CN113225653B

CN113225653B - Sound producing device and electronic equipment

Info

Publication number: CN113225653B
Application number: CN202110492541.0A
Authority: CN
Inventors: 李政强
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2023-04-25
Anticipated expiration: 2041-04-30
Also published as: CN113225653A; WO2022227586A1

Abstract

The invention discloses a sound generating device and electronic equipment, the sound generating device comprises a first shell, a second shell and a sound generating unit, the first shell is provided with a containing groove and a sound generating channel, the bottom wall of the containing groove is convexly provided with a supporting rib, the supporting rib is enclosed to form a limit groove communicated with the sound generating channel, the second shell is covered on a notch of the containing groove, the sound generating unit comprises a vibrating system and a magnetic circuit system which are oppositely arranged, the vibrating system is covered on the notch of the limit groove and connected with the supporting rib, the vibrating system and the limit groove are enclosed to form a front sound cavity communicated with the sound generating channel, the vibrating system, the first shell and the second shell are enclosed to form a rear sound cavity, and the magnetic circuit system is arranged in the second shell and is positioned in the rear sound cavity. The invention aims to simplify the assembly of the sound generating device and increase the volume of a rear sound cavity of the sound generating device by improving the structure of the sound generating single body, thereby improving the acoustic performance of the sound generating device.

Description

Sound producing device and electronic equipment

Technical Field

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

Background

The sounding device is widely applied to portable mobile electronic products, such as mobile phones, and can convert audio signals into sound for playing, and the sounding device has high loudness and good low-frequency sound effect. With the increasing functions of electronic products, the space of the sound generating device is smaller and smaller.

In the related art, a sounding monomer is arranged in a shell of the sounding device, and after the sounding monomer is conducted through the FPCB, the vibrating diaphragm assembly of the sounding monomer is driven to vibrate and sound. The sounding monomer occupies the volume of the part of the rear sound cavity, so that the volume of the rear sound cavity is reduced, the acoustic performance of the sounding device is reduced, and the assembly production line of the sounding device is tedious, and the processing is complex and difficult.

Disclosure of Invention

The invention aims to provide a sound generating device and electronic equipment, which aim to simplify the assembly of the sound generating device and increase the volume of a rear sound cavity of the sound generating device by improving the structure of a sound generating single body, so that the acoustic performance of the sound generating device is improved.

In order to achieve the above object, the present invention provides a sound emitting device, including:

the first shell is provided with a containing groove and an acoustic channel, the bottom wall of the containing groove is convexly provided with a supporting rib, and the supporting rib is enclosed to form a limit groove communicated with the acoustic channel;

the second shell covers the notch of the accommodating groove; a kind of electronic device with high-pressure air-conditioning system

The sound production monomer, sound production monomer is including vibration system and the magnetic circuit that set up relatively, vibration system lid is located the notch of spacing groove, and with the supporting rib is connected, makes vibration system with the spacing groove encloses and closes the front sound cavity that forms the intercommunication sound passageway, vibration system first casing with the second casing encloses and closes and form back sound cavity, magnetic circuit locates the second casing, and is located back sound cavity.

In an embodiment, a limiting table is arranged on one side, facing the first shell, of the second shell, the limiting table is enclosed to form a mounting groove, and the magnetic circuit system is arranged in the mounting groove and is in limiting abutting connection with the limiting table.

In an embodiment, a supporting table is arranged on one side, facing the limiting groove, of the supporting rib, and the vibration system is connected with the supporting table.

In an embodiment, the magnetic circuit is provided with a magnetic gap, and the vibration system comprises:

the periphery of the vibrating diaphragm is connected with the supporting table, so that the vibrating diaphragm and the limiting groove are enclosed to form the front sound cavity, and the vibrating diaphragm, the first shell and the second shell are enclosed to form the rear sound cavity;

the support piece is arranged on one side of the vibrating diaphragm, which is opposite to the front acoustic cavity; a kind of electronic device with high-pressure air-conditioning system

And one end of the voice coil is connected with the supporting piece or the vibrating diaphragm, and the other end of the voice coil is suspended in the magnetic gap.

In an embodiment, the vibrating diaphragm comprises a dome, a ring-folded part arranged around the dome, and a fixing part arranged on the outer side of the ring-folded part, wherein the fixing part is connected with the supporting table and is in limiting abutting connection with the supporting rib;

the support piece comprises an outer fixing part and a vibrating part arranged on the inner side of the outer fixing part, the vibrating part is connected with the outer fixing part through a vibrating arm, the outer fixing part is connected with one side of the fixing part, which is opposite to the support table, the vibrating part corresponds to the dome, and the voice coil is connected with one side of the vibrating part, which is opposite to the dome.

