CN111836176B

CN111836176B - Sound production assembly and electronic equipment

Info

Publication number: CN111836176B
Application number: CN202010623160.7A
Authority: CN
Inventors: 郑兵华; 庞军宁; 董志永
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2022-09-06
Anticipated expiration: 2040-06-30
Also published as: CN111836176A; WO2022000995A1

Abstract

The embodiment of the application provides a sound production subassembly and electronic equipment, this sound production subassembly includes casing, magnetic circuit component, vibrating diaphragm subassembly and vibration subassembly, magnetic circuit component with casing fixed connection, be provided with the magnetic gap in the magnetic circuit component. The periphery of the diaphragm component is connected with the shell to form an accommodating cavity; the vibration assembly is arranged in the accommodating cavity and comprises a voice coil assembly, a supporting framework and a centering support sheet, and the voice coil assembly comprises a leading-out wire; the top of the support framework is connected with the vibrating diaphragm assembly, and a bulge connected to the voice coil assembly is arranged on the support framework; the inboard of centering branch piece with support chassis is connected, the outside of centering branch piece extends to the casing, the lead-out wire is in the arch is in with centering branch piece. The sound production subassembly that this application embodiment provided passes through the arch gives the lead-out wire provides stable support, has improved the sound production quality of sound production subassembly.

Description

Sound production assembly and electronic equipment

Technical Field

The application relates to the technical field of electroacoustic conversion, specifically, this application relates to a sound production subassembly and electronic equipment.

Background

With the continuous update and upgrade of electronic devices, the number of intelligent devices is increasing. Taking a mobile phone as an example, in order to obtain a high-quality sound generating function, a sound generating device for a user to play sound is widely applied to smart devices such as a mobile phone.

The sound production device generally comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system for driving the vibration system to vibrate, wherein the vibration system generally comprises a vibrating diaphragm fixed on the basin frame, a voice coil for driving the vibrating diaphragm to vibrate and a supporting framework arranged on the periphery of the voice coil. The traditional sound production device directly wears the lead-out wire of voice coil loudspeaker voice coil on supporting the skeleton, must need carry out the setting of following the line radian to the lead-out wire between voice coil loudspeaker voice coil and the supporting the skeleton like this, leads to the length of lead-out wire to be difficult to control. Moreover, the position of the lead-out wire is not fixed, so that the sounding quality of the sounding device is reduced.

Disclosure of Invention

The embodiment of the application provides a sound production subassembly and electronic equipment to solve the problem that the sound production quality is low of current sound production subassembly.

In order to solve the above problem, the embodiments of the present application adopt the following technical solutions:

in a first aspect, an embodiment of the present application provides a sound generating assembly, including:

the magnetic circuit component is fixedly connected with the shell, and a magnetic gap is arranged in the magnetic circuit component;

the periphery of the vibrating diaphragm component is connected with the shell and forms an accommodating cavity;

the vibration assembly is arranged in the accommodating cavity and comprises a voice coil assembly, a supporting framework and a centering support piece, the top end of the voice coil assembly is connected with the vibrating diaphragm assembly and is suspended in the magnetic gap, and the voice coil assembly comprises a lead-out wire;

the top of the support framework is connected with the vibrating diaphragm assembly, and a bulge connected to the voice coil assembly is arranged on the support framework;

the centering branch piece surrounds the periphery of the supporting framework, the inner side of the centering branch piece is connected with the supporting framework, the outer side of the centering branch piece extends to the shell, and the outgoing line is attached to the protrusion and the centering branch piece.

Optionally, the support frame surrounds the voice coil assembly, the number of the protrusions is two, and the two protrusions are oppositely arranged on the inner side of the support frame.

Optionally, the support armature is disposed coaxially with the voice coil assembly.

Optionally, the material of the supporting framework is plastic.

Optionally, the magnetic circuit assembly includes a U-shaped magnet and a central magnet fixedly disposed on the U-shaped magnet, the central magnet and a side wall of the U-shaped magnet forming the magnetic gap therebetween.

Optionally, a first gap is reserved between the support framework and the voice coil assembly, the side wall of the U-shaped magnet is arranged in the first gap, and a groove matched with the protrusion in a nested mode is formed in the side wall of the U-shaped magnet.

