CN111836159A

CN111836159A - Sound production module

Info

Publication number: CN111836159A
Application number: CN202010992912.7A
Authority: CN
Inventors: 蔡晓东; 刘松
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2020-10-27
Anticipated expiration: 2040-09-21
Also published as: CN111836159B

Abstract

The invention discloses a sounding module, which comprises a shell with an accommodating space, and a magnetic circuit system, a high-pitch vibration system and a low-pitch vibration system which are arranged in the accommodating space, wherein the magnetic circuit system comprises a sealing element, a magnetic steel component and a first washer attached to the magnetic steel component; magnetic circuit's relative both sides are located to bass vibration system and high pitch vibration system branch, first china department includes that the subsides locate the first magnetic conduction portion on the magnet steel components and from first magnetic conduction portion to keeping away from the bellied second magnetic conduction portion of bass vibration system direction, second magnetic conduction portion forms both ends opening respectively towards bass vibration system and high pitch vibration system's passageway, sealing member shutoff passageway is close to bass vibration system's opening part, chamber behind the high pitch of formation between high pitch vibration system and the magnetic circuit, the high pitch sound chamber in chamber behind second magnetic conduction portion and the sealing member enclose into intercommunication high pitch. The sounding module disclosed by the invention is small in size and wide in audio frequency bandwidth.

Description

Sound production module

Technical Field

The invention relates to the technical field of electroacoustic conversion, in particular to a sounding module.

Background

In order to achieve perfect sound effect, the speaker of the existing partial electronic equipment combines the bass unit and the treble unit, so that the low-frequency part and the high-frequency part of the audio can be presented fully and perfectly, and the bandwidth is fully expanded.

But make up into a sound production module with bass unit and treble unit, it is bigger to probably lead to sound production module size to compare in single vibration unit's sound production module, does not conform to the product thin type requirement.

Therefore, it is desirable to provide a novel sound module to solve the above technical problems.

Disclosure of Invention

The invention mainly aims to provide a sounding module, and aims to solve the technical problem that the sounding module with a high-pitch unit and a low-pitch unit is large in size.

In order to achieve the purpose, the sound production module provided by the invention comprises a shell with an accommodating space, and a magnetic circuit system, a high-pitch vibration system and a low-pitch vibration system which are arranged in the accommodating space, wherein the magnetic circuit system comprises a sealing element, a magnetic steel component and a first washer attached to the magnetic steel component; bass vibration system with treble vibration system branch is located magnetic circuit's relative both sides, first china is located including the subsides first magnetic conduction portion on the magnet steel components with certainly first magnetic conduction portion is to keeping away from the bellied second magnetic conduction portion of bass vibration system direction, second magnetic conduction portion forms both ends difference opening orientation bass vibration system with treble vibration system's passageway, the sealing member shutoff the passageway is close to bass vibration system's opening part, treble vibration system with form the high pitch back cavity between the magnetic circuit, second magnetic conduction portion with the sealing member encloses into the intercommunication the high pitch sound chamber in high pitch back cavity.

Preferably, the sound production module is still including locating the passageway is close to the ventilative piece of high pitch vibration system opening part, the passageway intussuseption is filled with sound absorbing material.

Preferably, the air permeable member is an air permeable net, the sound-absorbing material is sound-absorbing particles, and the diameter of the sound-absorbing particles is larger than the pore diameter of the air permeable net.

Preferably, high pitch vibration system includes high pitch vibrating diaphragm and support the high pitch voice coil loudspeaker voice coil of high pitch vibrating diaphragm vibration, second magnetic conduction portion with the magnet steel component interval sets up and forms second magnetic gap, the high pitch voice coil loudspeaker voice coil inserts second magnetic gap.

Preferably, the second magnetic conduction part includes a top wall spaced from the high-pitch diaphragm and a magnetic conduction wall extending from the first magnetic conduction part to a direction close to the high-pitch diaphragm, the magnetic conduction wall forms the channel, the top wall extends from the magnetic conduction wall to a direction close to a central axis of the channel, and an edge of the air-permeable member is connected to the top wall.

