CN117729278A

CN117729278A - Sound production device and terminal equipment

Info

Publication number: CN117729278A
Application number: CN202310126674.5A
Authority: CN
Inventors: 赵国栋; 王继宗; 刘华伟; 王景伟
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-11-15
Filing date: 2023-02-15
Publication date: 2024-03-19
Also published as: CN219421018U; CN117729482A; CN117750281A; CN117729484A; CN117729483A; CN117714946A; CN117729480A; CN117729481A; CN117714947A; CN219421017U

Abstract

The invention discloses a sound generating device and terminal equipment, wherein the sound generating device comprises a shell, a sound generating component and a vibration component, the shell is provided with a containing cavity, a sound outlet and a mounting port, the sound outlet and the mounting port are communicated with the containing cavity, the sound generating component is arranged in the containing cavity, the sound radiation side of a vibrating diaphragm of the sound generating component is communicated with the sound outlet, a penetrating cavity is arranged corresponding to the mounting port, the penetrating cavity penetrates through the sound generating component and the vibrating diaphragm, and the vibration component penetrates through the mounting port and the penetrating cavity. The invention aims to provide the sounding device integrating the sounding component and the vibration component, which not only meets the miniaturization requirement, but also effectively increases the installation space of the vibration component, enlarges the size of the vibration component and improves the performance, and simultaneously improves the acoustic performance and the audio performance of the sounding device.

Description

Sound production device and terminal equipment

Technical Field

The invention relates to the technical field of electroacoustic conversion, in particular to a sound generating device and terminal equipment using the sound generating device.

Background

The intelligent terminal equipment, especially mobile phone products, generally need to have the audio frequency experience and the vibration touch experience function, the audio frequency experience comes from the loudspeaker device, the touch vibration experience comes from the motor device, the loudspeaker device and the motor device are respectively and independently arranged in the process of improving user audio frequency and vibration touch experience in the related technology, so that the problems of large occupied space, unsatisfactory layout effect and the like in the intelligent terminal equipment are caused, and the user experience of the intelligent terminal is influenced.

Disclosure of Invention

The invention aims to provide a sound generating device and terminal equipment, and aims to provide a sound generating device integrating a sound generating component and a vibration component, which not only meets the miniaturization requirement, but also effectively increases the installation space of a motor, enlarges the size of the motor and improves the performance, and simultaneously improves the acoustic performance and the audio performance of the sound generating device, thereby improving the user experience.

To achieve the above object, the present invention provides a sound emitting device including:

the shell is provided with a containing cavity, and an acoustic outlet and a mounting port which are communicated with the containing cavity;

the sound generating assembly is arranged in the containing cavity, the sound radiation side of the vibrating diaphragm of the sound generating assembly is communicated with the sound outlet, a penetrating cavity is arranged on the sound generating assembly corresponding to the mounting opening, and the penetrating cavity penetrates through the sound generating assembly and the vibrating diaphragm; and

And the vibration assembly penetrates through the mounting opening and the penetrating cavity.

In an embodiment, a gap is formed between a side of the sound generating component, which is opposite to the vibrating diaphragm, and the housing, the vibration component, and a side of the sound generating component, which is opposite to the vibrating diaphragm, enclose to form a rear sound cavity.

In one embodiment, the sound emitting assembly includes:

the magnetic circuit system is arranged in the containing cavity, a first through hole is formed in the magnetic circuit system corresponding to the mounting opening, and a magnetic gap is formed in the magnetic circuit system and located outside the first through hole; and

the vibration system comprises a vibrating diaphragm and a voice coil, wherein the vibrating diaphragm is opposite to the magnetic circuit system, one end of the voice coil is connected with the vibrating diaphragm, the other end of the voice coil is suspended in the magnetic gap, the vibrating diaphragm is provided with a second through hole corresponding to the first through hole, the voice coil surrounds the second through hole, and the second through hole is communicated with the first through hole to form a through cavity.

In an embodiment, the sound generating device further includes a first supporting portion and a second supporting portion for supporting the diaphragm, the first supporting portion and the second supporting portion are located on opposite sides of the magnetic gap, and the first supporting portion is disposed adjacent to the first through hole;

one side of the vibrating diaphragm adjacent to the second through hole is connected with the first supporting part, and the periphery of the vibrating diaphragm is connected with the second supporting part.

In an embodiment, the first support portion and the second support portion are formed by protruding the magnetic circuit system.

In one embodiment, the magnetic circuit system includes:

the magnetic conduction yoke is arranged in the accommodating cavity, is opposite to the vibrating diaphragm and is spaced, and a first through hole is formed in the magnetic conduction yoke corresponding to the mounting port;

the central magnetic circuit part is arranged on one side of the magnetic conduction yoke facing the vibrating diaphragm, a second through hole is arranged on the central magnetic circuit part corresponding to the first through hole, and the first through hole is communicated with the second through hole to form the first through hole; and

And a side magnetic circuit part provided on a side of the magnetic yoke facing the diaphragm and outside the center magnetic circuit part, the side magnetic circuit part being spaced apart from the center magnetic circuit part to form the magnetic gap.

In one embodiment, the magnetic circuit system includes:

the magnetic conduction yoke comprises a bottom and a side part, wherein the bottom and the side part are arranged at an included angle, one end of the bottom is connected with the inner wall of the accommodating cavity and is opposite to the vibrating diaphragm, the bottom is provided with a first through hole corresponding to the mounting port, the side part is connected to the bottom and is arranged around the first through hole, the side part is enclosed to form a second through hole, and the first through hole and the second through hole form the first through hole; and

And a side magnetic circuit part provided at a side of the bottom portion facing the diaphragm, the side magnetic circuit part being spaced apart from the side portion to form the magnetic gap.

In an embodiment, the vibrating diaphragm includes an inner fixing portion, a first ring folding portion surrounding the inner fixing portion, a central portion surrounding the first ring folding portion, a second ring folding portion surrounding the central portion, and an outer fixing portion arranged outside the second ring folding portion, the second through hole is formed in the inner fixing portion, the inner fixing portion is connected with the first supporting portion, the outer fixing portion is connected with the second supporting portion, and the voice coil is connected with the central portion.

In one embodiment, the vibration system further comprises a reinforcing ring, the reinforcing ring being provided at the central portion;

the reinforcing ring is arranged between the voice coil and the central part; or, the reinforcing ring is arranged at one side of the central part, which is opposite to the voice coil.

In an embodiment, the sound generating device further includes a spacer, where the spacer is disposed in the cavity to divide a part of the cavity into a filling cavity, the filling cavity is used for filling sound-absorbing particles, and the spacer is provided with a through hole corresponding to the mounting hole; the vibration assembly sequentially penetrates through the mounting opening and the through opening and is fixed in the penetrating cavity.

In an embodiment, the sound generating assembly further comprises a spacer, the sound generating assembly is provided with a magnetic gap communicated with the magnetic circuit system of the sound generating assembly and a leakage hole of the containing cavity, sound absorbing particles are filled in the containing cavity, and the spacer covers the leakage hole to prevent the sound absorbing particles from entering the sound generating assembly.

In an embodiment, the magnetic circuit system comprises a magnetic yoke, a central magnetic circuit part and a side magnetic circuit part, wherein the central magnetic circuit part and the side magnetic circuit part are arranged on the outer side of the central magnetic circuit part and are spaced from the central magnetic circuit part to form the magnetic gap, the leakage hole penetrates through the magnetic yoke, and the separator is arranged on one side, away from the vibrating diaphragm, of the magnetic yoke.

In one embodiment, the housing comprises:

the sound generating assembly is arranged in the first shell; and

the second shell covers the opening and encloses the first shell to form the containing cavity, and the second shell is provided with the mounting opening;

wherein, the sound outlet is arranged on the first shell or the second shell.

In an embodiment, the housing is provided with a via hole corresponding to the through cavity, and the vibration component sequentially penetrates through the mounting opening, the through cavity and the via hole.