In an embodiment, the support further includes a lead portion, the support rib is provided with a first notch, the first housing and/or the second housing is provided with a second notch, one end of the lead portion is connected with the external fixing portion, and the other end of the lead portion passes through the first notch and the second notch, extends out of the rear acoustic cavity, and is connected with one side of the second housing opposite to the first housing.

In an embodiment, the external fixing portion and the vibrating portion are all in rectangular ring arrangement, the vibrating arms comprise four vibrating arms, one end of each vibrating arm is connected with one rectangular edge of the external fixing portion, and the other end of each vibrating arm is connected with one rectangular corner of the vibrating portion;

and/or the support piece further comprises a bonding pad, wherein the bonding pad is arranged on one side of the vibrating part, which is opposite to the external fixing part, and a lead wire of the voice coil is connected with the bonding pad;

and/or the lead parts comprise two lead parts, and the two lead parts are connected with the external fixing part and are arranged at intervals in parallel.

In an embodiment, the first housing is further provided with a first guiding table, the first guiding table is located at one side of the supporting rib, which is opposite to the limiting groove, and is arranged corresponding to the first notch, and the first guiding table is provided with a first guiding surface, and the first guiding surface is opposite to the first notch and is abutted to the lead part so as to guide the lead part;

and/or, the first shell is further provided with a second guide table, the second guide table is arranged corresponding to the second notch, a second guide surface is arranged adjacent to the second notch, and the second guide surface is abutted to the lead part so as to guide the lead part.

In an embodiment, the first shell comprises a shell cover and a sound guide piece, the shell cover is provided with the accommodating groove and the sound outlet, the sound guide piece is provided with a sound guide cavity, the sound guide piece is arranged around the sound outlet so that the sound guide cavity is communicated with the sound outlet and surrounds the sound outlet to form the sound outlet channel, two ends of the supporting rib are respectively connected with two opposite sides of the sound guide piece, and the periphery of the vibration system is in limiting connection with the sound guide piece;

and/or, the extending direction of the sound emitting channel and the bottom wall of the accommodating groove form an included angle.

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

According to the sound production device, the supporting ribs are arranged on the bottom wall of the accommodating groove of the first shell, so that the supporting ribs are enclosed to form the limiting groove communicated with the sound production channel, the limiting groove is used for supporting and installing the vibration system of the sound production unit, the vibration system and the limiting groove are enclosed to form the front sound cavity communicated with the sound production channel, the vibration system, the first shell and the second shell are enclosed to form the rear sound cavity, the magnetic circuit system of the sound production unit is installed and fixed by the second shell, and therefore the vibration system of the sound production unit and the installation structures of the magnetic circuit system and the first shell and the second shell are changed, the traditional single injection molding shell structure is omitted, the size of the rear sound cavity of the sound production device is effectively increased, and the acoustic performance of the sound production device is effectively improved; meanwhile, the sounding monomer cancels the traditional single injection molding shell structure, so that the assembly of the whole sounding device is simpler, the cost is effectively reduced, and the product competitiveness 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 emitting 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 structural view of a first housing according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of the first housing 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	23	Mounting groove
1	First shell body	3	Sounding monomer
				1a	Accommodating groove	31	Vibration system
1b	Sound producing channel	311	Vibrating diaphragm
				11	Supporting rib	3111	Ball top
111	Limiting groove	3112	Folded ring part
				112	Supporting table	3113	Fixing part
113	First notch	312	Voice coil
				12	First guide table	313	Support member
121	A first guide surface	3131	External fixing part
				13	Second guide table	3132	Vibration part
131	Second guide surface	3133	Vibrating arm
				14	Shell cover	3134	Lead part
141	Sound outlet	3135	Bonding pad
				15	Sound guide	32	Magnetic circuit system
151	Sound conducting cavity	321	Magnetic gap
				152	First section	322	Magnetic conductive yoke
153	Second section	323	Central magnet
				154	Positioning table	324	Side magnet
2	Second shell	41	Anterior acoustic chamber
				21	Second notch	42	Rear acoustic cavity
22	Limiting table

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.

In the related art, a sounding monomer is arranged in a shell of the sounding device, and after the sounding monomer is conducted through the FPCB, the vibrating diaphragm assembly of the sounding monomer is driven to vibrate and sound. The whole sounding monomer occupies the volume of a part of the rear sound cavity, so that the volume of the rear sound cavity is reduced, the acoustic performance of the sounding device is reduced, and the assembly production line of the sounding device is long, and the processing is complex and difficult.

Based on the above concepts and problems, the present invention proposes a sound emitting device 100. It is understood that the sound emitting device 100 may be applied to electronic devices, such as mobile phones, IPAD, portable mobile electronic products, etc., and is not limited herein.

