the short side of the first housing 12 such that the second housing 13 is disposed perpendicular to the first housing 12.

It will be appreciated that the second housing 13 may alternatively be a rectangular structure, where the second housing 13 has two opposite long sides and two short sides, two ends of the short sides are connected to the two long sides, and two ends of the long sides are connected to the two short sides. In the present embodiment, the first housing 12 and the second housing 13 share one long side or short side, that is, the first housing 12 and the second housing 13 have a shared side in common. The first housing 12 defines a first opening 121 at two long sides and two short sides, and the second housing 13 defines a second opening 131 at two long sides and two short sides, the first opening 121 and the second opening 131 being respectively communicated with the mounting chamber. Alternatively, the first opening 121 and the second opening 131 are located at adjacent two surfaces of the housing 1.

When the housing 1 is a metal member, the magnetic circuit 2 and the housing 1 are fixed by adhesion or welding. In another embodiment, when the housing 1 is formed by injection molding, the side magnetic conduction plate of the magnetic circuit system 2 is first injection molded in the housing 1 as an insert, or the magnetic circuit system 2 and the housing 1 are fixed by adhesion, and then the other parts are fixed by adhesion, which is not limited herein.

In the present embodiment, the magnetic circuit system 2 is disposed in the installation cavity of the housing 1 and is connected to the first casing 12 and the second casing 13 of the housing 1. The vibration system 3 is connected to the first casing 12 and the second casing 13 of the housing 1, and is opposed to the magnetic circuit system 2. It can be understood that the first vibration component 31 of the vibration system 3 is connected with the first casing 12 and covers the first opening 121, the second vibration component 32 is connected with the second casing 13 and covers the second opening 131, so that the first casing 12 and the second casing 13 of the casing 1, the first vibration component 31 and the second vibration component 32, and the magnetic circuit system 2 jointly enclose a vibration space.

It can be appreciated that the first vibration assembly 31 is opposite to the magnetic circuit system 2, and the second vibration assembly 32 is opposite to the magnetic circuit system 2, so that the first vibration assembly 31 and the second vibration assembly 32 share the magnetic circuit system 2, thereby improving the magnetic field utilization rate and reducing the cost of the sound generating device 100. In the present embodiment, the vibration direction of the first vibration component 31 is disposed at an angle to the vibration direction of the second vibration component 32. Alternatively, the vibration direction of the first vibration member 31 is perpendicular to the vibration direction of the second vibration member 32.

In the present embodiment, the magnetic circuit system 2 provides the magnetic field and the driving force for the first vibration assembly 31 and the second vibration assembly 32 to drive the first vibration assembly 31 and the second vibration assembly 32 to vibrate and sound, respectively, so as to improve the sound emitting effect.

According to the sound generating device 100, the shell 1 is arranged to be the first shell 12 and the second shell 13 which are arranged at the included angle, and the installation cavity is formed by surrounding, so that the magnetic circuit system 2 and the vibration system 3 are installed and fixed by utilizing the installation cavity, the design and the assembly procedures of the sound generating device 100 are simplified, and the production is facilitated.

In an embodiment, the size of the magnetic circuit system 2 along the vibration direction of the first vibration component 31 is smaller than the size of the magnetic circuit system along the vibration direction of the second vibration component 32, so that the size of the sound generating device 100 can be reduced, which is convenient for the miniaturized design of the sound generating device 100.

In an embodiment, the magnetic circuit system 2 includes a basin frame 21, a first magnetic circuit portion 22 and a second magnetic circuit portion 23, wherein the first magnetic circuit portion 22 is disposed on the basin frame 21 and opposite to and spaced from the first vibration assembly 31, the first magnetic circuit portion 22 is provided with a first magnetic gap 221, the second magnetic circuit portion 23 is disposed on the basin frame 21 opposite to and spaced from the second vibration assembly 32, and the second magnetic circuit portion 23 is disposed on a side of a portion of the first magnetic circuit portion 22 facing away from the first vibration assembly 31 and cooperates with the first magnetic circuit portion 22 to form a second magnetic gap 231.

In the present embodiment, as shown in fig. 5 to 9 and 16, the basin frame 21 of the magnetic circuit 2 provides a mounting and fixing base for the first magnetic circuit portion 22 and the second magnetic circuit portion 23, the first magnetic circuit portion 22 and the second magnetic circuit portion 23 are disposed on the side of the basin frame 21 facing the housing 1, and the magnetic circuit 2 is connected to the first casing 12 and the second casing 13 of the housing 1 through the first magnetic circuit portion 22 and the second magnetic circuit portion 23.

It will be appreciated that the first magnetic circuit portion 22 and the second magnetic circuit portion 23 may be adhesively attached to the frame 21. The basin stand 21 may be a magnetic conductive plate or a magnetic conductive basin stand 21, which is not limited herein. The first magnetic circuit portion 22 and the second magnetic circuit portion 23 may be connected to the first casing 12 and the second casing 13 of the housing 1 by bonding, welding, or the like, which is not limited herein.

In the present embodiment, by providing the first magnetic gap 221 in the first magnetic circuit portion 22, the first vibration assembly 31 is provided with a space for avoiding and vibrating by using the first magnetic gap 221. Through setting up second magnetic circuit part 23 in the side of part first magnetic circuit part 22 back to first vibration subassembly 31 to with second vibration subassembly 32 relatively and the interval, make second magnetic circuit part 23 and the cooperation of part first magnetic circuit part 22 form second magnetic gap 231, thereby when utilizing second magnetic gap 231 to provide dodge and vibration space for second vibration subassembly 32, make first vibration subassembly 31 and second vibration subassembly 32 share part first magnetic circuit part 22, in order to improve the magnetic field utilization ratio of magnetic circuit system 2, effectively reduce the cost.