In an embodiment, the casing is further provided with a recessed step portion surrounding the via hole, and a glue containing space is formed between the step portion and the vibration component.

In an embodiment, the bottom of the step portion abuts against one end of the diaphragm adjacent to the through cavity.

The invention also provides a terminal device which comprises a device shell and the sounding device, wherein the sounding device is arranged in the device shell.

According to the sound generating device, the containing cavity, the sound outlet and the mounting port which are communicated with the containing cavity are arranged in the shell, the sound generating component is arranged in the containing cavity, and the sound radiation side of the vibrating diaphragm of the sound generating component is communicated with the sound outlet, so that the audio performance of the sound generating device is ensured; the sound production assembly is characterized in that the sound production assembly is provided with a sound production assembly, the sound production assembly is provided with a vibrating diaphragm, the sound production assembly is provided with a sound production assembly, the vibrating assembly is provided with a vibrating diaphragm, the vibrating assembly is provided with a sound production assembly, the sound production assembly is provided with a vibrating diaphragm, the vibrating assembly is provided with a sound production assembly, and the sound production assembly is provided with a sound production assembly.

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 structure of a sound generating device according to an embodiment of the present invention;

FIG. 2 is an exploded view of a sound emitting device according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a sound emitting device according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a vibration assembly of a sound emitting structure of a sound emitting device according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a sound emitting device according to another embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating a side-emitting structure of a sound generating apparatus according to an embodiment of the present invention;

FIG. 7 is an exploded view of a side-emitting structure of a sound device according to an embodiment of the present invention;

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

FIG. 9 is a schematic cross-sectional view of a vibration assembly of a side-firing structure of a sound emitting device according to an embodiment of the present invention;

FIG. 10 is a schematic cross-sectional view of a side-emitting structure of a sound generating apparatus according to another embodiment of the present invention;

FIG. 11 is a schematic diagram of a side-emitting structure of a sound generating device according to another embodiment of the present invention;

FIG. 12 is an exploded view of a side-firing structure of a sound generator according to yet another embodiment of the present invention;

FIG. 13 is a schematic cross-sectional view of a side-emitting structure of a sound generating apparatus according to another embodiment of the present invention;

FIG. 14 is a schematic cross-sectional view of a vibration assembly of a side-firing structure of a sound emitting device according to yet another embodiment of the present invention;

FIG. 15 is a schematic diagram of a sound generating assembly separated from a spacer according to an embodiment of the present invention;

FIG. 16 is a schematic view showing separation of a separator according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of a sound generating assembly according to an embodiment of the present invention;

FIG. 18 is an exploded view of a sound emitting assembly according to one embodiment of the present invention.

Reference numerals illustrate:

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.

The intelligent terminal equipment, especially mobile phone products, generally need to have the audio frequency and experience the function with the vibrotactile, the audio frequency is experienced and comes from speaker device, and the tactile vibration is experienced and comes from motor device, and in the in-process is experienced with the vibrotactile to improvement user audio frequency, speaker device and motor device are set up alone respectively generally, lead to occupation space big in the intelligent terminal equipment, overall arrangement effect nonideal scheduling problem to the user experience of intelligent terminal has been influenced.

In the related art, although the speaker device and the motor device are integrated in the integrated module, the module needs to be miniaturized as much as possible due to the application requirements of the whole machine. Based on the requirement of miniaturization of the appearance of the product, under the condition that the audio performance of the loudspeaker device basically meets the requirement, the size of the motor device is too small to meet the vibration function requirement of the whole intelligent terminal, so that the user experience of the intelligent terminal is affected.

Based on the above-mentioned problems, the present invention proposes a sound generating apparatus 100. It is to be understood that the sound generating apparatus 100 may be applied to a terminal device such as an electronic device, for example, a mobile phone, an IPAD, a portable mobile electronic product or a terminal device, which is not limited herein.

Referring to fig. 1 to 15 in combination, in the embodiment of the invention, the sound generating device 100 includes a housing 1, a sound generating component 2 and a vibration component 4, wherein the housing 1 is provided with a cavity 11, and a sound outlet and a mounting opening 131 communicating with the cavity 11, the sound generating component 2 is disposed in the cavity 11, a sound radiation side of a vibrating diaphragm 231 of the sound generating component 2 is communicated with the sound outlet, a penetrating cavity 21 is disposed corresponding to the mounting opening 131 of the sound generating component 2, the penetrating cavity 21 penetrates through the sound generating component 2 and the vibrating diaphragm 231, and the vibration component 4 penetrates through the mounting opening 131 and the penetrating cavity 21.

In the present embodiment, the housing 1 of the sound generating apparatus 100 is used for mounting, fixing and supporting the sound generating assembly 2, the vibration assembly 4, and the like, that is, the housing 1 provides a mounting base for the sound generating assembly 2, the vibration assembly 4, and the like. The housing 1 has a cavity 11 for easy installation and protection of the sound emitting assembly 2 and the vibration assembly 4. Alternatively, the structure of the housing 1 may be a mounting case, a box, or a case having the accommodating chamber 11.

It will be appreciated that, in order to facilitate the smooth transmission of sound generated by the sound generating assembly 2 from the cavity 11, the housing 1 is provided with a sound outlet communicating with the cavity 11. In the present embodiment, when the sound generating assembly 2 of the sound generating device 100 is disposed in the cavity 11 of the housing 1, the sound radiation side of the diaphragm 231 of the sound generating assembly 2 is communicated with the sound outlet. The sound outlet may be provided in a position on the housing 1 facing the diaphragm 231, or in a position on the housing 1 on the circumferential side of the sound emitting unit 2, or the like.

In an embodiment, as shown in fig. 1 to 5, the diaphragm 231 of the sound generating assembly 2 is disposed opposite to the sound outlet, so that the sound generating device 100 forms a positive sound structure. As shown in fig. 6 to 14, the sound outlet is located on the peripheral side of the housing 1 and is not disposed opposite to the diaphragm 231, and the sound generating apparatus 100 forms a side sound generating structure.

It will be appreciated that the housing 1 may be of unitary construction or may be of split construction. As shown in fig. 1 to 14, the housing 1 includes a first shell 12 and a second shell 13, that is, the housing 1 is provided in a split manner, and the two parts of the first shell 12 and the second shell 13 are connected to form an integral structure. Of course, in other embodiments, the housing 1 may be formed by integral molding, which is not limited herein.

In this embodiment, through setting up the installing port 131 on shell 1 to correspond the installing port 131 on sounding subassembly 2 and set up and run through chamber 21, make run through chamber 21 and run through sounding subassembly 2 completely, thereby utilize installing port 131 and run through chamber 21 and install fixed vibration subassembly 4, so can integrate vibration subassembly 4 on sounding device 100, make sounding device 100 take into account the audio frequency effect in, can realize that the function is experienced to the vibrotactile.

It should be noted that, the penetrating cavity 21 completely penetrates the sounding component 2, when the vibration component 4 is mounted at the mounting opening 131 and penetrates the cavity 21, the height of the vibration component 4 is effectively prolonged, that is, the length of the vibration component 4 along the height direction of the sounding component 2 in the Z-axis is effectively prolonged, so that the size of the vibration component 4 is increased, and the vibration performance of the vibration component 4 is effectively improved. It can be appreciated that by increasing the length of the vibration assembly 4 in the Z-axis height direction, the width dimension of the vibration assembly 4, that is, the dimension of the vibration assembly 4 parallel to the direction of the diaphragm 231, can be reduced under the condition of ensuring the vibration performance of the vibration assembly 4, so as to compensate the dimension of the magnetic circuit system 22 in the sound generating assembly 2, thereby effectively improving the acoustic performance and the audio performance of the sound generating assembly 2, and improving the user experience.

