WO2022227586A1 - Sound production device and electronic apparatus - Google Patents

Abstract

Disclosed in the present invention are a sound production device and an electronic apparatus. The sound production device comprises a first housing, a second housing, and a sound production unit; an accommodating groove and a sound output channel are formed in the first housing; supporting ribs are arranged on the bottom wall of the accommodating groove in a protruding mode; the supporting ribs define a limiting groove that is communicated with the sound output channel; the second housing covers the opening of the accommodating groove; the sound production unit comprises a vibration system and a magnetic circuit system that are arranged opposite to each other; the vibration system covers the opening of the limiting groove and is connected to the supporting ribs, so that the vibration system and the limiting groove define a front acoustic cavity communicated with the sound output channel; the vibration system, the first housing, and the second housing define a rear acoustic cavity; and the magnetic circuit system is provided in the second housing and located in the rear acoustic cavity. The present invention is aimed at simplifying the assembling of the sound production device and increasing the volume of the rear acoustic cavity of the sound production device by improving the structure of the sound production unit, thereby improving the acoustic performance of the sound production device.

Description

Sound-emitting devices and electronic equipment technical field

The invention relates to the technical field of electro-acoustic conversion, in particular to a sound-emitting device and an electronic device applying the sound-emitting device.

Background technique

Sound-emitting devices are widely used in portable mobile electronic products, such as mobile phones, to convert audio signals into sound for playback. The sound-emitting devices have high loudness and good low-frequency sound effects. With the increasing functions of electronic products, the space for sound-emitting devices is getting smaller and smaller.

In the related art, a sound-generating unit is installed in the housing of the sound-generating device, and after conduction through the FPCB, the diaphragm assembly of the sound-generating unit is driven to vibrate and emit sound. The sounding monomer occupies part of the volume of the rear sound cavity, which reduces the volume of the rear sound cavity, thereby reducing the acoustic performance of the sounding device, and the assembly line of the sounding device is lengthy, complex and difficult to process.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a sound-generating device and electronic equipment, aiming to improve the acoustic performance of the sound-generating device by improving the structure of the sound-generating unit, simplifying the assembly of the sound-generating device, and increasing the volume of the rear acoustic cavity of the sound-generating device .

In order to achieve the above object, the present invention proposes a sound-emitting device, the sound-emitting device includes:

A first shell, the first shell is provided with an accommodating groove and a sound outlet channel, the bottom wall of the accommodating groove is protruded with a support rib, and the support rib encloses and forms a limit that communicates with the sound outlet channel. bit slot;

a second casing, the second casing is covered with the notch of the accommodating groove; and

A sound-generating unit, the sound-generating unit includes a vibration system and a magnetic circuit system arranged oppositely, the vibration system is covered with the notch of the limit slot, and is connected with the support rib, so that the vibration system and the The limit slot is enclosed to form a front acoustic cavity that communicates with the sound outlet channel, the vibration system, the first casing and the second casing are enclosed to form a rear acoustic cavity, and the magnetic circuit system is provided at the The second shell is located in the rear acoustic cavity.

In one embodiment, a limit table is provided on the side of the second shell facing the first shell, the limit table encloses an installation groove, and the magnetic circuit system is arranged in the installation groove , and limit contact with the limit platform.

In one embodiment, a support table is provided on the side of the support rib facing the limiting groove, and the vibration system is connected to the support table.

In one embodiment, the magnetic circuit system is provided with a magnetic gap, and the vibration system includes:

A diaphragm, the periphery of the diaphragm is connected to the support table, so that the diaphragm and the limiting groove are enclosed to form the front acoustic cavity, and the diaphragm, the first shell and the the second shell encloses the rear acoustic cavity;

a support member, the support member is arranged on the side of the diaphragm facing away from the front acoustic cavity; and

A voice coil, one end of the voice coil is connected to the support member or the diaphragm, and the other end of the voice coil is suspended in the magnetic gap.

In one embodiment, the vibrating membrane includes a dome, a folded ring portion arranged around the dome, and a fixing portion disposed outside the folded ring portion, the fixing portion is connected to the support table and is connected to the support stand. the support ribs are in limited contact;

The support member includes an outer fixing portion and a vibrating portion arranged inside the outer fixing portion, the vibrating portion is connected to the outer fixing portion through a vibrating arm, and the outer fixing portion and the fixing portion face away from the outer fixing portion. One side of the support table is connected, the vibrating part corresponds to the dome, and the voice coil is connected to the side of the vibrating part facing away from the dome.