In order to facilitate the installation and fixing of the first magnetic circuit portion 22 and the second magnetic circuit portion 23, and to make the first magnetic circuit portion 22 and the second magnetic circuit portion 23 opposite to the first vibration assembly 31 and the second vibration assembly 32, respectively, in an embodiment, the basin stand 21 includes a first section 211, a second section 212 and a third section 213 connected in sequence, where the first section 211 and the third section 213 are disposed at an angle with respect to the second section 212 and are located on opposite sides of the second section 212; part of the first magnetic circuit portion 22 is provided in the first section 211 and the second magnetic circuit portion 23 is provided in the third section 213.

In the present embodiment, as shown in fig. 2, 5 to 9 and 16, the first section 211, the second section 212 and the third section 213 of the basin stand 21 are integrally formed. Optionally, the first section 211, the second section 212 and the third section 213 form a Z-shaped structure, so that a height difference is formed between the first section 211 and the third section 213 by using the second section 212, thereby facilitating the mounting and fixing of the first magnetic circuit portion 22 by using the first section 211 of the basin stand 21, the mounting and fixing of the second magnetic circuit portion 23 by using the second section 212 and the third section 213 of the basin stand 21, and the second magnetic circuit portion 23 is located below a portion of the first magnetic circuit portion 22 corresponding to the third section 213, so that the second vibration assembly 32 shares a portion of the first magnetic circuit portion 22 while improving the structural compactness.

Optionally, the first section 211 and the third section 213 are parallel to the first housing 12, or the second section 212 is parallel to the second housing 13, so that the appearance of the sound generating device 100 is more regular and is convenient to be assembled in the external environment. The second magnetic circuit portion 23 may further be connected to the second segment 212, increasing the connection reliability of the second partial magnetic circuit.

In the sound generating apparatus 100 of the present invention, the first magnetic circuit portion 22 includes a central magnetic circuit portion 222 and a side magnetic circuit portion 223, the side magnetic circuit portion 223 being provided outside the central magnetic circuit portion 222 and being spaced apart from the central magnetic circuit portion 222 to form the first magnetic gap 221.

As shown in fig. 3 to 9 and 16, a part of the central magnetic circuit portion 222 and a part of the side magnetic circuit portion 223 of the first magnetic circuit portion 22 are mounted and fixed to the first section 211 of the basin stand 21, and the first magnetic circuit portion 22 is connected and fixed to the first casing 12 of the housing 1 through the side magnetic circuit portion 223. Alternatively, the basin stand 21 is adhesively connected to the central magnetic circuit portion 222 and the side magnetic circuit portion 223, and the side magnetic circuit portion 223 is adhesively connected to the first case 12 of the housing 1.

It will be appreciated that the central magnetic circuit portion 222 includes a central magnet and a central washer arranged in a stack, the central magnet being arranged between the central washer and the basin 21, and the side magnetic circuit portion 223 includes side magnets and Bian Huasi arranged in a stack, the side magnets being arranged between Bian Huasi and the basin 21. It will be appreciated that Bian Huasi of the side magnetic circuit portion 223 can be adhesively attached to the housing 1. Alternatively, bian Huasi is an integral structure with the housing 1.

In this embodiment, the central washer and Bian Huasi may be selected as a magnetically permeable plate structure. The central magnet 22211 and the central washer have the same structural outline, and the central magnet and the central washer may be alternatively formed in a plate-like structure or a ring-like structure, which is not limited herein. The side magnets and Bian Huasi have the same structural outline, and the side magnets and Bian Huasi may be alternatively plate-like structures or ring-like structures, which are not limited herein.

It will be appreciated that the side magnetic circuit portion 223 may be of annular configuration, with the annular side magnetic circuit portion 223 surrounding the central magnetic circuit portion 222 and spaced from the central magnetic circuit portion 222 to form the annular first magnetic gap 221. Alternatively, the side magnetic path portion 223 may have a circular ring shape, or a polygonal shape such as a quadrangle, a pentagon, a hexagon, or the like.

Of course, the side magnetic path portion 223 includes a plurality of side magnetic path portions 223 spaced apart and disposed around the center magnetic path portion 222.

In one embodiment, the side magnetic circuit portion 223 includes a plurality of side magnetic circuit portions 223 disposed around the center magnetic circuit portion 222 and spaced apart from the center magnetic circuit portion 222 to form the first magnetic gap 221, with adjacent two side magnetic circuit portions 223 being spaced apart to form a gap communicating with the first magnetic gap 221.

In one embodiment, the central magnetic circuit portion 222 and the side magnetic circuit portion 223 of the first magnetic circuit portion 22 are magnetized in the vertical direction, and the magnetizing directions of the central magnetic circuit portion 222 and the side magnetic circuit portion 223 are opposite. It will be appreciated that the center magnet 22211 of the center magnetic circuit portion 222 and the side magnet 22311 of the side magnetic circuit portion 223 are magnetized in the vertical direction, and that the magnetizing directions of the center magnet 22211 and the side magnet 22311 are opposite. It will be appreciated that such an arrangement may enable optimisation of the non-linear performance of the BL.

Alternatively, the magnetizing directions of the center magnetic circuit portion 222 and the side magnetic circuit portion 223 of the first magnetic circuit portion 22 are the same as the vibration directions of the first vibration assembly 31, that is, the first vibration assembly 31 vibrates in the vertical direction. It will be appreciated that the magnetizing directions of the center magnet of the center magnetic circuit portion 222 and the side magnet of the side magnetic circuit portion 223 are the same as the vibration direction of the first vibration assembly 31, that is, the center magnet of the center magnetic circuit portion 222 and the side magnet of the side magnetic circuit portion 223 are both magnetized in the vertical direction.