According to the sound generating device 100, the containing cavity 11, the sound outlet and the mounting port 131 which are communicated with the containing cavity 11 are arranged in the shell 1, the sound generating component 2 is arranged in the containing cavity 11, and the sound radiation side of the vibrating diaphragm 231 of the sound generating component 2 is communicated with the sound outlet, so that the audio performance of the sound generating device 100 is ensured; the cavity 21 is further arranged on the sounding component 2, so that the sounding component 2 and the vibrating diaphragm 231 are penetrated through the cavity 21, and the corresponding mounting opening 131 is arranged, so that the vibrating component 4 is penetrated through the mounting opening 131 and the penetrating cavity 21, and the mounting space of the vibrating component 4 is effectively enlarged by utilizing the mounting opening 131 and the penetrating cavity 21, so that the vibration performance of the vibrating component 4 is improved by adjusting the height size of the vibrating component 4, and the width size of the vibrating component 4 is reduced under the condition that the vibration performance of a motor is not lost, so that the size of the magnetic circuit system 22 of the sounding component 2 is compensated and increased, and the acoustic performance and the audio performance of the sounding device 100 can be effectively improved, so that the user experience is improved.

In an embodiment, a gap housing 1 is provided between the side of the sound generating component 2 facing away from the diaphragm 231 and the housing 1, and the vibration component 4 and the side of the sound generating component 2 facing away from the diaphragm 231 enclose a rear acoustic cavity 14. Further, sound absorbing particles may be filled in the rear acoustic chamber 14, which may effectively increase the virtual acoustic chamber and improve the acoustic performance of the acoustic device 100. Of course, in other embodiments, the side of the sound generating assembly 2 facing away from the diaphragm 231 may also be abutted against the housing 1, and the rear sound cavity is located at one side of the sound generating assembly 2 or around the periphery of the sound generating assembly 2, which is a conventional structure of the sound generating apparatus in the art, and will not be described in detail herein.

In an embodiment, the sounding assembly 2 includes a magnetic circuit 22 and a vibration system 23, the magnetic circuit 22 is disposed in the cavity 11, the magnetic circuit 22 is provided with a first through hole 221 corresponding to the mounting opening 131, the magnetic circuit 22 is further provided with a magnetic gap 222 located outside the first through hole 221, the vibration system 23 includes a diaphragm 231 and a voice coil 232, the diaphragm 231 is opposite to the magnetic circuit 22, one end of the voice coil 232 is connected with the diaphragm 231, the other end of the voice coil 232 is suspended in the magnetic gap 222, the diaphragm 231 is provided with a second through hole 2311 corresponding to the first through hole 221, the voice coil 232 is disposed around the second through hole 2311, and the second through hole 2311 is communicated with the first through hole 221 to form the through cavity 21.

In the present embodiment, as shown in fig. 2 to 5, 7 to 10, and 12 to 15, the magnetic circuit 22 and the vibration system 23 are disposed in the cavity 11 of the housing 1, and the vibration system 23 is opposite to the magnetic circuit 22. It can be appreciated that, by providing the first through hole 221 on the magnetic circuit system 22, the first through hole 221 completely penetrates the magnetic circuit system 22 and is provided corresponding to the mounting opening 131, and providing the second through hole 2311 on the diaphragm 231 of the vibration system 23, the first through hole 221 and the second through hole 2311 are opposite to communicate, so as to form the through cavity 21, so that when the vibration assembly 4 penetrates the mounting opening 131 and the through cavity 21, one end of the vibration assembly 4 is located at the mounting opening 131, and the other end of the vibration assembly 4 penetrates the first through hole 221 and the second through hole 2311.

It should be noted that, one end of the vibration assembly 4 passes through the second through hole 2311 of the diaphragm 231, so that the height of the vibration assembly 4 along the Z-axis direction of the sounding assembly 2 is effectively increased, thereby improving the vibration performance of the vibration assembly 4.

It will be appreciated that the housing 1 is used for mounting and fixing the magnetic circuit 22 and the vibration system 23, the magnetic circuit 22 is provided with a magnetic gap 222, the vibration system 23 includes a diaphragm 231 and a voice coil 232 connected with the housing 1 and the magnetic circuit 22, and one end of the voice coil 232 away from the diaphragm 231 is suspended in the magnetic gap 222, so that current can be introduced into a magnetic field generated in the magnetic gap 222 by the magnetic circuit 22 through the voice coil 232, and the current can be converted into mechanical energy, so that the voice coil 232 drives the diaphragm 231 to vibrate, and the mechanical energy can be converted into an acoustic signal.

In this embodiment, the diaphragm 231 of the vibration system 23 and the magnetic circuit 22 are opposite and spaced apart to form a vibration space, and the first through hole 221 is provided in the magnetic circuit 22, the diaphragm 231 is provided with the second through hole 2311, and the vibration assembly 4 is mounted in the mounting opening 131 and the through cavity 21, so that the sound generating assembly 2 and the vibration assembly 4 are integrally integrated on the housing 1. Alternatively, the through cavity 21 may be a through groove structure or a through cavity structure with both ends open.

In an embodiment, the sound generating apparatus 100 further includes a first supporting portion 2241 and a second supporting portion 2251 for supporting the diaphragm 231, the first supporting portion 2241 and the second supporting portion 2251 being located on opposite sides of the magnetic gap 222, the first supporting portion 2241 being disposed adjacent to the first through hole 221; one side of the diaphragm 231 adjacent to the second through hole 2311 is connected to the first support 2241, and the periphery of the diaphragm 231 is connected to the second support 2251.

In the present embodiment, by providing the first support portion 2241 and the second support portion 2251, the diaphragm 231 is supported and fixed by the first support portion 2241 and the second support portion 2251, and the diaphragm 231 is prevented from being affected by the vibration assembly 4. It is to be understood that the first support 2241 and the second support 2251 may be formed by the housing 1, or may be formed by additionally providing a bracket structure, or may be integrally formed with the magnetic circuit system 2.

Alternatively, the first support 2241 and the second support 2251 are formed by protruding the magnetic circuit system 22.

In an embodiment, a side of the magnetic circuit 22 facing the diaphragm 231 is convexly provided with a first supporting portion 2241 and a second supporting portion 2251, the first supporting portion 2241 and the second supporting portion 2251 are located on opposite sides of the magnetic gap 222, and the first supporting portion 2241 is disposed adjacent to the first through hole 221; one side of the diaphragm 231 adjacent to the second through hole 2311 is connected to the first support 2241, and the periphery of the diaphragm 231 is connected to the second support 2251.

In the present embodiment, as shown in fig. 2 to 5, 7 to 10, and 12 to 14, by providing the first support part 2241 and the second support part 2251 on the magnetic circuit system 22, the diaphragm 231 of the fixed vibration system 23 can be supported and mounted by the first support part 2241 and the second support part 2251 to secure a vibration space of the diaphragm 231. It can be appreciated that the side of the diaphragm 231 adjacent to the second through hole 2311 is connected to the first support 2241, and the periphery of the diaphragm 231 is connected to the second support 2251, so that the vibration effect of the diaphragm 231 is not affected and interference is not generated to the diaphragm 231 when the vibration assembly 4 is operated.

It is understood that the first support 2241 and the second support 2251 are disposed on opposite sides of the magnetic gap 222, respectively, and away from the magnetic gap 222 to ensure the vibration effect of the diaphragm 231. Of course, the periphery of the diaphragm 231 may be fixed to the housing 1. Alternatively, the peripheral edge of the diaphragm 231 is fixed to the second support part 2251 and is sandwiched between the second support part 2251 and the housing 1, so that the connection stability of the diaphragm 231 can be improved.

In an embodiment, as shown in fig. 2 to 5, 7 to 10, and 12 to 14, the diaphragm 231 includes an inner fixing portion 2312, a first collar portion 2313 disposed around the inner fixing portion 2312, a central portion 2314 disposed around the first collar portion 2313, a second collar portion 2315 disposed around the central portion 2314, and an outer fixing portion 2316 disposed outside the second collar portion 2315, the inner fixing portion 2312 is provided with a second through hole 2311, the inner fixing portion 2312 is connected to the first supporting portion 2241, the outer fixing portion 2316 is connected to the second supporting portion 2251, and the voice coil 232 is connected to the central portion 2314.