In one embodiment, the support member further includes a lead portion, the support rib is provided with a first gap, the first housing and/or the second housing is provided with a second gap, and the lead portion is provided with a second gap. One end of the lead part is connected to the outer fixing part, and the other end of the lead part passes through the first notch and the second notch, protrudes out of the rear acoustic cavity, and faces away from the second shell. One side of the first housing is connected.

In one embodiment, the outer fixing portion and the vibrating portion are both arranged as rectangular rings, the vibrating arms include four, and one end of each vibrating arm is connected to a rectangular side of the outer fixing portion, The other end of each of the vibrating arms is connected to a rectangular corner of the vibrating portion;

And/or, the support member further includes a pad, the pad is arranged on the side of the vibration part facing away from the outer fixing part, and the lead wire of the voice coil is connected to the pad;

And/or, the lead portion includes two, and the two lead portions are connected to the outer fixing portion, and are arranged at intervals and in parallel.

In one embodiment, the first housing is further provided with a first guide table, the first guide table is located on the side of the support rib facing away from the limiting groove, and is disposed corresponding to the first gap. , the first guide stage is provided with a first guide surface, the first guide surface is directly opposite to the first notch, and abuts with the lead portion to guide the lead portion;

And/or, the first housing is further provided with a second guide platform, the second guide platform is disposed corresponding to the second gap, and the second guide platform is provided with a second guide surface adjacent to the second gap , the second guide surface is in contact with the lead portion to guide the lead portion.

In one embodiment, the first housing includes a casing and a sound guide, the casing is provided with the accommodating groove and the sound outlet, the sound guide is provided with a sound guide cavity, and the sound guide is A member is arranged around the sound outlet, so that the sound guide cavity is communicated with the sound outlet, and encloses the sound outlet channel, and the two ends of the support rib are respectively connected with the opposite two sides of the sound guide member. side connection, and the perimeter of the vibration system is connected to the limit of the sound guide member;

And/or, the extending direction of the sound outlet channel and the bottom wall of the accommodating groove are arranged at an included angle.

The present invention also provides an electronic device, comprising a device body and the above-mentioned sound-emitting device, wherein the sound-emitting device is provided on the device body.

In the sound-emitting device of the technical solution of the present invention, support ribs are arranged on the bottom wall of the accommodating groove of the first casing, so that the support ribs enclose a limit groove that communicates with the sound outlet, so that the limit groove is used to support and install the sound-emitting unit. Vibration system, so that the vibration system and the limit slot are enclosed to form a front sound cavity that communicates with the sound channel, and the vibration system, the first shell and the second shell are enclosed to form a rear sound cavity, and the second shell is used to install and fix the sound-emitting unit. Therefore, by changing the vibration system of the sounding unit and the installation structure of the magnetic circuit system and the first housing and the second housing, the sounding unit cancels the traditional injection molding shell structure of the unit, thereby effectively The volume of the rear acoustic cavity of the sounding device is increased, which effectively improves the acoustic performance of the sounding device; at the same time, the sounding unit cancels the injection molding shell structure of the traditional single unit, which simplifies the assembly of the entire sounding device, effectively reduces costs, and improves products. Competitiveness.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the structures shown in these drawings without creative efforts.

1 is a schematic structural diagram of a sound-emitting device in an embodiment of the present invention;

2 is an exploded schematic diagram of a sound-emitting device in an embodiment of the present invention;

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

4 is a schematic structural diagram of a first housing in an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a first housing in an embodiment of the present invention.

Description of reference numbers:

label	name	label		name
100	sound device	twenty three	mounting slot
1	first shell	3	sounding unit
1a	accommodating slot	31	Vibration system
1b		sound channel	311	Diaphragm
11	support ribs	3111	dome
111	Limit slot	3112	Ring part
112	support table	3113	Fixed part
113	first gap	312	voice coil
12	first guide table	313	supporting item
121	first guide surface	3131	external fixation
13	second guide table	3132	Vibration Department
131	second guide surface	3133	vibrating arm
14	cover	3134	lead part
141	mouth	3135	pad
15	sound guide	32	Magnetic circuit system
151	acoustic cavity	321	Magnetic gap
152	first paragraph	322	Magnetic yoke
153	second paragraph	323	center magnet
154	positioning table	324	side magnet
2	second shell	41	front vocal
twenty one	second gap	42	back vocal
twenty two	Limit table

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

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly.

At the same time, the meaning of "and/or" or "and/or" in the whole text is that it includes three schemes, taking "A and/or B" as an example, including scheme A, scheme B, or scheme A and B at the same time satisfied program.

In addition, descriptions such as "first", "second", etc. in the present invention are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist. , is not within the scope of protection required by the present invention.

