CN109982221B - Sound generating device and electronic product - Google Patents
Sound generating device and electronic product Download PDFInfo
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- CN109982221B CN109982221B CN201910367324.1A CN201910367324A CN109982221B CN 109982221 B CN109982221 B CN 109982221B CN 201910367324 A CN201910367324 A CN 201910367324A CN 109982221 B CN109982221 B CN 109982221B
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- 238000007789 sealing Methods 0.000 claims abstract description 53
- 238000009434 installation Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims description 38
- 239000003566 sealing material Substances 0.000 claims description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 238000013461 design Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000007547 defect Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 239000000499 gel Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Abstract
The invention discloses a sound generating device and an electronic product, wherein the sound generating device comprises a shell, a sound generating single body, a reset piece and a movable sealing matching structure, the shell is provided with an installation cavity, the sound generating single body comprises a vibration component and a magnetic circuit component, the sound generating single body is arranged in the installation cavity and seals and blocks the installation cavity to form a front sound cavity and a rear sound cavity, the reset piece is arranged in the shell and is used for elastically resetting the vibration component, the vibration component is movably matched with the movable sealing matching structure, and the vibration component is kept in sealing fit with the sealing matching structure in the vibration process.
Description
Technical Field
The present disclosure relates to acoustic devices, and particularly to a sound generating device and an electronic product.
Background
Various electronic products such as mobile phones, tablet computers and portable computers generally use a sound generating device technology as a main means of sound generation, along with the trend of miniaturization and light thinning of electronic products, sound generating devices are also developed towards smaller and thinner directions, and due to small volume and thin thickness, the existing small sound generating devices have completely different designs from the traditional large sound generating devices, and as such, the sound radiation and vibration performances of the small sound generating devices are quite different from those of the traditional large sound generating devices:
firstly, the vibration stroke is far smaller than that of a large sound generating device;
secondly, in order to adapt to the ultrathin design, an axisymmetric positive sound emitting mode and an asymmetric side sound emitting mode are not adopted, and become the main stream;
Thirdly, as shown in fig. 1 (fig. 1 is a schematic diagram of the sound generating device before the improvement of the present design), in order to avoid the front-back acoustic short circuit and provide restoring force for the vibration system 1', a flexible folding ring 2' is introduced into the design of the sound generating device 100', and two rubber bands are generally reserved in the folding ring 2', the outer rubber band 21 'and the sound generating device supporting structure 100a' are mounted in a sealing manner, and the inner rubber band 22 'is mounted in a sealing manner with the rigid area of the vibration system 1';
However, the flexible ring is made of flexible material, and in order to further improve the low-frequency performance, a large-span ring structure is generally adopted, for example, the cross-sectional span is greater than 0.8mm, so that the ring also partially participates in acoustic radiation, and the following technical defects are caused due to such requirements of the flexible ring:
Firstly, due to the limitation of the material and the structure of the folded ring, the linear vibration stroke is small, and the folded ring area is stretched due to larger amplitude, so that the pushing to larger amplitude is limited;
Secondly, due to the limitation of a manufacturing process, asymmetric sounding load can cause asymmetric stress to the vibration system, so that the polarization phenomenon is obvious;
third, the folded ring has larger area, the polarization can be obviously aggravated, and the acoustic radiation participated in by the folded ring part also presents obvious nonlinearity due to the nonlinearity of the deformation of the folded ring.
Disclosure of Invention
The invention mainly aims to provide a sound generating device and an electronic product, and aims to provide a novel sealing structure and a resetting mode of a vibration assembly so as to cancel a flexible folding ring and correspondingly solve the technical defects caused by the flexible folding ring.
In order to achieve the above object, the present invention provides a sound generating apparatus, comprising:
A housing having a mounting cavity;
The sound production unit comprises a vibration component and a magnetic circuit component, and is arranged in the installation cavity and seals and blocks the installation cavity to form a front sound cavity and a rear sound cavity;
the resetting piece is arranged in the shell and is used for elastically resetting the vibration assembly; and
The movable sealing fit structure is positioned in the mounting cavity;
Wherein, the vibration subassembly is movable with the movable seal cooperation structure cooperates, and the vibration subassembly keeps with the sealed cooperation of seal cooperation structure in the vibration process.