Optionally, the voice coil assembly comprises a first voice coil framework, a second voice coil framework and a coil, the second voice coil framework is sleeved on the periphery of the first voice coil framework, and the coil is arranged between the first voice coil framework and the second voice coil framework.

Optionally, a tin foil is attached to a position on the outer peripheral side of the second voice coil bobbin, which is close to the protrusion, and the lead wire and the coil are communicated by the tin foil.

Optionally, the vibrating diaphragm subassembly includes the vibrating diaphragm, the vibrating diaphragm middle part is provided with first logical groove, the top of first voice coil loudspeaker voice coil skeleton with the inside wall in first logical groove is connected.

Optionally, a second through groove is formed in the middle of the shell, and the U-shaped magnet penetrates through the second through groove and is connected with the inner side wall of the second through groove.

In a second aspect, an embodiment of the present application provides an electronic device, including the sound emitting assembly of the first aspect.

The technical scheme adopted by the embodiment of the application can achieve the following beneficial effects:

the embodiment of the application provides a sound production subassembly, including casing, magnetic circuit component, vibrating diaphragm subassembly and vibration subassembly, magnetic circuit component with casing fixed connection, be provided with the magnetic gap in the magnetic circuit component. The periphery of the vibrating diaphragm component is connected with the shell to form an accommodating cavity; the vibration subassembly set up in hold the intracavity, the vibration subassembly includes voice coil loudspeaker voice coil subassembly, supporting framework and centering piece, the voice coil loudspeaker voice coil subassembly includes the lead-out wire, be provided with on the supporting framework and be connected to the arch of voice coil loudspeaker voice coil subassembly, the lead-out wire is attached to on arch and the centering piece. The sound production subassembly that this application embodiment provided passes through the arch gives the lead-out wire provides stable support, has improved sound production subassembly's sound production quality.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a cross-sectional view of a sound emitting assembly provided in an embodiment of the present application;

fig. 2 is a cross-sectional view of a sound emitting assembly provided in an embodiment of the present application;

fig. 3 is a disassembled structure diagram of a sound production assembly provided in the embodiment of the present application;

FIG. 4 is an enlarged view of a portion of FIG. 2;

fig. 5 is a schematic structural diagram of a supporting framework of a sound generating assembly according to an embodiment of the present application, where fig. 5a is a top view of the supporting framework, and fig. 5b is a side view of the supporting framework.

Description of reference numerals:

1-voice coil assembly, 101-lead wire; 102-a first voice coil former; 103-a second voice coil former; 104-a coil; 2-supporting the framework; 201-bump; 3-centering the supporting sheet; 4-a U-shaped magnet; 401-grooves; 402-an annular groove; 5-a central magnet; 6-vibrating diaphragm; 601-a first through slot; 7-a housing; 701-a second through groove; 8-a connection terminal; 9-a dust cap; 10-folding ring; 11-washer; 12-a secondary magnet; 13-shim.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, 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 application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.

Technical solutions disclosed in the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 5, an embodiment of the present application provides a sound emitting assembly, including:

the vibration isolator comprises a shell 7, a magnetic circuit system, a vibrating diaphragm assembly and a vibration assembly, wherein the magnetic circuit assembly is fixedly connected with the shell 7, and a magnetic gap is formed in the magnetic circuit assembly.

The periphery of the vibrating diaphragm assembly is connected with the shell 7 to form an accommodating cavity, the vibrating assembly is arranged in the accommodating cavity and comprises a voice coil assembly 1, a supporting framework 2 and a centering disk 3, the top end of the voice coil assembly 1 is connected with the vibrating diaphragm assembly and suspended in the magnetic gap, the voice coil assembly 1 comprises a lead-out wire 101, and the lead-out wire 101 extends from the voice coil assembly 1 to the outside of the sound production assembly and is used for providing an electric signal for the voice coil assembly 1; the top of the support framework 2 is connected with the vibrating diaphragm component, and a bulge 201 connected to the voice coil component 1 is arranged on the support framework 2; centering branch piece 3 encircles the periphery of supporting framework 2, centering branch piece 3's inboard with supporting framework 2 connects, centering branch piece 3's the outside extends to casing 7, lead-out wire 101 is attached to on arch 201 and the centering branch piece 3, and follow stretch out on the casing 7.

