CN114501256B

CN114501256B - Sound producing device and electronic equipment

Info

Publication number: CN114501256B
Application number: CN202210290478.7A
Authority: CN
Inventors: 蔡晓东; 郎贤忠; 张琳琳
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2023-09-29
Anticipated expiration: 2042-03-23
Also published as: CN114501256A

Abstract

The invention discloses a sound generating device and electronic equipment, wherein the sound generating device comprises a shell, a coil, a vibrator assembly and a vibration system, wherein a vibrator main body of the vibrator assembly is suspended in an installation cavity of the shell, a first magnetic circuit system is arranged on the vibrator main body and is opposite to the coil, a second magnetic circuit system is arranged on one side of the vibrator main body, which is opposite to the first magnetic circuit system, and is opposite to the vibration system, a magnetic gap is arranged on the second magnetic circuit system, a vibrating diaphragm assembly of the vibration system is fixed on the shell, and a voice coil is inserted in the magnetic gap and drives the vibrating diaphragm assembly to vibrate; the coil drives the vibrator main body to drive the first magnetic circuit system and the second magnetic circuit system to vibrate simultaneously, the centroid and the centroid of the vibrator assembly are defined to coincide, the axis which is parallel to the vibration direction of the vibration system and passes through the centroid is defined as a rotating shaft, and the rotating angle of the vibrator assembly around the rotating shaft is 0-1.6 degrees. The sound generating device integrates the loudspeaker and the motor, so that the integration level of the sound generating device can be improved, and the occupied space of the sound generating device in electronic equipment is saved.

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

Electronic product equipment, especially mobile phone products, generally need to have both audio experience and vibrotactile experience functions, the audio experience comes from a loudspeaker device, the tactile vibration experience comes from a motor device, the loudspeaker device and the motor device are respectively and independently arranged in the process of improving user audio and vibrotactile experience in the related art, so that the problems of large occupied space, unsatisfactory layout effect and the like in intelligent terminal equipment are caused, and therefore the user experience of the intelligent terminal is influenced.

Disclosure of Invention

The invention mainly aims to provide a sound generating device and electronic equipment, and aims to provide the sound generating device which integrates a loudspeaker and a motor into a whole and improves the acoustic performance of the sound generating device.

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

a housing, the housing having a mounting cavity;

the coil is arranged in the mounting cavity;

the vibrator assembly comprises a vibrator main body, a first magnetic circuit system and a second magnetic circuit system, the vibrator main body is suspended in the mounting cavity, the first magnetic circuit system is arranged on the vibrator main body and is opposite to the coil, the second magnetic circuit system is arranged on one side, facing away from the first magnetic circuit system, of the vibrator main body, and a magnetic gap is formed in the second magnetic circuit system;

The vibration system is arranged in the mounting cavity and is positioned at one side of the vibrator assembly, which is opposite to the coil, and comprises a voice coil and a vibrating diaphragm assembly connected with the voice coil, wherein the vibrating diaphragm assembly is fixed on the shell, and the voice coil is inserted into the magnetic gap and drives the vibrating diaphragm assembly to vibrate;

the coil drives the vibrator main body to drive the first magnetic circuit system and the second magnetic circuit system to vibrate simultaneously, the centroid of the vibrator assembly is defined to coincide with the mass center, the axis which is parallel to the vibration direction of the vibration system and passes through the mass center is defined to be a rotation axis, and the rotation angle of the vibrator assembly around the rotation axis is 0-1.6 degrees.

In an embodiment, the vibrator body includes:

the balance weight seat is provided with a hollow cavity, the first magnetic circuit system is arranged in the hollow cavity and is matched with the balance weight seat to form a containing groove, part of the coil is contained in the containing groove, and the second magnetic circuit system is arranged on one side, opposite to the first magnetic circuit system, of the balance weight seat; and

and one end of the elastic piece is connected with the counterweight seat, and the other end of the elastic piece is connected with the cavity wall of the mounting cavity so that the counterweight seat is suspended in the mounting cavity.

In an embodiment, a fixed slot is arranged on one side of the counterweight seat, which is opposite to the coil, the hollow cavity penetrates through the bottom wall of the fixed slot, the vibrator assembly further comprises a magnetic conduction plate arranged in the fixed slot, and the first magnetic circuit system and the second magnetic circuit system are respectively fixed on the surfaces of two opposite sides of the magnetic conduction plate.

In an embodiment, a side of the magnetic conduction plate facing the second magnetic circuit system is flush with a side of the counterweight base facing the second magnetic circuit system.

In an embodiment, the elastic member includes two elastic pieces, the two elastic pieces are symmetrically disposed on two opposite sides of the counterweight base, one end of each elastic piece is connected with the counterweight base, and the other end of each elastic piece is connected with a cavity wall of the installation cavity.

In one embodiment, the shape of the elastic sheet is V-shaped, U-shaped, W-shaped or Y-shaped;

and/or one end of the elastic sheet, which is far away from the counterweight seat, is connected with the cavity wall of the mounting cavity through a connecting sheet.

In an embodiment, the second magnetic circuit includes a central magnetic circuit portion and a side magnetic circuit portion provided to the vibrator body, 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 magnetic gap.

In one embodiment, the vibrator body has a major axis side and a minor axis side, a gap between the major axis side of the vibrator body and a side wall of the mounting cavity is defined as d1, and a height difference between the center magnetic circuit portion and the side magnetic circuit portion is defined as h1, wherein h1 is equal to or less than d1.

In one embodiment, the side magnetic circuit part comprises two side magnetic circuit parts, the two side magnetic circuit parts are arranged on two sides of the long axis side of the central magnetic circuit part, and the extending direction of the magnetic gap formed by the two side magnetic circuit parts and the central magnetic circuit part is consistent with the extending direction of the long axis side;

and/or, the central magnetic circuit part comprises a central magnet and a central washer which are arranged on the vibrator main body, the central washer is arranged on one side of the central magnet, which is opposite to the vibrator main body, the side magnetic circuit part comprises a side magnet and a Bian Huasi which are arranged on the vibrator main body, the Bian Huasi is arranged on one side of the side magnet, which is opposite to the vibrator main body, and the magnetizing direction of the central magnet is opposite to the magnetizing direction of the side magnet.

In an embodiment, the vibration system further includes a centering support, one end of the centering support is connected to one end of the voice coil away from the diaphragm assembly, and the other end of the centering support is connected to the housing.

In an embodiment, the housing includes a middle frame disposed at an outer periphery of the diaphragm assembly, and the diaphragm assembly includes:

the vibrating diaphragm comprises a central part, a folded ring part arranged around the central part and a fixed part connected to the outer side of the folded ring part, and the periphery of the fixed part is connected with the inner wall of the middle frame; and

a reinforcing member provided in the central portion;

wherein the voice coil is connected with the central part or the reinforcing member.

In an embodiment, a limiting baffle is arranged on the inner wall of the shell in a protruding mode, the limiting baffle is opposite to the edge of the reinforcing piece, the limiting baffle surrounds to form a through opening, and the voice coil penetrates through the through opening to be suspended in the magnetic gap.

