CN206820998U - Low noise vibrating diaphragm and comprehensive sounding loudspeaker - Google Patents
Low noise vibrating diaphragm and comprehensive sounding loudspeaker Download PDFInfo
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- CN206820998U CN206820998U CN201720465171.0U CN201720465171U CN206820998U CN 206820998 U CN206820998 U CN 206820998U CN 201720465171 U CN201720465171 U CN 201720465171U CN 206820998 U CN206820998 U CN 206820998U
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Abstract
The utility model discloses a kind of low noise vibrating diaphragm, including omnidirectional's sounding vibrating diaphragm body with cavity, in the middle and lower part position of the vibrating diaphragm body outer wall and/or inwall, prolong the vibrating diaphragm body diameter flaring direction, the gradual intensive projection of distribution and/or groove provided with several.The vibrating diaphragm can greatly suppress diaphagras caused by its motion, and then abate the noise.
Description
Technical field
The utility model belongs to speaker technology field, and in particular to a kind of low noise vibrating diaphragm and comprehensive sounding are raised one's voice
Device.
Background technology
With the development and growth in the living standard of science and technology, people are to high-fidelity, Whole frequency band, 360 degree of omnidirectional's pronunciation equipments
Propose higher demand.A kind of comprehensive sounding loudspeaker in the prior art be present, annular diaphragm is driven in axle by voice coil loudspeaker voice coil
To vibration sounding, the sound travel that annular spreads can be formed.The program solves conventional loudspeakers sounding overlay area in the prior art
The problem of dead angle be present, realize the technique effect of no 360 degree of omnidirectional's sounding in dead angle, allow the playback of sound and music in any position
Put and angle is all closest to natural primary sound.
However, invention is found during the utility model is realized, the side of the loudspeaker voice coil driving sounding of the type
To for vibrating diaphragm axial direction, during driving, diaphagras easily occurs for its internal vibrating diaphragm, produces noise.Specifically, the type
Loudspeaker mainly include voice coil loudspeaker voice coil, vibrating diaphragm and magnetic structure etc., under the driving of voice coil loudspeaker voice coil, vibrating diaphragm is entered along its axial direction by compression stretching
Row moves back and forth at a high speed, but because airflow function, diaphragm surface can produce certain deformation, table in the normal direction perpendicular to axial direction
It is now lateral expansion, and then produces certain noise, and is spread to surrounding.Meanwhile utility model people also found, in loudspeaker
The material of vibrating diaphragm on tonequality influence it is very big, especially when high-frequency signal drives, conventional diaphragm materials, such as paper, plastics,
Aluminium etc., tonequality can be caused not ideal enough.
The above- mentioned information disclosed in the background section, it is only used for strengthening the understanding to the utility model background, because
This it can include not forming the information to prior art known to persons of ordinary skill in the art.
Utility model content
(1) purpose of utility model
For the drawbacks described above of prior art, technical problem to be solved in the utility model is：How greatly to eliminate
Diaphagras caused by vibrating diaphragm motion, and then the influence to tonequality that abates the noise.
Other characteristics and advantage of the present utility model will be apparent from by following detailed description, or partially by this
The practice of utility model and acquistion.
(2) technical scheme
In order to solve the above-mentioned technical problem, the utility model provides a kind of vibrating diaphragm to abate the noise
A kind of low noise vibrating diaphragm, including omnidirectional's sounding vibrating diaphragm body with cavity, in the vibrating diaphragm body outer wall and/or
The surface of inwall, provided with several raised and/or grooves.
Alternatively, the film that the vibrating diaphragm body is set for annular.
Alternatively, there is change in the cross-sectional diameter of the vibrating diaphragm body at least one direction.
Alternatively, prolong on the vibrating diaphragm body diameter flaring direction, the distribution of described projection and/or groove is gradually close
Collection.
Alternatively, described projection and/or groove are hexagon, quadrangle, tree-like, triangle or annular.
Alternatively, the vibrating diaphragm body diameter flaring direction is prolonged, described raised and/or groove size becomes larger.
Alternatively, the vibrating diaphragm body is made up of several using the segmental structure of unlike material, and prolongs the vibrating diaphragm sheet
Body diameter flaring direction, several the described segmental structures being sequentially distributed gradually are increased using the rigidity of material.