Referring to fig. 1 to 5, in the embodiment of the invention, the sound generating device 100 includes a first housing 1, a second housing 2 and a sound generating unit 3, wherein the first housing 1 is provided with a receiving groove 1a and a sound generating channel 1b, a bottom wall of the receiving groove 1a is convexly provided with a supporting rib 11, the supporting rib 11 encloses a limiting groove 111 communicating with the sound generating channel 1b, the second housing 2 covers a notch of the receiving groove 1a, the sound generating unit 3 includes a vibrating system 31 and a magnetic circuit system 32 which are oppositely arranged, the vibrating system 31 covers the notch of the limiting groove 111 and is connected with the supporting rib 11, so that the vibrating system 31 encloses a front sound cavity 41 communicating with the sound generating channel 1b with the limiting groove 111, the vibrating system 31, the first housing 1 and the second housing 2 enclose a rear sound cavity 42, and the magnetic circuit system 32 is arranged in the second housing 2 and is located in the rear sound cavity 42.

It can be understood that the first housing 1 and the second housing 2 form a housing structure of the sound generating device 100, and the housing structure is configured as a two-part structure of the first housing 1 and the second housing 2, so that the sound generating unit 3 is convenient to disassemble and assemble. It can be appreciated that the first housing 1 and the second housing 2 may be connected into an integral structure by a fixing manner such as welding, which may be beneficial to improving the structural strength and sealing performance of the housing of the sound generating device 100. Of course, the first casing 1 and the second casing 2 may be connected integrally by a detachable connection such as a snap connection, an insertion connection, a screw connection or a pin connection, so that the convenience of assembling and disassembling the sounding unit 3 may be improved.

In this embodiment, the first casing 1 is provided with a receiving groove 1a, and the second casing 2 covers the notch of the receiving groove 1a, so that the first casing 1 and the second casing 2 enclose to form a mounting space for mounting the sounding monomer 3. In order to facilitate the transmission of the sound generated by the sound generating unit 3 in the installation space to the outside, the first housing 1 is further provided with a sound generating channel 1b, so that the sound generated by the sound generating unit 3 can be transmitted to the outside through the sound generating channel 1 b.

As shown in fig. 2 to 5, the bottom wall of the accommodating groove 1a of the first housing 1 is convexly provided with a supporting rib 11, the supporting rib 11 encloses a limiting groove 111 forming a communicating sound emitting channel 1b, that is, the supporting rib 11 surrounds the sound emitting channel 1b, and the bottom wall of the accommodating groove 1a encloses a limiting groove 111 forming a communicating sound emitting channel 1b, so that the positioning and installation of the vibration system 31 of the sound emitting unit 3 can be conveniently realized by using the limiting groove 111 formed by the supporting rib 11, and the vibration system 31 covers the notch of the limiting groove 111 and is connected with the supporting rib 11. It can be understood that the bottom walls of the vibration system 31, the supporting ribs 11, and the limiting grooves 111 enclose a front acoustic cavity 41 that communicates with the acoustic output channel 1b, and the vibration system 31, the supporting ribs 11, the first housing 1, and the second housing 2 enclose a rear acoustic cavity 42.

It can be understood that the magnetic circuit system 32 is disposed on one side of the second housing 2 facing the first housing 1 and is disposed in the rear acoustic cavity 42, so that the magnetic circuit system 32 and the vibration system 31 are disposed opposite to each other to form a structure of the sounding unit 3, and after the sounding unit 3 is conducted through the FPCB, the vibration system 31 vibrates in a magnetic field formed by the magnetic circuit system 32 to generate sound, and the sound is transmitted to the outside through the front acoustic cavity 41 and the sounding channel 1 b.

According to the sound production device 100, the supporting ribs 11 are arranged on the bottom wall of the accommodating groove 1a of the first shell 1, so that the supporting ribs 11 are enclosed to form the limiting groove 111 communicated with the sound production channel 1b, the limiting groove 111 is used for supporting and installing the vibration system 31 of the sound production single body 3, the vibration system 31 is enclosed with the limiting groove 111 to form the front sound cavity 41 communicated with the sound production channel 1a, the vibration system 31, the first shell 1 and the second shell 2 are enclosed to form the rear sound cavity 42, the magnetic circuit system 32 for fixing the sound production single body 3 is installed by the second shell 2, and therefore the vibration system 31 and the magnetic circuit system 32 of the sound production single body 3 are changed, the traditional single body injection molding shell structure is omitted, the volume of the rear sound cavity 42 of the sound production device 100 is effectively increased, and the acoustic performance of the sound production device 100 is effectively improved; meanwhile, the sounding monomer 3 cancels the traditional single injection molding shell structure, so that the assembly of the whole sounding device 100 is simpler, the cost is effectively reduced, and the product competitiveness is improved.