In an embodiment, a conductive metal sheet is further arranged in the shell, an inner bonding pad is arranged at one end of the conductive metal sheet, the inner bonding pad is exposed at one side of the limiting baffle plate, which is opposite to the ring folding part, and is connected with the centering support sheet in a welding mode, an outer bonding pad is arranged at the other end of the conductive metal sheet, and the outer bonding pad is exposed at the outer wall of the shell and is used for being connected with an external circuit.

In one embodiment, the diaphragm and the reinforcing member are integrally injection molded;

And/or, the vibrating diaphragm and the middle frame are integrally injection molded;

and/or, the reinforcing piece and the central part are integrally formed by hot press molding;

and/or, one of the fixing part and the inner wall of the middle frame is provided with a limiting boss, and the other one of the fixing part and the inner wall of the middle frame is provided with a limiting groove, and the limiting boss is limited in the limiting groove;

and/or, the middle frame is in sealing connection or welding connection with the shell;

and/or, one of the middle frame and the shell is provided with a limit groove, the other one of the middle frame and the shell is provided with a limit column, and the limit column is limited in the limit groove;

and/or, the sound generating device further comprises a front cover, and the front cover is arranged on one side of the vibrating diaphragm, which is opposite to the voice coil, and is connected with the middle frame.

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 generating device, the mounting cavity is arranged in the shell, so that the coil, the vibrator assembly and the vibration system are mounted, fixed and protected by the mounting cavity, the vibrator main body of the vibrator assembly is hung in the mounting cavity, the first magnetic circuit system is arranged on the vibrator main body and is opposite to the coil, the vibrator main body is driven to drive the first magnetic circuit system and the second magnetic circuit system to vibrate by interaction of the coil and the first magnetic circuit system, the motor vibration function is realized, the sound generating device has a vibration touch experience function, the second magnetic circuit system is arranged on one side of the vibrator main body, which is opposite to the first magnetic circuit system, the magnetic gap is arranged on the second magnetic circuit system, the vibrating diaphragm assembly of the vibration system is fixed on the shell, and the voice coil is inserted in the magnetic gap, so that the voice coil drives the assembly to vibrate, namely the vibration system and the second magnetic circuit system are matched to form the speaker module, the sound generating device has the audio experience function, namely the vibrator assembly with the motor vibration function and the speaker module are integrated into an integrated structure, the integrated degree of the sound generating device is effectively improved, and the occupied space of the sound generating device in electronic equipment is saved; meanwhile, the centroid and the mass center of the vibrator assembly are defined to coincide, and the axis which is parallel to the vibration direction of the vibration system and penetrates through the mass center is a rotation axis, so that the rotation angle of the vibrator assembly around the rotation axis is 0-1.6 degrees, and the voice coil is avoided, the vibrator assembly is enabled to effectively avoid collision of the second magnetic circuit system with the voice coil in the normal working vibration process, namely, the vibrator main body is driven by the coil to vibrate, the vibrator assembly and the vibration system of the sound generating device can work respectively and do not interfere with each other, the sound generating device has the functions of audio experience and vibration touch experience, and the experience of a user is improved. In addition, when the sound generating device is in a falling working condition, the rotation angle of the vibrator assembly around the rotating shaft is 0-1.6 degrees, so that the vibrator assembly and the voice coil can be effectively prevented from being collided, the voice coil can be prevented from being damaged when the sound generating device falls, and the use reliability of the sound generating device is 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 an exploded view of a sound generating apparatus according to an embodiment of the present invention;

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

FIG. 4 is an exploded view of a portion of a sound generating apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating a structure of a sound generating apparatus in a stationary state according to an embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating a structure of a sound generating device rotated to a limit angle according to an embodiment of the present invention;

FIG. 7 is a schematic view of a structure of a housing according to an embodiment of the invention;

fig. 8 is a schematic partial cross-sectional view of a diaphragm assembly according to an embodiment of the invention.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Sounding device	322	Magnetic block
1	Outer casing	33	Second magnetic circuit system
				11	Mounting cavity	331	Central magnetic circuit part
12	Limiting groove	3311	Center magnet
				13	Spacing fender platform	3312	Central washer
14	Crossing port	332	Side magnetic circuit part
				15	Conductive metal sheet	3321	Side magnet
151	Inner bonding pad	3322	Bian Huasi
				152	Outer bonding pad	333	Magnetic gap
16	Middle frame	34	Magnetic conductive plate
				161	Limiting groove	4	Vibration system
162	Spacing post	41	Vibrating diaphragm assembly
				2	Coil	412	Vibrating diaphragm
3	Vibrator assembly	4121	Central portion
				31	Vibrator body	4122	Folded ring part
311	Counterweight seat	4123	Fixing part
				3111	Hollow cavity	4124	Spacing boss
3112	Fixing groove	413	Reinforcement piece
				312	Elastic piece	42	Voice coil
3121	Spring plate	43	Centering support piece
				3122	Connecting sheet	5	Front cover
32	First magnetic circuit system	6	Circuit board
				321	Accommodating groove

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.

Electronic product equipment, especially mobile phone products, generally need to have both audio experience and vibrotactile experience functions, the audio experience comes from a loudspeaker device, the tactile vibration experience comes from a motor device, the loudspeaker device and the motor device are respectively and independently arranged in the process of improving user audio and vibrotactile experience in the related art, so that the problems of large occupied space, unsatisfactory layout effect and the like in intelligent terminal equipment are caused, and therefore the user experience of the intelligent terminal is influenced. In addition, some electronic products in the related art set the speaker device and the motor device as a whole, but the speaker device and the motor device cannot interfere with each other when working synchronously, that is, the motor device cannot avoid the voice coil of the speaker device, and when the electronic product falls, the motor device is caused to collide with the voice coil, so that the protection of the voice coil cannot be realized.

It can be appreciated that in some intelligent wearable devices, if the organic combination of the speaker and the vibration function of the vibration motor can be realized under the condition that the space size of the whole machine is limited, a large amount of space is saved for the space of the whole machine. Based on the above concepts and problems, the present application proposes a sound generating apparatus 100. The sound generating apparatus 100 may be applied to an electronic device, which may be a mobile phone, a wearable device, or the like, and is not limited herein.

The sound generating apparatus 100 of the present application functionally integrates both the speaker and the vibration motor, not just the topology of the two functional products, but rather a magnetic circuit assembly coupled together, so that the spatial dimension of the integrated product is much smaller than the simple added volume of the two. It can be appreciated that the sound generating device 100 of the present application couples the functions of the speaker sound generating device and the vibration motor together, so that the function of the speaker can be realized, the vibration function of the vibration motor can be realized, and the magnetic circuit assembly in the product structure is also a vibrator for realizing the vibration function of the vibration motor when the function of the speaker is realized.