In one embodiment, the second magnetic circuit portion 23 is opposite and spaced from a portion of the central magnetic circuit portion 222 and a portion of the side magnetic circuit portion 223 to cooperatively form a second magnetic gap 231. It will be appreciated that the second magnetic circuit portion 23 is opposed to and spaced from a portion of the central magnetic circuit portion 222 to form a third sub-gap, and the second magnetic circuit portion 23 is opposed to and spaced from a portion of the side magnetic circuit portion 223 to form a fourth sub-gap, the third sub-gap and the fourth sub-gap being in communication and forming a second magnetic gap 231.

In the present embodiment, the central magnetic circuit portion 222 includes a central magnetic circuit 2221 and a first common magnetic circuit 2222 connected, the side magnetic circuit portion 223 includes a side magnetic circuit 2231 and a second common magnetic circuit 2232, the side magnetic circuit 2231 is located outside the central magnetic circuit 2221 and is spaced to form a first sub-gap 2211, the second common magnetic circuit 2232 is located on a side of the first common magnetic circuit 2222 facing away from the central magnetic circuit 2221 and is spaced to form a second sub-gap 2212, the first sub-gap 2211 communicates with the second sub-gap 2212 to form a first magnetic gap 221, the second magnetic circuit portion 23 opposes the first common magnetic circuit 2222 and is spaced to form a third sub-gap, the second magnetic circuit portion 23 opposes the second common magnetic circuit 2232 and is spaced to form a fourth sub-gap, the third sub-gap communicates with the fourth sub-gap, and is formed to form a second magnetic gap 231.

Alternatively, the second magnetic circuit portion 23 may be a unitary structure or a split structure. As one embodiment, as shown in fig. 16, the second magnetic circuit portion 23 includes a first magnet 233 and a second magnet 234 disposed at intervals, wherein the first magnet 233 is located below the first common magnetic circuit 2222 and opposite to and spaced apart from the first common magnetic circuit 2222 to form a third sub-gap, and the second magnet 234 is located below the second common magnetic circuit 2232 and opposite to and spaced apart from the second common magnetic circuit 2232 to form a fourth sub-gap, and the third sub-gap and the fourth sub-gap communicate and form a second magnetic gap 231.

In other embodiments, the second magnetic circuit portion 23 is a unitary structure, the first magnet 233 is a magnetized region of the second magnetic circuit portion 23, and the second magnet 234 is a magnetized region of the second magnetic circuit portion 23.

In the present embodiment, the central magnetic circuit 2221 of the central magnetic circuit portion 222 and the first common magnetic circuit 2222 may be integrally formed, or may be separately formed and integrally connected by bonding or the like. It will be appreciated that the central magnetic circuit 2221 and the first common magnetic circuit 2222 each include a central magnet 22211 and a central washer 22212, and the central washers of the central magnetic circuit 2221 and the first common magnetic circuit 2222 may be a unitary structure, i.e., the central magnetic circuit 2221 and the first common magnetic circuit 2222 share a central washer, which is not limited herein.

It will be appreciated that the side magnetic circuit portion 223 includes a side magnetic circuit 2231 and a second common magnetic circuit 2232, i.e., a portion of the side magnetic circuit portion 223 is the second common magnetic circuit 2232, and another portion of the side magnetic circuit portion 223 is the side magnetic circuit 2231. Alternatively, the side magnetic circuit 2231 and the second common magnetic circuit 2232 of the side magnetic circuit portion 223 may be integrally connected or may be separately provided.

In the present embodiment, the side magnetic path portion 223 includes a plurality of side magnetic path portions 223 including the side magnetic path 2231 and the second common magnetic path 2232. Alternatively, the side magnetic circuit portion 223 includes four, one being the second common magnetic circuit 2232 and three being the side magnetic circuit 2231. It can be appreciated that the three side magnetic circuits 2231 are spaced apart from the central magnetic circuit 2221 to form a first sub-gap 2211, the second common magnetic circuit 2232 is positioned on a side of the first common magnetic circuit 2222 facing away from the central magnetic circuit 2221 to form a second sub-gap 2212, and the first sub-gap 2211 communicates with the second sub-gap 2212 to form the first magnetic gap 221.

The side magnetic circuit 2231 and the second common magnetic circuit 2232 each include a side magnet and Bian Huasi that are stacked, and the side magnet is disposed between Bian Huasi and the basin frame 21.

In order to enable the magnetic circuit system 2 to simultaneously provide the magnetic field and the driving force for the first vibration assembly 31 and the second vibration assembly 32, the center magnetic circuit portion 222 and the side magnetic circuit portion 223 are magnetized in opposite directions along the vibration direction of the first vibration assembly 31, and the first magnet 233 and the second magnet 234 are magnetized in opposite directions along the vibration direction of the first vibration assembly 31, so that the magnetization directions of the first magnet 233 and the center magnetic circuit portion 222 are the same.

To ensure that the second magnetic circuit portion 23 cooperates with the first and second common magnetic circuits 2222, 2232 to provide a sufficient magnetic field, the thickness of the first common magnetic circuit 2222 is optionally greater than or equal to the thickness of the central magnetic circuit 2221. Optionally, the thickness of the second common magnetic circuit 2232 is greater than or equal to the thickness of the side magnetic circuit 2231. It will be appreciated that the magnet thicknesses of the first and second common magnetic circuits 2222, 2232 are greater than or equal to the magnet thicknesses of the center magnetic circuit 2221 and the side magnetic circuits 2231.

In the present embodiment, the thickness of the first magnet 233 is greater than or equal to the thickness of the central magnetic circuit 2221, and the thickness of the second magnet 234 is greater than or equal to the thickness of the side magnetic circuit 2231. Alternatively, the first and second common magnetic circuits 2222 and 2232 are magnetized in the vertical direction, and the magnetization directions of the magnets of the first and second common magnetic circuits 2222 and 2232 are opposite.