Preferably, the magnetic steel assembly comprises main magnetic steel and side magnetic steel forming a first magnetic gap, the first magnetic conduction part is attached to the main magnetic steel, the bass vibration system comprises a bass vibration diaphragm and a bass voice coil supporting the vibration of the bass vibration diaphragm, and the bass voice coil is inserted into the first magnetic gap.

Preferably, the magnetic circuit system further comprises a second washer arranged on the side magnetic steel, and the first washer and the second washer are arranged on one side of the magnetic steel component close to the bass vibration diaphragm and are respectively arranged on two opposite sides of the bass voice coil.

Preferably, the bass diaphragm includes bass main part, bass book ring portion and bass fixed part that from interior to exterior connected gradually, seted up on the second china department and corresponded the groove of dodging of ring portion is rolled over to the bass.

Preferably, the magnetic circuit system further comprises a third washer arranged on one side of the magnetic steel component close to the high-pitch vibrating diaphragm, one end of the third washer is arranged on the main magnetic steel, and the other end of the third washer is arranged on the side magnetic steel.

Preferably, the bass vibration system, the treble vibration system and the first washer are coaxially arranged.

In the invention, the high-pitch vibration system and the low-pitch vibration system are arranged on two sides of the magnetic circuit system, so that the high-pitch vibration system can output high pitch and the low-pitch vibration system can output low pitch through one sounding module, and the sounding bandwidth of the sounding module is improved; the high-pitch vibration system and the low-pitch vibration system share the same magnetic circuit system, so that the size of the sounding module is reduced; the high-pitch sound cavity is communicated with the high-pitch rear cavity, so that the corresponding air compressible space of the high-pitch vibration system is improved, and the high-pitch vibration system is favorable for sounding.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a sound module according to an embodiment of the present invention;

FIG. 2 is a schematic view of a disassembled structure of the sound module according to an embodiment of the present invention;

FIG. 3 is a schematic top view of a sound module according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of the sound module shown in FIG. 3 along line A-A;

FIG. 5 is a schematic view of a partial cross-sectional view of the sound module shown in FIG. 3 along line A-A;

fig. 6 is an enlarged schematic structural view of a part B of the sound module shown in fig. 4.

Examples reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Sound production module	1	Shell body
11	Upper casing	13	Lower casing
				131	Base plate	133	Side wall
135	Fixing ring	137	Rear cavity cover
				3	Magnetic circuit system	2	Accommodating space
32	First magnetic gap	31	Sealing element
				331	Main magnetic steel	33	Magnetic steel assembly
34	Second magnetic gap	333	Side magnetic steel
				351	A first magnetic conductive part	35	First washer
3531	Roof wall	353	Second magnetic conductive part
				37	Second washer	3533	Magnetic conduction wall
39	Third washer	372	Dodging groove
				5	High-pitch vibration system	51	High-pitch vibrating diaphragm
52	High tone sound cavity	53	High pitch voice coil
				54	High pitch back cavity	7	Bass vibration system
71	Bass vibrating diaphragm	711	Bass body
				713	Bass folded ring part	715	Bass fixing part
72	Low pitch sound cavity	74	Bass rear cavity
				73	Bass voice coil	91	Passive diaphragm
93	Air permeable member

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

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

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a sounding module.

Referring to fig. 1 to 6, in the sound module 100 according to the present invention, the sound module 100 includes a housing 1 having an accommodating space 2, and a magnetic circuit system 3, a treble vibration system 5 and a bass vibration system 7 disposed in the accommodating space 2, where the magnetic circuit system 3 includes a sealing member 31, a magnetic steel assembly 33, and a first washer 35 attached to the magnetic steel assembly 33; bass vibration system 7 and treble vibration system 5 divide and locate magnetic circuit 3's relative both sides, first china 35 is including pasting first magnetic conduction portion 351 of locating on magnetic steel assembly 33 and from first magnetic conduction portion 351 to keeping away from the bellied second magnetic conduction portion 353 of bass vibration system 7 direction, second magnetic conduction portion 353 forms the passageway of both ends difference opening orientation bass vibration system 7 and treble vibration system 5, sealing member 31 shutoff passageway is close to the opening part of bass vibration system 7, form treble back cavity 54 between treble vibration system 5 and the magnetic circuit 3, second magnetic conduction portion 353 and sealing member 31 enclose into the treble tuning cavity 52 of intercommunication treble back cavity 54.