Sound-emitting devices are widely used in portable mobile electronic products, such as mobile phones, to convert audio signals into sound for playback. The sound-emitting devices have high loudness and good low-frequency sound effects. With the increasing functions of electronic products, the space for sound-emitting devices is getting smaller and smaller.

In the related art, a sound-generating unit is installed in the housing of the sound-generating device, and after conduction through the FPCB, the diaphragm assembly of the sound-generating unit is driven to vibrate and emit sound. The entire sounding unit occupies part of the volume of the rear sound cavity, thereby reducing the volume of the rear sound cavity, reducing the acoustic performance of the sounding device, and the assembly line of the sounding device is lengthy, complex and difficult to process.

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

Please refer to FIG. 1 to FIG. 5 , in the embodiment of the present 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 container The bottom wall of the accommodating groove 1a is provided with a supporting rib 11, and the supporting rib 11 encloses a limiting groove 111 that communicates with the sound emitting channel 1b. The second shell 2 is covered with the accommodating rib 11. The notch of the slot 1a, the sound generating unit 3 includes a vibration system 31 and a magnetic circuit system 32 arranged oppositely. The position slot 111 encloses the front acoustic cavity 41 that communicates with the sound outlet 1b, the vibration system 31, the first casing 1 and the second casing 2 enclose the rear acoustic cavity 42, and the magnetic circuit system 32 is provided in the second casing 2, and located in the rear acoustic cavity 42 .

It can be understood that the first shell 1 and the second shell 2 constitute the shell structure of the sound-emitting device 100. By setting the shell structure as a two-part structure of the first shell 1 and the second shell 2, it is convenient for the sound-emitting device. Disassembly and assembly of body 3. It can be understood that the first casing 1 and the second casing 2 may be connected to an integral structure by a fixed manner such as welding, which is beneficial to improve the structural strength and sealing performance of the casing of the sounding device 100 . Of course, the first housing 1 and the second housing 2 can also be connected as a whole by a detachable connection such as snap connection, plug fit, screw connection or pin connection, which can improve the convenience of disassembly and assembly of the sounding unit 3 .

In this embodiment, the first casing 1 is provided with an accommodating groove 1a, and the second casing 2 is covered with the notch of the accommodating groove 1a, so that the first casing 1 and the second casing 2 are enclosed to form an installation The installation space of the sounding unit 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-emitting channel 1b, so that the sound generated by the sound-generating unit 3 can be transmitted to the outside through the sound-emitting channel 1b.

As shown in FIGS. 2 to 5 , the bottom wall of the accommodating groove 1a of the first housing 1 is protruded with a supporting rib 11 , and the supporting rib 11 encloses a limiting groove 111 that communicates with the sound outlet 1b, that is, the supporting rib 11 is arranged around the sound outlet channel 1b, and a limit groove 111 that communicates with the sound outlet channel 1b is formed on the bottom wall of the accommodating groove 1a, so that the limit groove 111 formed by the support rib 11 can be used to facilitate the sound production unit. The vibration system 31 of 3 realizes positioning and installation, so that the vibration system 31 covers the notch of the limiting groove 111 and is connected with the support rib 11 . It can be understood that the vibration system 31 , the support ribs 11 , and the bottom wall of the limiting groove 111 enclose the front acoustic cavity 41 that communicates with the sound outlet 1b , and the vibration system 31 , the support ribs 11 , the first shell 1 and the second shell The body 2 is enclosed to form a rear acoustic cavity 42 .

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

In the sound-emitting device 100 of the present invention, the support ribs 11 are provided on the bottom wall of the accommodating groove 1a of the first housing 1, so that the support ribs 11 enclose the limit grooves 111 that communicate with the sound outlet 1b, so as to be supported by the limit grooves 111 And the vibration system 31 of the sounding unit 3 is installed, so that the vibration system 31 and the limit groove 111 are enclosed to form the front acoustic cavity 41 that communicates with the sound outlet 1a, and the vibration system 31, the first housing 1 and the second housing 2 are enclosed. The rear acoustic cavity 42 is formed, and the second housing 2 is used to install and fix the magnetic circuit system 32 of the sounding unit 3, so that by changing the vibration system 31 and the magnetic circuit system 32 of the sounding unit 3 and the first housing 1 and the second The installation structure of the housing 2 enables the sounding unit 3 to cancel the injection shell structure of the traditional single unit, thereby effectively increasing the volume of the rear acoustic cavity 42 of the sounding device 100 and effectively improving the acoustic performance of the sounding device 100; at the same time, the sound The single unit 3 cancels the injection molding shell structure of the traditional single unit, which simplifies the assembly of the entire sounding device 100 , effectively reduces costs, and improves product competitiveness.