In this embodiment, the diaphragm 231 is configured as a double-folded ring structure, so as to effectively improve the vibration performance of the diaphragm 231 and improve the acoustic performance of the sounding assembly 2. Alternatively, the inner fixing portion 2312, the first ring portion 2313, the central portion 2314, the second ring portion 2315 and the outer fixing portion 2316 of the diaphragm 231 are integrally formed. The first collar portion 2313 is disposed around the inner fixing portion 2312 and between the inner fixing portion 2312 and the central portion 2314, and the second collar portion 2315 is disposed around the central portion 2314 and between the central portion 2314 and the outer fixing portion 2316.

It is understood that the first and second collar portions 2313 and 2315 may be upwardly or downwardly convex structures. The diaphragm 231 is fixedly connected to the second support part 2251 through the outer fixing part 2316, and the inner fixing part 2312 is fixedly supported on the first support part 2241 to improve connection stability and sealability of the diaphragm 231. Thus, the first support portion 2241 and the second support portion 2251 can be used to support the diaphragm 231, so as to provide an amplitude space for the first ring portion 2313 and the second ring portion 2315, thereby avoiding interference with the magnetic circuit system 22 when the diaphragm 231 vibrates, and affecting vibration performance.

In order to increase the effective vibration area of the diaphragm 231, the external fixing portion 2316 may be formed to extend downward or upward from the outer side of the folder ring portion and be fixed to the outer circumferential side of the second support portion 2251.

In one embodiment, the vibration system 23 further includes a reinforcing ring 233, and the reinforcing ring 233 is disposed at the central portion 2314. It will be appreciated that by providing the reinforcing ring 233 such that the reinforcing ring 233 is attached to the center portion 2314, the structural strength and compliance of the diaphragm 231 is enhanced. Optionally, a stiffening ring 233 is provided between the voice coil 232 and the central portion 2314. Of course, in other embodiments, the reinforcing ring 233 is disposed on a side of the central portion 2314 facing away from the voice coil 232, and the reinforcing ring 233 is disposed around the first collar portion 2313.

In an embodiment, the magnetic circuit 22 includes a magnetic yoke 223, a central magnetic circuit portion 224 and a side magnetic circuit portion 225, wherein the magnetic yoke 223 is disposed in the cavity 11 and is opposite to and spaced from the diaphragm 231, the magnetic yoke 223 is provided with a first through hole 2231 corresponding to the mounting opening 131, the central magnetic circuit portion 224 is disposed on a side of the magnetic yoke 223 facing the diaphragm 231, the central magnetic circuit portion 224 is provided with a second through hole 2242 corresponding to the first through hole 2231, the first through hole 2231 is communicated with the second through hole 2242 to form a first through hole 221, the side magnetic circuit portion 225 is disposed on a side of the magnetic yoke 223 facing the diaphragm 231 and is located outside the central magnetic circuit portion 224, and the side magnetic circuit portion 225 is spaced from the central magnetic circuit portion 224 to form a magnetic gap 222.

In the present embodiment, as shown in fig. 2 to 4, 7 to 9, and 12 to 15, the magnetic yoke 223 may be a magnetic plate or a magnetic basin stand, which is not limited herein. The magnetic yoke 223 serves to support and mount the fixed center magnetic circuit portion 224 and the side magnetic circuit portion 225. Optionally, the magnetically permeable yoke 223 is adhesively connected to the central magnetic circuit portion 224 and the side magnetic circuit portion 225.

Alternatively, the central magnetic circuit portion 224 includes a central magnet and a central washer that are stacked, the central magnet being disposed between the central washer and the bottom of the magnetically permeable yoke 223. Optionally, the central magnet is a permanent magnet, and the central washer is a magnetic conductive plate. The central magnet and the central washer have the same structural outline, and the central magnet and the central washer can be plate-shaped structures or annular structures, and are not limited herein. In the present embodiment, the first through hole 2231 penetrates the yoke 223 and is provided corresponding to the mounting port 131, and the second through hole 2242 penetrates the central magnetic circuit portion 224, that is, the second through hole 2242 penetrates the central magnet and the central washer of the central magnetic circuit portion 224 and communicates with the first through hole 2231 to form the first through hole 221.

It will be appreciated that the central magnet and central washer of the central magnetic circuit portion 224 may be of annular configuration with an inner ring of annular configuration defining the second through-hole 2242. Of course, the central magnetic circuit portion 224 may also include a plurality of central magnets and a plurality of central washer disposed around the first through hole 2231 and enclosing to form the second through hole 2242. In this embodiment, the first supporting portion 2241 is disposed on a side of the central washer facing away from the central magnet.

It should be noted that, in order to provide a vibration space for the first ring portion 2313 of the diaphragm 231, the first supporting portion 2241 is located at an end of the central washer away from the magnetic gap 222, that is, adjacent to the second through hole 2242. Optionally, the height of the first supporting portion 2241 is greater than or equal to the amplitude of the first collar portion 2313. Optionally, the central washer is in an L-shaped configuration.

In the present embodiment, the side magnetic path portion 225 includes side magnets and Bian Huasi which are stacked and arranged with the side magnets sandwiched between Bian Huasi and the magnetic yoke 223, and the side magnets and Bian Hua are located outside the center magnet and the center washer and are spaced apart to form the magnetic gap 222. Optionally, the side magnets are permanent magnets. Bian Huasi is a magnetically permeable plate.

It will be appreciated that the side magnets and Bian Huasi can alternatively be annular in configuration such that the side magnets and Bian Huasi are looped outside of the central magnetic circuit portion 224. Of course, in other embodiments, the side magnets and Bian Huasi each comprise a plurality of side magnets and a plurality of side washers in a one-to-one correspondence, and the plurality of side magnets and the plurality of side washers are spaced apart and disposed around the central magnetic circuit portion 224 to form the magnetic gap 222 at intervals, which is not limited herein. Optionally, the shape and configuration profile of the side magnets and Bian Huasi are identical.

In this embodiment, the second support 2251 is protruded on a side of the Bian Huasi facing away from the edge magnet. It should be noted that, in order to provide a vibration space for the second ring portion 2315 of the diaphragm 231, the second support portion 2251 is located at an end of Bian Huasi away from the magnetic gap 222, that is, disposed adjacent to the housing 1. Optionally, the height of the second support 2251 is greater than or equal to the amplitude of the first ring fold 2213. Alternatively, bian Huasi is an L-shaped arrangement.

Alternatively, the center magnetic circuit portion 224 and the side magnetic circuit portion 225 are symmetrically disposed about the magnetic gap 222 as an axis of symmetry, that is, the center magnet and the center washer of the center magnetic circuit portion 224 are symmetrically disposed with the side magnet and the side magnet Bian Huasi of the side magnetic circuit portion 225, which is not limited herein.

In another embodiment, the magnetic circuit 22 includes a magnetic yoke 223 and a side magnetic circuit portion 225, the magnetic yoke 223 includes a bottom portion 2232 and a side portion 2233 disposed at an included angle, one end of the bottom portion 2232 is connected with the inner wall of the cavity 11 and opposite to the diaphragm 231, the bottom portion 2232 is provided with a first through hole 2231 corresponding to the mounting opening 131, the side portion 2233 is connected to the bottom portion 2232 and disposed around the first through hole 2231, the side portion 2233 encloses to form a second through hole 2242, the first through hole 2231 and the second through hole 2242 form a first through hole 221, the side magnetic circuit portion 225 is disposed on one side of the bottom portion 2232 facing the diaphragm 231, and the side magnetic circuit portion 225 is spaced from the side portion 2233 to form the magnetic gap 222.

In the present embodiment, as shown in fig. 5 and 10, the magnetically permeable yoke 223 is used to support and mount the side magnetic path portion 225, and alternatively, the magnetically permeable yoke 223 is adhesively connected with the side magnetic path portion 225. Alternatively, the magnetic circuit 22 may be fixedly connected to the housing 1 by the side magnetic circuit portion 225.