Specifically, bass vibration system 7 includes bass vibrating diaphragm 71 and bass voice coil 73 that supports bass vibrating diaphragm 71 to vibrate, treble vibration system 5 includes treble vibrating diaphragm 51 and the treble voice coil 53 that supports treble vibrating diaphragm 51 vibration with magnetic circuit 3 looks interval setting, treble voice coil 53 and bass voice coil 73 are connected with external circuit electricity respectively, treble voice coil 53 and bass voice coil 73 circular telegram, under the influence of the produced magnetic field of magnetic circuit 3, bass voice coil 73 and treble voice coil 53 vibrate respectively, thereby can drive bass vibrating diaphragm 71 and treble vibrating diaphragm 51 vibration sound production respectively. In this embodiment, the bass vibration system 7 is compared to the treble vibration system 5 for both bass and treble. The sound production module 100 can be directly arranged in the electronic equipment, the bass voice coil 73 and the treble voice coil 53 are respectively electrically connected with the control main board of the electronic equipment, the shape of the shell 1 is matched with the electronic equipment, the edge of the bass vibrating diaphragm 71 is fixedly arranged on the shell 1, so that the area of the bass vibrating diaphragm 71 is increased to the maximum extent, and the loudness of the sound production module 100 is improved.

In this embodiment, the edge of the sealing member 31 is attached to the first magnetic conductive portion 351 to close the opening, but in other embodiments, the edge of the sealing member 31 may be connected to the second magnetic conductive portion 353 to close the opening. Those skilled in the art can also adjust the connection position of the sealing member 31 and the second magnetic conductive part 353 according to the requirement, that is, the distance from the sealing member 31 to the low-pitch diaphragm 71 and the distance from the sealing member 31 to the high-pitch diaphragm 51 are adjusted, so as to adjust the volume of the high-pitch cavity 52 and the volume of the low-pitch back cavity 74 between the sealing member 31 and the low-pitch diaphragm 71. In this embodiment, the sealing member 31 seals the end of the channel, so that the channel and the treble tuning cavity 52 are of the same cavity structure.

In this embodiment, the high-pitch vibration system 5 and the low-pitch vibration system 7 are arranged on two sides of the magnetic circuit system 3, so that the high-pitch vibration system 5 can output high pitch and the low-pitch vibration system 7 can output low pitch through one sounding module 100, and the sounding bandwidth of the sounding module 100 is improved; the high-pitch vibration system 5 and the low-pitch vibration system 7 share the same magnetic circuit system 3, so that the size of the sounding module 100 is reduced; the treble rear chamber 54 communicates with the treble sound chamber 52 to increase the corresponding air-compressible space of the treble vibration system 5 to facilitate the production of sound by the treble vibration system 5.

The sound module 100 further includes a ventilation member 93 disposed at an opening of the channel near the treble vibration system 5, and the channel is filled with a sound absorbing material. By providing the sound absorbing material, the air compressible space corresponding to the high pitch diaphragm 51 is further improved.

In this embodiment, the air-permeable member 93 is an air-permeable net, the sound-absorbing material is sound-absorbing particles, and the diameter of the sound-absorbing particles is larger than the pore diameter of the air-permeable net. So as to realize that the ventilation part 93 has ventilation function and simultaneously avoid the noise elimination powder from leaking into the high-sound rear cavity 54 to influence the sound quality.

Still further, the treble vibration system 5 includes a treble diaphragm 51 and a treble voice coil 53 supporting the treble diaphragm 51 to vibrate, the second magnetic conductive portion 353 and the magnetic steel assembly 33 are spaced apart from each other to form a second magnetic gap 34, and the treble voice coil 53 is inserted into the second magnetic gap 34. Form second magnetic conduction portion 353 to keeping away from the direction arch of bass vibrating diaphragm 71 through first magnetic conduction portion 351 to make second magnetic conduction portion 353 can with the interval setting between the magnetic steel assembly 33, again because first magnetic conduction portion 351 and second magnetic conduction portion 353 have the magnetic conduction effect, make and form second magnetic gap 34 between second magnetic conduction portion 353 and the magnetic steel assembly 33, thereby high pitch voice coil 53 inserts second magnetic gap 34, can drive high pitch vibrating diaphragm 51 vibration sound production under the circumstances that high pitch voice coil 53 passes through the electricity. Of course, in other embodiments, the magnetic gap for inserting the high-pitch voice coil 53 can be formed by arranging other structures of magnetic steel and/or magnetic conductive plates.