Referring to fig. 1 to 6 in combination, in the embodiment of the application, the sound generating apparatus 100 includes a housing 1, a coil 2, a vibrator assembly 3 and a vibration system 4, wherein the housing 1 is provided with a mounting cavity 11, the coil 2 is disposed in the mounting cavity 11, the vibrator assembly 3 includes a vibrator main body 31, a first magnetic circuit system 32 and a second magnetic circuit system 33, the vibrator main body 31 is suspended in the mounting cavity 11, the first magnetic circuit system 32 is disposed in the vibrator main body 31 and is opposite to the coil 2, the second magnetic circuit system 33 is disposed on a side of the vibrator main body 31 facing away from the first magnetic circuit system 32, the second magnetic circuit system 33 is provided with a magnetic gap 333, the vibration system 4 is disposed in the mounting cavity 11 and is located on a side of the vibrator assembly 3 facing away from the coil 2, the vibration system 4 includes a voice coil 42 and a diaphragm assembly 41 connected with the voice coil 42, the diaphragm assembly 41 is fixed in the housing 1, the voice coil 42 is inserted in the magnetic gap 333 and drives the assembly 41 to vibrate; the coil 2 drives the vibrator main body 31 to drive the first magnetic circuit system 32 and the second magnetic circuit system 33 to vibrate simultaneously, the centroid of the vibrator assembly 3 is defined to coincide with the centroid, the axis which is parallel to the vibration direction of the vibration system 4 and passes through the centroid is defined as a rotation axis, and the rotation angle of the vibrator assembly 3 around the rotation axis is 0-1.6 degrees.

In this embodiment, the housing 1 of the sound generating device 100 is used for mounting, fixing and supporting the coil 2, the vibrator assembly 3, the vibration system 4, and other components, that is, the housing 1 provides a mounting base for the coil 2, the vibrator assembly 3, the vibration system 4, and other components. The housing 1 has a mounting cavity 11 for easy mounting and protection of the coil 2, vibrator assembly 3, and vibration system 4. Alternatively, the structure of the housing 1 may be a mounting case, a box, or a case having the mounting chamber 11.

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 3, the housing 1 includes a first shell and a second shell, that is, the housing 1 is provided in a split manner, and the two parts of the first shell and the second shell 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.

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

It can be appreciated that the first casing and the second casing 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 vibrator assembly 3 and the vibration system 4 in the mounting cavity 11, and further improving the acoustic performance of the sound generating device 100. Meanwhile, the vibrator assembly 3 and the vibration system 4 are 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 sound generating device 100 is improved.

In this embodiment, the vibrator assembly 3 includes a vibrator main body 31, a first magnetic circuit system 32 and a second magnetic circuit system 33, and the vibrator main body 31 is suspended in the installation cavity 11, and the first magnetic circuit system 32 is disposed on the vibrator main body 31 and is opposite to the coil 2, so that after a current is introduced into the coil 2, the coil 2 can drive the vibrator assembly 3 to vibrate in the installation cavity 11, so as to realize a motor vibration function, and thus the sound generating device 100 has a touch vibration experience function. It can be understood that, by setting the magnetic gap 333 on the vibrator assembly 3 and fixing the diaphragm assembly 41 of the vibration system 4 to the housing 1, the voice coil 42 is inserted into the magnetic gap 333, so that the vibration system 4 and the second magnetic circuit system 33 cooperate to form a speaker module, and the diaphragm assembly 41 is driven to vibrate by the voice coil 42, so as to realize sounding, and the sounding device 100 has the audio experience function.

It can be understood that the coil 2 cooperates with the vibrator main body 31 of the vibrator assembly 3 and the first magnetic circuit system 32 to form a vibration module, so as to realize a motor vibration function, and the vibration system 4 cooperates with the second magnetic circuit system 33 of the vibrator assembly 3 to form a speaker module, so that the sound generating device 100 integrates the vibration module and the speaker module into a whole, and the two topological structures of the two functional products of the haptic vibration experience function and the audio experience function are realized, and the magnetic circuit system (i.e. the second magnetic circuit system 33) of the speaker module is coupled to the vibrator main body 31 of the vibrator assembly 3, so that the volume of the integrated sound generating device 100 is effectively reduced, and the space size of the integrated sound generating device 100 is far smaller than the added volume of the simple vibration module and the speaker module. Meanwhile, when the function of the loudspeaker module is realized, the magnetic circuit system in the loudspeaker module is part of the vibration of the vibrator assembly 3, namely the coil 2 vibrator main body 31 drives the first magnetic circuit system 32 and the second magnetic circuit system 33 to vibrate simultaneously, so that the simultaneous action of the functions of the vibration module and the loudspeaker module can be realized.

In this embodiment, the vibrator assembly 3 has a centroid and a centroid, the centroid of the vibrator assembly 3 is the geometric center of the structural shape of the vibrator assembly 3, and the centroid of the vibrator assembly 3 is the center of mass of the vibrator assembly 3. The centroid and the centroid of the vibrator assembly 3 are defined to coincide, and an axis which is parallel to the vibration direction of the vibration system 4 and passes through the centroid is defined as a rotation axis, so that the rotation angle of the vibrator assembly 3 around the rotation axis in the vibration process is 0-1.6 degrees, and the rotation angle of the vibrator assembly 3 in the vibration process is limited to be smaller than or equal to 1.6 degrees, so that the vibrator assembly 3 is effectively prevented from colliding with the voice coil 42 in the vibration process, namely the voice coil 42 is avoided.

According to the sound production device 100, the installation cavity 11 is arranged in the shell 1, so that the coil 2, the vibrator assembly 3 and the vibration system 4 are installed, fixed and protected by the aid of the installation cavity 11, the vibrator main body 32 of the vibrator assembly 3 is suspended in the installation cavity 11, the first magnetic circuit system 32 is arranged on the vibrator main body 31 and is opposite to the coil 2, so that the vibrator main body 31 is driven by interaction of the coil and the first magnetic circuit system 32 to drive the first magnetic circuit system 32 and the second magnetic circuit system 33 to vibrate, a motor vibration function is realized, the sound production device 100 has a vibration touch experience function, the second magnetic circuit system 33 is arranged on one side, opposite to the first magnetic circuit system 32, of the vibrator main body 31, a magnetic gap 333 is arranged on the second magnetic circuit system 33, the vibrating diaphragm assembly 41 of the vibration system 4 is fixed on the shell 1, and the voice coil 42 is inserted in the magnetic gap 333, so that the vibrating diaphragm assembly 41 is driven to vibrate by the aid of the vibrating system 4 and the second magnetic circuit system 33 to form a loudspeaker module by matching, and accordingly the sound production device 100 has an audio experience function, the vibrating assembly 3 and the loudspeaker module with the motor function is integrated into an electronic device 100, and the electronic device occupies a space; meanwhile, the centroid and the mass center of the vibrator assembly 3 are defined to coincide, and the axis which is parallel to the vibration direction of the vibration system 4 and passes through the mass center is a rotation axis, so that the rotation angle of the vibrator assembly 3 around the rotation axis is 0-1.6 degrees, and the voice coil 42 is avoided, the vibrator assembly 3 is enabled to effectively avoid the collision of the second magnetic circuit system 33 with the voice coil 42 in the normal working vibration process, namely, the vibrator main body 31 is driven to vibrate by the coil 2, so that the vibrator assembly 3 and the vibration system 4 of the sound generating device 100 can work respectively and do not interfere with each other, the sound generating device 100 has the functions of audio experience and vibration touch experience, and the experience of a user is improved. In addition, when the sound generating device 100 is in a falling working condition, the rotation angle of the vibrator assembly 3 around the rotation shaft is 0-1.6 degrees, so that the vibrator assembly 3 and the voice coil 42 can be effectively prevented from being collided, the voice coil 42 can be prevented from being damaged when the sound generating device 100 falls, and the use reliability of the sound generating device 100 is improved.