It will be appreciated that the magnetically permeable yoke 223 may alternatively be a hollow T-iron structure. The bottom 2232 and the side 2233 of the magnetic yoke 223 are optionally vertically disposed, the bottom 2232 is provided with a first through hole 2231 corresponding to the mounting opening 131, the side 2233 is provided on a side of the bottom 2232 facing the diaphragm 231, and the side 2233 encloses a cylindrical second through hole 2242, and the first through hole 2231 and the second through hole 2242 are opposite to each other and are communicated to form the first through hole 221.

In the present embodiment, the end of the side portion 2233 away from the bottom portion 2232 is provided with a first supporting portion 2241. It will be appreciated that, in order to provide a vibrating space for the first ring portion 2213 of the diaphragm 231, an end of the side portion 2233 away from the bottom portion 2232 is bent toward the second through hole 2242 to form a supporting platform, and the first supporting portion 2241 is protruded from a side of the supporting platform adjacent to the second through hole 2242. The side magnetic path portion 225 is provided on a side of the bottom portion 2232 facing the diaphragm 231 and spaced apart from the side portion 2233 to form the magnetic gap 222.

It will be appreciated that the side magnetic circuit portion 225 includes side magnets and Bian Huasi arranged in a stacked arrangement, the side magnets being sandwiched between Bian Huasi and the magnetic yoke 223, the side magnets and Bian Huasi being located between the side 2233 and the inner wall of the housing 1, and the side magnets and Bian Huasi being spaced from the side 2233 to form the magnetic gap 222. Optionally, the side magnets are permanent magnets. Bian Huasi is a magnetically permeable plate.

Alternatively, the side magnets and Bian Huasi can be annular in configuration such that the side magnets and Bian Huasi are looped outside of the side 2233. Of course, in other embodiments, the side magnets Bian Huasi each comprise a plurality of side magnets and a plurality of side washers in a one-to-one correspondence, and the plurality of side magnets and the plurality of side washers are spaced apart and disposed around the side 2233 to form the magnetic gap 222 at intervals, which is not limited herein. Optionally, the shape and configuration profile of the side magnets and Bian Huasi are identical.

Of course, in other embodiments, the side magnets include a plurality of side magnets spaced apart and disposed around the central magnetic circuit portion 224, and Bian Huasi is in a ring configuration, without limitation.

In an embodiment, the housing 1 includes a first shell 12 and a second shell 13, one end of the first shell 12 is provided with an opening 122, the sounding component 2 is disposed in the first shell 12, the second shell 13 covers the opening 122 and encloses the first shell 12 to form a containing cavity 11, and the second shell 13 is provided with a mounting opening 131; wherein the sound outlet is arranged on the first shell 12 or the second shell 13.

In an embodiment, the sound outlet is disposed at a position where the first housing 12 faces the diaphragm 231. The first casing 12 is a cylindrical structure with two open ends, one end of which forms a sound outlet, and the other end of which forms an opening 122 for mounting the sound generating assembly 2; or, the first casing 12 is a U-shaped structure with one end being open 122 and one end being closed, at this time, the opening 122 of the first casing 12 is convenient for installing the sounding component 2, and is covered by the second casing 13, the sound outlet is formed in the closed end of the first casing 12, so that when the sounding component 2 is installed in the containing cavity 11, the vibrating diaphragm 231 of the sounding component 2 is opposite to the sound outlet, and a positive sounding structure is formed.

Alternatively, the second housing 13 may be a plate-like structure or a U-shaped structure having one end opened and one end closed, which is not limited herein.

In this embodiment, the installation opening 131 is formed in the housing 1, and the penetrating cavity 21 is formed in the sounding component 2, so that the vibration component 4 is conveniently positioned and installed by matching the installation opening 131 with the penetrating cavity 21. It can be appreciated that the second housing 13 of the housing 1 is provided with a mounting opening 131, and the mounting opening 131 is disposed corresponding to and communicating with the through cavity 21 of the sound generating assembly 2. Alternatively, the inner wall of the mounting opening 131 of the second housing 13 and the periphery of the vibration assembly 4 may be connected by welding or bonding.

Optionally, the housing 1 may be made of metal or carbon fiber. That is, the first housing 12 and the second housing 13 are made of metal or carbon fiber, and are not limited herein. Alternatively, the thickness of the housing 1 is 0.2mm to 0.3mm. It will be appreciated that by controlling the thickness of the housing 1 to be between 0.2mm and 0.3mm, the overall dimensions of the housing 1 are maximised to ensure the required volume of the acoustic cavity of the acoustic assembly 2.

In this embodiment, the second housing 13 may be a metal member, and the thickness of the second housing 13 is 0.2mm to 0.3mm. The first housing 12 may be selected to be a metal piece, and the thickness of the first housing 12 is 0.2mm to 0.3mm.

Optionally, the first casing 12 and the second casing 13 of the housing 1 are metal parts, and the first casing 12 and the second casing 13 are hermetically matched to define the accommodating cavity 11, that is, the first casing 12 and the second casing 13 are made of metal materials, so that the overall structure of the housing 1 is made of metal materials.

It should be noted that, the first casing 12 and the second casing 13 of the casing 1 may be made of thinner steel sheets, so that the casing 1 may be designed thinner, thereby greatly increasing the volume of the cavity in the casing 1, effectively increasing the volumes of the front acoustic cavity and the rear acoustic cavity 14 enclosed by the sound generating assembly 2 and the casing 1, and further improving the acoustic performance, particularly the low-frequency acoustic performance, of the sound generating device 100. Meanwhile, the sounding component 2 is fixed in the housing 1, so that heat dissipation can be realized through the housing 1 made of metal materials, and the heat dissipation performance of the sounding device 100 is improved.

In an embodiment, a limiting groove 132 is further formed on a side, facing away from the sounding component 2, of the second housing 13, the limiting groove 132 is disposed around the mounting opening 131, and the vibration component 4 is provided with a limiting table, and the limiting table is supported and limited in the limiting groove 132.

In the present embodiment, as shown in fig. 4, 6 and 14, the limiting groove 132 is provided, so that the limiting groove 132 is used to mount the limiting vibration assembly 4, that is, the vibration assembly 4 is supported in the limiting groove 132 through the limiting table. It will be appreciated that the stop block is sealingly connected to the stop groove 132.

In an embodiment, the end of the first housing 12 away from the opening 122 is bent and extended to form a supporting edge, the supporting edge is surrounded to form the sound outlet 121, and the periphery of the diaphragm 231 is supported on the supporting edge and is disposed opposite to the sound outlet 121. At this time, the sound outlet 121 is the sound outlet.

In the present embodiment, as shown in fig. 2 to 5, 7 to 10, and 12 to 14, the sounding assembly 2 is fixed by the support rib provided at the end of the first casing 12 remote from the opening 122. It will be appreciated that the support flange is integrally formed with the first housing 12. The periphery of the diaphragm 231 is supported on the support baffle edge and is arranged opposite to the sound outlet 121.

Alternatively, the periphery of the diaphragm 231 may be fixedly set up on the supporting edge by sealant or glue, so that the folded ring portion and the dome of the diaphragm 231 correspond to the sound outlet 121.

In an embodiment, as shown in fig. 2, 4, 6, 7 and 12, a first connecting portion is disposed at an end of the first housing 12 adjacent to the opening 122, a second connecting portion is disposed at the second housing 13, and the second connecting portion is aligned with the first connecting portion, one of the first connecting portion and the second connecting portion is a positioning protrusion, and the other is a positioning groove. It can be understood that the first housing 12 and the second housing 13 are mounted and fixed by providing the first connecting portion and the second connecting portion on the first housing 12 and the second housing 13, respectively, so that the second connecting portion is aligned and connected with the first connecting portion.