Optionally, the reset piece includes a centering pad, the centering pad includes:
A main body outer frame;
The plurality of elastic support pieces are arranged on the inner side of the main body outer frame, one ends of the plurality of elastic support pieces are connected with the main body outer frame, and the other ends of the plurality of elastic support pieces are used for elastically supporting the vibration assembly.
Optionally, the plurality of elastic supporting sheets are distributed on each side edge of the main body outer frame; and/or the number of the groups of groups,
Each elastic supporting piece comprises a main body section and a supporting section, one end of the main body section is connected with the inner side of the main body outer frame and extends along one side edge of the main body outer frame, one end of the supporting section is connected with the other end of the main body section, and the other end of the supporting section extends towards the middle of the surrounding area of the main body outer frame and is used for elastically supporting the vibration component; and/or the number of the groups of groups,
The centering support piece further comprises a support inner frame, wherein the support inner frame is arranged on the inner side of the main body outer frame and is connected with the main body outer frame through the elastic support pieces, and the support inner frame is connected with the vibration assembly.
Optionally, the vibration component comprises a reinforcing part and a voice coil installed at one side of the reinforcing part facing the rear acoustic cavity;
and the connecting part for connecting the centering support piece and the vibration assembly is clamped between the voice coil and the reinforcing part.
Optionally, the movable seal mating structure includes:
An annular groove formed on the magnetic circuit assembly; and
A first sealing material disposed within the annular groove;
The end of the vibration component facing the rear acoustic cavity is movably matched with the annular groove and is sealed by the sealing material.
Optionally, the annular groove is formed in a magnetic gap of the magnetic circuit assembly; and/or the number of the groups of groups,
The first sealing material is a magnetic liquid, a silica gel or a sealing liquid which can be limited in the annular groove; and/or the number of the groups of groups,
The vibration assembly comprises a reinforcing part and a voice coil arranged on one side of the reinforcing part, which faces the rear acoustic cavity, and the voice coil is matched with the annular groove.
Optionally, the annular groove is formed in a magnetic gap of the magnetic circuit assembly; and/or the number of the groups of groups,
The first sealing material is a magnetic liquid, a silica gel or a sealing liquid which can be limited in the annular groove; and/or the number of the groups of groups,
The vibration assembly comprises a reinforcing part and a voice coil arranged on one side of the reinforcing part, which faces the rear acoustic cavity, and the voice coil is matched with the annular groove.
Optionally, the movable seal mating structure includes:
A peripheral ring groove which is arranged in the shell and is annularly arranged at the periphery of the vibration component; and
A second sealing material disposed in the peripheral ring groove;
The peripheral side part of the vibration component stretches into the peripheral annular groove and is movable in the peripheral annular groove, and the second sealing material is sealed with the vibration component.
Optionally, the vibration component comprises a reinforcing part and a voice coil installed on one side of the reinforcing part facing the rear acoustic cavity, and the peripheral side part of the reinforcing part is matched with the peripheral ring groove; and/or the number of the groups of groups,
The second sealing material is a sealing gel, a silicone gel, or a sealing liquid that can be confined in the peripheral ring groove.
Optionally, a peripheral fixed sealing structure is further formed in the mounting cavity, and the sounding monomer is at the peripheral part of the vibration assembly and is in sealing connection with the inner side wall of the shell so as to form the peripheral fixed sealing structure; and/or the number of the groups of groups,
The central opening of the magnetic circuit assembly is arranged; and/or the number of the groups of groups,
The shell is internally provided with a cavity communicated with the rear acoustic cavity at least at one periphery of the rear acoustic cavity.
The invention also provides an electronic product, which comprises a sound generating device, wherein the sound generating device comprises:
A housing having a mounting cavity;
The sound production unit comprises a vibration component and a magnetic circuit component, and is arranged in the installation cavity and seals and blocks the installation cavity to form a front sound cavity and a rear sound cavity;
the resetting piece is arranged in the shell and is used for elastically resetting the vibration assembly; and
The movable sealing fit structure is positioned in the mounting cavity;
Wherein, the vibration subassembly is movable with the movable seal cooperation structure cooperates, and the vibration subassembly keeps with the sealed cooperation of seal cooperation structure in the vibration process.