Alternatively, described projection and/or groove are annular, and are surrounded on the outer wall and/or inwall of the vibrating diaphragm body
Set, the spacing prolonged between the vibrating diaphragm body diameter flaring direction, two neighboring annular projection and/or groove gradually becomes
It is small.
Alternatively, be surrounded on the outer wall of the vibrating diaphragm body and/or inwall set it is annular described raised and/or recessed
Groove, between the two neighboring segmental structure.
Alternatively, described several are formed in one structure using the segmental structure of unlike material.
Alternatively, the vibrating diaphragm is integrally in round table-like.
Alternatively, film layer is all covered with each segmental structure, the film layer is more than institute using the rigidity of material
State the rigidity that vibrating diaphragm body uses material.
Alternatively, the material of the film layer covered on the different segmental structures is different.
Alternatively, covered on several the described segmental structures for prolong the vibrating diaphragm body diameter flaring direction, being sequentially distributed
Film layer material rigidity gradually increase.
Alternatively, described several are formed by connecting using the segmental structure of unlike material by welding or bonding way.
Conceived based on above-mentioned utility model, the utility model may also provide a kind of comprehensive sounding loudspeaker, comprise at least
Magnetic structure and voice coil loudspeaker voice coil, the loudspeaker also include the vibrating diaphragm described in any of the above-described.
(3) beneficial effect
1st, vibrating diaphragm provided by the utility model, because prolonging the axial direction of vibrating diaphragm body, the position being relatively large in diameter is divided because caused by
It is relatively large to cut vibration, based on this, in the middle and lower part position of vibrating diaphragm body outer wall and/or inwall, prolongs vibrating diaphragm body provided with several
Diameter flaring direction, the gradual intensive projection of distribution and/or groove, can effectively suppress caused bigger segmentation herein and shake
It is dynamic, improve the effect to abate the noise.
2nd, vibrating diaphragm provided by the utility model, its inwall and/or outer wall be provided with tree-like, hexagon, it is square, annular or
The projection and/or groove of person's triangle, available for the increase integrally-built stability of vibrating diaphragm, enhancing suppresses the effect of diaphagras
Fruit, the effect that abates the noise are more excellent.
3rd, vibrating diaphragm provided by the utility model, vibrating diaphragm body diameter flaring direction is prolonged, by the gradually increase of several rigidity
Segmental structure composition, suppress diaphagras using the preferable rigidity characteristics of vibrating diaphragm body.Especially, the axle of vibrating diaphragm body is prolonged
To, the position being relatively large in diameter diaphagras because caused by is relatively large, so correspondingly, the position using material rigidity also compared with
Greatly, diaphagras and then is effectively suppressed, abate the noise significant effect.
4th, vibrating diaphragm provided by the utility model, covered with film layer, the rigidity of the film layer material on vibrating diaphragm body
More than the rigidity of vibrating diaphragm body material, when vibrating diaphragm body moves back and forth sounding, good inhibiting effect is played to diaphagras,
And prolong the part that vibrating diaphragm body is axially relatively large in diameter, the film layer covered thereon is rigidly larger, and the suppression to diaphagras can be with
Reinforcement, abate the noise better.
It should be appreciated that the general description and following detailed description of the above are exemplary only, this can not be limited
Utility model.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of vibrating diaphragm in the utility model embodiment one；
Fig. 2 is the structural representation of vibrating diaphragm in the utility model embodiment two；
Fig. 3 is the structural representation of vibrating diaphragm in the utility model embodiment three；
Fig. 4 is the structural representation of another vibrating diaphragm in the utility model embodiment three；
Fig. 5 is the structural representation of vibrating diaphragm in the utility model embodiment four；
Fig. 6 is the structural representation of vibrating diaphragm in the utility model embodiment five；
Fig. 7 is the structural representation of vibrating diaphragm in the utility model embodiment six；
Fig. 8 is the profile of vibrating diaphragm in the utility model embodiment seven；
Fig. 9 is the structural representation of comprehensive sounding loudspeaker in the utility model embodiment eight.
In figure, 1- vibrating diaphragm bodies；2- film layers；3- projections and/or groove；4- voice coil loudspeaker voice coils；5- magnetic structures.