In the present embodiment, the first housing 1 and the second housing 2 may be made of a metal material. It can be appreciated that the first casing 1 and the second casing 2 may be made of thinner steel sheets, so that the first casing 1 and the second casing 2 may be designed thinner, thereby greatly increasing the volume of the cavity in the casing structure of the sound generating device 100, effectively increasing the volume of the rear acoustic cavity 42 enclosed by the sound generating unit 3 and the first casing 1 and the second casing 2, and further improving the acoustic performance, especially the low-frequency acoustic performance, of the sound generating device 100.

Optionally, the supporting rib 11 is made of a metal material, and the supporting rib 11 is made of a thinner steel sheet through the vibration system 31 of the sounding monomer 3 supported by the supporting rib 11 made of the metal material, so that the volume of the rear acoustic cavity 42 occupied by the supporting rib 11 is effectively reduced, the volume of the rear acoustic cavity 42 is ensured, and the low-frequency acoustic performance is improved. Meanwhile, the vibration system 31 and the magnetic circuit system 32 of the sounding monomer 3 can also realize heat dissipation through the supporting ribs 11, the first shell 1 and the second shell 2 which are made of metal materials, so that the heat dissipation effect is improved.

In an embodiment, a limiting table 22 is disposed on a side of the second housing 2 facing the first housing 1, the limiting table 22 encloses to form a mounting groove 23, and the magnetic circuit system 32 is disposed in the mounting groove 23 and is in limiting abutment with the limiting table 22.

As shown in fig. 3, the limiting table 22 is arranged on one side, facing the first casing 1, of the second casing 2, so that the limiting table 22 encloses on the surface of the second casing 2 to form the mounting groove 23, and therefore positioning and mounting of the magnetic circuit system 32 by using the mounting groove 23 are facilitated.

As can be appreciated, as shown in fig. 2 and 3, the magnetic circuit 32 includes a magnetic yoke 322, a central magnet 323 and a side magnet 324, wherein the magnetic yoke 322 is disposed in the mounting groove 23 and is in spacing abutment with the spacing table 22, the central magnet 323 is disposed at a side of the magnetic yoke 322 facing away from the second housing 2, the side magnet 324 is disposed at a side of the magnetic yoke 322 facing away from the second housing 2 and is disposed around the central magnet 323, and a magnetic gap 321 is formed between the side magnet 324 and the central magnet 323.

In the present embodiment, the periphery of the magnetic yoke 322 of the magnetic circuit system 32 is in limited abutment with the limiting table 22. The center magnet 323 includes a center magnet and a center washer, the side magnet 324 includes side magnets and Bian Huasi, and the side magnet 324 is disposed around the center magnet 323 and spaced apart from the center magnet 323 such that a magnetic gap 321 is formed between the side magnet 324 and the center magnet 323. It will be appreciated that the side magnets 324 may alternatively be a ring-shaped magnetic structure or a plurality of side magnetic path segment structures, without limitation.

It will be appreciated that the center magnet of the center magnet 323 and the center washer may be selected to have a plate-like structure, and the configuration profiles of the center magnet and the center washer are similar, the side magnet of the side magnet 324 and the side magnet Bian Huasi may be selected to have a bar-like structure or a ring-like structure, and the configuration profiles of the side magnet and the side magnet Bian Huasi are similar.

In an embodiment, a supporting table 112 is disposed on a side of the supporting rib 11 facing the limiting groove 111, and the vibration system 31 is connected to the supporting table 112.

As shown in fig. 2 to 5, by disposing the supporting table 112 on the supporting rib 11, the supporting table 112 is spaced from the bottom wall of the limiting groove 111, so that the supporting table 112 can be conveniently connected with the vibration system 31 to support the vibration system 31, so that the vibration system 31 and the limiting groove 111 enclose to form the front acoustic cavity 41, and the vibration system 31, the first housing 1 and the second housing 2 enclose to form the rear acoustic cavity 42.

It can be appreciated that the supporting table 112 may be a ring table structure disposed around the inner wall of the supporting rib 11, where the vibration system 31 is connected to the supporting table 112, and the periphery of the vibration system 31 may be in limited abutment with the supporting rib 11. Of course, in other embodiments, the periphery of the vibration system 31 may be spaced apart from the support rib 11, which is not limited herein.