The sound production subassembly that this application embodiment provided passes through the arch 201 that sets up on the supporting framework 2, protruding 201 can prevent on the one hand voice coil assembly 1 takes place the skew when vibrating from top to bottom, provides for the accurate route of voice coil assembly 1 vibration, on the other hand can with voice coil assembly 1 and centering disk 3 are connected, make lead-out wire 101 can follow smoothly protruding 201 with centering disk 3 extends to the sound production subassembly is outside, gives lead-out wire 101 provides stable support, has reduced lead-out wire 101 has improved owing to rock the risk that produces the distortion the sound production quality of sound production subassembly.

Optionally, referring to fig. 1, 2 and 3, a connection terminal 8 is disposed on the housing 7, and the connection terminal 8 is used for being connected to the outlet 101 extending from the housing 7 and fixing an end of the outlet 101, so that the sound generating assembly is stably connected to an external power source.

Optionally, referring to fig. 1 and 5, the support frame 2 surrounds the voice coil assembly 1, the number of the protrusions 201 is two, and the two protrusions 201 are oppositely disposed on the inner side of the support frame 2.

Specifically, fig. 5a is a top view of the support frame 2, and fig. 5b is a side view of the support frame 2, and it can be seen from the figure that after two protrusions 201 oppositely arranged on the inner side of the support frame 2 are connected with the outer peripheral side of the voice coil assembly 1, the voice coil assembly 1 can be effectively prevented from being deflected when vibrating up and down; in addition, lead-out wire 101 can paste the dress and follow on the surface of protruding 201 centering branch piece 3 extends to the outside of casing 7, avoided traditional sound production subassembly's lead-out wire unable fixed problem between support skeleton and voice coil loudspeaker voice coil subassembly, improved lead-out wire 101's connection stability. The number of the protrusions 201 may also be three, four, five or more, which is not limited in this embodiment of the present application.

Alternatively, referring to fig. 1 and 2, the support frame 2 is disposed coaxially with the voice coil assembly 1.

Specifically, support chassis 2 with voice coil loudspeaker voice coil subassembly 1's top all with the vibrating diaphragm subassembly is connected, support chassis 2 with after voice coil loudspeaker voice coil subassembly 1 coaxial setting, support chassis 2 with the clearance distance of voice coil loudspeaker voice coil subassembly 1 week side can keep unanimous, support chassis 2 can give voice coil loudspeaker voice coil subassembly 1 plays fine supporting role at the in-process of upper and lower concentric vibration, effectively reduces the audio distortion that the vibration arouses.

Optionally, the support skeletonThe material 2 is plastic, specifically can be organic polymer materials such as PC, PVC, PS, PET or PMMA, and the like, and the materials have the characteristics of high strength and elasticity coefficient, high impact strength and wide use temperature range, and can meet the functions of supporting and assisting in vibration of the voice coil assembly 1. Specifically, when the supporting frame 2 is made of PC, a low-density PC black plastic material may be used, and the density is about 910kg/m ³ Is significantly lower than 1200kg/m of PC material ³ The flexibility of the voice coil assembly 1 to vibrate can be improved.

Alternatively, referring to fig. 1 and 2, the magnetic circuit assembly includes a U-shaped magnet 4 and a central magnet 5, and the U-shaped magnet 4 has a barrel-shaped structure with an open top end and a U-shaped cross-section. The central magnet 5 is fixedly arranged on the U-shaped magnet 4, and the magnetic gap is formed between the central magnet 5 and the side wall of the U-shaped magnet 4.

Specifically, the magnetic gap has a magnetic field therein, and the voice coil assembly 1 is suspended in the magnetic gap. Under the condition that the voice coil assembly 1 is electrified, an interaction force is generated between the voice coil assembly 1 and the magnetic field, and then the voice coil assembly 1 is driven to vibrate. And according to the current direction and the size of the voice coil assembly 1, the direction and the size of the interaction force between the voice coil assembly 1 and the magnetic field can be controlled, and the amplitude of the vibration direction of the voice coil assembly 1 can be flexibly controlled.

