CN110267176A - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
- Publication number
- CN110267176A CN110267176A CN201910605986.8A CN201910605986A CN110267176A CN 110267176 A CN110267176 A CN 110267176A CN 201910605986 A CN201910605986 A CN 201910605986A CN 110267176 A CN110267176 A CN 110267176A
- Authority
- CN
- China
- Prior art keywords
- front cover
- flange
- vibrating diaphragm
- edge
- adhesive portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
Abstract
The present invention provides loudspeakers, it includes frame, front cover and vibrational system, vibrational system includes vibrating diaphragm, front cover includes the opposite top surface in the bottom surface and bottom surface opposite with vibrating diaphragm and the lateral surface that is connected between top surface and bottom surface, and frame includes the extended surface for facing the bending of front cover direction with the supporting surface of bottom surface face and self-supporting and extending；Vibrating diaphragm includes adhesive portion and turns down the flange to be formed from adhesive portion edge, adhesive portion has and bottom surface interval and the bonding plane that is oppositely arranged, for flange between extended surface and lateral surface, loudspeaker further includes the adhesive-layer being located between bonding plane and bottom surface and the sealant that is filled between lateral surface and flange.The present invention is by being set as vibrating diaphragm with the flange folded on the outside of front cover lateral surface, and the filling with sealant between flange and lateral surface, in this way, being equivalent to the glue area in a disguised form increased between front cover and vibrating diaphragm, achieve the purpose that depth waterproof, while the acoustical behavior of product will not be reduced.
Description
[technical field]
The present invention relates to acoustic-electric field more particularly to a kind of loudspeakers.
[background technique]
The loudspeaker of the prior art, loudspeaker depth waterproof, after front cover and vibrating diaphragm are glued, meeting will along the outer edge of front cover
Extra diaphragm materials are cut off so that the outer edge of vibrating diaphragm and the outer edge of front cover are concordant, and in order to realize between front cover and vibrating diaphragm
Depth waterproof, can typically be reduced in this way by the cemented surface width that increases front cover end face and vibrating diaphragm end face come what is realized
The acoustical behavior of product.
Therefore, it is necessary to provide a kind of new loudspeaker solution above-mentioned technical problem.
[summary of the invention]
The purpose of the present invention is to provide a kind of loudspeakers, can realize under the premise of not reducing product acoustical behavior
Depth waterproof between front cover and vibrating diaphragm.
Technical scheme is as follows: a kind of loudspeaker, including the frame with accommodating space and is contained in described
The vibrational system of accommodating space, the vibrational system include the vibrating diaphragm for being fixed on the frame, and the loudspeaker further includes folded sets
In the front cover of the vibrating diaphragm, the vibrating diaphragm is set between the frame and the front cover, and the front cover includes and the vibrating diaphragm
Opposite bottom surface, the top surface opposite with the bottom surface and the lateral surface being connected between the top surface and the bottom surface, it is described
Frame includes side with the supporting surface of the bottom surface face and from the supporting surface far from the accommodating space towards described
The extended surface that the bending of front cover direction extends, the extended surface is opposite with the lateral surface and interval is arranged；The vibrating diaphragm includes frame
The adhesive portion that is located between the supporting surface and the bottom surface and the flange to be formed, the adhesive portion tool are turned down from adhesive portion edge
Have with the bottom surface interval and the bonding plane that is oppositely arranged, the flange between the extended surface and the lateral surface and with
Outside face interval setting, the loudspeaker further include the adhesive-layer being located between the adhesive portion and the bottom surface, with
And it is filled in the sealant between the lateral surface and the flange.
Optionally, the flange has the first edge connecting with the adhesive portion and the second side far from the adhesive portion
Edge, the distance between the first edge and the second edge are greater than or equal to 0.05mm.
Optionally, the distance between the first edge and the second edge are between 0.05mm-0.1mm.
Optionally, the flange and the extensions face interval setting, the sealant also fill up in the flange with it is described
Between extended surface.
Optionally, multiple flange are set around the adhesive portion periphery and are spaced apart from each other setting.
Optionally, the bottom surface is plane；Alternatively,
The bottom surface is equipped with groove, and the adhesive-layer is further filled between the groove and the bonding plane.
Optionally, the bonding plane is plane.