In another embodiment, the support table 112 includes a plurality of support tables 112, and the plurality of support tables 112 are disposed at intervals around the inner wall of the support rib 11, at this time, the vibration system 31 is connected to the support table 112, and the periphery of the vibration system 31 is in spacing abutment with the support rib 11, so that the vibration system can be made. The front acoustic cavity 41 formed by enclosing the vibration system 31 and the limit groove 111 is mutually sealed and isolated from the rear acoustic cavity 42 formed by enclosing the vibration system 31, the first shell 1 and the second shell 2.

In an embodiment, the magnetic circuit 32 is provided with a magnetic gap 321, the vibration system 31 includes a vibrating diaphragm 311, a supporting member 313 and a voice coil 312, wherein the periphery of the vibrating diaphragm 311 is connected with the supporting table 112, so that the vibrating diaphragm 311 encloses with the limiting groove 111 to form a front acoustic cavity 41, the vibrating diaphragm 311, the first housing 1 and the second housing 2 enclose to form a rear acoustic cavity 42, the supporting member 313 is disposed on one side of the vibrating diaphragm 311 facing away from the front acoustic cavity 41, one end of the voice coil 312 is connected with the supporting member 313 or the vibrating diaphragm 311, and the other end of the voice coil 312 is suspended in the magnetic gap 321.

In this embodiment, the support stand 112 is disposed on a side of the support rib 11 facing the limiting groove 111, so that the periphery of the diaphragm 311 is connected to the support stand 112 and is in limiting abutment with the support rib 11, so that the diaphragm 311 of the vibration system 31 is in limiting installation by using the support rib 11. It can be appreciated that, by providing the support 313, the support 313 is disposed between the diaphragm 311 and the voice coil 312, so that the vibration effect of the voice coil 312 is improved by using the support 313, and the voice coil 312 is prevented from swinging left and right during the vibration process, and the resonance phenomenon occurs. Optionally, the periphery of the supporting piece 313 is in limiting abutment with the supporting rib 11.

It can be understood that the voice coil 312 is located in the rear acoustic cavity 42 formed by enclosing the diaphragm 311, the first housing 1 and the second housing 2, and the voice coil 312 can be connected to a side of the supporting rib 11 facing away from the diaphragm 311, that is, the supporting member 313 is disposed between the diaphragm 311 and the voice coil 312. Of course, in other embodiments, the voice coil 312 may be opposite to the front acoustic cavity 41 of the diaphragm 311, and the supporting member 313 is connected to the periphery of the voice coil 312 adjacent to one end of the diaphragm 311, which is not limited herein. Optionally, the support 313 is a bracket

By conducting the voice coil 312 with an external circuit, the voice coil 312 moves up and down in the magnetic gap 321 of the magnetic circuit system 32, so as to drive the vibrating diaphragm 311 to vibrate and sound. In this embodiment, the vibrating diaphragm 311, the supporting member 313 and the voice coil 312 of the vibration system 31 are fixedly installed by using the cooperation of the supporting ribs 11 and the supporting table 112, so that the vibration system 31 of the sounding unit 3 is not fixedly installed in the injection molding shell structure in the conventional unit, that is, the injection molding shell structure in the conventional unit is eliminated, and the volume of the rear acoustic cavity 42 of the sounding device 100 is effectively increased.

In an embodiment, the diaphragm 311 includes a dome 3111, a ring-shaped portion 3112 surrounding the dome 3111, and a fixing portion 3113 disposed outside the ring-shaped portion 3112, wherein the fixing portion 3113 is connected to the support table 112 and is in limited abutment with the support rib 11; the support 313 includes an outer fixing portion 3131 and a vibrating portion 3132 provided inside the outer fixing portion 3131, the vibrating portion 3132 is connected to the outer fixing portion 3131 through a vibrating arm 3133, the outer fixing portion 3131 is connected to a side of the fixing portion 3113 facing away from the support table 112, the vibrating portion 3132 corresponds to the dome 3111, and the voice coil 312 is connected to a side of the vibrating portion 3132 facing away from the dome 3111.

As shown in fig. 2 and 3, the dome 3111, the ring 3112 and the fixing portion 3113 of the diaphragm 311 may be formed as an integral structure. It is understood that the ring 3112 of the diaphragm 311 may alternatively have an upwardly convex or downwardly concave structure. The dome 3111 of the diaphragm 311 may have a flat plate structure, and the dome 3111 is integrally connected to the hinge 3112. Of course, in other embodiments, the dome 3111 of the diaphragm 311 may also be configured as a hollow structure, and the diaphragm 311 further includes a reinforcing layer covering the hollow structure of the dome 3111, which is not limited herein.