It is understood that the positioning protrusion and the groove wall of the corresponding positioning groove may be bonded or welded. Positioning projections and positioning grooves may be provided on both the first housing 12 and the second housing 13, each positioning projection extending into its corresponding positioning groove.

In this embodiment, the first connection portion and the second connection portion each include a plurality of connection portions, and positioning fit and clamping are achieved by using positioning protrusions and positioning grooves, so that positioning assembly of the first housing 12 and the second housing 13 is achieved.

In one embodiment, the vibration assembly 4 may be selected as a linear motor or a rotor motor. In this embodiment, the vibration assembly 4 includes a motor and a circuit board connected to the motor, one end of the motor passes through the mounting opening 131 and the through cavity 21, and a positioning slot is further provided on a side of the second housing 13 facing away from the sound generating assembly 2, and the circuit board is accommodated and limited in the positioning slot. Alternatively, the motor is a linear motor or a rotor motor.

In the present embodiment, the motor of the vibration assembly 4 can achieve a vibration touch effect, and the motor is connected with an external power source through a circuit board to achieve power supply to the motor. It will be appreciated that by providing the positioning groove on the second housing 13, a mounting and positioning space is provided for the circuit board by using the positioning groove.

In an embodiment, as shown in fig. 15 and 16, the sound generating device 100 further includes a spacer 3, where the spacer 3 is disposed in the cavity 11 to divide a portion of the cavity 11 into a filling cavity, the filling cavity is used for filling sound-absorbing particles, and a through hole 31 is provided in the spacer 3 corresponding to the mounting hole 131; the vibration module 4 sequentially passes through the mounting port 131 and the through port 31, and is fixed in the through cavity 21.

In an embodiment, the second housing 13 is further provided with a filling hole 133 communicating with the rear acoustic cavity 14, and the acoustic device 100 further includes a damping member 51, where the damping member 51 seals the filling hole 133.

It will be appreciated that the filling of sound absorbing particles into the rear sound chamber 14 is facilitated by the provision of the filling holes 133 as shown in fig. 2, 4, 6, 7 and 12. By providing the damping member 51, the filling hole 133 is blocked by the damping member 51, and leakage of sound absorbing particles is avoided. Alternatively, the damping member 51 may be made of PET.

In this embodiment, the sounding component 2 is disposed in the cavity 11, and the spacer 3 is disposed in the cavity 11, so that the spacer 3 separates the cavity 11 from the filling cavity, and the filling cavity is used for filling sound-absorbing particles, so that the virtual sound cavity can be effectively increased, and the acoustic performance of the sounding device 100 is improved.

It will be appreciated that the separator 3 may be an air-permeable mesh or a metal woven mesh, without limitation. By filling the sound absorbing particles in the filling cavity to form a virtual sound cavity, the effect of increasing the acoustic cavity is achieved, and after sound generated by the sound generating component 2 enters the filling cavity through the isolating piece 3, the sound absorbing particles increase the transmission path of the sound absorbing particles, so that the sound absorbing particles are used for reducing the resonant frequency of the sound generating device 100 and improving the audio performance of the sound generating device 100, and particularly, the sound absorbing particles have an improvement effect on the low-frequency acoustic performance of the sound generating device 100.

In this embodiment, the isolation member 3 is provided with a through hole 31 through which the vibration assembly 4 passes, that is, the inner wall of the through hole 31 is in sealing contact with or connected with the periphery of the vibration assembly 4, so that sound absorbing particles can be effectively prevented from entering the sounding assembly 2 through the through hole 31, and the sounding effect of the sounding assembly 2 is affected.

In an embodiment, as shown in fig. 15 and 16, the spacer 3 includes a metal ring 32 and a mesh 33 disposed on the metal ring 32, the metal ring 32 abuts against a side of the sound generating assembly 2 facing away from the sound outlet 121, the mesh 33 is disposed on a side of the metal ring 32 facing away from the sound generating assembly 2, and the through hole 31 penetrates through the metal ring 32.

In this embodiment, the spacer 3 is attached to a side of the sound generating assembly 2 facing away from the sound outlet 121. The volume of the filling cavity can be effectively increased, the sound absorbing particles are filled in the filling cavity to form a virtual sound cavity, the effect of increasing the sound cavity is achieved, sound generated by the sound generating assembly 2 enters the filling cavity through the isolating piece 3, and accordingly the sound absorbing particles increase the transmission path of the sound absorbing particles, the resonance frequency of the sound generating device 100 is reduced, the audio performance of the sound generating device 100 is improved, and particularly the low-frequency acoustic performance of the sound generating device 100 is improved.

Meanwhile, the isolation piece 3 is attached to the sounding component 2, so that the sounding component 2 can provide a certain supporting force for the isolation piece 3, deformation of a metal woven net formed by weaving metal wires in the assembly process is avoided, the problem of powder leakage is caused, and the size of the sounding device 100 in the vertical direction or the Z-axis direction is not increased.

It can be appreciated that the spacer 3 is arranged as the metal ring 32 and the mesh cloth 33, so that the mesh cloth 33 is supported and installed by the metal ring 32, thereby facilitating processing and installation on one hand and effectively avoiding powder leakage of the spacer 3 on the other hand. In this embodiment, the metal ring 32 of the spacer 3 is supported and connected to the side of the sounding assembly 2 facing away from the sound outlet 121, and the mesh 33 is disposed on the side of the metal ring 32 facing away from the sounding assembly 2.

In this embodiment, the metal ring 32 and the mesh cloth 33 are provided with the through holes 31 corresponding to the mounting holes 131, and the hole walls of the through holes 31 are in sealing contact with the motor peripheral wall of the vibration assembly 4, so as to avoid powder leakage from the inside of the through holes 31.

In one embodiment, as shown in fig. 16, the metal ring 32 is further provided with ventilation holes 34, and the mesh cloth 33 covers the ventilation holes 34. It can be appreciated that the ventilation holes 34 are arranged, so that the ventilation holes 34 are communicated with the vibration space of the sounding assembly 2, and the air pressure in the vibration space is effectively balanced.

In this embodiment, as shown in fig. 15 and 16, a leakage hole 2234 communicating with the vibration space is formed in the magnetic yoke 223 of the sound emitting assembly 2, and the ventilation hole 34 of the separator 3 is disposed opposite to the leakage hole 2234. It will be appreciated that the leakage aperture 2234 may be a notch or opening structure provided at a peripheral corner of the magnetic yoke 223, the leakage aperture 2234 being in communication with the magnetic gap 222.

Optionally, the ventilation holes 34 include a plurality of ventilation holes 34 spaced along the circumference of the metal ring 32, and the mesh 33 covers the plurality of ventilation holes 34.

In an embodiment, as shown in fig. 17 and 18, the sounding assembly 2 further includes a spacer 3, the sounding assembly 2 is provided with a leakage hole 2234 communicating with the magnetic gap 222 of the sounding assembly 2 and the cavity, the cavity is provided with sound absorbing particles, and the spacer 3 is provided on the sounding assembly 2 and covers the leakage hole 2234 to prevent the sound absorbing particles from entering the sounding assembly 2. The separator 3 may be a metal mesh or other mesh cloth with ventilation function.

In this embodiment, the spacer 3 is disposed on the sound generating assembly 2, and does not occupy the filling space of the cavity additionally, so that the space enclosed by the sound generating assembly 2, the vibration assembly 4 and the housing 1 is all used for filling sound-absorbing particles, and the filling volume of the sound-absorbing particles is maximized, so that the virtual sound cavity can be effectively increased, and the acoustic performance of the sound generating apparatus 100 is improved.