Alternatively, the first magnet 233 and the first common magnetic circuit 2222 are magnetized in the vertical direction, and the magnetization directions of the first magnet 233 and the magnets of the first common magnetic circuit 2222 are the same. The second magnet 234 and the second common magnetic circuit 2232 are magnetized in the vertical direction, and the magnetizing directions of the second magnet 234 and the magnets of the second common magnetic circuit 2232 are the same, so that the nonlinear performance of the BL can be optimized.

It will be appreciated that the magnetizing directions of the first magnet 233 and the first common magnetic circuit 2222 are the same as the vibration directions of the first vibration assembly 31, that is, the first vibration assembly 31 vibrates in the vertical direction. The magnetizing direction of the second magnet 234 and the second common magnetic path 2232 is the same as the vibration direction of the first vibration assembly 31.

In one embodiment, the second magnetic circuit portion 23 is opposite to and forms a second magnetic gap 231 between portions of the side magnetic circuit portion 223. As shown in fig. 3 to 9, the center magnetic circuit portion 222 includes a center magnetic circuit 2221, the side magnetic circuit portion 223 includes a side magnetic circuit 2231 and a second common magnetic circuit 2232, the side magnetic circuit 2231 is located outside the center magnetic circuit 2221 and forms a first sub-gap 2211 at intervals, the second common magnetic circuit 2232 is located outside the center magnetic circuit 2221 and forms a second sub-gap 2212 at intervals, and the first sub-gap 2211 communicates with the second sub-gap 2212 to form a first magnetic gap 221; the second magnetic circuit portion 23 and the second common magnetic circuit 2232 form a second magnetic gap 231.

In the present embodiment, the side magnetic circuit portion 223 includes the side magnetic circuit 2231 and the second common magnetic circuit 2232, that is, a part of the side magnetic circuit portion 223 is the second common magnetic circuit 2232, and the other part of the side magnetic circuit portion 223 is the side magnetic circuit 2231. Alternatively, the side magnetic circuit 2231 and the second common magnetic circuit 2232 of the side magnetic circuit portion 223 may be integrally connected or may be separately provided.

In the present embodiment, the side magnetic path portion 223 includes a plurality of side magnetic path portions 223 including the side magnetic path 2231 and the second common magnetic path 2232. Alternatively, the side magnetic circuit portion 223 includes four, one being the second common magnetic circuit 2232 and three being the side magnetic circuit 2231. It can be appreciated that the three side magnetic circuits 2231 are spaced apart from the outer side of the central magnetic circuit 2221 to form a first sub-gap 2211 with the central magnetic circuit 2221, the second common magnetic circuit 2232 is spaced apart from the outer side of the central magnetic circuit 2221 to form a second sub-gap 2212 with the central magnetic circuit 2221, and the first sub-gap 2211 communicates with the second sub-gap 2212 to form the first magnetic gap 221. Optionally, the thickness of the second common magnetic circuit 2232 is less than or equal to the thickness of the side magnetic circuit 2231.

Note that, the central magnetic circuit 2221 includes a central magnet 22211 and a central washer 22212 that are stacked, the central magnet 22211 is disposed between the central washer 22212 and the basin frame 21, the side magnetic circuit 2231 includes a first side magnet 22311 and a first side washer 22312 that are stacked, the first side magnet 22311 is disposed between the first side washer 22312 and the basin frame 21, the second common magnetic circuit 2232 includes a second common washer 22322, and the first side washer 22312 and the second common washer 22322 are disposed opposite to the central washer 22212.

In one embodiment, the second magnetic circuit portion 23 includes a third magnet 232, the third magnet 232 being opposite to and forming a second magnetic gap 231 between the second common magnetic circuit 2232.

In the present embodiment, the second common magnetic circuit 2232 can be arranged in various ways. As shown in fig. 7, in order to reduce the thickness of the sound generating apparatus 100, the second common magnetic circuit 2232 may include only the second common washer 22322, and the third magnet 232 is opposite to and spaced apart from the second common washer 22322 with the second magnetic gap 231 formed therebetween. It will be appreciated that the second common washer 22322 is opposite the central washer 22212, and that the thickness of the second common washer 22322 is less than the thickness of the side magnetic circuit 2231.

Alternatively, as shown in fig. 6, in order to increase the magnetic field strength of the second magnetic gap 231, the second common magnetic circuit 2232 includes a second common washer 22322 and a second common magnet 22321 provided on a side of the second common washer 22322 near the basin frame 21, and the third magnet 232 is opposite to and spaced from the second common magnet 22321 to form the second magnetic gap 231 therebetween. Optionally, the thickness of the second common magnet 22321 is less than the thickness of the first side magnet 22311, thus still allowing for a smaller thickness dimension of the sound emitting device 100.

As shown in fig. 5, in order to further compensate for the magnetic field loss of the second sub-magnetic gap, the second common magnetic circuit 2232 may include a second common washer 22322 and a second common magnet 22321 provided on the second common washer 22322 near the second magnetic circuit portion 23, the second common magnet 22321 may include a main body portion 22323 and an extension portion 22324 bent and extended from one end of the main body portion 22323 near the second sub-gap 2212, the extension portion 22324 abuts against the third magnet 232 or the basin 21, and a second magnetic gap 231 is formed between the main body portion 22323 and the third magnet 232. Optionally, the thickness of the second common magnet 22321 is less than or equal to the thickness of the first side magnet 22311.

In other embodiments, the second magnetic gap 231 may be formed differently. Optionally, the second common magnetic circuit 2232 includes a second common magnet 22321, the third magnet 232 includes a second main body portion and a second extension portion bent and extended from one end of the second main body portion near the second sub-gap 2212, the second extension portion abuts against the second common magnet 22321, and a second magnetic gap 231 is formed between the second main body portion and the second common magnet 22321.

In an embodiment, the thickness of the third magnet 232 is less than or equal to the thickness of the side magnetic circuit 2231, so as to provide a sufficient magnetic field strength for the second magnetic gap 231 and reduce the height of the sound generating device 100.