In the present embodiment, the peripheral edge of the diaphragm assembly 41 of the vibration system 4 is connected to the housing 1 to achieve a fixed mounting of the vibration system 4. One end of the voice coil 42 is connected with the diaphragm assembly 41, and the other end of the voice coil 42 is suspended in the magnetic gap 333, so that after current is introduced into the voice coil 42, the voice coil 42 converts electric energy into mechanical vibration in the magnetic gap 333, so that the voice coil 42 drives the diaphragm assembly 41 to vibrate and sound, and the mechanical energy is converted into a sound signal. It can be understood that, in the vibration system 4, the voice coil 42 drives the diaphragm assembly 41 to vibrate along the vertical direction, and the coil 2 drives the vibrator main body 31 of the vibrator assembly 3 to drive the first magnetic circuit 32 and the second magnetic circuit 33 to vibrate along the horizontal direction, so that the vibration module and the speaker module in the sound generating apparatus 100 can work respectively and do not interfere with each other.

In an embodiment, the vibrator body 31 includes a weight seat 311 and an elastic member 312, wherein the weight seat 311 is provided with a hollow cavity 3111, the first magnetic circuit system 32 is disposed in the hollow cavity 3111 and cooperates with the weight seat 311 to form a receiving groove 321, a part of the coil 2 is received in the receiving groove 321, the second magnetic circuit system 33 is disposed on a side of the weight seat 311 facing away from the first magnetic circuit system 32, one end of the elastic member 312 is connected with the weight seat 311, and the other end of the elastic member 312 is connected with a wall of the installation cavity 11, so that the weight seat 311 is suspended in the installation cavity 11.

In this embodiment, as shown in fig. 2, 3, 5 and 6, the weight seat 311 is not only used for installing and fixing the first magnetic circuit system 32, but also used for supporting and fixing the second magnetic circuit system 33, that is, the first magnetic circuit system 32 and the second magnetic circuit system 33 are integrated into a unitary structure by using the weight seat 311. It can be appreciated that the elastic members 312 are respectively connected to opposite sides of the weight seat 311, so that the weight seat 311 is mounted and suspended in the mounting cavity 11 through the elastic members 312.

It can be appreciated that, by arranging the hollow cavity 3111 on the counterweight seat 311, the first magnetic circuit system 32 is conveniently installed and fixed by using the hollow cavity 3111, and the coil 2 and the first magnetic circuit system 32 are arranged opposite to each other, so that after current is introduced into the coil 2, the coil is positioned in a magnetic field formed by the first magnetic circuit system 32, and the first magnetic circuit system 32 is driven to drive the counterweight seat 311 and the second magnetic circuit system 33 to perform vibration movement. In this embodiment, the first magnetic circuit system 32 is disposed in the hollow cavity 3111 and cooperates with the counterweight seat 311 to form the accommodating groove 321, so that at least part of the coil 2 is accommodated in the accommodating groove 321, and when the coil 2 is avoided by using the accommodating groove 321, the counterweight seat 311 and the coil 2 are more compactly disposed, and space utilization is effectively improved.

In the present embodiment, the second magnetic circuit system 33 is disposed on a side of the counterweight seat 311 facing away from the coil 2 and opposite to and spaced from the vibration system 4, and the second magnetic circuit system 33 is provided with a magnetic gap 333, so that the second magnetic circuit system 33 and the vibration system 4 cooperate to form a speaker module structure to realize a sound generating function. Alternatively, the speaker module may be a sound-producing unit structure, which is not limited herein.

In this embodiment, the hollow cavity 3111 may be a groove structure, a through groove structure, a cavity structure, or the like provided in the weight seat 311, which is not limited herein. It can be appreciated that the first magnetic circuit system 32 is disposed in the hollow cavity 3111 and cooperates with the weight seat 311 to form the accommodating groove 321. It will be appreciated that the weight seat 311 also functions as a weight and load bearing, and that the resilient member 312 also serves to provide a directional force for the overall movement of the weight seat 311.

It can be appreciated that the weight seat 311 is suspended in the installation cavity 11 by using the elastic member 312, that is, one end of the elastic member 312 is connected with the weight seat 311, and the other end of the elastic member 312 is connected with the cavity wall of the installation cavity 11, so that when the coil 2 drives the weight seat 311 to drive the first magnetic circuit system 32 and the second magnetic circuit system 33 to vibrate synchronously, the elastic member 312 is used for providing a supporting installation foundation for the weight seat 311 and also providing an elastic buffer force, so as to avoid damaging other components of the sound generating device 100 due to excessive vibration force of the weight seat 311.

In this embodiment, the elastic member 312 may be a member having an elastic expansion function, such as a spring plate, a spring or other elastic members, which is not limited herein. The elastic member 312 is connected to the outer circumferential wall of the weight holder 311. The elastic member 312 may be a unitary structure or a plurality of separate structures, which are not limited herein.

In an embodiment, the side of the weight seat 311 facing away from the coil 2 is provided with a fixing slot 3112, the hollow cavity 3111 penetrates through the bottom wall of the fixing slot 3112, the vibrator assembly 3 further includes a magnetic plate 34 disposed in the fixing slot 3112, and the first magnetic circuit system 32 and the second magnetic circuit system 33 are respectively fixed on the surfaces of two opposite sides of the magnetic plate 34.

In this embodiment, as shown in fig. 2 to 4, by disposing the magnetic conductive plate 34 on the weight seat 311, the first magnetic circuit system 32 and the second magnetic circuit system 33 are respectively fixed on two opposite surfaces of the magnetic conductive plate 34, so that the second magnetic circuit system 33 is fixedly integrated on the weight seat 311 through the magnetic conductive plate 34, and the magnetic conductive and focusing effects on the second magnetic circuit system 33 are conveniently achieved by using the magnetic conductive plate 34; meanwhile, the first magnetic circuit system 32 can be more firmly arranged on the counterweight seat 311 through the magnetic conduction plate 34, and the magnetic conduction and magnetic concentration effects on the first magnetic circuit system 32 are realized through the magnetic conduction plate 34.