Further, the second magnetic conduction part 353 includes a top wall 3531 spaced apart from the high-pitched diaphragm 51, and a magnetic conduction wall 3533 extending from the first magnetic conduction part 351 toward the high-pitched diaphragm 51, the magnetic conduction wall 3533 forms a channel, the top wall 3531 extends from the magnetic conduction wall 3533 toward a central axis of the channel, and an edge of the air-permeable member 93 is connected to the top wall 3531. The magnetic conductive wall 3533 is spaced apart from the main magnetic steel 331 and forms a second magnetic gap 34. By providing the top wall 3531, the air permeable member 93 is easily installed.

Referring to fig. 5, the magnetic steel assembly 33 includes a main magnetic steel 331 and a side magnetic steel 333 forming a first magnetic gap 32, a first magnetic conductive portion 351 is attached to the main magnetic steel 331, the bass vibration system 7 includes a bass diaphragm 71 and a bass voice coil 73 supporting the bass diaphragm 71 to vibrate, and the bass voice coil 73 is inserted into the first magnetic gap 32. The first magnetic conduction part 351 is attached to the main magnetic steel 331, and the main magnetic steel 331 and the side magnetic steel 333 are arranged at intervals at the same time, so that the magnetic steel assembly 33 can form a first magnetic gap 32 for inserting the bass voice coil 73 through the main magnetic steel 331 and the side magnetic steel 333, and the second magnetic conduction part 353, the main magnetic steel 331 and the side magnetic steel 333 are sequentially arranged at intervals, so that the size of the magnetic circuit system 3 is reduced on the basis of respectively forming the first magnetic gap 32 and the second magnetic gap 34.

Further, the magnetic circuit system 3 further includes a second washer 37 disposed on the side magnetic steel 333, and the first washer 35 and the second washer 37 are disposed on one side of the magnetic steel assembly 33 close to the bass diaphragm 71 and are respectively disposed on two opposite sides of the bass voice coil 73. That is, in the present embodiment, the magnetic circuit system 3 is provided with the first washer 35 and the second washer 37 at an end close to the bass diaphragm 71, so that the magnetic field of the bass voice coil 73 can be adjusted through the first washer 35 and the second washer 37.

Referring to fig. 6, the bass diaphragm 71 includes a bass main portion 711, a bass bending ring portion 713, and a bass fixing portion 715, which are sequentially connected from inside to outside, the bass fixing portion 715 is fixed on the fixing ring 135, and the second washer 37 is provided with an avoiding groove 372 corresponding to the bass bending ring portion 713. The low-pitched broken ring portion 713 may be vibrated in a space increased by providing the avoiding groove 372.

The magnetic circuit system 3 further includes a third washer 39 disposed on one side of the magnetic steel assembly 33 close to the high-pitch diaphragm 51, one end of the third washer 39 is disposed on the main magnetic steel 331, and the other end is disposed on the side magnetic steel 333. I.e. the magnetic field in which the treble voice coil 53 is located can be further adjusted by means of the third washer 39.

In one embodiment, in order to better make the bass vibration system 7 and the treble vibration system 5 share the same magnetic circuit system 3, the bass vibration system 7, the treble vibration system 5 and the first washer 35 are coaxially arranged.