To ensure air pressure balance of the vibration space within the sound emitting device 100, vibration balance of the first vibration assembly 31 and the second vibration assembly 32 is ensured. In an embodiment, the basin stand 21 is provided with the air release hole 214, so as to prevent impurities or sound absorbing particles from entering the sound generating device 100 from the air release hole 214 to affect the performance of the sound generating device 100, and the sound generating device 100 further includes the air permeable separator 4 corresponding to the air release hole 214.

In one embodiment, as shown in fig. 3 and 4, the air release holes 214 are disposed at four corners of the first section 211, and the air release holes 214 correspond to the first magnetic gap 221 and/or the gap formed between the two side magnetic circuit portions 223.

In an embodiment, the first vibration assembly 31 includes a first diaphragm 311 and a first voice coil 312, wherein the first diaphragm 311 is connected to the first housing 12, the first voice coil 312 surrounds the central magnetic circuit portion 222, one end of the first voice coil 312 is connected to the diaphragm, and the other end is suspended in the first magnetic gap 221.

In this embodiment, the first diaphragm 311 includes a central portion, a ring portion surrounding the central portion, and a fixing portion outside the ring portion, where the fixing portion is connected to the first casing 12 of the housing 1, so that the first diaphragm 311 covers the first opening 121. It can be understood that the central portion, the folded ring portion and the fixing portion of the first diaphragm 311 are integrally formed. The folded ring part is arranged around the central part and is positioned between the central part and the fixed part, and the folded ring part can be of an upward or downward convex structure. The first diaphragm 311 is connected and fixed with the first casing 12 of the housing 1 of the sound generating device 100 through a fixing portion, so as to improve the connection stability and the tightness between the housing 1 and the first diaphragm 311.

It is understood that, in order to increase the effective vibration area of the first diaphragm 311, the fixing portion may be formed by extending the outer side of the folded ring portion downward or upward, so that the fixing portion is fixedly connected to the inner side wall or the outer side wall of the housing 1.

In an embodiment, the first diaphragm 311 is provided with a conductive layer, one end of the first voice coil 312 is connected to the first diaphragm 311, a lead wire of the first voice coil 312 is electrically connected to the conductive layer, one end of the conductive layer away from the first voice coil 312 is electrically connected to the first conductive insert 122 in the housing 1, and an external circuit is electrically connected to the conductive layer through the first conductive insert 122, so that the first voice coil 312 is electrically connected to the external circuit.

Alternatively, the first diaphragm 311 is disposed in a square shape, and the conductive layer may be disposed at a corner portion of the first diaphragm 311, although the conductive layer may also be disposed at a major axis side or a minor axis side of the first diaphragm 311, which is not limited herein.

In this embodiment, the conductive layer is capable of conducting electricity, so that the first voice coil 312 is in circuit connection with an external circuit through the conductive layer. It can be appreciated that the conductive layer may be disposed on the first diaphragm 311 by bonding, or may be disposed on the first diaphragm 311 by spraying. Optionally, the conductive layer is coated on the side of the first diaphragm 311 facing the magnetic circuit system 2, for example, a coating structure is formed after curing by a film coating method, which is not limited herein.

In this embodiment, the first voice coil 312 may be a square or racetrack ring structure, and the first voice coil 312 has two long axis sides and two short axis sides connected end to end, that is, the two short axis sides of the first voice coil 312 are opposite and spaced apart, and the two long axis sides are opposite and spaced apart, so that the long axis sides and the short axis sides are connected end to form the ring structure.

In this embodiment, the hollow hole is formed in the central portion of the first diaphragm 311, so that the overall weight of the first diaphragm 311 can be effectively reduced. Optionally, a hollow hole is formed in the central position of the central portion, and the hollow hole can be a through hole or a hollow hole or an opening. Alternatively, the number of the hollowed-out holes may be one or more, which is not limited herein.

In order to strengthen the structural strength of the first diaphragm 311, the first diaphragm 311 is prevented from being deformed during the vibration process. In an embodiment, the first vibration assembly 31 further includes a first dome 314, and the first dome 314 is connected to a side of the first diaphragm 311 facing away from the first voice coil 312. It can be understood that, through setting up first dome 314 in the central part of first vibrating diaphragm 311, first dome 314 is connected in the central part to cover the fretwork hole, strengthen the structural strength of first vibrating diaphragm 311 on the one hand, on the other hand also can avoid outside impurity or dust to get into sound generating mechanism 100's inside through the fretwork hole, avoid first vibrating diaphragm 311 can take place shrink deformation volume aggravation simultaneously at the vibration in-process, thereby reduce sound generating mechanism 100's THD distortion is higher, promote audio frequency effect.

In an embodiment, as shown in fig. 4, the first vibration assembly 31 further includes a first centering support 313, one end of the first centering support 313 is connected to the housing 1, and the other end of the first centering support 313 is connected to an end of the first voice coil 312 away from the first diaphragm 311.

In the present embodiment, one end of the first centering support 313 is connected to the first casing 12 of the housing 1, and the other end of the first centering support 313 is connected to a side of the first voice coil 312 facing away from the first diaphragm 311. It can be understood that, by arranging the first centering support 313, one end of the first centering support 313 is connected with the first shell 12 of the housing 1, and the other end of the first centering support 313 is connected with the first voice coil 312, so that the first centering support 313 is utilized to balance and stabilize the vibration of the first voice coil 312 driving the first vibrating diaphragm 311, and the first voice coil 312 is prevented from driving the first vibrating diaphragm 311 to swing or polarization.

Optionally, the first centering support 313 includes four, and the four first centering support 313 are disposed corresponding to the four notches of the first magnetic circuit portion 22 of the magnetic circuit system 2. Alternatively, the first centering support 313 includes two, and the two first centering support 313 are disposed at both sides of the short axis of the first voice coil 312. In this embodiment, the first centering support 313 includes an outer fixing portion, an inner fixing portion, and an elastic portion connected between the outer fixing portion and the inner fixing portion, the outer fixing portion is connected to the first casing 12 of the housing 1, and the inner fixing portion is connected to the first voice coil 312.