Optionally, referring to fig. 1 and fig. 2, a first gap is left between the support frame 2 and the voice coil assembly 1, a side wall of the U-shaped magnet 4 is disposed in the first gap, and a groove 401 that is in nested fit with the protrusion 201 is disposed on the side wall of the U-shaped magnet 4.

In addition, the magnetic circuit assembly further comprises a washer 11 and an auxiliary magnet 12 which are sequentially arranged at the top end of the central magnet 5, and the arrangement of the washer 11 and the auxiliary magnet 12 can further adjust the magnetic field direction and the magnetic field intensity in the magnetic gap. After the side wall of the U-shaped magnet 4 and the supporting framework 2 form a nested structure, namely the U-shaped magnet 4 can go deep into the vibration component of the sound production component, so that the thickness of the sound production component can be greatly reduced. Specifically, by taking a sounding component on a television product as an example, the whole thickness of the sounding component on a traditional television is 20-30mm, the whole thickness of the sounding component can be smaller than 15-20mm, the rated power can reach 30-40W, the linear unilateral stroke range is larger than 5mm, the sensitivity is larger than 85dB, the resonant frequency of the sounding component is lower, and the sounding quality of the sounding component is greatly improved.

Optionally, referring to fig. 1 and fig. 2, an annular groove 402 is disposed on the U-shaped magnet 4 at a position opposite to the magnetic gap, and the annular groove 402 may prevent the voice coil assembly 1 from directly contacting the U-shaped magnet 4 during vibration of the voice coil assembly 1, thereby increasing the vibration amplitude of the voice coil assembly 1.

Optionally, referring to fig. 4, the voice coil assembly 1 includes a first voice coil bobbin 102, a second voice coil bobbin 103, and a coil 104, where the second voice coil bobbin 103 is sleeved on the periphery of the first voice coil bobbin 102, and the coil 104 is disposed between the first voice coil bobbin 102 and the second voice coil bobbin 103. Specifically, the first voice coil bobbin 102 and the second voice coil bobbin 103 are generally made of an insulating material such as kraft paper, and the double-layer bobbin structure formed by the first voice coil bobbin 102 and the second voice coil bobbin 103 can well insulate and protect the coil 104.

Alternatively, referring to fig. 4, a tin foil is attached to a position on the outer circumferential side of the second voice coil bobbin 103 near the protrusion 201, and the tin foil connects the lead wire 101 and the coil 104. Specifically, on one hand, the tin foil can fix the end of the coil 104 led out from the double-layer framework, so as to avoid the coil 104 from shaking in the vibration process of the voice coil assembly 1; on the other hand, the lead wire 101 may be led out from the tin foil sheet, which not only communicates the lead wire 101 and the coil 104, but also provides support for the end of the lead wire 101.

Optionally, referring to fig. 1 and fig. 2, the diaphragm assembly includes a diaphragm 6, a first through groove 601 is disposed in the middle of the diaphragm 6, and a top end of the first voice coil bobbin 102 is connected to an inner side wall of the first through groove 601.

Specifically, in order to guarantee first voice coil skeleton 102 with simplify the technology of connecting on the basis of joint strength between the first logical groove 601, the top of first voice coil skeleton 102 can through glue with the inside wall of first logical groove 601 bonds, can reduce like this the motion of cutting apart that arouses when 1 plane of voice coil assembly swings improves sound production assembly's low frequency sound production effect. In addition, in order to avoid external impurities from entering the casing 7 from the first through groove 601, a dust cap 9 may be disposed on a side of the first through groove 601 away from the voice coil assembly 1, and after the dust cap 9 covers the first through groove 601, normal operation of each component in the casing 7 may be well guaranteed.

Optionally, referring to fig. 1 and fig. 2, the diaphragm assembly further includes a corrugated rim 10, where the corrugated rim 10 is disposed on a circumference of the diaphragm 6 near an edge. The intensity of the corrugated rim 10 is high, so that the vibrating diaphragm 6 can be prevented from vibrating transversely while vibrating axially, and the resonant frequency of the sounding component is reduced.