Optionally, the front cover includes roof opposite and spaced with the vibrating diaphragm and from the side of the roof
The side wall that edge extends towards frame direction bending, the one end of the side wall far from the roof is the bottom surface, the roof
Through offering out acoustic aperture.
Optionally, the bottom surface and the bonding plane are annular.
The beneficial effects of the present invention are: the present invention by being set as vibrating diaphragm with the flange folded on the outside of lateral surface,
And the filling with sealant between flange and lateral surface, in this way, it is equivalent to the glue area in a disguised form increased between front cover and vibrating diaphragm, from
And glued fastness between the two can be effectively increased, achieve the purpose that depth waterproof, while the acoustics of product will not be reduced
Energy.
[Detailed description of the invention]
Fig. 1 is the schematic perspective view of front cover and vibrating diaphragm that the embodiment of the present invention one provides；
Fig. 2 is the half-sectional perspective view of A-A in Fig. 1；
Fig. 3 is the partial enlarged view in Fig. 2 at B；
Fig. 4 is the decomposition diagram of front cover and vibrating diaphragm that the embodiment of the present invention one provides；
Fig. 5 is the partial enlarged view in Fig. 4 at C；
Fig. 6 is the schematic perspective view for the loudspeaker that the embodiment of the present invention one provides；
Fig. 7 is the half-sectional perspective view of D-D in Fig. 6；
Fig. 8 is the partial enlarged view in Fig. 7 at E；
Fig. 9 is the exploded view for the loudspeaker that the embodiment of the present invention one provides；
Figure 10 is the exploded view for the loudspeaker that the embodiment of the present invention one provides；
Figure 11 is the decomposition diagram of front cover provided by Embodiment 2 of the present invention and vibrating diaphragm；
Figure 12 is the partial enlarged view in Figure 11 at F；
Figure 13 is the part cooperation schematic diagram of front cover provided by Embodiment 2 of the present invention and vibrating diaphragm；
Figure 14 be the front cover that provides of the embodiment of the present invention three and structural schematic diagram；
Figure 15 is the partial enlarged view in Figure 14 at G.
[specific embodiment]
The invention will be further described with embodiment with reference to the accompanying drawing.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
It should also be noted that, when an element is referred to as being " fixed " or " disposed " on another element, it can be straight
Connect on the other element or may be simultaneously present centering elements.When an element is known as " connection " another element,
It, which can be, is directly connected to another element or may be simultaneously present centering elements.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
Embodiment one:
Please refer to Fig. 1-10, loudspeaker provided in an embodiment of the present invention, including frame 100, front cover 200, vibrational system 300
With magnetic circuit system 400, frame has accommodating space 120, and vibrational system 300 and magnetic circuit system 400 are contained in accommodating space 120,
Vibrational system 300 includes being fixed on the vibrating diaphragm 310 of frame 100 and being supported on the voice coil 320 of 310 side of vibrating diaphragm, and front cover 200 is folded
Set on vibrating diaphragm 310, and vibrating diaphragm 310 is located between front cover 200 and frame 100.Magnetic circuit system 400 includes being fixed on frame 100 far
Magnetic bowl 410 from 310 side of vibrating diaphragm and the main magnet steel 420 and side magnet steel 430 for being fixed on magnetic bowl 410, side magnet steel 430 are located at
The opposite sides of main magnet steel 420 simultaneously forms magnetic gap 440 with the setting of main magnet steel 420 interval, voice coil 320 far from vibrating diaphragm 310 one
Circle is suspended in magnetic gap 440.