In this embodiment, the first casing 1 and the second casing 2 can be optionally made of metal materials. It can be understood that the first shell 1 and the second shell 2 can be made of thinner steel sheets, so that the first shell 1 and the second shell 2 can be designed to be thinner, thereby greatly improving the The volume of the cavity in the shell structure of the sounding device 100 effectively increases the volume of the rear acoustic cavity 42 enclosed by the sounding unit 3 and the first shell 1 and the second shell 2, thereby improving the acoustic performance of the sounding device 100. Especially the low frequency acoustic performance.

Optionally, the support rib 11 is made of metal material, and the vibration system 31 of the sound-emitting unit 3 is supported by the support rib 11 made of metal material. The volume of the rear acoustic cavity 42 occupied by the support ribs 11 is reduced, so as to ensure the volume of the rear acoustic cavity 42, thereby improving the low-frequency acoustic performance. At the same time, the vibration system 31 and the magnetic circuit system 32 of the sounding unit 3 can also achieve heat dissipation through the support ribs 11, the first casing 1 and the second casing 2 made of metal materials, thereby improving the heat dissipation effect.

In one embodiment, the side of the second housing 2 facing the first housing 1 is provided with a limit table 22, the limit table 22 encloses an installation slot 23, and the magnetic circuit system 32 is arranged in the installation slot 23, and is connected with the installation slot 23. The limit platform 22 is in limit contact.

As shown in FIG. 3 , by disposing a limit table 22 on the side of the second shell 2 facing the first shell 1 , the limit table 22 encloses the surface of the second shell 2 to form a mounting groove 23 , thereby facilitating the The magnetic circuit system 32 is positioned and installed by using the installation slot 23 .

It can be understood that, as shown in FIG. 2 and FIG. 3 , the magnetic circuit system 32 includes a magnetic conductive yoke 322 , a center magnet 323 and a side magnet 324 , wherein the magnetic conductive yoke 322 is arranged in the installation slot 23 and is connected with the limit platform 22 Limit contact, the center magnet 323 is arranged on the side of the magnetic yoke 322 facing away from the second housing 2 , and the side magnet 324 is arranged on the side of the magnetic yoke 322 facing away from the second housing 2 and surrounds the central magnet 323 The side magnets 324 and the center magnet 323 are spaced apart to form a magnetic gap 321 .

In this embodiment, the peripheral edge of the magnetic conductive yoke 322 of the magnetic circuit system 32 is in limited contact with the limiting platform 22 . The center magnet 323 includes a center magnet and a center washer, and the side magnet 324 includes a side magnet and a side washer. The side magnet 324 is arranged around the center magnet 323 and is spaced from the center magnet 323, so that a magnet is formed between the side magnet 324 and the center magnet 323. Gap 321. It can be understood that, the side magnets 324 can be optionally a ring-shaped magnetic circuit structure or a plurality of side magnetic circuit segment structures, which are not limited herein.

It can be understood that the center magnet and the center washer of the center magnet 323 can be selected as plate-like structures, and the structural outlines of the center magnet and the center washer are similar. Ring structure, edge magnets and edge washers have similar structural outlines.

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

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

It can be understood that the support table 112 can be selected as a ring structure surrounding 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 can abut against the support rib 11 in a limited position. Of course, in other embodiments, the peripheral edge of the vibration system 31 may also be spaced 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 arranged 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 connected to the support rib 11 . Limit contact, so that it can be made. The vibration system 31 and the limiting groove 111 are enclosed to form the front acoustic cavity 41 and the vibration system 31 , the first shell 1 and the second shell 2 are enclosed to form the rear acoustic cavity 42 to be sealed and isolated from each other.

In one embodiment, the magnetic circuit system 32 is provided with a magnetic gap 321 , and the vibration system 31 includes a diaphragm 311 , a support member 313 and a voice coil 312 , wherein the periphery of the diaphragm 311 is connected to the support table 112 so that the diaphragm 311 The front acoustic cavity 41 is formed by enclosing with the limiting groove 111 , and the rear acoustic cavity 42 is formed by the diaphragm 311 , the first casing 1 and the second casing 2 . One end of the voice coil 312 is connected to the support member 313 or the diaphragm 311 , and the other end of the voice coil 312 is suspended in the magnetic gap 321 .