According to the technical scheme, the movable sealing fit structure is arranged, the vibration assembly is movably matched with the movable sealing fit structure, and the vibration assembly is kept in sealing fit with the sealing fit structure in the vibration process, so that the front acoustic cavity and the rear acoustic cavity are prevented from being communicated to cause acoustic short circuit, and the reset piece is further arranged to reset the vibration assembly, and further the flexible folding ring is not required to be arranged, meanwhile, the sealing at the movable installation position of the vibration assembly is realized, and the reset force is also provided, so that the technical defects caused by the arrangement of the flexible folding ring can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a sound emitting device provided by the present invention prior to modification;
FIG. 2 is a schematic diagram of an embodiment of a sound generating apparatus according to the present invention;
FIG. 3 is a schematic front view of the magnetic circuit assembly of FIG. 2;
FIG. 4 is a schematic front view of the sound emitting unit of FIG. 2;
FIG. 5 is a schematic diagram of another embodiment of a sound emitting device according to the present invention;
Fig. 6 is a schematic diagram of a sound generating device according to another embodiment of the present invention.
Reference numerals illustrate:
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a sound generating device and an electronic product with the sound generating device, wherein the electronic product can be, but is not limited to, a mobile phone, a television, a computer and the like, and particularly, the electronic product is an electronic product which is required to be light and thin for the product size, such as a smart phone, a tablet personal computer, a notebook computer and the like.
In the prior art, a flexible ring is usually provided, which provides a restoring force for the vibration assembly, and on the other hand, the flexible ring also plays a role in sealing the movable mounting position of the vibration assembly, so as to avoid communication between the front acoustic cavity and the rear acoustic cavity of the vibration assembly at the movable mounting position of the vibration assembly, however, the flexible ring is limited by the material and the size of the flexible ring, and the flexible ring brings a series of technical defects (the description is omitted herein before)
In view of the above, the present invention proposes a sound generating apparatus that eliminates the provision of the folded ring, but also achieves sealing at the movable mounting place of the vibration assembly, and is capable of providing a restoring force to the vibration assembly. Fig. 2 to fig. 4 are schematic structural diagrams of an embodiment of a sound generating device provided by the present invention, and fig. 5 and fig. 6 are schematic structural diagrams of another two embodiments of a sound generating device provided by the present invention.
Referring to fig. 2 to 4, in an embodiment of the invention, the sound generating device 100 includes a housing 1, a sound generating unit 2, a reset member 3, and a movable seal assembly. The housing 1 has a mounting cavity 1a, and in particular, in the embodiment of the present invention, the housing 1 is formed by butt-assembling the front case 11 and the rear case 12, and it is apparent that the present design is not limited thereto, and the housing 1 may be formed in other forms.
The sounding unit 2 comprises a vibration component 21 and a magnetic circuit component 22, and the sounding unit 2 is arranged in the installation cavity 1a and seals and blocks the installation cavity 1a to form a front sound cavity 11a and a rear sound cavity 12a, so that the communication of the front sound cavity 11a and the rear sound cavity 12a can be avoided, and further generated sound waves are mutually influenced to generate the phenomenon of 'sound short circuit'.
The reset piece 3 is arranged in the shell 1 and is used for elastically resetting the vibration component 21, the specific structure and the form of the reset piece 3 are not limited, and the reset piece 3 is not used for bearing the sealing function of the vibration component 21 at the movable installation position, so that the reset piece 3 can be arranged more flexibly, and the material is not subjected to excessive limitation.
Wherein the vibration assembly 21 is movably engaged with the movable seal engagement structure, and the vibration assembly 21 is maintained in sealing engagement with the seal engagement structure during vibration.