Embodiment
It is below in conjunction with the accompanying drawings and specific real to make those skilled in the art more fully understand the technical solution of the utility model
Mode is applied to be described in further detail the utility model.
In the prior art, axially transported under the driving of voice coil loudspeaker voice coil using the comprehensive sounding loudspeaker of annular diaphragm, its vibrating diaphragm
It is dynamic, limited by material and technique, large stretch of vibrating diaphragm does not ensure that Uniform Movement, and can occur one at random in the normal direction
Fixed deformation, this deformation occurred at random generates unmanageable noise, thus 360 degree of omnidirectional's sounding of prior art are raised one's voice
The audio of device is difficult to ensure that.
Embodiment one
In one embodiment of the present utility model, as shown in Figure 1, there is provided a kind of low noise vibrating diaphragm, be mainly used in pacifying
In loudspeaker, the vibrating diaphragm includes the omnidirectional with cavity and vibrating diaphragm body 1 occurs, and such as, but not limited in round table-like, that is, cuts
It is coniform, on the outer wall of vibrating diaphragm body 1 and/or the surface of inwall, provided with several raised and/or grooves 3.
In the preferred embodiment of the present utility model shown in Fig. 1, the vibrating diaphragm is round table-like for top and the bottom opening；
In actual conditions, the vibrating diaphragm that other annulars in addition to round table-like are set is applied equally to the utility model.Such as typical case
Ground, the vibrating diaphragm that the annular such as column, spherical, hemispherical, oval mesa-shaped (i.e. drum type) is set also can reach similar effect substantially；Or
Person, it is round table-like relative to rotating to obtain around right angle waist by right-angled trapezium, after the oblique waist of right-angled trapezium is substituted for into arbitrary curve,
Waist rotates to obtain around right angle curved surface is round table-like also to can reach similar effect substantially.Therefore, vibrating diaphragm (including vibrating diaphragm body and interior
Portion's cavity etc.) shape be not construed as limitation to the utility model embodiment.
In addition, utility model people has found that vibrating diaphragm cross-sectional area is bigger, i.e., its cross section is straight for the vibrating diaphragm that annular is set
Footpath is bigger, and more remote apart from vibrating diaphragm central shaft at vibration in other words, the free degree of diaphragm oscillations is bigger, thus caused diaphagras
Stronger, noise also can be bigger therewith.Based on this phenomenon, in a preferred embodiment, for the unfixed annular of cross-sectional diameter
Vibrating diaphragm (i.e. non-cylindrical vibrating diaphragm), described raised and/or groove are preferably provided at the middle and lower part position of vibrating diaphragm, i.e., in vibrating diaphragm, low
Sound sounding position.Further, prolong on the vibrating diaphragm body diameter flaring direction, raised and/or groove the distribution is gradual
It is intensive.Wherein, for the vibrating diaphragm of non-cylindrical, the angle between the side wall and horizontal plane of vibrating diaphragm body is preferably 65 degree to 75
Degree.
Especially, vibrating diaphragm body diameter flaring direction is prolonged, raised and/or groove 3 size (i.e. shape) becomes larger.With
Exemplified by round table-like vibrating diaphragm, because of the outer wall of vibrating diaphragm body 1 and/or the middle and lower part position of inwall, caused diaphagras it is relatively stronger (with
The outer wall of vibrating diaphragm body 1 and/or the upper position of inwall compare), and the bigger position of axial diameter for prolonging vibrating diaphragm body produces
Diaphagras it is bigger, therefore above-mentioned set-up mode, raised and/or groove is similar to multilayered fold, can increase diaphragm structure
Stability, fixation is played, when vibrating diaphragm sounding, vibrating diaphragm body is unlikely to deform, and effectively suppresses diaphagras, and elimination is made an uproar
Sound.
Embodiment two
The alternatively possible implementation of the utility model embodiment, as shown in Fig. 2 in the outer of above-mentioned vibrating diaphragm body 1
The middle and lower part position of wall and/or inwall, i.e., in vibrating diaphragm, bass sounding position, prolong vibrating diaphragm body diameter flaring side provided with several
To the projection and/or groove 3 of the gradual intensive quadrangle of, distribution, i.e., including square, rectangle, rhombus or irregular quadrangle
Projection and/or groove 3.