Specifically, front cover 200 include the bottom surface 210 opposite with vibrating diaphragm 310, the top surface 240 opposite with bottom surface 210 and
The lateral surface 220 being connected between top surface 240 and bottom surface 210.Frame 100 include with the supporting surface 110 of 210 face of bottom surface, with
And the extended surface 130 that the side of the separate accommodating space 120 in self-supporting face 110 extends towards the bending of 200 direction of front cover, extended surface
130 and interval settings opposite with lateral surface 220.Front cover 200 and vibrating diaphragm 310 are supported on supporting surface 110.Vibrating diaphragm 310 includes frame
The adhesive portion 311 that is located between supporting surface 130 and bottom surface 210 and the flange 312 to be formed, flange are turned down from 311 edge of adhesive portion
312 are spaced setting between extended surface 130 and lateral surface 220 and with lateral surface 220.Vibrating diaphragm 310 includes being erected at supporting surface
Adhesive portion 311 between 110 and bottom surface 210 and turn down the flange 312 to be formed from 311 edge of adhesive portion, adhesive portion 311 have with
Bottom surface 210 is spaced and the bonding plane 3111 that is oppositely arranged, flange 312 between extended surface 130 and lateral surface 220 and with outside
The setting of the interval of face 220, is folded with adhesive-layer 500, fills out between lateral surface 220 and flange 312 between bonding plane 3111 and bottom surface 210
Filled with sealant 600.In the embodiment of the present invention, vibrating diaphragm 310 is in addition to having for the adhesive portion Nian Jie with 200 bottom surface 210 of front cover
Outside 311, also has and fold in 220 outside of lateral surface and the flange 312 Nian Jie with lateral surface 220, in a disguised form increase in this way, being equivalent to
Add the glue area between front cover 200 and vibrating diaphragm 310, so as to effectively increase glued fastness between the two, reaches depth waterproof
Purpose, while the acoustical behavior of product will not be reduced.
Specifically, front cover 200 includes opposite and spaced roof 250 and from the side of roof 250 with vibrating diaphragm 310
The side wall 260 that edge extends towards the bending of 100 direction of frame, the one end of side wall 260 far from roof 250 is bottom surface 210, and roof 250 passes through
It wears and offers out acoustic aperture 270.When speaker operation, sound is spread out of outward from acoustic aperture 270 out.
Preferably, flange 312 has the second of the first edge 3121 connecting with adhesive portion 311 and separate adhesive portion 311
Edge 3122, the distance between first edge 3121 and second edge 3122 L are greater than or equal to 0.05mm.
As a preferred embodiment of the present embodiment, the distance between first edge 3121 and second edge 3122 L exist
Between 0.05mm-0.1mm.
Preferably, bottom surface 210 and bonding plane 3111 are annular, and adhesive-layer 500, which rounds, seals front cover 200 and vibrating diaphragm
310, it is conducive to guarantee waterproof sealing effect.
Preferably, multiple flange 312 are set around 311 periphery of adhesive portion and are spaced apart from each other setting.Specifically, adhesive portion 311
3113 He of the 5th edge that the third edge 3111 and the 4th edge 3112 and interval being oppositely arranged with interval are oppositely arranged
6th edge 3114, flange 312 include that fold is set to first flange 3123 at third edge 3111, fold is set to the 4th side
Second flange 3124 of edge 3112, fold are set to the third flange 3125 at the 5th edge 3113, fold is set to the 6th edge
3114 the 4th flange 3126.Between first flange 3123, the second flange 3124, third flange 3125 and the 4th flange 3126 mutually
Be not connected to, the clamping matching at 100 diagonal position of front cover 200 and frame carried out keeping away position in this way, being primarily to facilitate, so as to
Under the premise of not influencing front cover 200 and the assembly of frame 100, the waterproof effect of front cover 200 and vibrating diaphragm 310 is improved as much as possible.
Preferably, bottom surface 210 is plane, may make the relatively simple for structure of front cover 200 in this way, easily fabricated.
Preferably, bonding plane 3111 is plane.In this way, may make the relatively simple for structure of vibrating diaphragm 310, it is easily fabricated.
Preferably, flange 312 and the interval of extended surface 130 are arranged, and sealant 600 is also filled up in flange 312 and extended surface 130
Between.
Preferably, frame 100 also has one end from extended surface 130 far from supporting surface 110 towards far from accommodating chamber 120
The epitaxial surface 140 that direction bending extends, sealant 600 also fill up between epitaxial surface 140 and lateral surface 220.Preferably, viscose glue
Layer 500 and sealant 600 are made of identical marine glue, in this way, being conducive to reduce desired material in loudspeaker production process
Type.