When the sound generating device 100 works, after the sound generating unit 2 is added with an electric signal, the vibration assembly 21 vibrates, because the vibration assembly 21 can move in the vibration direction by being movably matched with the movable sealing matching structure, and the vibration assembly 21 keeps being in sealing matching with the sealing matching structure in the vibration process, so that the front sound cavity 11a and the rear sound cavity 12a are prevented from being communicated to cause sound short circuit, and a reset piece 3 is further arranged to reset the vibration assembly 21, further, the flexible folding ring is not required to be arranged, meanwhile, the sealing of the movable mounting part of the vibration assembly 21 is realized, and the reset force is also provided, so that the technical defect caused by the flexible folding ring is avoided.
The vibration assembly 21 includes a reinforcing portion 211 and a voice coil 212 mounted on a side of the reinforcing portion 211 facing the rear acoustic chamber 12a, wherein the voice coil 212 drives the reinforcing portion 211 to vibrate together in a magnetic field generated by the magnetic circuit assembly 22 after being energized.
In the embodiment of the present invention, the restoring member 3 includes a centering support 3a, and the material of the centering support 3a may be, but is not limited to, a metal material. The centering support 3a includes a main body frame 31 and a plurality of elastic support pieces 32, and the specific shape of the main body frame 31 is not limited, specifically, in the embodiment of the present invention, the main body frame 31 is square. The plurality of elastic support pieces 32 are disposed on the inner side of the main body outer frame 31, one ends of the plurality of elastic support pieces 32 are connected with the main body outer frame 31 (specifically, the plurality of elastic support pieces 32 and the main body outer frame 31 are integrally formed), the other ends of the plurality of elastic support pieces 32 elastically support the vibration assembly 21, and can be directly connected with the vibration assembly 21, or can be indirectly connected with the vibration assembly 21 through other structures, and the manner of connecting the plurality of elastic support pieces 32 and the vibration assembly 21 (directly or indirectly) is not limited, and in the embodiment of the invention, the centering support pieces 3a provide a restoring force for the vibration assembly 21, so that the plurality of elastic support pieces 32 have better strength in the circumferential direction and limit the vibration assembly 21 in the circumferential direction together, so as to avoid the lateral movement of the vibration assembly 21, so that the problem of polarization can occur, and meanwhile, the centering support pieces 3a have better elasticity, so as to better realize the elastic restoring of the vibration assembly 21.
Further, in the embodiment of the present invention, the plurality of elastic support pieces 32 are distributed on each side of the main body outer frame 31, specifically, in the embodiment of the present invention, the number of the elastic support pieces 32 is 4, and the number of the elastic support pieces 32 is 4 on four sides of the main body outer frame 31, so that the vibration assembly 21 is limited in each direction of the circumferential direction of the vibration assembly 21 to further enhance the stability of the vibration assembly 21 in the circumferential direction.
Furthermore, in the embodiment of the present invention, each of the elastic supporting plates 32 includes a main body section 321 and a supporting section 322, wherein one end of the main body section 321 is connected to the inner side of the main body frame 31 and extends along one side of the main body frame 31, one end of the supporting section 322 is connected to the other end of the main body section 321, and the other end extends toward the middle of the surrounding area of the main body frame 31, so as to elastically support the vibration assembly 21, i.e., directly or indirectly connect to the vibration assembly 21, and by extending the main body section 321 of the elastic supporting plate 32 along the corresponding side, the main body section 321 has a sufficiently large length dimension, so that the elasticity of the elastic supporting plate 32 can be improved.
When the plurality of elastic supporting pieces 32 are indirectly connected with the vibration assembly 21, the centering supporting piece 3a may further include a supporting inner frame (not shown), which is disposed on the inner side of the main body outer frame 31 and connected with the main body outer frame 32 through the plurality of elastic supporting pieces 32, and the supporting inner frame is connected with the vibration assembly 21, so that the stability of the vibration assembly 21 in the circumferential direction can be further improved through the connection of the supporting inner frame with the vibration assembly 21.