The first centering piece 313 can adopt PI material to make, alternatively, first centering piece 313 can adopt FPCB to make, perhaps be provided with conductive circuit in the first centering piece 313, so the one end of usable first centering piece 313 is connected with the lead wire conduction of first voice coil 312, and the other end of first centering piece 313 is fixed on shell 1 for with outside circuit connection switch on, so utilize first centering piece 313 to connect outside circuit and first voice coil 312 switch on, effectively avoid the lead wire of first voice coil 312 to take place the broken wire risk at vibration in-process.

In an embodiment, as shown in fig. 3 to 9 and 16, the second vibration assembly 32 includes a second diaphragm 321 and a second voice coil 323, wherein the second diaphragm 321 is connected to the second housing 13, and has a connection region 3221 connected to the second voice coil 323.

In this embodiment, the second voice coil 323 may be a flat voice coil, and the second voice coil 323 may be a square or racetrack ring structure. It will be appreciated that the second voice coil 323 has two long axis sides and two short axis sides connected end to end, and each short axis side is disposed between the two long axis sides, that is, the two short axis sides of the second voice coil 323 are opposite and spaced, and the two long axis sides are opposite and spaced, so that the long axis sides and the short axis sides are connected end to form a ring structure.

In one embodiment, as shown in fig. 16, the second magnetic circuit portion 23 is opposite to and spaced apart from a part of the central magnetic circuit portion 222 and a part of the side magnetic portions to form a second magnetic gap 231, and the second voice coil 323 is disposed in the second magnetic gap 231, and at this time, both long axis sides of the second voice coil 323 are disposed in the second magnetic gap 231.

More specifically, the second magnetic path portion 23 is opposed to and spaced from a part of the central magnetic path portion 222 to form a third sub-gap, the second magnetic path portion 23 is opposed to and spaced from a part of the side magnetic path portion 223 to form a fourth sub-gap, the third sub-gap and the fourth sub-gap communicate, and form a second magnetic gap 231, one long axis side of the second voice coil 323 is provided in the third sub-gap, and the other long axis side is provided in the fourth sub-gap.

In an embodiment, as shown in fig. 3 to 9, the second magnetic circuit portion 23 is opposite to a part of the side magnetic portion and forms a second magnetic gap 231 at intervals, one long axis side of the second voice coil 323 is connected to the second diaphragm 321, and the other long axis side is disposed in the second magnetic gap 231.

In one embodiment, as shown in fig. 5 to 7 and 9, the plane of the second voice coil 323 is perpendicular to the vibration direction of the first vibration component 31, that is, the plane of the second voice coil 323 is parallel to the first mounting surface 123. By the design, the magnetic circuit appearance of the side magnetic circuit part 223 and the second magnetic circuit part 23 is more regular, and the production and assembly cost of the magnetic circuit system 2 is reduced.

In an embodiment, as shown in fig. 3 to 9, the first housing 12 and the second housing 13 have a common edge 133 that is shared, defining that the first vibration assembly 31 vibrates in the first direction, and the second housing 13 includes the common edge 133 and the first edge 134 that are distributed along the first direction, and in the first direction, an outer edge of the common edge 133 has a first extension 1331 that extends beyond the magnetic circuit 2 and is used for mounting the first diaphragm 311, and an outer edge of the first edge 134 is flush with the magnetic circuit 2; defining that the second vibration assembly 32 vibrates in the second direction, a side of the common edge 133 away from the first edge 134 is provided with a second extension 1332 for mounting the second diaphragm 321 in an extending manner in the second direction, and the connection region 3221 is offset from a center position of the second diaphragm 321 in the first direction and is located at a side of the center position away from the first vibration assembly 31.

It can be understood that, in the present embodiment, in the second direction, the edge of the second diaphragm 321 near the basin frame 21 is approximately flush with the magnetic circuit system 2, and the edge far away from the magnetic circuit system 2 can extend and fix the second extension part 1332 on the fixed edge, so that the vibration area of the second diaphragm 321 is increased as much as possible on the premise of ensuring the proper position of the second voice coil 323, and the sound production performance of the second diaphragm 321 is improved.

In an embodiment, to enhance the structural strength of the second diaphragm 321, the second diaphragm 321 further includes a second dome 322, the second dome 322 is disposed at the center of the second diaphragm 321, the second voice coil 323 is connected to the second dome 322, and the second dome 322 has a connection area 3221 connected to the second voice coil 323. It will be appreciated that the connection region 3221 is located on a side of the second dome 322 that is remote from the first vibration assembly 31 at a center position.

Of course, in other embodiments, the plane of the second voice coil 323 and the second mounting surface 135 are disposed vertically. Therefore, the second voice coil 323 can be adjusted to be at the center of the second diaphragm 321, so that the second diaphragm 321 is symmetrical with respect to the second voice coil 323, and the sound effect is improved.

Specifically, the side magnetic path portion 223 has a first surface facing the second magnetic path portion 23, the second magnetic path portion 23 has a second surface facing the side magnetic path portion 223, the first surface and the second surface are both disposed obliquely and parallel to each other, a second magnetic gap 231 is formed therebetween, and an extending direction of the second magnetic gap 231 is disposed perpendicularly to the second mounting surface 135.

In an embodiment, the aspect ratio of the inner diameter of the second voice coil 323 is less than or equal to 20, so as to reduce the process winding difficulty of the second voice coil 323. Alternatively, the second voice coils 323 include two, and the aspect ratio of the inner diameter of each second voice coil 323 is 20 or less, and the second voice coils 323 are distributed along the long axis direction of the second voice coils 323. As can be appreciated, the second voice coil 323 is distributed along the length of the second magnetic gap 231.