In this embodiment, the support table 112 is provided on the side of the support rib 11 facing the limiting groove 111 , so that the periphery of the diaphragm 311 is connected to the support table 112 and abutted with the support rib 11 in a limited position, so that the support rib is used. The 11 pairs of diaphragms 311 of the vibration system 31 are installed in a limited position. It can be understood that the support member 313 is provided between the diaphragm 311 and the voice coil 312 by providing the support member 313, so that the support member 313 is used to improve the vibration effect of the voice coil 312, and at the same time, the vibration of the voice coil 312 is avoided. Swing, resonance phenomenon occurs. Optionally, the peripheral edge of the support member 313 is in limited contact with the support rib 11 .

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

By conducting the voice coil 312 with the external circuit, the voice coil 312 runs up and down in the magnetic gap 321 of the magnetic circuit system 32 to drive the diaphragm 311 to vibrate and produce sound. In this embodiment, the diaphragm 311 , the support member 313 and the voice coil 312 of the vibration system 31 are fixedly installed by the cooperation of the support ribs 11 and the support table 112 , so that the vibration system 31 of the sound generating unit 3 is no longer fixedly installed on the In the structure of the injection-molded housing in the conventional monomer, the injection-molded housing structure in the conventional monomer is eliminated, thereby effectively increasing the volume of the rear acoustic cavity 42 of the sound-emitting device 100 .

In one embodiment, the diaphragm 311 includes a dome 3111, a ring portion 3112 disposed around the dome 3111, and a fixing portion 3113 disposed outside the ring portion 3112. The fixing portion 3113 is connected to the support table 112 and to the support ribs. 11 Limit contact; the support member 313 includes an outer fixing portion 3131 and a vibrating portion 3132 arranged on the inner side of the outer fixing portion 3131. Connected to one side of the support table 112 , the vibration part 3132 corresponds to the dome 3111 , and the voice coil 312 is connected to the side of the vibration part 3132 facing away from the dome 3111 .

As shown in FIG. 2 and FIG. 3 , the spherical top 3111 , the folded ring portion 3112 and the fixing portion 3113 of the diaphragm 311 can optionally be integrally formed. It can be understood that the ring portion 3112 of the diaphragm 311 may be a structure that is convex upward or concave downward. The spherical top 3111 of the diaphragm 311 may be a flat plate structure, and at this time, the spherical top 3111 is integrally connected with the folding ring portion 3112 . Of course, in other embodiments, the dome 3111 of the diaphragm 311 can also be set as a hollow structure. In this case, the diaphragm 311 also includes a reinforcing layer covering the hollow structure of the dome 3111, which is not described here. limited.

In this embodiment, the supporting member 313 is configured as the outer fixing portion 3131, the vibrating portion 3132 and the vibrating arm 3133, so that the vibrating portion 3132 is connected to the outer fixing portion 3131 through the vibrating arm 3133, and the supporting member 313 is connected to the outer fixing portion 3131 through the outer fixing portion 3131. The fixed part 3113 of the diaphragm 311 is connected to the side facing away from the support table 112 and is in limited contact with the support rib 11 so as to realize positioning, installation and fixation. The vibrating part 3132 of the support 313 corresponds to the dome 3111 of the diaphragm 311 , and is connected with the voice coil 312 , so that when the voice coil 312 moves up and down in the magnetic gap 321 , it drives the vibration part 3132 of the support member 313 and the vibration film 311 to vibrate.

It can be understood that, the vibration part 3132 is connected to the external fixing part 3131 through the vibration arm 3133, on the one hand, the elastic capacity of the vibration part 3132 can be increased; Optionally, the outer fixing portion 3131 , the vibrating portion 3132 and the vibrating arm 3133 of the support member 313 are integrally formed. In this embodiment, the outer fixing portion 3131 , the vibrating portion 3132 and the vibrating arm 3133 of the support member 313 are located in the same plane.

Optionally, the outer fixing portion 3131 and the vibrating portion 3132 are both arranged as rectangular rings, the vibrating arms 3133 include four, one end of each vibrating arm 3133 is connected to a rectangular side of the outer fixing portion 3131, and the other side of each vibrating arm 3133 is One end is connected to a rectangular corner of the vibrating part 3132 . It can be understood that this arrangement can be beneficial to increase the vibration performance of the vibration part 3132 .

In one embodiment, the support member 313 further includes a lead portion 3134 , the support 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 Connected to the outer fixing portion 3131 , the other end of the lead portion 3134 passes through the first notch 113 and the second notch 21 , extends out of the rear acoustic cavity 42 , and is connected to the side of the second housing 2 facing away from the first housing 1 .