Embodiment three
The alternatively possible implementation of the utility model embodiment, in the outer wall and/or inwall of above-mentioned vibrating diaphragm body 1
Middle and lower part position, i.e., in vibrating diaphragm, bass sounding position, it is gradual to prolong vibrating diaphragm body diameter flaring direction, distribution provided with several
Intensive annular projection and/or groove 3.In a preferred embodiment, as shown in figure 3, the annular projection and/or groove
3 can directly be horizontally set with the side wall of vibrating diaphragm body.In another preferred embodiment, as shown in figure 4, annular projection and/or
Groove 3 is surrounded on the outer wall of vibrating diaphragm body and/or inwall is set, and prolongs the diameter flaring direction of vibrating diaphragm body 1, two neighboring annular
Projection and/or groove 3 between spacing taper into, further, be surrounded on vibrating diaphragm body outer wall and/or inwall set
Annular protrusion and/or groove 3, between two adjacent segmental structures, i.e. segmental structure is by being surrounded on the vibrating diaphragm sheet
The annular raised and/or groove division that the outer wall and/or inwall of body are set.The set-up mode is based primarily upon reinforcement
Principle, it may be such that vibrating diaphragm overall structure is more firm, suppress diaphagras, and in the axial direction of vibrating diaphragm body 1, the portion being relatively large in diameter
Point, the distribution of annular protrusion or annular groove can effectively suppress caused bigger diaphagras herein, enter than comparatively dense
And improve the effect to abate the noise.
Wherein, for the annular projection and/or groove 3 shown in Fig. 4, when having multiple annular, preferably each annular
Width it is identical but spacing is different, the spacing prolonged between each annular in the diameter flaring direction of vibrating diaphragm body 1 tapers into.
Example IV
The alternatively possible implementation of the utility model embodiment, as shown in figure 5, in the outer of above-mentioned vibrating diaphragm body 1
The middle and lower part position of wall and/or inwall, i.e., in vibrating diaphragm, bass sounding position, projection and/or groove provided with several triangles
3, to increase the integrally-built stability of vibrating diaphragm, when vibrating diaphragm sounding, suppress diaphagras, improve the effect to abate the noise.
Embodiment five
The alternatively possible implementation of the utility model embodiment, as shown in fig. 6, in the outer of above-mentioned vibrating diaphragm body 1
The middle and lower part position of wall and/or inwall, i.e., in vibrating diaphragm, bass sounding position, provided with several tree-like projections and/or groove 3,
To increase the integrally-built stability of film, when vibrating diaphragm sounding, suppress diaphagras, improve the effect to abate the noise.
Embodiment six
The alternatively possible implementation of the utility model embodiment, the technical scheme in embodiment one to embodiment five
On the basis of, as shown in Figure 7 (for clear expression segmental structure, raised and/or groove structure not shown in figure), vibrating diaphragm body
1 is made up of several using the segmental structure (11,12,13) of unlike material, such as by three segmental structures (11,12,13) group
Into, several segmental structures (11,12,13) prolong the axial direction distribution of vibrating diaphragm body 1, and building form is preferably formed in one, or
Person is formed by connecting using modes such as welding, bondings, can also be formed using other applicable patterns in the prior art, not made herein certainly
It is specific to limit.Further, several segmental structures (11,12,13) for prolong the diameter flaring direction of vibrating diaphragm body 1, being sequentially distributed
Using the rigidity gradually increase of material, it is preferable that the material that vibrating diaphragm body 1 uses is almag, but each segmental structure
(11,12,13) aluminium, magnesium component ratio are different in the material used, prolong the segmentation of the axial direction, diameter smaller part position of vibrating diaphragm body 1
Contained magnesium component is less in structure (11,12,13), is relatively large in diameter contained in the segmental structure (11,12,13) at position
Magnesium component is more (rigidity of magnesium material is more than the rigidity of aluminum).It is further preferable that the material that vibrating diaphragm body 1 uses is alternatively
Beallon, beryllium alumin(i)um alloy, beryllium nickel alloy or beryllium titanium alloy, and if prolonging the diameter flaring direction of vibrating diaphragm body 1, being sequentially distributed
Gradually (rigidity of beryllium material is more than copper, aluminium, nickel, titanium material for increase for the composition of beryllium in dry segmental structure (11,12,13)
Rigidity).