As one of the embodiments, the magnetic circuit system includes a magnetic yoke 223, a central magnetic circuit portion 224 and a side magnetic circuit portion 225 provided on the magnetic yoke 223, the side magnetic circuit portion 225 being provided on the outer side of the central magnetic circuit portion 224 and spaced apart from the central magnetic circuit portion 224 to form a magnetic gap 222, a leakage hole 2234 being provided through the magnetic yoke 223, and a separator 3 being provided on the side of the magnetic yoke 223 facing away from the diaphragm 231. Specifically, the leakage holes 2234 may be through hole structures provided at corners of the circumference of the magnetic yoke 223, the leakage holes 2234 being in communication with the magnetic gap 222, and the spacers 3 including a plurality of the leakage holes 2234, respectively. The yoke 223 may be further provided with a step portion for accommodating the spacer 3, the spacer 3 being provided at the step portion, and an outer surface of the spacer 3 not exceeding an outer surface of the yoke 223.

It will be appreciated that in other embodiments, the leakage hole 2234 may be a notch formed at the periphery of the magnetic yoke 223, and the spacer 3 is disposed on the side of the magnetic yoke 223 facing away from the diaphragm 231 and covers the notch.

In this embodiment, the leakage holes 2234 are formed on the circumferential side of the magnetic yoke 223, the separator 3 is formed on the magnetic yoke 223 and covers the leakage holes 2234, so that the separator 3 does not occupy the space of the cavity for filling the sound absorbing particles, that is, the space surrounded by the sound generating component 2, the vibration component 4 and the housing 1 can be completely filled with the sound absorbing particles, so that the filling volume of the sound absorbing particles is maximized, thereby effectively increasing the virtual sound cavity and improving the acoustic performance of the sound generating device 100.

In one embodiment, the sound generating device 100 further includes a flexible circuit board, and one end of the flexible circuit board extends into the cavity 11 and is electrically connected to the sound generating assembly 2.

In this embodiment, the flexible circuit board is provided, so that the sound generating component 2 is conducted with an external power supply by using the flexible circuit board, so as to realize normal sound generation of the sound generating component 2. It will be appreciated that by providing the inner pads on the flexible circuit board such that the inner pads are located within the cavity 11, the connection to the sounding assembly 2 is made using the inner pads.

It will be appreciated that when the housing 1 is a metal housing, the inner peripheral wall of the first housing 12 is provided with an insulating spacer at a position corresponding to the inner pad, so that the inner pad is effectively prevented from being connected to the housing 1 through the insulating spacer to cause leakage. Alternatively, the insulating spacer may be an insulating tape, a mylar film, or the like, without limitation.

In an embodiment, as shown in fig. 1, 2, 6 and 7, 11 and 12, the sound generating device 100 further includes a connecting member 52, where the connecting member 52 is disposed on an outer wall of the housing 1, and the connecting member 52 may be a metal member. It will be appreciated that by providing the connector 52, the sound generating apparatus 100 can be mounted and fixed to an electronic device or a terminal device by using the connector 52 on the one hand, and the flexible circuit board and the circuit board can be supported or mounted by using the connector 52 on the other hand. Optionally, the connector 52 is provided with mounting holes for mounting fixtures.

In one embodiment, as shown in fig. 6 to 14, the sound outlet is a side sound outlet 631 provided on the peripheral side of the housing 1; the first housing 12 includes a middle housing 123 and a front housing 6, the middle housing 123 has a side wall, one end of the middle housing 123 is provided with an opening 122, the other end of the middle housing is provided with a sound outlet 121, the front housing 6 is connected with one side of the middle housing 123 facing away from the mounting opening 131 and is opposite to the sound outlet 121, and the front housing 6 and one end of the middle housing 123 provided with the sound outlet 121 enclose to form a sound outlet channel 61 communicated with the sound outlet 121, the front housing 6 is provided with a side sound outlet 631 communicated with the sound outlet channel 61, and the side sound outlet 631 is located on the periphery of the middle housing 123.

It can be understood that the middle case 123 may be a cylindrical structure with two open ends, one end of which forms the sound hole 121 and the other end of which forms the opening 122 for mounting the sound generating assembly 2; alternatively, the middle casing 123 has a U-shaped structure with an opening 122 and a closed end, and at this time, the opening 122 of the middle casing 123 facilitates installation of the sounding assembly 2, and is covered by the second casing 13, and the closed end of the middle casing 123 is provided with the sound outlet 121. When the sounding component 2 is installed in the cavity 11, the diaphragm 231 of the sounding component 2 is opposite to the sound outlet 121, so that the sound waves of the diaphragm 231 radiate outwards through the sound outlet channel 61 and the side sound outlet 631. Optionally, the middle shell 123 is a metal piece, and the thickness of the middle shell 123 is 0.2mm to 0.3mm.

In this embodiment, the middle shell 123 and the front shell 6 may be connected into an integral structure by adopting a fixing manner such as bonding or welding, so as to improve the connection stability of the front shell 6 and the middle shell 123 and avoid the problems of sound leakage and the like. Of course, the middle shell 123 and the front shell 6 may also be fixed by a detachable connection structure, for example, a snap connection, a plug-in fit, a screw connection, or a pin connection.

According to the sound generating device 100, the mounting port 131 is formed in the second shell 13 of the shell 1, the penetrating cavity 21 is formed in the sound generating component 2, and the vibration component 4 is arranged in the penetrating cavity 21, so that the SPK single body and the motor are integrated into a whole, and the sound generating device 100 has the functions of audio experience and vibration touch experience; meanwhile, by providing the side sound outlet 631 in the housing 1, the side sound outlet 631 is located at the peripheral side of the sound generating apparatus 100, thereby meeting the demands of different terminal devices.

In an embodiment, the front shell 6 includes a chassis 62 and a sound outlet 63 connected to the chassis 62, the sound outlet 63 is provided with a side sound outlet 631, a support table 621 is provided on a side of the chassis 62 facing the housing 1, the support table 621 extends along a periphery of the chassis 62 and forms a concave groove communicating with the side sound outlet 631 by enclosing with the sound outlet 63, and the middle shell 123 is supported on the support table 621 and is connected with the sound outlet 63.

In this embodiment, as shown in fig. 7 to 14, by providing the front shell 6 as the chassis 62 and the sound emitting member 63, the sound emitting member 63 is protruded on the chassis 62, so that when the front shell 6 is connected with the middle shell 123, the middle shell 123 is supported on the chassis 62, and the side wall of the middle shell 123 is in limited abutment with the sound emitting member 63.

It will be appreciated that the chassis 62 of the front case 6 is connected to an end of the middle case 123 remote from the second case 13 to enclose the sound outlet channel 61, and a side sound outlet 631 is provided in the sound outlet 63, so that the sound wave radiated from the diaphragm 231 passes through the sound outlet 121, passes through the sound outlet channel 61 to the side sound outlet 631, and finally passes through the side sound outlet 631 to the outside.

In this embodiment, as shown in fig. 8 to 10, 13 and 14, a supporting table 621 is disposed on a side of the chassis 62 facing the housing 1, the supporting table 621 extends along the periphery of the chassis 62 and forms a recess groove with the sound outlet 63 to form a communication side sound outlet 631, so that the middle shell 123 can be conveniently supported on the supporting table 621, that is, the supporting block is connected with the supporting table 621 along a side facing away from the diaphragm 231, so that the sound outlet channel 61 is formed by using the space of the recess groove, so as to increase the front sound cavity volume of the sound generating device 100, thereby improving the acoustic performance of the sound generating device 100.

Alternatively, the front case 6 may be made of a metal material or a plastic material, which is not limited herein. In order to improve the structural stability of the front case 6, the chassis 62 and the sounding member 63 are integrally formed. In this embodiment, the support rib is glued or welded to the support table 621.

In an embodiment, the chassis 62 includes a support ring 622 and an insert 623 connected to the sound emitting member 63, an inner wall of the support ring 622 is provided with an embedded groove, a periphery of the insert 623 is embedded in the embedded groove, the support ring 622 protrudes out of one side of the insert 623 facing the middle shell 123 to form a support table 621, the insert 623 and the sound emitting member 63 enclose to form a concave groove, and the insert 623 is a metal sheet. In one embodiment, the support ring 622 and the sound outlet 63 are formed by a plastic ring integrally molded with the insert 623, the plastic ring forming the sound outlet 63 with side sound outlet 631 on one side of the sound emitting assembly 2, the remaining peripheral sides extending along the periphery of the chassis 62 to form the support ring 622.