In this embodiment, by providing the supporting member 313 as the external fixing portion 3131, the vibrating portion 3132 and the vibrating arm 3133, the vibrating portion 3132 is connected to the external fixing portion 3131 through the vibrating arm 3133, the supporting member 313 is connected to a side of the fixing portion 3113 of the diaphragm 311, which is opposite to the support table 112, through the external fixing portion 3131 and is in limited abutment with the supporting rib 11, so that positioning, mounting and fixing are achieved, the vibrating portion 3132 of the supporting member 313 corresponds to the dome 3111 of the diaphragm 311 and is connected to the voice coil 312, and thus when the voice coil 312 moves up and down in the magnetic gap 321, the vibrating portion 3132 of the supporting member 313 and the diaphragm 311 are driven to vibrate.

It can be appreciated that the vibrating portion 3132 is connected to the external fixing portion 3131 through the vibrating arm 3133, on the one hand, the elastic capability of the vibrating portion 3132 can be increased; on the other hand, the left-right oscillation of the voice coil 312 can be eliminated or generated by the vibrating arms 3133. Alternatively, the outer fixing portion 3131, the vibrating portion 3132, and the vibrating arm 3133 of the support 313 are integrally formed. In the present embodiment, the outer fixing portion 3131, the vibrating portion 3132, and the vibrating arm 3133 of the support 313 are located in the same plane.

Alternatively, the outer fixing portion 3131 and the vibrating portion 3132 are each provided in a rectangular ring, the vibrating arms 3133 include four vibrating arms 3133, one end of each vibrating arm 3133 is connected to one rectangular side of the outer fixing portion 3131, and the other end of each vibrating arm 3133 is connected to one rectangular corner of the vibrating portion 3132. It will be appreciated that such an arrangement may be advantageous to increase the vibration performance of the vibrating portion 3132.

In an embodiment, the supporting member 313 further includes a lead portion 3134, the supporting rib 11 is provided with a first notch 113, the first housing 1 and/or the second housing 2 is provided with a second notch 21, one end of the lead portion 3134 is connected to the external fixing portion 3131, and the other end of the lead portion 3134 passes through the first notch 113 and the second notch 21, protrudes out of the rear acoustic cavity 42, and is connected to a side of the second housing 2 facing away from the first housing 1.

In the present embodiment, by providing the lead portion 3134 on the support 313 such that one end of the lead portion 3134 is connected to the external fixing portion 3131, the other end of the lead portion 3134 passes through the first notch 113 and the second notch 21, protrudes out of the rear acoustic chamber 42, and is connected to the side of the second housing 2 facing away from the first housing 1, thereby facilitating connection conduction with an external circuit by the lead portion 3134.

As shown in fig. 2, alternatively, the lead portions 3134 include two, and the two lead portions 3134 are connected to the external fixing portion 3131 and are arranged at intervals in parallel. At this time, the supporting rib 11 is provided with two first notches 113, and the first casing 1 and/or the second casing 2 are provided with two second notches 21, so that the two lead portions 3134 conveniently penetrate through the two first notches 113 and the two second notches 21 respectively, extend out of the rear acoustic cavity 42, and are connected with one side of the second casing 2 facing away from the first casing 1.

It can be appreciated that the first notch 113 may be a groove, a recess, a through hole, or an opening formed at an end of the supporting rib 11 away from the bottom wall of the limiting groove 111. In this embodiment, the first notch 113 is flush with the supporting table 112, so that the connection between the lead portion 3134 and the external fixing portion 3131 is facilitated.

In an embodiment, the supporting member 313 further includes a pad 3135, the pad 3135 is disposed on a side of the vibration portion 3132 facing away from the external fixing portion 3131, and a lead wire of the voice coil 312 is connected to the pad 3135.

It will be appreciated that, as shown in fig. 2, by providing the bonding pad 3135 so as to connect with the lead wire of the voice coil 312 by using the bonding pad 3135, on the one hand, the voice coil 312 can be conducted with an external circuit by using the bonding pad 3135; on the other hand, the lead wiring arrangement of the voice coil 312 can be simplified, and the phenomena such as breakage of the lead of the voice coil 312 in the vibration process of the voice coil 312 can be avoided.

In the present embodiment, the support 313 may be alternatively made of FPCB. Of course, the supporting member 313 may also be internally provided with a conductive circuit, so that the pad 3135 is electrically connected to the lead portion 3134.

In an embodiment, as shown in fig. 2 and 4, the first housing 1 is further provided with a first guiding platform 12, the first guiding platform 12 is located on a side of the supporting rib 11 facing away from the limiting groove 111 and is disposed corresponding to the first notch 113, the first guiding platform 12 is provided with a first guiding surface 121, and the first guiding surface 121 is opposite to the first notch 113 and abuts against the lead portion 3134 to guide the lead portion 3134.

It will be appreciated that guiding and supporting the lead portion 3134 is achieved by providing the first guide table 12 such that the lead portion 3134 is abutted by the first guide surface 121 of the first guide table 12.