It can be understood that, taking the speaker module as an example, when the magnetic conductive plate 34 is provided, the BL value of the speaker module is 0.19Tm; when the magnetically permeable plate 34 is not provided, the BL value of the speaker module is 0.17Tm. Therefore, after the magnetic conductive plate 34 is disposed, the BL value of the speaker module can be improved by more than 10%, so as to effectively improve the acoustic performance of the sound generating apparatus 100. Taking the vibration module as an example, when the magnetic conductive plate 34 is provided, the BL value of the vibration module is 0.22Tm; when the magnetic conductive plate 34 is not provided, the BL value of the vibration module is 0.18Tm. Therefore, after the magnetic conductive plate 34 is disposed, the BL value of the vibration module can be improved by more than 20%, so as to effectively improve the acoustic performance of the sound generating apparatus 100. Meanwhile, the magnetic conduction plate 34 can effectively avoid the influence of mutual weakening of the magnetic fields between the first magnetic circuit system 32 and the second magnetic circuit system 33, so that the acoustic performance of the sound generating device 100 can be further improved.

In the present embodiment, as shown in fig. 2, the fixing groove 3112 is provided in the counterweight base 311, so that the fixing groove 3112 is used to fix and limit the magnetic conductive plate 34, thereby improving the mounting stability. It can be appreciated that the hollow cavity 3111 penetrates through the bottom wall of the fixed slot 3112, so that one side of the magnetic conduction plate 34 facing the bottom wall of the fixed slot 3112 is connected to the first magnetic circuit system 32, so that the installation stability of the first magnetic circuit system 32 and the counterweight seat 311 can be further improved, and at the same time, the magnetic conduction and magnetic focusing effects of the first magnetic circuit system 32 can be realized by using the magnetic conduction plate 34. Optionally, the area of the magnetic conductive plate 34 is larger than the area of the first magnetic circuit system 32.

In one embodiment, the thickness of the magnetic conductive plate 34 is defined as d, the height of the first magnetic circuit 32 is defined as H1, and the height of the second magnetic circuit 33 is defined as H2, wherein (h1+h2)/d <2.

In this embodiment, in order to reduce the mutual weakening influence of the first magnetic circuit 32 and the second magnetic circuit 33, by adjusting the thickness d of the magnetic conductive plate 34, when the ratio of the sum of the height H1 of the first magnetic circuit 32 and the height H2 of the second magnetic circuit 33 to the thickness d of the magnetic conductive plate 34 is smaller than 2, the BL value of the speaker module is reduced to 99.8%, and the first magnetic circuit 32 of the vibration module is reduced to 99.6%, so that the mutual weakening of the magnetism between the first magnetic circuit 32 and the second magnetic circuit 33 can be effectively avoided, thereby influencing the BL value of the sound generating apparatus 100.

In an embodiment, a side of the magnetic conductive plate 34 facing the second magnetic circuit system 33 is flush with a side of the counterweight base 311 facing the second magnetic circuit system 33. It can be appreciated that, by this arrangement, the second magnetic circuit system 33 can be conveniently connected to the magnetic conductive plate 34, and the portion of the second magnetic circuit system 33 beyond the magnetic conductive plate 34 is connected to the counterweight base 311, so as to improve the connection stability of the second magnetic circuit system 33. Optionally, the area of the second magnetic circuit system 33 is larger than the area of the magnetic conductive plate 34.

In an embodiment, the elastic member 312 includes two elastic pieces 3121, the two elastic pieces 3121 are symmetrically disposed on opposite sides of the weight seat 311, one end of each elastic piece 3121 is connected to the weight seat 311, and the other end of each elastic piece 3121 is connected to the wall of the installation cavity 11.

In the present embodiment, as shown in fig. 2, 5 and 6, by providing the elastic member 312 as the elastic piece 3121, on the one hand, the elastic piece 3121 can improve the installation stability of the weight seat 311, so as to ensure that the weight seat 311 is suspended in the installation cavity 11; on the other hand, the elastic sheet 3121 can also generate elastic buffering force and directional moving force for the vibration of the weight seat 311.

It can be appreciated that the two elastic sheets 3121 are symmetrically disposed on opposite sides of the weight seat 311. The connecting line direction of the two elastic sheets 3121 is the same as the arrangement direction of the plurality of magnetic blocks 322, that is, the moving direction of the coil 2 driving the first magnetic circuit system 32 to drive the counterweight seat 311 and the second magnetic circuit system 33 is the same as the connecting line direction of the two elastic sheets 3121. In the present embodiment, the coil 2 drives the first magnetic circuit 32 to drive the counterweight base 311 and the second magnetic circuit 33 to vibrate in the horizontal direction.

Optionally, the external shape of the elastic piece 3121 is V-shaped, U-shaped, W-shaped or Y-shaped. It is to be understood that the elastic sheet 3121 may be made of metal or plastic, which is not limited herein. Alternatively, the elastic sheet 3121 and the weight seat 311 are integrally formed, so that the structural strength and the connection stability can be improved.

In an embodiment, an end of the spring plate 3121 away from the weight seat 311 is connected to a cavity wall of the installation cavity 11 through the connection piece 3122. It can be appreciated that, as shown in fig. 2, 5 and 6, the connection piece 3122 is provided, so that the contact area between the elastic piece 3121 and the inner wall of the housing 1 is increased by the connection piece 3122, thereby improving connection stability.

In one embodiment, first magnetic circuit 32 includes a plurality of magnets 322. It is understood that the plurality of magnetic blocks 322 are disposed in the hollow cavity 3111 of the weight seat 311. The plurality of magnetic blocks 322 may be integrally connected by gluing, or may be integrally formed by providing a connecting member, which is not limited herein. Alternatively, the arrangement direction of the plurality of magnetic blocks 322 is the same as the vibration moving direction of the weight seat 311 of the vibrator assembly 3.

In an embodiment, the number of coils 2 may be one or more. Optionally, the number of coils 2 is N, and the number of magnetic blocks 322 is N+1, wherein N is greater than or equal to 1. It will be appreciated that the arrangement is such that the first magnetic circuit 32 can provide a sufficient magnetic field for the coil 2 to ensure that the coil 2 drives the weight seat 311 to drive the second magnetic circuit 33 to perform vibration movement.

In this embodiment, the magnetizing directions of two adjacent magnetic blocks 322 in the plurality of magnetic blocks 322 are opposite. It can be understood that when the number of coils 2 is plural, the arrangement direction of the plurality of magnetic blocks 322 is the same as the arrangement direction of the plurality of coils 2, so that the plurality of magnetic blocks 322 are opposite to the plurality of coils 2.

In one embodiment, the second magnetic circuit 33 includes a central magnetic circuit portion 331 and a side magnetic circuit portion 332 provided to the vibrator body 31, the side magnetic circuit portion 332 being provided outside the central magnetic circuit portion 331 and being spaced apart from the central magnetic circuit portion 331 to form a magnetic gap 333.

In the present embodiment, as shown in fig. 2 to 6, the center magnetic circuit portion 331 and the side magnetic circuit portion 332 of the second magnetic circuit system 33 supply a magnetic field to the voice coil 42 to form a driving force. It will be appreciated that side magnetic circuit portion 332 may be of unitary annular construction with central magnetic circuit portion 331 being an annular interior of side magnetic circuit portion 332 and spaced from side magnetic circuit portion 332 to form magnetic gap 333. Of course, in other embodiments, the side magnetic circuit portion 332 may be a plurality of split structural components, which are spaced around the central magnetic circuit portion 331, and are not limited herein.