In an embodiment, the second diaphragm 321 protrudes toward a side away from the magnetic circuit system 2, or alternatively, the second diaphragm 321 protrudes toward a side close to the magnetic circuit system 2. Therefore, when the sound generating device 100 is assembled in electronic equipment such as intelligent glasses, the appearance of the electronic equipment can be better matched, the occupation of the space of the electronic equipment is reduced, and the sound generating device is flexibly selected according to actual conditions.

In an embodiment, as shown in fig. 13 to 14 and 16, the sound generating device 100 further includes a sound guiding pipe 61, and the sound guiding pipe 61 is disposed corresponding to the second vibration assembly 32. It can be understood that the sound guide pipe 61 is of a hollow structure, so that the sound emitted by the second diaphragm 321 of the second vibration assembly 32 can be smoothly transmitted through the sound guide pipe 61, and the sound producing effect of the second vibration assembly 32 is improved.

Further, as shown in fig. 13 to 14, the first housing 12 and the second housing 13 are vertically disposed, and the side of the sound guide tube 61 away from the second vibration assembly 32 is an inclined surface, and an included angle is formed between the inclined surface and the second housing 13. In this way, the assembly of the sound generating device 100 and the external device, for example, the assembly with the electronic apparatus is facilitated, and the inclined surface of the sound guide pipe 61 can be force-fastened while the force is applied to the mounting surface of the first housing 12, so that the operability of the sound generating device 100 at the time of the assembly is improved. Further, the distance between the end of the inclined surface close to the first vibration assembly 31 and the second vibration assembly 32 is smaller than the distance between the end of the inclined surface far from the first vibration assembly 31 and the second vibration assembly 32.

As shown in fig. 14, the inner wall of the device case 7 of the electronic device is provided with a first mounting surface 71 and a second mounting surface 72 corresponding to the first mounting surface 123 and the inclined surface, respectively, and an angle between the first mounting surface 71 and the second mounting surface 72 is greater than 90 °, and the first mounting surface 71 and the first mounting surface 123 and the second mounting surface 72 and the inclined surface are hermetically connected. As can be appreciated, when the first mounting surface 123 is assembled by force, the inclined surface is inclined to the first mounting surface 71, so that the inclined surface can be fastened by force, and the sealing performance between the inclined surface and the second mounting surface 72 is improved, thus improving the operability of the sound generating device 100 during assembly.

As can be appreciated, the surface of the sound guide pipe 61 far from the second vibration assembly 32 is provided with sealing foam 62, so as to improve the tightness between the sound guide pipe 61 and external devices and improve the sound quality of the sound generating apparatus 100.

Further, the surface of the second housing 1 is provided with a heat-melting column, and the sound guiding pipeline 61 is correspondingly provided with a fixing part, so that the second housing 1 and the sound guiding pipeline 61 are fixed in a heat-melting manner, and the installation reliability of the sound guiding pipeline 61 is improved.

Of course, in other embodiments of the sound generating device 100, as shown in fig. 15, the sound generating device 100 may not be provided with the sound guide tube 61, and the first mounting surface 123 may be horizontally disposed, and the second mounting surface 135 may be obliquely disposed, i.e., the included angle between the first mounting surface 123 and the second mounting surface 135 is greater than 90 °, so as to improve assembly operability. In this way, by disposing the second mounting surface 135 obliquely, the assembling operability of the sound generating apparatus 100 can also be improved.

In the sound generating device 100 of the present invention, after the first voice coil 312 disposed in the first magnetic gap 221 receives an externally varying ac signal, the first voice coil is driven by the magnetic force of the first magnetic circuit portion 22 of the magnetic circuit system 2 to reciprocate to cut magnetic lines of force, so as to drive the first diaphragm 311 of the first vibration assembly 31 in the vibration system 3 to vibrate and generate sound in the vertical direction. After the second voice coil 323 receives the alternating current signal of the external circuit, the magnetic force in the second magnetic gap 231 formed by the second magnetic circuit part 23 and the first magnetic circuit part 22 in the magnetic circuit system 2 is fully utilized to drive the magnetic force to reciprocate to cut magnetic force lines in the left-right direction, so that the magnetic field of the magnetic circuit system 2 is fully utilized, the first voice coil 312 and the second voice coil 323 respectively drive the first vibrating diaphragm 311 and the second vibrating diaphragm 321 to vibrate and sound, and the sound production effect of the sound production device 100 is effectively improved.

In the sound generating device 100 of the present invention, the first vibration component 31 is used for bass sound production, and the second vibration component 32 is used for treble sound production, so that the bandwidth of the sound generating device 100 can be expanded, and the tone of the sound generating device 100 is full and round.

Specifically, the sound generating apparatus 100 has a frequency division point F1, and when the sound generating apparatus 100 is used in an electronic device, fh (front cavity resonance frequency) corresponding to the first vibration component 31 is equal to or greater than 4kHz and equal to or less than 7kHz, and F1 > Fh. In this way, abrupt phase changes of the sound waves of the first vibration assembly 31 and the second vibration assembly 32 at the frequency division point F1 can be avoided, and the vibration directions of the first vibration assembly 31 and the second vibration assembly 32 at the frequency division point F1 are ensured to be consistent, so that the sound pressure of the sound generating device 100 is stable.

Optionally, F1 is greater than or equal to 6kHz, so that the sound pressure level curve of the sound generating device 100 formed by combining the first vibration component 31 and the second vibration component 32 is smoother, and no larger dip is generated, and the hearing feeling is natural.

Further, the division point F1 is 6kHz or more and 10kHz or less, and the division point F1 may be 6kHz, 6.5kHz, 7kHz, 7.5kHz, 8kHz, 8.5kHz, 9kHz, 9.5kHz, 10kHz, or the like. Thus, the sound pressure levels of the first vibration component 31 and the second vibration component 32 can be better joined at the frequency division point, and the sound quality is richer and natural. The sounding device 100 in this embodiment has deep and powerful bass sounds and rich and clear high-pitched sounds.