In this embodiment, the support ring 622 and the sound emitting member 63 are plastic members, and the support ring 622 and the sound emitting member 63 are integrally injection molded with the insert 623. It will be appreciated that this arrangement provides both improved stability of the connection of the support ring 622 to the insert 623 and also ensures a connection seal, while at the same time providing for reduced costs.

In the present embodiment, as shown in fig. 8, 9, 10, 13 and 14, by providing the chassis 62 as the support ring 622 and the insert 623, and providing the insert groove on the inner wall of the support ring 622, the periphery of the insert 623 is embedded in the insert groove, thereby effectively improving the structural strength and sealing effect of the chassis 62. It will be appreciated that the support ring 622 protrudes beyond the side of the insert 623 facing the middle shell 123 to form a support table 621, so as to facilitate the connection with the first shell 12 of the casing 1 by means of the support ring 622, while ensuring the volume of the sound outlet channel 61. The insert 623 is a metal sheet, which can reduce the central thickness of the chassis 62, thereby effectively increasing the volume of the sound emitting channel 61 to improve the acoustic performance of the sound emitting device 100.

Optionally, the side of the insert 623 facing away from the diaphragm 231 is arranged flush with the side of the support ring 622 facing away from the support rim.

In an embodiment, the front shell 6 is a metal piece, so that the thickness of the front shell 6 is effectively reduced, and the volume of the sound emitting channel 61 is effectively increased, so as to improve the acoustic performance of the sound generating device 100.

Optionally, a notch is disposed on a side of the middle shell 123 corresponding to the sound emitting member 63, and the notch penetrates through the support edge and is communicated with the sound emitting hole 121. It can be appreciated that by the arrangement, the gap can be utilized to effectively improve the smoothness of the air flow.

In an embodiment, the casing 1 is provided with a through hole 624 corresponding to the through cavity 21, and the vibration assembly 4 sequentially penetrates through the mounting opening 131, the through cavity 21 and the through hole 624.

In this embodiment, as shown in fig. 6 to 10, the front case 6 is provided with a through hole 624 corresponding to the through cavity 21, and the vibration component 4 is sequentially disposed through the mounting opening 131, the through cavity 21, and the through hole 624. It will be appreciated that by providing the through holes 624 in the chassis 62 of the front housing 6 such that the through holes 624 extend through the chassis 62, i.e. through the inserts 623, the vibration assembly 4 is conveniently threaded through the mounting opening 131, through the cavity 21 and through holes 624 in that order. So can further increase the length of vibration subassembly 4 in Z high direction, under the circumstances of guaranteeing vibration subassembly 4 vibration performance, can further reduce the size of vibration subassembly 4 width direction, namely the size that vibration subassembly 4 is parallel to vibrating diaphragm 231 direction for compensate the size of magnetic circuit 22 in the sound production subassembly 2, thereby further promote the acoustics performance and the audio performance of sound production subassembly 2, thereby promote user experience and feel.

In an embodiment, as shown in fig. 8 to 10, the casing 1 is further provided with a recessed step portion surrounding the hole 624, and a glue containing space is formed between the step portion and the vibration component 4. It can be appreciated that the front case 6 is recessed around the hole 624 to form a step portion, and a glue containing space is formed between the step portion and the vibration assembly 4, and glue is filled in the glue containing space, so that the connection stability of the front case 6 and the vibration assembly 4 is improved.

Alternatively, as shown in fig. 8 to 10, the bottom of the stepped portion abuts against an end of the diaphragm 231 adjacent to the through cavity 21. It can be appreciated that the step portion corresponds to the inner fixing portion 2312 of the diaphragm 231 and is connected to the inner fixing portion 2312 in an abutting manner, so that the step portion and the first supporting portion 2241 can be used to cooperate to clamp the inner fixing portion 2312 of the diaphragm 231, so as to improve the connection stability of the diaphragm 231.

The invention also provides a terminal device, which comprises a device shell and the sounding device 100, wherein the sounding device 100 is arranged in the device shell. The specific structure of the sound generating apparatus 100 refers to the structure of the sound generating apparatus 100 in the foregoing embodiment, and since the terminal device adopts all the technical solutions in all the foregoing embodiments, at least the beneficial effects brought by the technical solutions in the foregoing embodiments 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 emitting device, the sound emitting device comprising:

2. The sound generating apparatus of claim 1, wherein a gap is formed between a side of the sound generating assembly facing away from the diaphragm and the housing, and a rear sound cavity is formed by enclosing the housing, the vibration assembly, and a side of the sound generating assembly facing away from the diaphragm.

3. The sound emitting apparatus of claim 1 or 2, wherein the sound emitting assembly comprises:

4. The sound emitting apparatus of claim 3 further comprising first and second supports for supporting the diaphragm, the first and second supports being located on opposite sides of the magnetic gap, the first support being disposed adjacent the first through-hole;

5. The sound generating apparatus of claim 4, wherein the first support portion and the second support portion are formed by the magnetic circuit system protruding.

6. A sound generating apparatus according to claim 3, wherein the magnetic circuit system comprises:

7. A sound generating apparatus according to claim 3, wherein the magnetic circuit system comprises:

8. The sound generating apparatus according to claim 4, wherein the diaphragm includes an inner fixing portion, a first ring-folded portion provided around the inner fixing portion, a central portion provided around the first ring-folded portion, a second ring-folded portion provided around the central portion, and an outer fixing portion provided outside the second ring-folded portion, the second through hole is provided in the inner fixing portion, the inner fixing portion is connected to the first supporting portion, the outer fixing portion is connected to the second supporting portion, and the voice coil is connected to the central portion.

9. The sound emitting apparatus of claim 8, wherein the vibration system further comprises a stiffening ring, the stiffening ring being disposed in the central portion;

10. The sound generating device according to claim 1 or 2, further comprising a spacer provided in the cavity to divide a part of the cavity into a filling cavity for filling sound absorbing particles, the spacer being provided with a through opening corresponding to the mounting opening; the vibration assembly sequentially penetrates through the mounting opening and the through opening and is fixed in the penetrating cavity.

11. The sound generating device according to claim 1 or 2, wherein the sound generating assembly further comprises a spacer, a magnetic gap communicating with a magnetic circuit of the sound generating assembly and a leakage hole of the cavity are formed in the sound generating assembly, sound absorbing particles are filled in the cavity, and the spacer covers the leakage hole to prevent the sound absorbing particles from entering the interior of the sound generating assembly.

12. The sound generating apparatus of claim 11, wherein the magnetic circuit comprises a magnetic yoke, a central magnetic circuit portion and a side magnetic circuit portion disposed on the magnetic yoke, the side magnetic circuit portion being disposed on the outside of the central magnetic circuit portion and spaced apart from the central magnetic circuit portion to form the magnetic gap, the leakage hole being disposed through the magnetic yoke, and the spacer being disposed on a side of the magnetic yoke facing away from the diaphragm.

13. The sound emitting apparatus of claim 1 or 2, wherein the housing comprises:

the sound generating assembly is arranged in the first shell; and

wherein, the sound outlet is arranged on the first shell or the second shell.

14. The sound generating apparatus according to claim 1 or 2, wherein the housing is provided with a via hole corresponding to the through cavity, and the vibration assembly is sequentially provided through the mounting opening, the through cavity and the via hole.

15. The sound emitting apparatus of claim 14, wherein the housing further comprises a recessed step around the via, the step and the vibration assembly forming a glue receiving space therebetween.

16. The sound generating apparatus of claim 15, wherein the bottom of the step abuts an end of the diaphragm adjacent the through cavity.

17. A terminal device, characterized in that the terminal device comprises a device housing and a sound emitting device according to any one of claims 1 to 16, which sound emitting device is provided in the device housing.