The connection manner of the centering support 3a and the vibration assembly 21 is not limited, and may be a connection portion (for example, free ends of the plurality of elastic support pieces 32 may be the support inner frame) where the centering support 3a and the vibration assembly 21 are connected, and the connection portion is sandwiched between the voice coil 212 and the voice coil 212, specifically, in an embodiment of the present invention, the free ends of the elastic support pieces 32 are sandwiched between the voice coil 212 and the reinforcing portion 211, and the voice coil 212 and the reinforcing portion 211 are adhered by an adhesive so as to fixedly connect the free ends of the elastic support pieces 32 with the reinforcing portion 211 and the voice coil 212, and obviously, the design is not limited thereto, and the three may be connected by other manners.
The movable seal fit structure provides a movable fit mounting of the vibration assembly 21 and needs to maintain tightness during movement of the vibration assembly 21, the specific implementation of the movable seal fit structure is not limited, and two different forms of embodiments of the movable seal fit structure are provided in embodiments of the present invention.
Referring to fig. 2, in an embodiment of the present invention, the movable seal matching structure includes an annular groove 41 and a first sealing material 42, the annular groove 41 is opened on the magnetic circuit assembly 22, the first sealing material 42 is disposed in the annular groove 41, and an end of the vibration assembly 21 facing the rear acoustic cavity 12a is movably matched with the annular groove 41 and is sealed by the sealing material. By providing the annular groove 41 on the magnetic circuit assembly 22, so that the end of the vibration assembly 21 facing the rear acoustic cavity 12a is movably matched with the annular groove 41, and further providing a first sealing material in the annular groove 41, the sealing between the end of the vibration assembly 21 facing the rear acoustic cavity 12a and the annular groove 41 is realized, and the movable sealing matching structure is realized through a simple structure.
Further, in this embodiment, the annular groove 41 is formed in the magnetic path gap of the magnetic path assembly 22.
In addition, in this embodiment, the first sealing material 42 is a magnetic liquid, so that excessive resistance of the first sealing material 42 to the movement of the vibration assembly 21 is avoided, and meanwhile, the magnetic liquid can be well limited in the annular groove 41, so that the magnetic liquid is not easy to leak, although the design is not limited thereto, other materials can be used as the first sealing material 42, and silica gel with better elasticity, fluid state sealing glue, and the like can be used.
In addition, in the embodiment of the present invention, the voice coil 212 is engaged with the annular groove 41 toward one end of the rear acoustic chamber 12a, the inner side or the outer side of the rear end of the voice coil 212 may be sealed with the annular groove 41 by the first sealing material 42, the inner side and the outer side of the one end of the voice coil 212 toward the rear acoustic chamber 12a may be sealed with the annular groove 41 by the first sealing material 42, it is obvious that the present invention is not limited thereto, the reinforcing portion 211 may be folded back a part, or other structures may be provided to engage with the annular groove 41.
It is obvious that in the case of the annular groove 42 being formed by a magnetic gap, the voice coil 212 protrudes into the magnetic gap so that the power of the vibration assembly 21 can be set sufficiently large, and in addition, in this case, if the first sealing material 42 is a magneto-hydraulic fluid, the first sealing material 42 can be well restricted by the magnetic circuit assembly 22, so that leakage from the annular groove 42 is avoided.
Fig. 4 and 5 provide other embodiments of the present invention, in which the movable seal mating structure includes a peripheral annular groove 51 and a second sealing material 52, the peripheral annular groove 41 is disposed on the inner structure of the housing 1 and is disposed around the periphery of the vibration assembly 21, particularly on the inner side wall of the housing 1, more particularly on the inner side wall of the front case 11. The second sealing material 52 is disposed in the peripheral ring groove 51, the peripheral side portion of the vibration assembly 21 protrudes into the peripheral ring groove 51, and is movable in the vibration direction in the peripheral ring groove 51, and the second sealing material 52 is sealed with the vibration assembly 21, so that the movable sealing engagement structure can be realized by another simple structure. Specifically, in the embodiment of the present invention, the peripheral side portion of the reinforcing portion 211 is fitted with the peripheral ring groove 51.
The specific material of the second sealing material 52 is not limited, and may be a sealing gel, a silicone gel, or a sealing liquid that can be confined in the peripheral ring groove 51.