It will be appreciated that the side magnetic path portion 332 includes two side magnetic path portions 332 provided on both sides of the long axis side of the center magnetic path portion 331, and that the extending direction of the magnetic gap 333 formed by the two side magnetic path portions 332 and the center magnetic path portion 331 coincides with the vibration moving direction of the vibrator assembly 3. It can be understood that the second magnetic circuit 33 has a major axis and a minor axis, and the two side magnetic circuit portions 332 are disposed on two major axis sides of the second magnetic circuit 33 and are disposed on opposite sides of the center magnetic circuit portion 331, that is, the extending direction of the magnetic gap 333 is the same as the major axis direction of the second magnetic circuit 33, and at this time, the extending direction of the magnetic gap 333 is consistent with the vibration moving direction of the weight seat 311 of the vibrator assembly 3.

In order to avoid collision between the second magnetic circuit system 33 and the voice coil 42 when the coil 2 drives the weight seat 311 to drive the first magnetic circuit system 32 and the second magnetic circuit system 33 to vibrate in the horizontal direction, the side magnetic circuit portion 332 of the second magnetic circuit system 33 is only disposed in the long axis direction, and the short axis direction is not disposed. In order to avoid collision of the voice coil 42 with the central magnetic circuit portion 331, the ring shape of the voice coil 42 extends in the long axis direction, that is, provides a space for avoiding the central magnetic circuit portion 331 with the movement of the weight seat 311.

In one embodiment, the vibrator body 31 has a major axis side and a minor axis side, defining a gap d1 between the major axis side of the vibrator body 31 and a side wall of the mounting cavity 11, and defining a distance d2 between the voice coil 42 and the side wall of the magnetic gap 333; wherein d1 is less than or equal to d2.

In this embodiment, as shown in fig. 3, 5 and 6, by defining the gap d1 between the vibrator assembly 3 and the cavity wall (e.g., the side cavity wall or the bottom cavity wall or the top cavity wall) of the mounting cavity 11 to be smaller than or equal to the distance d2 between the voice coil 42 and the side wall of the magnetic gap 333, collision with the voice coil 42 can be effectively avoided when the vibrator assembly 3 rotates around the rotation axis during vibration. It will be appreciated that the distance d2 between the voice coil 42 and the side wall of the magnetic gap 333 may be the distance between the voice coil 42 and the center magnetic circuit portion 331 or the distance between the voice coil 42 and the side magnetic circuit portion 332.

Alternatively, the distance between the voice coil 42 and the center magnetic circuit portion 331 is the same as the distance between the voice coil 42 and the side magnetic circuit portion 332. When the distance between the voice coil 42 and the center magnetic circuit portion 331 and the distance between the voice coil 42 and the side magnetic circuit portion 332 are not the same, the gap d1 between the vibrator assembly 3 and the cavity wall (e.g., side cavity wall or bottom cavity wall or top cavity wall) of the mounting cavity 11 is smaller than or equal to the distance between the voice coil 42 and the center magnetic circuit portion 331 and the distance between the voice coil 42 and the side magnetic circuit portion 332.

In one embodiment, the vibrator body 31 has a major axis side and a minor axis side, a gap between the major axis side of the vibrator body 31 and the side wall of the mounting cavity 11 is defined as d1, and a height difference between the center magnetic path portion 331 and the side magnetic path portion 332 is defined as h1, wherein h 1. Ltoreq.d1.

In the present embodiment, as shown in fig. 3 and 4, by defining the gap d1 between the vibrator assembly 3 and the cavity wall (e.g., the side cavity wall or the bottom cavity wall or the top cavity wall) of the mounting cavity 11 to be greater than or equal to the height difference h1 between the center magnetic circuit portion 331 and the side magnetic circuit portion 332, collision with the voice coil 42 can be effectively avoided when the vibrator assembly 3 rotates about the rotation axis during vibration.

In one embodiment, the central magnetic circuit portion 331 includes a central magnet 3311 and a central washer 3312 disposed on the vibrator body 31, the central washer 3312 is disposed on a side of the central magnet 3311 facing away from the vibrator body 31, the side magnetic circuit portion 332 includes side magnets 3321 and Bian Huasi 3322 disposed on the vibrator body 31, and Bian Huasi 3322 is disposed on a side of the side magnet 3321 facing away from the vibrator body 31, and the magnetizing direction of the central magnet 3311 is opposite to that of the side magnet 3321.

In this embodiment, as shown in fig. 2 to 6, the center magnet 3311 of the center magnetic circuit portion 331 and the side magnet 3321 of the side magnetic circuit portion 332 are fixed on the weight seat 311 of the vibrator assembly 3, and form a magnetic gap 333 at intervals, and the center washer 3312 and the center washer Bian Huasi 3322 are respectively stacked on the center magnet 3311 and the side magnet 3321 and are disposed opposite to each other, so that the voice coil 42 generates a high driving force in the magnetic gap 333 to drive the diaphragm assembly 41 of the vibration system 4 to move.

In the present embodiment, the ratio of the sum of the height of the side magnetic circuit portion 332 of the second magnetic circuit system 33 and the height H1 of the first magnetic circuit system 33 to the thickness d of the magnetic conductive plate 34 is less than 2. Optionally, the ratio of the sum of the height of the side magnet 3321 of the side magnetic circuit portion 332 and the height H1 of the first magnetic circuit system 32 to the thickness d of the magnetic conductive plate 34 is less than 2.

It can be understood that the short axis area of the voice coil 42 is far from the magnetic field due to avoiding the vibration of the central magnetic circuit portion 331 coupled to the weight seat 311 in the long axis direction, and the short axis area of the voice coil 42 far from the magnetic field is less than 15%, so that the Bl loss is controlled within 15%. The washer may be added to the bottom of the center magnet 3311 and the side magnet 3321 to raise BL. The long axis of the voice coil 42 is close to the center magnet 3311 as much as possible, thereby improving the magnetic circuit utilization.

In an embodiment, the vibration system 4 further includes a centering support 43, one end of the centering support 43 is connected to an end of the voice coil 42 away from the diaphragm assembly 41, and the other end of the centering support 43 is connected to the housing 1.

In this embodiment, as shown in fig. 2, by providing the centering support 43, on one hand, polarization and swing of the voice coil 42 are effectively avoided by using the centering support 43, and on the other hand, conduction between the voice coil 42 and an external circuit is realized by using the centering support 43.

It will be appreciated that the centering tabs 43 may be of unitary construction or may be of two or four split construction. In the present embodiment, the centering support pieces 43 include two, and the two centering support pieces 43 are provided in the short axis direction and are respectively connected to the short axis of the voice coil 42.