Optionally, referring to fig. 1 and 2, a second through groove 701 is formed in the middle of the housing 7, and the U-shaped magnet 4 penetrates through the second through groove 701 and is connected to an inner side wall of the second through groove 701.

In particular, with reference to fig. 1, the diaphragm 6 and the housing 7 can provide a good support and protection for the vibrating assembly. In addition, vibrating diaphragm 6 with casing 7 junction still pastes and is equipped with gasket 13, gasket 13 is the annular setting, gasket 13's quantity can be two, two gasket 13 pastes the dress respectively and is in vibrating diaphragm 6 with the edge surface of casing 7 can improve vibrating diaphragm 6 with casing 7 joint strength's while, avoid vibrating diaphragm 6's edge takes place to warp.

The embodiment of the application also provides electronic equipment, which comprises the sound production assembly.

Specifically, electronic equipment still includes the mainboard, the mainboard with the sound production subassembly electricity is connected, the mainboard can provide the stable signal of telecommunication of voice coil loudspeaker voice coil subassembly 1 guarantees electronic equipment's normal sound production.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A sound emitting assembly, comprising:

the magnetic circuit component is fixedly connected with the shell (7), and a magnetic gap is arranged in the magnetic circuit component;

the periphery of the diaphragm component is connected with the shell (7) and forms an accommodating cavity;

the vibration assembly is arranged in the accommodating cavity and comprises a voice coil assembly (1), a supporting framework (2) and a centering support piece (3), the top end of the voice coil assembly (1) is connected with the vibrating diaphragm assembly and is suspended in the magnetic gap, and the voice coil assembly (1) comprises a leading-out wire (101);

the top of the support framework (2) is connected with the vibrating diaphragm component, and a bulge (201) connected to the voice coil component (1) is arranged on the support framework (2);

the centering branch piece (3) surrounds the periphery of the supporting framework (2), the inner side of the centering branch piece (3) is connected with the supporting framework (2), the outer side of the centering branch piece (3) extends to the shell, and the outgoing line (101) is attached to the protrusion (201) and the centering branch piece (3);

the magnetic circuit component comprises a U-shaped magnet (4), a first gap is reserved between the support framework (2) and the voice coil component (1), the side wall of the U-shaped magnet (4) is arranged in the first gap, and a groove (401) which is in nested fit with the protrusion (201) is formed in the side wall of the U-shaped magnet (4);

the voice coil assembly (1) comprises a first voice coil framework (102), a second voice coil framework (103) and a coil (104), wherein the second voice coil framework (103) is sleeved on the periphery of the first voice coil framework (102), the coil (104) is arranged between the first voice coil framework (102) and the second voice coil framework (103), a tin foil is attached to the position, close to the protrusion (201), of the outer peripheral side of the second voice coil framework (103), and the lead-out wire (101) is communicated with the coil (104) through the tin foil;

the bulges (201) are oppositely arranged on the inner side of the supporting framework (2).

2. The sound generating assembly according to claim 1, wherein the support armature (2) surrounds the voice coil assembly (1), and the number of the protrusions (201) is two.

3. The sound generating assembly according to claim 2, characterized in that the support armature (2) is arranged coaxially with the voice coil assembly (1).

4. The sound generating assembly according to claim 1, wherein the supporting framework (2) is made of plastic.

5. The sound generating assembly according to claim 1, wherein the magnetic circuit assembly comprises a central magnet (5), the central magnet (5) being fixedly arranged on the U-shaped magnet (4), the magnetic gap being formed between the central magnet (5) and the side wall of the U-shaped magnet (4).

6. The sounding assembly of claim 1, wherein the diaphragm assembly comprises a diaphragm (6), a first through groove (601) is formed in the middle of the diaphragm (6), and the top end of the first voice coil bobbin (102) is connected with the inner side wall of the first through groove (601).

7. The sounding assembly according to claim 1, characterized in that a second through slot (701) is provided in the middle of said casing (7), and said U-shaped magnet (4) passes through said second through slot (701) and is connected with the inner side wall of said second through slot (701).

8. An electronic device comprising the sound emitting assembly of any one of claims 1-7.