Vibrating diaphragm body 1 use the technical principle of above-mentioned set-up mode for：The material of vibrating diaphragm body 1 requires that greatly ductility is good
Good, correspondingly rigidity can be poor so that when moving reciprocatingly diaphagras easily occurs for vibrating diaphragm, and prolongs the axle of vibrating diaphragm body 1
To diaphagras caused by the bigger position of diameter is stronger, and the noise brought is also bigger therewith.In order to overcome the technological deficiency,
The segmental structure that vibrating diaphragm body 1 is arranged to prolong its diameter flaring direction, by several rigidly gradually increased by the utility model
(11,12,13) construction of composition, the preferable rigidity characteristics that have using the material of vibrating diaphragm body 1 suppress diaphagras.Specially
Ground, prolong the axial direction of vibrating diaphragm body 1, the position being relatively large in diameter diaphagras because caused by is strong, so the correspondingly material at the position
Rigidity characteristics it is relatively large, more excellent to the inhibition of diaphagras, abate the noise significant effect.
It should be noted that in the utility model why using by vibrating diaphragm body 1 be arranged to prolong its diameter flaring direction,
The construction being made up of several segmental structures (11,12,13) rigidly gradually increased, rather than vibrating diaphragm body 1 is arranged to same
Material (i.e. rigid identical material), it is in order to ensure vibrating diaphragm integrally has good ductility concurrently, can preferably suppresses to split again
Vibrate the noise brought.
Embodiment seven
The alternatively possible implementation of the utility model embodiment, in embodiment one to the technical scheme of embodiment six
On the basis of, as shown in figure 8, being all covered with film on several segmental structures (11,12,13) of above-mentioned composition vibrating diaphragm body 1
Layer 2, the thickness of film layer 2 is between 0.1mm~0.3mm, and coverage mode, which can use, plating, coat or be bonded etc., further
Ground, film layer 2 is more than rigidity of the vibrating diaphragm body 1 using material using the rigidity of material, such as, but not limited to using alfene alloy,
Graphene nanometer sheet, ceramics and/or titanium fiber etc. are made.It is preferred that covered on different segmental structures (11,12,13) thin
The material of film layer 2 is different, and prolongs the diameter flaring direction of vibrating diaphragm body 1, the film layer 2 covered on each segmental structure (11,12,13)
The gradually increase of the rigidity of material.Because the rigidity of the material of film layer 2 is more than the rigidity of the material of vibrating diaphragm body 1, so in vibrating diaphragm sheet
When body 1 moves back and forth sounding, preferably inhibitory action is played to diaphagras, and prolong the portion that vibrating diaphragm body 1 is axially relatively large in diameter
Point, the rigidity of film layer 2 covered thereon is larger, and the suppression to diaphagras can be strengthened therewith, reduce noise result more preferably.This
Outside, the thickness of film layer 2 is relatively very thin, the overall ductility of vibrating diaphragm is influenceed very small.
Embodiment eight
Conceived based on above-mentioned utility model, raised one's voice as shown in figure 9, the utility model may also provide a kind of comprehensive sounding
Device, the loudspeaker comprise at least voice coil loudspeaker voice coil 4 and magnetic structure 5.Further, the preferred reality of the basic configuration of the loudspeaker and structure
Mode such as Fig. 9 is applied, voice coil loudspeaker voice coil 4 and magnetic structure 5 are arranged in the top of round table-like vibrating diaphragm 1, because its voice coil loudspeaker voice coil 4 and magnetic structure 5 are not
The focus of the utility model embodiment, by the way of prior art, it will not be repeated here.Loudspeaker in the present embodiment
Compared with loudspeaker in the prior art, difference essentially consists in：Above-described embodiment is employed in loudspeaker of the present utility model
In vibrating diaphragm.