In this embodiment, the lead portion 3134 is provided on the support member 313, so that one end of the lead portion 3134 is connected to the outer fixing portion 3131, and the other end of the lead portion 3134 passes through the first notch 113 and the second notch 21, and protrudes out. The rear acoustic cavity 42 is connected to the side of the second casing 2 facing away from the first casing 1 , so that the lead portion 3134 is used to facilitate connection with the external circuit.

As shown in FIG. 2 , optionally, two lead parts 3134 are included, and the two lead parts 3134 are connected to the outer fixing part 3131 and arranged at intervals and in parallel. At this time, the support rib 11 is provided with two first notches 113, and the first casing 1 and/or the second casing 2 is provided with two second notches 21, so that the two lead parts 3134 can pass through the two first notches 21 easily. A gap 113 and two second gaps 21 extend out of the rear acoustic cavity 42 and are connected to the side of the second housing 2 facing away from the first housing 1 .

It can be understood that the first notch 113 may be a groove, a recess, a through hole or an opening, etc., which is provided at one end of the support rib 11 away from the bottom wall of the limiting groove 111 . In this embodiment, the first notch 113 is flush with the support base 112 , which is beneficial for the connection of the lead portion 3134 and the outer fixing portion 3131 .

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

It can be understood that, as shown in FIG. 2 , by setting the pad 3135 to connect the lead wire of the voice coil 312 by using the pad 3135, on the one hand, the voice coil 312 can be connected to the external circuit by using the pad 3135; on the other hand, The wiring arrangement of the lead wires of the voice coil 312 can be simplified, and the lead wires of the voice coil 312 can be prevented from being broken during the vibration of the voice coil 312 and other phenomena.

In this embodiment, the support member 313 can be optionally made of FPCB. Of course, the support member 313 can also be provided with a conductive circuit inside, so that the pads 3135 and the lead portions 3134 are electrically connected.

In one embodiment, as shown in FIG. 2 and FIG. 4 , the first housing 1 is further provided with a first guide table 12 . The first guide table 12 is located on the side of the support rib 11 facing away from the limiting groove 111 and corresponds to the side of the support rib 11 . The first notch 113 is provided, and the first guide table 12 is provided with a first guide surface 121 . The first guide surface 121 is directly opposite to the first notch 113 and abuts against the lead portion 3134 to guide the lead portion 3134 .

It can be understood that by setting the first guide table 12 , the first guide surface 121 of the first guide table 12 abuts against the lead portion 3134 , so as to guide and support the lead portion 3134 .

In one embodiment, as shown in FIGS. 2 and 4 , the first housing 1 is further provided with a second guide table 13 , the second guide table 13 is arranged corresponding to the second gap 21 , and the second guide table 13 is adjacent to the second gap 21 is provided with a second guide surface 131 , and the second guide surface 131 abuts against the lead portion 3134 to guide the lead portion 3134 .

It can be understood that by setting the second guide table 13 , the second guide surface 131 of the second guide table 13 abuts against the lead portion 3134 , so as to guide and support the lead portion 3134 . Optionally, the second guide surface 131 and the first guide surface 121 are located in the same plane.

In one embodiment, the first housing 1 includes a casing 14 and a sound guide member 15, the casing 14 is provided with a accommodating groove 1a and a sound outlet 141, the sound guide member 15 is provided with a sound guide cavity 151, and the sound guide member 15 Surrounding the sound outlet 141 is arranged so that the sound guide cavity 151 communicates with the sound outlet 141 and forms a sound outlet 1b. The perimeter of the vibration system 31 is connected to the sound guide member 15 in a limited position, that is, the diaphragm 311 of the vibration system 31 is connected to the sound guide member 15 in a limited position.

As shown in FIG. 3 to FIG. 5 , the housing 14 of the first housing 1 is provided with an accommodating groove 1 a and a sound outlet 141 , and the sound guide 15 is arranged around the sound outlet 141 , so that the sound guide cavity 151 and the sound outlet 141 are formed. 141 is connected and encloses the sound outlet 1b. At this time, both ends of the support rib 11 are respectively connected to opposite sides of the sound guide 15, thereby enclosing and forming the limiting groove 111 communicating with the sound outlet 1b.

In this embodiment, the shell 14 of the first shell 1 is made of a metal material, optionally made of a relatively thin steel sheet. At this time, the second shell 2 can be welded with the first shell by metal welding. The casing 14 of the body 1 is fixed, and this structure can ensure the structural strength of the casing structure of the sound-emitting device 100. Compared with the all-plastic casing structure of the related art, the first casing 1 and the second casing 2 It can be designed to be thinner, thereby greatly increasing the volume of the cavity in the shell structure, and effectively increasing the distance between the sounding unit 3 and the rear acoustic cavity 42 enclosed by the first shell 1 and the second shell 2. volume, thereby improving the acoustic performance of the sound-emitting device 100, especially the low-frequency acoustic performance.