In an embodiment, as shown in fig. 2 and fig. 4, the first housing 1 is further provided with a second guiding platform 13, the second guiding platform 13 is disposed corresponding to the second notch 21, the second guiding platform 13 is provided with a second guiding surface 131 adjacent to the second notch 21, and the second guiding surface 131 abuts against the lead portion 3134 to guide the lead portion 3134.

It can be appreciated that the second guide table 13 is provided so as to abut against the lead portion 3134 through the second guide surface 131 of the second guide table 13, thereby achieving guiding and supporting of the lead portion 3134. Optionally, the second guide surface 131 is in the same plane as the first guide surface 121.

In an embodiment, the first casing 1 includes a casing 14 and a sound guiding member 15, the casing 14 is provided with a receiving groove 1a and a sound outlet 141, the sound guiding member 15 is provided with a sound guiding cavity 151, the sound guiding member 15 is disposed around the sound outlet 141, so that the sound guiding cavity 151 is communicated with the sound outlet 141 and encloses to form a sound outlet channel 1b, two ends of the supporting rib 11 are respectively connected with two opposite sides of the sound guiding member 15, and the periphery of the vibration system 31 is in limit connection with the sound guiding member 15, that is, the vibrating diaphragm 311 of the vibration system 31 is in limit connection with the sound guiding member 15.

As shown in fig. 3 to 5, the housing 14 of the first housing 1 is provided with a receiving groove 1a and an acoustic outlet 141, and the acoustic guide 15 is disposed around the acoustic outlet 141, so that the acoustic guide cavity 151 is communicated with the acoustic outlet 141 and encloses to form an acoustic outlet channel 1b, and at this time, two ends of the supporting rib 11 are respectively connected with two opposite sides of the acoustic guide 15, so as to enclose to form a limit groove 111 communicated with the acoustic outlet channel 1 b.

In this embodiment, the shell cover 14 of the first shell 1 is made of a metal material, and optionally made of a thinner steel sheet, at this time, the second shell 2 may be fixed with the shell cover 14 of the first shell 1 by adopting a metal welding manner, and the structure may be designed to be thinner compared with the whole plastic shell structure of the related art on the premise of ensuring the structural strength of the shell structure of the sound generating device 100, so that the cavity volume in the shell structure is greatly increased, the volume of the rear acoustic cavity 42 enclosed by the sound generating unit 3 and the first shell 1 and the second shell 2 is effectively increased, and the acoustic performance, particularly the low-frequency acoustic performance, of the sound generating device 100 is further improved.

It can be appreciated that by integrally arranging the sound guide 15 on the housing 14 of the first housing 1, not only is the connection stability and sealing performance of the sound guide 15 and the housing 14 improved, but also the sound guide 15 of the first housing 1 is conveniently utilized to realize the positioning function on the supporting rib 11. It will be appreciated that the sound guide 15 is located between the sound outlet 141 and the support rib 11, the sound outlet 141 extending through the housing 14 to communicate with the outside. Optionally, the housing cover 14 and the sound guide 15 are of an integrally formed construction.

In this embodiment, the support rib 11 is provided with a yielding opening corresponding to the sound guiding member 15, and the yielding opening penetrates through the support rib 11 and the support table 112 at the same time, so that one end of the sound guiding member 15 away from the shell 14 is connected with the inner wall of the yielding opening, that is, two ends of the support rib 11 are fixedly connected with the periphery or the outer wall of the sound guiding member 15, so as to improve the connection tightness. It will be appreciated that the front acoustic cavity 1b communicates with the acoustic outlet 141 through the acoustic guide cavity 1121 of the acoustic guide 15 to form a side acoustic structure of the acoustic device 100.

In an embodiment, as shown in fig. 3, the sound guiding member 15 includes a first section 152 spaced from the bottom wall of the accommodating groove 1a, and a second section 153 bent and extended from opposite ends of the first section 152 toward the bottom wall of the accommodating groove 1a, the first section 152, the two second sections 153 and the bottom wall of the accommodating groove 1a enclose to form a sound guiding cavity 151, two ends of the supporting rib 11 are respectively connected with the two second sections 153, one end of the first section 152 away from the sound outlet 141 is provided with a positioning table 154, the positioning table 154 is connected with the supporting table 112 and is arranged in a flush manner, and the periphery of the vibrating diaphragm 311 is connected with the positioning table 154 and is in spacing butt connection with the first section 152.