In the embodiment of the present invention, referring to fig. 2, a peripheral fixed sealing structure 6 is further formed in the installation cavity 1a, and the generating device is connected between the peripheral portion of the vibration assembly 21 and the inner side wall of the housing 1 in a sealing manner to form the peripheral fixed sealing structure 6. Specifically, in the embodiment of the present invention, the magnetic circuit assembly 22 and the periphery of the centering support 3a are jointly in sealing contact with the inner wall of the housing 1 to form the peripheral fixed sealing structure 6, and obviously, the magnetic circuit assembly 22 may also be in sealing contact with the inner wall of the housing 1 to form the peripheral fixed sealing structure. It is evident that in the embodiment provided in fig. 5 and 6, the sealing structure may not be provided with the peripheral stationary sealing structure 6.
In the embodiment of the present invention, referring to fig. 2 and 5, the central opening of the magnetic circuit assembly 22 is configured such that the rear acoustic chamber 12a is in communication with the other part of the chamber 1b of the housing 1, so as to increase the volume of the cavity in communication with the rear acoustic chamber 12a, and further reduce the amplitude generated by the vibration of the rear acoustic chamber 12 a. Obviously, the magnetic circuit assembly 22 may also be provided without an opening, as shown in fig. 6.
Further, in the embodiment of the present invention, referring to fig. 2, 5 and 6, a cavity 1b communicating with the rear acoustic cavity 12a is disposed in the housing 1 at least on a peripheral side of the rear acoustic cavity 12a, specifically, the cavities 1b are disposed in the housing 1 at both sides of the mounting cavity 1a, so as to further increase the volume of the cavity 1b communicating with the rear acoustic cavity 12a, so as to reduce the amplitude of the acoustic wave generated by the vibration of the rear acoustic cavity 12 a.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (7)
1. A sound emitting device, comprising:
A housing having a mounting cavity;
The sound production unit comprises a vibration component and a magnetic circuit component, and is arranged in the installation cavity and seals and blocks the installation cavity to form a front sound cavity and a rear sound cavity;
The resetting piece is arranged in the shell and is used for elastically resetting the vibration assembly, and the resetting piece comprises a centering support piece; and
The movable sealing fit structure is positioned in the mounting cavity;
Wherein the vibration component is movably matched with the movable sealing matching structure, and the vibration component is kept in sealing matching with the movable sealing matching structure in the vibration process;
The movable seal matching structure comprises:
A peripheral ring groove which is arranged in the shell and is annularly arranged at the periphery of the vibration component; and
A second sealing material disposed in the peripheral ring groove;
the peripheral side part of the vibration component stretches into the peripheral annular groove and is movable in the peripheral annular groove, and the second sealing material is sealed with the vibration component;
the vibration assembly comprises a reinforcing part and a voice coil arranged on one side of the reinforcing part facing the rear acoustic cavity, and the peripheral side part of the reinforcing part is matched with the peripheral annular groove.
2. The sound emitting apparatus of claim 1, wherein the centering tabs comprise:
A main body outer frame;
The plurality of elastic support pieces are arranged on the inner side of the main body outer frame, one ends of the plurality of elastic support pieces are connected with the main body outer frame, and the other ends of the plurality of elastic support pieces are used for elastically supporting the vibration assembly.
3. The sound generating apparatus of claim 2, wherein the plurality of elastic support pieces are distributed on each side of the main body frame; and/or the number of the groups of groups,
Each elastic supporting piece comprises a main body section and a supporting section, one end of the main body section is connected with the inner side of the main body outer frame and extends along one side edge of the main body outer frame, one end of the supporting section is connected with the other end of the main body section, and the other end of the supporting section extends towards the middle of the surrounding area of the main body outer frame and is used for elastically supporting the vibration component; and/or the number of the groups of groups,
The centering support piece further comprises a support inner frame, wherein the support inner frame is arranged on the inner side of the main body outer frame and is connected with the main body outer frame through the elastic support pieces, and the support inner frame is connected with the vibration assembly.
4. The sound generating apparatus according to claim 2, wherein the vibration member includes a reinforcing portion, and a voice coil mounted on a side of the reinforcing portion facing the rear acoustic chamber;
and the connecting part for connecting the centering support piece and the vibration assembly is clamped between the voice coil and the reinforcing part.