It can be understood that by integrally disposing the sound guide 15 on the shell 14 of the first housing 1, not only the connection stability and sealing performance of the sound guide 15 and the shell 14 are improved, but also the use of the first shell is facilitated. The sound guide member 15 of the body 1 achieves a positioning effect on the support rib 11 . It can be understood that the sound guide member 15 is located between the sound outlet 141 and the support rib 11 , and the sound outlet 141 penetrates through the casing 14 to communicate with the outside world. Optionally, the housing cover 14 and the sound guide 15 are integrally formed.

In the present embodiment, the support rib 11 is provided with an escape port corresponding to the sound guide member 15, and the escape port penetrates the support rib 11 and the support platform 112 at the same time, so that the end of the sound guide member 15 away from the casing 14 and the space between the escape port The inner wall is connected, that is, the two ends of the support rib 11 are fixedly connected with the peripheral edge or the outer wall of the sound guide member 15, so as to improve the sealing performance of the connection. It can be understood that the front sound cavity 1b communicates with the sound outlet 141 through the sound guide cavity 1121 of the sound guide member 15 to form a side sound emission structure of the sound production device 100 .

In one embodiment, as shown in FIG. 3 , the sound guide 15 includes a first section 152 spaced from the bottom wall of the accommodating slot 1a, and the opposite ends of the first section 152 are bent and extended toward the bottom wall of the accommodating slot 1a The second section 153, the first section 152, the two second sections 153 are enclosed with the bottom wall of the accommodating groove 1a to form a sound guide cavity 151, and the two ends of the support rib 11 are respectively connected with the two second sections 153, the first One end of the segment 152 away from the sound outlet 141 is provided with a positioning table 154 , the positioning table 154 is connected with the support table 112 and is arranged flush, and the periphery of the diaphragm 311 is connected with the positioning table 154 and is in limited contact with the first section 152 .

It can be understood that the two ends of the support rib 11 are respectively connected to the two second segments 153 of the sound guide 15 as a whole. The positioning table 154 is provided at one end of the first section 152 away from the sound outlet 141, so that the positioning table 154 is connected to the support table 112 and is arranged flush, so that the positioning table 154 and the support table 112 are further used to position the diaphragm 311. Install and support, while effectively sealing and isolating the front acoustic cavity 41 and the rear acoustic cavity 42.

Optionally, the casing 14 , the sound guide 15 and the support ribs 11 are integrally formed by injection molding. Of course, in other embodiments, the support rib 11 is fixed and sealed with the bottom wall of the accommodating groove 1a by means of gluing or laser welding.

In one embodiment, the extending direction of the sound outlet channel 1b and the bottom wall of the accommodating groove 1a are arranged at an included angle. As shown in FIG. 3 and FIG. 5 , the first section 152 of the sound guide 15 is inclined from one end of the housing 14 toward the bottom wall of the accommodating groove 1a. In this way, it can be ensured that the end of the sound outlet channel 1b away from the sound outlet 141 is completely located in the front sound cavity 41 .

The sound-generating device 100 of the present invention eliminates the The traditional single-molded shell structure is adopted, and the rear acoustic cavity 42 of the sound generating device 100 is effectively enlarged, so that the space of the rear acoustic cavity 42 is increased by 15%-20% compared with the transmission structure. At the same time, by fixing the magnetic circuit system 32 and the vibration system 31 of the sounding unit 3 on the second casing 2 and the first casing 1 respectively, the traditional production line of the single unit is eliminated, and only the magnetic circuit system 32 is used. Complete the combination with the vibration system 31, and complete the assembly in the production line of the sound-emitting device 100, which effectively reduces the cost and enhances the competitiveness of the product.

The present invention also provides an electronic device, the electronic device includes a device body and a sound-generating device 100, and the sound-generating device 100 is provided on the device body. The specific structure of the sound-emitting device 100 refers to the foregoing embodiments. Since the electronic device adopts all the technical solutions of the foregoing embodiments, it has at least all the beneficial effects brought by the technical solutions of the foregoing embodiments, which will not be repeated here. Repeat.

The above descriptions are only optional embodiments of the present invention, and are not intended to limit the scope of the present invention. Under the conception of the present invention, the equivalent structural transformations made by the contents of the description and drawings of the present invention, or the direct/indirect application Other related technical fields are included in the scope of patent protection of the present invention.