It will be appreciated that the two ends of the support rib 11 are integrally connected to the two second sections 153 of the sound guide 15, respectively. Through being equipped with location platform 154 in the one end that the sound outlet 141 was kept away from to first section 152 for location platform 154 links to each other with supporting bench 112 and is the setting of flushing, thereby further utilizes location platform 154 and supporting bench 112 to realize location installation and support to vibrating diaphragm 311, effectively seals and keeps apart preceding acoustic cavity 41 and back acoustic cavity 42 simultaneously.

Optionally, the housing cover 14, the sound guide 15 and the support rib 11 are integrally injection molded. Of course, in other embodiments, the supporting rib 11 is fixed and hermetically connected to the bottom wall of the accommodating groove 1a by gluing or laser welding.

In an embodiment, the extending direction of the sound emitting channel 1b is disposed at an angle with the bottom wall of the accommodating groove 1 a. As shown in fig. 3 and 5, the first section 152 of the sound guide 15 is disposed obliquely from one end of the housing 14 toward the bottom wall of the accommodating groove 1 a. So arranged, it is ensured that the end of the sound outlet channel 1b remote from the sound outlet 141 is located entirely within the front sound chamber 41.

According to the sound production device 100, the magnetic circuit system 32 of the sound production unit 3 is fixed on the second shell 2, and the vibration system 31 of the sound production unit 3 is fixed on the supporting rib 11 of the first shell 1, so that a traditional single injection molding shell structure is omitted, the rear sound cavity 42 of the sound production device 100 is effectively enlarged, and the space of the rear sound cavity 42 is increased by 15% -20% compared with that of a transmission structure. Meanwhile, the magnetic circuit system 32 and the vibration system 31 of the sounding single body 3 are respectively fixed on the second shell 2 and the first shell 1, so that the traditional single body manufacturing production line is canceled, only the magnetic circuit system 32 and the vibration system 31 are used for completing combination, assembly is completed on the production line of the sounding device 100, the cost is effectively reduced, and the product competitiveness is improved.

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

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

Claims

1. A sound emitting device, the sound emitting device comprising:

the second shell covers the notch of the accommodating groove, a limiting table is arranged on one side of the second shell facing the first shell, and the limiting table is enclosed to form an installing groove; a kind of electronic device with high-pressure air-conditioning system

The sound production monomer, sound production monomer is including vibration system and the magnetic circuit that set up relatively, vibration system lid is located the notch of spacing groove, and with the supporting rib is connected, makes vibration system with the spacing groove encloses to close and forms the intercommunication sound passageway's preceding sound cavity, vibration system first casing with the second casing encloses to close and forms back sound cavity, magnetic circuit is located back sound cavity, just magnetic circuit locates in the mounting groove, and with spacing butt of spacing platform.

2. The sound generating device as claimed in claim 1, wherein a support table is provided on a side of the support rib facing the limit groove, and the vibration system is connected to the support table.

3. The sound emitting device of claim 2, wherein the magnetic circuit system is provided with a magnetic gap, and the vibration system comprises:

4. The sound generating device as claimed in claim 3, wherein the diaphragm comprises a dome, a folded ring portion surrounding the dome, and a fixing portion disposed outside the folded ring portion, the fixing portion being connected to the support table and being in limited abutment with the support rib;

5. The sound generating device as claimed in claim 4, wherein the supporting member further comprises a lead portion, the supporting rib is provided with a first notch, the first housing and/or the second housing is provided with a second notch, one end of the lead portion is connected with the external fixing portion, and the other end of the lead portion passes through the first notch and the second notch, protrudes out of the rear sound cavity, and is connected with a side of the second housing facing away from the first housing.

6. The sound generating device as claimed in claim 5, wherein the outer fixing part and the vibration part are each provided in a rectangular ring, the vibration arms include four, one end of each vibration arm is connected to a rectangular side of the outer fixing part, and the other end of each vibration arm is connected to a rectangular corner of the vibration part;

7. The sound generating device as claimed in claim 5, wherein the first housing is further provided with a first guiding table, the first guiding table is located at a side of the supporting rib facing away from the limiting groove and is arranged corresponding to the first notch, and the first guiding table is provided with a first guiding surface, and the first guiding surface is opposite to the first notch and abuts against the lead part so as to guide the lead part;

8. The sound generating device according to any one of claims 1 to 7, wherein the first housing comprises a housing cover and a sound guiding member, the housing cover is provided with the accommodating groove and a sound outlet, the sound guiding member is provided with a sound guiding cavity, the sound guiding member is arranged around the sound outlet so that the sound guiding cavity is communicated with the sound outlet and surrounds the sound outlet to form the sound outlet channel, two ends of the supporting rib are respectively connected with two opposite sides of the sound guiding member, and the periphery of the vibration system is in limit connection with the sound guiding member;

9. An electronic device comprising a device body and the sound emitting device according to any one of claims 1 to 8, the sound emitting device being provided to the device body.