5. The sound emitting device of claim 1, wherein the second sealing material is a sealing gel, a silicone gel, or a sealing liquid that is capable of being confined in the peripheral ring groove.
6. The sound generating apparatus of claim 1, wherein a peripheral fixed sealing structure is further formed in the mounting cavity, and the sound generating unit is in sealing connection with the inner side wall of the housing at the peripheral portion of the vibration assembly to form the peripheral fixed sealing structure; and/or the number of the groups of groups,
The central opening of the magnetic circuit assembly is arranged; and/or the number of the groups of groups,
The shell is internally provided with a cavity communicated with the rear acoustic cavity at least at one periphery of the rear acoustic cavity.
7. An electronic product comprising a sound emitting device according to any one of claims 1 to 6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367324.1A CN109982221B (en) | 2019-04-30 | 2019-04-30 | Sound generating device and electronic product |
| PCT/CN2019/129754 WO2020220713A1 (en) | 2019-04-30 | 2019-12-30 | Sound production device and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367324.1A CN109982221B (en) | 2019-04-30 | 2019-04-30 | Sound generating device and electronic product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109982221A CN109982221A (en) | 2019-07-05 |
| CN109982221B true CN109982221B (en) | 2024-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910367324.1A Active CN109982221B (en) | 2019-04-30 | 2019-04-30 | Sound generating device and electronic product |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109982221B (en) |
| WO (1) | WO2020220713A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109982221B (en) * | 2019-04-30 | 2024-04-30 | 歌尔股份有限公司 | Sound generating device and electronic product |
| WO2021128047A1 (en) * | 2019-12-25 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Sound producing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202841505U (en) * | 2012-08-14 | 2013-03-27 | 歌尔声学股份有限公司 | Electroacoustic transducer |
| CN202841514U (en) * | 2012-10-20 | 2013-03-27 | 歌尔声学股份有限公司 | Loudspeaker unit |
| CN204272375U (en) * | 2014-12-11 | 2015-04-15 | 瑞声光电科技(常州)有限公司 | Loud speaker |
| CN210007884U (en) * | 2019-04-30 | 2020-01-31 | 歌尔股份有限公司 | Sound production device and electronic product |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2919978B1 (en) * | 2007-08-09 | 2011-04-29 | Gilles Milot | ELECTRODYNAMIC TRANSDUCER, IN PARTICULAR OF THE SPEAKER TYPE, WITH FERROFLUID SUSPENSION AND ASSOCIATED DEVICES |
| CN205847556U (en) * | 2016-05-26 | 2016-12-28 | 瑞声科技(新加坡)有限公司 | Speaker |
| CN106303856A (en) * | 2016-08-30 | 2017-01-04 | 歌尔股份有限公司 | Loudspeaker monomer and electronic equipment |
| CN107995570A (en) * | 2017-11-23 | 2018-05-04 | 苏州逸巛声学科技有限公司 | A kind of receiver |
| CN208691548U (en) * | 2018-07-18 | 2019-04-02 | 山东共达电声股份有限公司 | Microspeaker |
| CN109982221B (en) * | 2019-04-30 | 2024-04-30 | 歌尔股份有限公司 | Sound generating device and electronic product |
-
2019
- 2019-04-30 CN CN201910367324.1A patent/CN109982221B/en active Active
- 2019-12-30 WO PCT/CN2019/129754 patent/WO2020220713A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202841505U (en) * | 2012-08-14 | 2013-03-27 | 歌尔声学股份有限公司 | Electroacoustic transducer |
| CN202841514U (en) * | 2012-10-20 | 2013-03-27 | 歌尔声学股份有限公司 | Loudspeaker unit |
| CN204272375U (en) * | 2014-12-11 | 2015-04-15 | 瑞声光电科技(常州)有限公司 | Loud speaker |
| CN210007884U (en) * | 2019-04-30 | 2020-01-31 | 歌尔股份有限公司 | Sound production device and electronic product |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020220713A1 (en) | 2020-11-05 |
| CN109982221A (en) | 2019-07-05 |
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