Claims (10)

1. A sound-emitting device, characterized in that the sound-emitting device comprises:

   A first shell, the first shell is provided with an accommodating groove and a sound outlet channel, the bottom wall of the accommodating groove is protruded with a support rib, and the support rib encloses and forms a limit that communicates with the sound outlet channel. bit slot;

   a second casing, the second casing is covered with the notch of the accommodating groove; and

   A sound-generating unit, the sound-generating unit includes a vibration system and a magnetic circuit system arranged oppositely, the vibration system is covered with the notch of the limit slot, and is connected with the support rib, so that the vibration system and the The limit slot is enclosed to form a front acoustic cavity that communicates with the sound outlet channel, the vibration system, the first casing and the second casing are enclosed to form a rear acoustic cavity, and the magnetic circuit system is provided at the The second shell is located in the rear acoustic cavity.
2. The sound-emitting device according to claim 1, wherein a limit table is provided on the side of the second casing facing the first shell, the limit table encloses an installation groove, and the magnetic circuit The system is arranged in the installation groove and is in limited contact with the limit platform.
3. The sound-emitting device according to claim 1, characterized in that, a support table is provided on the side of the support rib facing the limiting groove, and the vibration system is connected to the support table.
4. The sound-emitting device according to claim 3, wherein the magnetic circuit system is provided with a magnetic gap, and the vibration system comprises:

   A diaphragm, the periphery of the diaphragm is connected to the support table, so that the diaphragm and the limiting groove are enclosed to form the front acoustic cavity, and the diaphragm, the first shell and the the second shell encloses the rear acoustic cavity;

   a support member, the support member is disposed on the side of the diaphragm facing away from the front acoustic cavity; and

   A voice coil, one end of the voice coil is connected to the support member or the diaphragm, and the other end of the voice coil is suspended in the magnetic gap.
5. The sound-generating device according to claim 4, wherein the diaphragm comprises a dome, a ring part arranged around the dome, and a fixing part arranged on the outside of the ring part, the fixing part and the support platform is connected and abutted with the support rib;

   The support member includes an outer fixing portion and a vibrating portion arranged inside the outer fixing portion, the vibrating portion is connected to the outer fixing portion through a vibrating arm, and the outer fixing portion and the fixing portion face away from the outer fixing portion. One side of the support table is connected, the vibrating part corresponds to the dome, and the voice coil is connected to the side of the vibrating part facing away from the dome.
6. The sound-emitting device according to claim 5, wherein the support member further comprises a lead portion, the support rib is provided with a first notch, and the first housing and/or the second housing is provided with a lead portion. The second notch, one end of the lead part is connected to the outer fixing part, the other end of the lead part passes through the first notch and the second notch, protrudes out of the rear acoustic cavity, and is connected with the The side of the second housing facing away from the first housing is connected.
7. The sound-generating device according to claim 6, wherein the outer fixing part and the vibrating part are arranged in a rectangular ring, the vibrating arms comprise four, and one end of each vibrating arm is connected to the outer A rectangular side of the fixed portion is connected, and the other end of each vibrating arm is connected to a rectangular corner of the vibrating portion;

   And/or, the support member further includes a pad, the pad is arranged on the side of the vibration part facing away from the outer fixing part, and the lead wire of the voice coil is connected to the pad;

   And/or, the lead portion includes two, and the two lead portions are connected to the outer fixing portion, and are arranged at intervals and in parallel.
8. The sound-emitting device according to claim 6, wherein the first housing is further provided with a first guide platform, and the first guide platform is located on the side of the support rib facing away from the limiting groove, and corresponding to the first notch, the first guide table is provided with a first guide surface, the first guide surface is opposite to the first notch, and abuts with the lead part to guide the lead part;

   And/or, the first housing is further provided with a second guide platform, the second guide platform is disposed corresponding to the second gap, and the second guide platform is provided with a second guide surface adjacent to the second gap , the second guide surface is in contact with the lead portion to guide the lead portion.
9. The sound-generating device according to any one of claims 1 to 8, wherein the first housing comprises a shell and a sound guide, and the shell is provided with the accommodating groove and the sound outlet, The sound guide member is provided with a sound guide cavity, and the sound guide member is arranged around the sound outlet, so that the sound guide cavity communicates with the sound outlet, and encloses the sound outlet channel, and the support Two ends of the rib are respectively connected with the opposite sides of the sound guide, and the periphery of the vibration system is connected with the sound guide in a limited position;

   And/or, the extending direction of the sound outlet channel and the bottom wall of the accommodating groove are arranged at an included angle.
10. An electronic device, characterized by comprising a device body and the sound-emitting device according to any one of claims 1 to 9, wherein the sound-emitting device is provided on the device body.

Images