In an embodiment, the housing 1 includes a middle frame 16 disposed on the outer periphery of the diaphragm assembly 41, the diaphragm assembly 41 includes a diaphragm 412 and a reinforcing member 413, wherein the diaphragm 412 includes a central portion 4121, a ring portion 4122 disposed around the central portion 4121, and a fixing portion 4123 connected to the outer side of the ring portion 4122, the periphery of the fixing portion 4123 is connected to the inner wall of the middle frame 16, and the reinforcing member 413 is disposed on the central portion 4121; the voice coil 42 is connected to the center portion 4121 or the reinforcing member 413.

In the present embodiment, as shown in fig. 1 to 3 and 8, by providing the middle frame 16 on the outer periphery of the diaphragm assembly 41, on the one hand, the diaphragm assembly 41 is mounted and fixed by the middle frame 16, and on the other hand, the sealing connection between the middle frame 16 and the housing 1 is facilitated, and alternatively, the sealing connection or the welding connection between the middle frame 16 and the housing 1 is facilitated. Alternatively, the diaphragm 412 is integrally injection molded with the middle frame 16, so that the connection strength and sealing performance between the diaphragm assembly 41 and the middle frame 16 can be improved.

It can be appreciated that the structural strength of the central portion 4121 of the diaphragm 412 is reinforced by the reinforcing member 413 by providing the reinforcing member 413 at the central portion 4121 of the diaphragm 412. Alternatively, the diaphragm 412 is injection molded integrally with the stiffening member 413. In the present embodiment, the central portion 4121 of the diaphragm 412 may be a hollow structure or a flat plate structure, which is not limited herein.

Alternatively, the stiffening member 413 is integrally thermoformed with the central portion 4121. This may improve the reliability and durability of the diaphragm 412.

In this embodiment, the ring portion 4122 of the diaphragm 412 may be a U-shaped structure, and the ring portion 4122 of the diaphragm 412 has elastic restoring capability. On the basis of providing larger compliance, the device occupies a very small vibration radiation surface, and effectively increases the vibration sounding area. It can be appreciated that the ring portion 4122 of the diaphragm 412 is disposed vertically upward along the outer side of the ring portion 4122, so that the contact area between the ring portion 4122 and the inner wall of the middle frame 16 can be increased, the connection stability can be improved, and the effective sound-producing area can be increased.

Alternatively, the reinforcing member 413 may be provided on the upper surface or the lower surface of the central portion 4121. In this embodiment, the reinforcing member 413 is connected to the lower surface of the central portion 4121, and the voice coil 42 is connected to the reinforcing member 413.

In one embodiment, as shown in fig. 8, one of the ring portion 4122 and the inner wall of the middle frame 16 is provided with a limiting boss 4124, and the other is provided with a limiting groove 161, and the limiting boss 4124 is limited in the limiting groove 161.

In this embodiment, the limiting boss 4124 and the limiting groove 161 are respectively disposed on the ring portion 4122 and the middle frame 16, and the limiting boss 4124 is limited in the limiting groove 161, so as to improve the connection stability and sealing effect of the ring portion 4122 and the middle frame 16. It can be appreciated that the ring portion 4122 is provided with a limiting boss 4124, and the inner wall of the middle frame 16 is provided with a limiting groove 161; alternatively, the ring portion 4122 is provided with a limit groove 161, and the inner wall of the middle frame 16 is provided with a limit boss 4124; alternatively, the ring portion 4122 is provided with a limiting groove 161 and a limiting boss 4124, and the inner wall of the middle frame 16 is provided with the limiting boss 4124 and the limiting groove 161, which are not limited herein.

In order to achieve the installation and positioning of the diaphragm assembly 41, in one embodiment, one of the middle frame 16 and the housing 1 is provided with a limiting groove 12, and the other one is provided with a limiting post 162, wherein the limiting post 162 is limited in the limiting groove 12.

It can be understood that, as shown in fig. 2 and 8, the middle frame 16 and the shell 1 are respectively provided with the limit posts 162 and the limit grooves 12, so that the limit posts 162 are used for limiting in the limit grooves 12, and the middle frame 16 is arranged on the shell 1 to realize positioning installation.

In an embodiment, as shown in fig. 1 to 3, the sound generating device 100 further includes a front cover 5, where the front cover 5 covers a side of the diaphragm 412 facing away from the voice coil 42 and is connected to the middle frame 16. It will be appreciated that the diaphragm 412 of the diaphragm assembly 41 is protected by the front cover 5 by providing the front cover 5.

In an embodiment, the inner wall of the housing 1 is convexly provided with a limiting baffle 13, the limiting baffle 13 is opposite to the edge position of the reinforcing member 413, that is, the projection parts of the limiting baffle 13 and the reinforcing member 413 along the vertical direction are overlapped, the limiting baffle 13 surrounds to form a through opening 14, and the voice coil 42 passes through the through opening 14 and is suspended in the magnetic gap 333.

In this embodiment, as shown in fig. 2 and 3, when the sound generating apparatus 100 is applied to wearing and setting, and a user is running or swimming, when the diaphragm 412 of the diaphragm assembly 41 is affected by water pressure, the limiting stop 13 is set, and when the amplitude of the reinforcing member 413 is too large, the limiting stop 13 can be used to limit the movement of the central portion 4121 of the diaphragm 412, so as to effectively avoid the problems of tearing the ring portion 4122 of the diaphragm 412. Meanwhile, the limiting baffle 13 also has a good waterproof effect, so that the waterproof level of the sound generating device 100 is more than 5 ATM.

Of course, the setting of the limiting baffle 13 is also beneficial to the rotation of the limiting counterweight seat 311 in the horizontal plane vibration process, so as to avoid the collision between the second magnetic circuit system 33 and the voice coil 42.

In an embodiment, a conductive metal sheet 15 is further disposed in the housing 1, one end of the conductive metal sheet 15 is provided with an inner bonding pad 151, the inner bonding pad 151 is exposed at one side of the limiting stop 13 facing away from the ring-folding portion 4122 and is welded to the centering support piece 43, the other end of the conductive metal sheet 15 is provided with an outer bonding pad 152, and the outer bonding pad 152 is exposed at the outer wall of the housing 1 for connection with an external circuit.

In this embodiment, as shown in fig. 1, 2 and 7, the conductive metal sheet 15 is disposed in the housing 1, one end of the conductive metal sheet 15 is provided with an inner bonding pad 151, the other end of the conductive metal sheet 15 is provided with an outer bonding pad 152, the inner bonding pad 151 is disposed on one side of the limiting stop 13 facing away from the ring-folding portion 4122, so that the conductive metal sheet can be conveniently welded to the centering support sheet 43, and the outer bonding pad 152 is disposed on the outer wall of the housing 1 and used for being connected to an external circuit, thereby conveniently guiding the external circuit to the voice coil 42 through the conductive metal sheet 15 and the centering support sheet 43. Optionally, the conductive metal sheet 15 and the housing 1 are integrally injection molded.

In one embodiment, as shown in fig. 1 and 2, the sound generating device 100 further includes a circuit board 6, and one end of the circuit board 6 extends into the mounting cavity 11 and is electrically connected to the coil 2. It will be appreciated that by providing the circuit board 6 such that one end of the circuit board 6 extends into the mounting cavity 11 and is electrically connected to the coil 2, an external circuit may be in conductive communication with the coil 2 using the circuit board 6. Optionally, the circuit board 6 is a flexible circuit board, so that one end of the circuit board 6 can be adhered to the bottom wall in the installation cavity 11 of the housing 1, and the other end of the circuit board 6 is bent and extended to the outer side of the housing 1, so that conduction is realized.