Certainly, Fig. 9 is only that a kind of of the utility model preferred embodiment illustrates, in actual conditions, voice coil loudspeaker voice coil and magnetic circuit knot
The position of structure is related (because voice coil loudspeaker voice coil needs to act in magnetic field), but the position relationship of voice coil loudspeaker voice coil and vibrating diaphragm not strong correlation, only needs both
Mutually press close to/be bonded.Therefore, in the utility model other optional embodiments, voice coil loudspeaker voice coil 4 and magnetic circuit knot shown in Fig. 9
Structure 5 also may be provided at other positions, for example be arranged on the bottom of vibrating diaphragm 1, middle part even inside, or the group at multiple positions
Close；Preferably, for ease of installation/fixation of part, magnetic structure and voice coil loudspeaker voice coil are arranged on the top and/or bottom of vibrating diaphragm.Therefore,
Relevant technical staff in the field is appreciated that magnetic structure and voice coil structure and/or position are not construed as having the utility model
The limitation of body embodiment.
Embodiment of the present utility model provides a kind of low noise vibrating diaphragm and comprehensive sounding loudspeaker, by vibrating diaphragm sheet
Raised and/or groove is set to suppress diaphagras caused by vibrating diaphragm sounding on body so that vibrating diaphragm only produces through controlled vibration
Raw effective sounding, significantly eliminates unnecessary noise, improves the tonequality of loudspeaker.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvement and deformation can also be made, these change
Enter and deform and also should be regarded as the scope of protection of the utility model.
Claims (10)
1. a kind of low noise vibrating diaphragm, it is characterised in that including omnidirectional's sounding vibrating diaphragm body with cavity, in the vibrating diaphragm body
The surface of outer wall and/or inwall, provided with several raised and/or grooves.
2. vibrating diaphragm as claimed in claim 1, it is characterised in that the film that the vibrating diaphragm body is set for annular.
3. vibrating diaphragm as claimed in claim 2, it is characterised in that the cross-sectional diameter of the vibrating diaphragm body is at least one direction
It is upper change to be present.
4. vibrating diaphragm as claimed in claim 3, it is characterised in that prolong on the vibrating diaphragm body diameter flaring direction, described is convex
Rise and/or the distribution of groove is gradually intensive.
5. vibrating diaphragm as claimed in claim 1, it is characterised in that described raised and/or groove be hexagon, quadrangle, it is tree-like,
Triangle or annular.
6. vibrating diaphragm as claimed in claim 3, it is characterised in that prolong the vibrating diaphragm body diameter flaring direction, described projection
And/or the size of groove becomes larger.
7. vibrating diaphragm as claimed in claim 3, it is characterised in that the vibrating diaphragm body is used the segmentation of unlike material by several
Structure composition, and prolong the vibrating diaphragm body diameter flaring direction, several described segmental structures for being sequentially distributed are using material
Rigidity gradually increase.
8. vibrating diaphragm as claimed in claim 7, it is characterised in that described projection and/or groove is annular, and is surrounded on described
The outer wall and/or inwall of vibrating diaphragm body are set, prolong the vibrating diaphragm body diameter flaring direction, two neighboring annular projection and/
Or the spacing between groove tapers into.
9. vibrating diaphragm as claimed in claim 8, it is characterised in that the outer wall and/or inwall for being surrounded on the vibrating diaphragm body are set
The annular raised and/or groove, between the two neighboring segmental structure.
10. a kind of comprehensive sounding loudspeaker, including at least magnetic structure and voice coil loudspeaker voice coil, it is characterised in that the loudspeaker also wraps
Include the vibrating diaphragm as described in any one of claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720465171.0U CN206820998U (en) | 2017-04-28 | 2017-04-28 | Low noise vibrating diaphragm and comprehensive sounding loudspeaker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720465171.0U CN206820998U (en) | 2017-04-28 | 2017-04-28 | Low noise vibrating diaphragm and comprehensive sounding loudspeaker |
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| CN206820998U true CN206820998U (en) | 2017-12-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107071664A (en) * | 2017-04-28 | 2017-08-18 | 北京欧意智能科技有限公司 | Low noise vibrating diaphragm and comprehensive sounding loudspeaker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107071664A (en) * | 2017-04-28 | 2017-08-18 | 北京欧意智能科技有限公司 | Low noise vibrating diaphragm and comprehensive sounding loudspeaker |
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