In the embodiment shown in fig. 1 to 5, the housing 1 includes an upper shell 11 and a lower shell 13, the lower shell 13 includes a bottom plate 131, a side wall 133 disposed on the bottom plate 131, and a fixing ring 135 disposed on the side wall 133, the upper shell 11 is covered on the fixing ring 135, and the edge of the bass diaphragm 71 is disposed between the fixing ring 135 and the upper shell 11. Install on lateral wall 133 through setting up solid fixed ring 135 for bottom plate 131 assembles with treble vibration system 5, and solid fixed ring 135 assembles simultaneously with bass vibration system 7, makes things convenient for sound module 100 production. The lower case 13 further includes a back cavity cover 137 disposed on the side wall 133, the back cavity cover 137, the side wall 133 and the bottom plate 131 form a low-pitch sound cavity 72, the low-pitch vibration film 71, the fixing ring 135, the first washer 35 and the sealing member 31 enclose a low-pitch sound cavity 74, and the low-pitch sound cavity 72 is communicated with the low-pitch sound cavity 74. In another embodiment, a mounting port is opened on the bottom plate 131 to communicate with the bass tuning cavity 72, and a passive diaphragm 91 is disposed at the mounting port, so that when the bass diaphragm 71 vibrates, the gas in the bass rear cavity 74 and the bass tuning cavity 72 is compressed or increased, and the passive diaphragm 91 vibrates together, so that the volume of the bass tuning cavity 72 can be adjusted through the passive diaphragm 91, and the sound effect of the bass vibration system 7 is improved.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A sounding module is characterized by comprising a shell with an accommodating space, and a magnetic circuit system, a high-pitch vibration system and a low-pitch vibration system which are arranged in the accommodating space, wherein the magnetic circuit system comprises a sealing element, a magnetic steel assembly and a first washer attached to the magnetic steel assembly;

bass vibration system with treble vibration system branch is located magnetic circuit's relative both sides, first china is located including the subsides first magnetic conduction portion on the magnet steel components with certainly first magnetic conduction portion is to keeping away from the bellied second magnetic conduction portion of bass vibration system direction, second magnetic conduction portion forms both ends difference opening orientation bass vibration system with treble vibration system's passageway, the sealing member shutoff the passageway is close to bass vibration system's opening part, treble vibration system with form the high pitch back cavity between the magnetic circuit, second magnetic conduction portion with the sealing member encloses into the intercommunication the high pitch sound chamber in high pitch back cavity.

2. The sound generating module of claim 1, further comprising a ventilation member disposed at the opening of the channel near the treble vibration system, wherein the channel is filled with a sound absorbing material.

3. The acoustic module of claim 2, wherein the air permeable member is an air permeable mesh, the sound absorbing material is sound absorbing particles, and the sound absorbing particles have a diameter larger than the pore size of the air permeable mesh.

4. The sound module of claim 2, wherein the treble vibration system includes a treble diaphragm and a treble voice coil for supporting the treble diaphragm to vibrate, the second magnetic conductive portion and the magnetic steel assembly are spaced apart to form a second magnetic gap, and the treble voice coil is inserted into the second magnetic gap.

5. The acoustic module of claim 4, wherein the second magnetic conductive portion includes a top wall spaced apart from the tweeter diaphragm and a magnetic conductive wall extending from the first magnetic conductive portion in a direction toward the tweeter diaphragm, the magnetic conductive wall forming the channel, the top wall extending from the magnetic conductive wall in a direction toward a central axis of the channel, and an edge of the air-permeable member being connected to the top wall.

6. The acoustic module of claim 4, wherein the magnetic steel assembly comprises a main magnetic steel and a side magnetic steel forming a first magnetic gap, the first magnetic conductive portion is attached to the main magnetic steel, the bass vibration system comprises a bass diaphragm and a bass voice coil supporting the bass diaphragm to vibrate, and the bass voice coil is inserted into the first magnetic gap.

7. The acoustic module of claim 6, wherein the magnetic circuit further comprises a second washer disposed on the edge magnetic steel, and the first washer and the second washer are disposed on one side of the magnetic steel assembly close to the bass diaphragm and on two opposite sides of the bass voice coil.

8. The sound production module of claim 7, wherein the bass diaphragm includes a bass main body portion, a bass ring portion and a bass fixing portion, which are sequentially connected from inside to outside, and the second washer is provided with an avoiding groove corresponding to the bass ring portion.

9. The sound production module of claim 6, wherein the magnetic circuit further comprises a third washer disposed on a side of the magnetic steel assembly close to the high-pitch diaphragm, one end of the third washer is disposed on the main magnetic steel, and the other end of the third washer is disposed on the side magnetic steel.

10. The sound generation module of any one of claims 1 to 9, wherein the bass vibration system, the treble vibration system and the first washer are coaxially arranged.