In the application, the vibration space of the vibrator assembly 3 in the mounting cavity 11 is limited, so that the voice coil 42 is prevented from being damaged by collision of the vibrator assembly 3, and the reliable operation of the loudspeaker function and the motor vibration function can be ensured. The sound generating device 100 mainly comprises a falling working condition, a working condition that a loudspeaker and a motor work simultaneously, and a main vibration direction of the vibrator assembly 3 is y-axis translation (namely, the vibrator assembly 3 translates along a long axis direction), and after reaching an action range, the shell 1 can limit further movement. Fig. 6 mainly shows that the vibrator assembly 3 is limited in rotation about the z-axis in the xy-plane. In addition, the translational motion of the vibrator assembly 3 in the x-axis, the rotational motion around the x-axis and the translational motion around the z-axis are limited by the elastic sheet 3121. To sum up, in order to ensure that the vibrator assembly 3 does not damage the voice coil 42 under the falling condition, and that the speaker function and the motor vibration function work simultaneously, the voice coil is not damaged.

It can be understood that the first magnetic circuit system 32 and the second magnetic circuit system 33 are coupled to the weight seat 311, so that the vibrator assembly 3 performs the vibrator function, and the important index of the motor is to meet the requirement of limiting the movable space of the vibrator assembly 3 in the case of falling or the like. The solution of the present application for realizing the restriction of the movable space is mainly realized by two rotatable angles and the elastic piece 3121. The gap d1 is formed between the vibrator assembly 3 and the inner wall of the housing 1 (the gap d1 may be a gap between the vibrator assembly 3 and the side wall of the housing 1, a gap between the vibrator assembly 3 and the bottom wall of the housing 1, and a gap between the vibrator assembly 3 and the limit stop 13), and in general design, the gap between the vibrator assembly 3 and the side wall of the housing 1, the gap between the vibrator assembly 3 and the bottom wall of the housing 1, and the gap between the vibrator assembly 3 and the limit stop 13 are equal (in practice, d1 is 0.15 mm). The range of motion of the vibrator assembly 3 is determined based on the above-described gap. When the major axis dimension, the minor axis dimension, and the height dimension of the vibrator assembly 3 satisfy certain conditions, the vibration of the vibrator assembly 3 can be prevented from damaging the voice coil 42. The gap between the voice coil 42 and the center magnet 3311 and the side magnets 3321 is d2. In order to avoid the center magnet 3311 and the center washer 3312 thereon from rubbing against the voice coil 42, in combination with the magnetic gap 333, the height difference h1 of the center washer 3312 at the highest position of no higher Yu Bianhua washer 3322 is less than or equal to d1 (e.g., 0.15 mm).

In the invention, the vibrator assembly 3 can be in a regular shape or an irregular shape, the centroid and the centroid of the vibrator assembly 3 are defined to coincide, and the rotation angle generated by the vibrator assembly 3 in the gap is a protection value, so that the rotation angle of the vibrator assembly 3 around a rotation shaft (z-axis) is 0-1.6 degrees, and the voice coil 42 is avoided.

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.

It is understood that the electronic device may be a mobile phone, a wearable device, etc., and is not limited herein. The device housing may be a housing of an electronic device, a housing of a wearable device, or the like, and is not limited 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:

a housing, the housing having a mounting cavity;

the coil is arranged in the mounting cavity;

2. The sound generating apparatus according to claim 1, wherein the vibrator body includes:

3. The sound generating device according to claim 2, wherein a fixing groove is formed in a side, facing away from the coil, of the counterweight base, the hollow cavity penetrates through a bottom wall of the fixing groove, the vibrator assembly further comprises a magnetic conduction plate arranged in the fixing groove, and the first magnetic circuit system and the second magnetic circuit system are respectively fixed on surfaces of two opposite sides of the magnetic conduction plate.

4. The sound generating apparatus according to claim 3, wherein a side of the magnetic conductive plate facing the second magnetic circuit is disposed flush with a side of the weight seat facing the second magnetic circuit.

5. The sound generating apparatus according to claim 2, wherein the elastic member comprises two elastic pieces, the two elastic pieces are symmetrically arranged on two opposite sides of the counterweight base, one end of each elastic piece is connected with the counterweight base, and the other end of each elastic piece is connected with the cavity wall of the installation cavity.

6. The sound generating apparatus according to claim 5, wherein the shape of the elastic sheet is V-shaped, U-shaped, W-shaped or Y-shaped;

7. The sound generating apparatus according to claim 1, wherein the second magnetic circuit system includes a center magnetic circuit portion provided to the vibrator body and a side magnetic circuit portion provided outside the center magnetic circuit portion and spaced apart from the center magnetic circuit portion to form the magnetic gap.

8. The sound emitting device of claim 7, wherein the vibrator body has a major axis side and a minor axis side, a gap between the major axis side of the vibrator body and a side wall of the mounting cavity is defined as d1, and a height difference between the center magnetic path portion and the side magnetic path portion is defined as h1, wherein h1 is equal to or less than d1.

9. The sound generating apparatus according to claim 7, wherein said side magnetic circuit portion includes two, two of said side magnetic circuit portions are provided on both sides of a long axis side of said center magnetic circuit portion, and an extension direction of said magnetic gap formed by said two side magnetic circuit portions and said center magnetic circuit portion coincides with a vibration moving direction of said vibrator assembly;

10. The sound emitting apparatus as claimed in any one of claims 1 to 9, wherein the vibration system further comprises a centering support, one end of the centering support being connected to an end of the voice coil remote from the diaphragm assembly, and the other end of the centering support being connected to the housing.

11. The sound generating apparatus of claim 10, wherein the housing comprises a center frame disposed about the periphery of the diaphragm assembly, the diaphragm assembly comprising:

a reinforcing member provided in the central portion;

12. The sound generating apparatus according to claim 11, wherein a limiting stop is provided on an inner wall of the housing, the limiting stop is opposite to an edge of the reinforcing member, the limiting stop surrounds a through opening, and the voice coil is suspended in the magnetic gap through the through opening.

13. The sound generating apparatus according to claim 12, wherein a conductive metal sheet is further disposed in the housing, an inner bonding pad is disposed at one end of the conductive metal sheet, the inner bonding pad is exposed at a side of the limiting stop facing away from the ring folding portion and is welded to the centering support sheet, an outer bonding pad is disposed at the other end of the conductive metal sheet, and the outer bonding pad is exposed at an outer wall of the housing and is used for being connected to an external circuit.

14. The sound emitting apparatus of claim 11 wherein the diaphragm is integrally injection molded with the stiffening member;

15. An electronic device comprising a device housing and a sound emitting apparatus according to any one of claims 1 to 14, wherein the sound emitting apparatus is provided in the device housing.