In an embodiment, a conductive insert is disposed in the housing 1 of the sound generating apparatus 100, and the conductive insert includes a first conductive insert 122 and a second conductive insert 132, and the first conductive insert 122 and the second conductive insert 132 are electrically connected to an external circuit.

As shown in fig. 10 and 11, the first conductive insert 122 electrically connects the first vibration assembly 31 and the external circuit, and the second conductive insert 132 electrically connects the second vibration assembly 32 and the external circuit, thus achieving the electrical connection of the first voice coil 312 and the second voice coil 323 with the external circuit. Specifically, the first conductive insert 122 has both ends exposed to the housing 1 to form a first inner pad 1221 and a first outer pad, the second conductive insert 132 has both ends exposed to the housing 1 to form a second inner pad 1321 and a second outer pad, the first inner pad 1221 is electrically connected to the first vibration assembly 31, the second inner pad 1321 is electrically connected to the second vibration assembly 32, and the first outer pad and the second outer pad are electrically connected to an external circuit.

As one of the embodiments, a first external pad is electrically connected to a second external pad through the electrical connector 5 and to an external circuit. I.e., one of the second outer pads forms a common outer pad 14, through which an external circuit is electrically connected to both the first voice coil 312 and the second voice coil 323. Optionally, the first conductive insert 122 is disposed on the first housing 12, and the second conductive insert 132 is disposed on the second housing 13. By the design, the process and material cost is reduced, and mass production is facilitated.

In other embodiments, a first conductive insert 122 is adjacent to a second conductive insert 132, and the first and second outer pads are integrally formed to form a common outer pad 14, and the external circuit is electrically connected to both the first and second voice coils 312 and 323 through the common outer pad 14.

Alternatively, the first conductive insert 122 and the second conductive insert 132, which are adjacent to each other, are provided at the connection region 3221 of the first housing 12 and the second housing 13. The design skillfully utilizes the appearance structure of the shell 1, reduces the injection molding number and process of the conductive inserts, reduces the size of the external electric connector 5 (flexible circuit board), and further reduces the production cost.

The invention also provides electronic equipment, which comprises an equipment shell and the sounding device 100, wherein the sounding device 100 is arranged on the equipment shell. The specific structure of the sound generating device 100 refers to the foregoing embodiments, and because the electronic device adopts all the technical solutions of all the foregoing embodiments, the sound generating device at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described in detail herein.

The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present invention.

Claims

1. A sound generating device, characterized in that the sound generating device comprises a vibration system and a magnetic circuit system, wherein:

2. The sound generating device according to claim 1, wherein the sound generating device comprises a housing, the housing comprises a first housing and a second housing which are arranged at an included angle, a mounting cavity is formed by surrounding the first housing and the second housing, and the magnetic circuit system is arranged in the mounting cavity; the first vibration assembly is connected with the first shell, the second vibration assembly is connected with the second shell, wherein,

And/or the first shell and the second shell are vertically arranged;

3. The sound emitting apparatus of claim 1, wherein the sound emitting apparatus comprises,

the first magnetic circuit portion includes a central magnetic circuit portion and a side magnetic circuit portion, the side magnetic circuit portion being provided outside the central magnetic circuit portion and being spaced apart from the central magnetic circuit portion to form the first magnetic gap;

4. The sound emitting device of claim 3, wherein the central magnetic circuit portion includes a central magnetic circuit, the side magnetic circuit portion includes a side magnetic circuit and a second common magnetic circuit, the side magnetic circuit is located outside the central magnetic circuit and spaced to form a first sub-gap, the second common magnetic circuit is located outside the central magnetic circuit and spaced to form a second sub-gap, the first sub-gap is in communication with the second sub-gap to form the first magnetic gap;

5. The sound emitting apparatus of claim 4 wherein the second common magnetic circuit comprises a second common magnet, the third magnet being spaced from the second common magnet with the second magnetic gap formed therebetween;

6. The sound generating apparatus according to claim 2, wherein the basin stand comprises a first section, a second section and a third section which are sequentially connected, wherein the first section and the third section are respectively arranged at an included angle with the second section and are positioned on two opposite sides of the second section; part of the first magnetic circuit part is arranged on the first section, and the second magnetic circuit part is arranged on the third section.

7. The sound generating apparatus according to claim 6, wherein the tub is provided with a vent hole communicating with the first magnetic gap and/or the second magnetic gap, and the sound generating apparatus further comprises an isolation net provided corresponding to the vent hole;

8. The sound generating apparatus according to claim 2, wherein the first diaphragm is provided with a conductive layer, a lead wire of the first voice coil is electrically connected with the conductive layer, a first conductive insert is provided in the housing, the first conductive insert is used for being electrically connected with an external circuit, and an end of the conductive layer away from the first voice coil is electrically connected with the first conductive insert;

and/or, the first voice coil is an annular voice coil.

9. The sound generating apparatus according to any one of claims 1 to 8, wherein the second voice coil comprises two long-axis sides and two short-axis sides connected end to end, each of the short-axis sides is disposed between the two long-axis sides, one of the long-axis sides is connected to the second diaphragm, and the other long-axis side is disposed in the second magnetic gap.

10. The sound generating apparatus of claim 9, wherein the second diaphragm protrudes toward a side away from the magnetic circuit or toward a side closer to the magnetic circuit.

11. The sound emitting apparatus of any one of claims 1 to 10, wherein the first vibration assembly is for bass sound and the second vibration assembly is for treble sound.

12. An electronic device comprising a device housing and a sound emitting apparatus according to any one of claims 1 to 11, the sound emitting apparatus being provided to the device housing.