Preferably, in process of production, after front cover 200 and 310 gluing of vibrating diaphragm, edge is greater than 200 shape of front cover to loudspeaker
(unilateral > 0.05mm or more) cuts off extra 310 material of vibrating diaphragm, is formed with more than the trimming for being used to prepare flange 312 on vibrating diaphragm 310
Film；After front cover 200 and vibrating diaphragm 310 are assemblied in frame 100, turn down film more than trimming to form flange 312, in front cover 200
Marine glue is filled between frame 100 to form sealant 600 to prepare.Herein, for sealing 310 flange 312 of vibrating diaphragm and front cover
The sealant of 200 lateral surfaces 220 and sealant for sealing frame 100 and 200 lateral surface 220 of front cover are in same step operation
Preparation is formed, conducive to the production technology for simplifying loudspeaker.It of courses, in concrete application, as the embodiment of substitution, can also incite somebody to action
For sealing 310 flange 312 of vibrating diaphragm with the sealant of 200 lateral surface 220 of front cover and for sealing outside frame 100 and front cover 200
The preparation of the sealant of side 220 is divided into two independent step operations and carries out, such as: it is glued in front cover 200 and vibrating diaphragm 310 and
Film more than trimming can be turned down to form flange 312, and pass through waterproof after film more than formation trimming after excision 310 excess stock of vibrating diaphragm
Glue sticking flange 312 and lateral surface 220, the sealing for sealing 310 flange 312 and 200 lateral surface 220 of front cover of vibrating diaphragm is made
Glue；Sealant for sealing frame 100 and 200 lateral surface 220 of front cover is still assemblied in frame 100 in front cover 200 and vibrating diaphragm 310
After upper, prepare by filling marine glue between front cover 200 and frame 100 to be formed.
Further, the present embodiment additionally provides a kind of mobile terminal device comprising shell and above-mentioned loudspeaker,
Loudspeaker is installed in shell.Mobile terminal device provided in this embodiment, due to using above-mentioned loudspeaker, therefore, it can be
Under the premise of not reducing product acoustical behavior, the depth waterproof performance of product is improved.
Preferably, mobile terminal device is mobile phone or tablet computer or mp3 or mp4 or mp5, mobile phone, plate
Computer, mp3, mp4, mp5 can not reduce product acoustical behavior using the structural design scheme of loudspeaker in the present embodiment
Under the premise of, improve the depth waterproof performance between front cover 200 and vibrating diaphragm 310.
Embodiment two:
Referring to Fig.1 shown in 1-13, loudspeaker provided in this embodiment, the difference with embodiment one essentially consists in front cover 200
Structure it is different, be embodied in: in the present embodiment, the bottom surface 210 of front cover 200 is equipped with several grooves being spaced apart
230, adhesive-layer 500 is further filled between groove 230 and bonding plane 3111, and adhesive-layer 500, which specifically includes, is filled in bonding
The first adhesive-layer 510 between face 3111 and bottom surface 210 and the second adhesive-layer being filled between bonding plane 3111 and groove 230
520.Groove 230 is specifically from bottom surface 210 towards the recessed formation in direction far from adhesive portion 311.In the present embodiment, vibrating diaphragm 310 passes through
In front cover 200 for groove 230 to be arranged on the bottom surface 210 Nian Jie with vibrating diaphragm 310, in this way, front cover 200 can be further increased
Local glue amount between vibrating diaphragm 310 is equivalent to the glue area further increased in a disguised form between front cover 200 and vibrating diaphragm 310, from
And glued fastness between the two can be effectively increased, achieve the purpose that further increase depth waterproof performance, while will not drop
The acoustical behavior of low product.
Preferably, groove 230 can be formed in bottom surface 210 in such a way that annular knurl is processed, alternatively, groove 230 can also pass through
Formed in mould mode is shaped on front cover 200.
Preferably, the depth h of groove 230 is 0.01mm~0.1mm.Groove 230 has the groove bottom far from bottom surface 210,
The depth h of groove 230 refers specifically to groove bottom the distance between to bottom surface 210.Herein, the depth h setting of groove 230 is existed
0.01mm~0.1mm not only can reach the purpose for increasing local glue amount between front cover 200 and vibrating diaphragm 310, but also be unlikely to because of groove
230 setting influences the structural rigidity of front cover 200, while being additionally favorable for being manufactured for groove 230.It of courses, in concrete application,
According to the difference of front cover 200, the depth of groove 230 is also not necessarily limited to this range.
Preferably, bottom surface 210 has outer ring edge 211 and inner annular edge 212, and all grooves 230 are divided at least two circles
It surround and is set between outer ring edge 211 and the inner annular edge 212, and in each grooves 230 of at least two circles, a circle is appointed
Groove 230 of anticipating projects projection of each groove 230 enclosed with other one on outer ring edge 211 on outer ring edge 211
It is not overlapped at least partly, i.e., inside and outside two circle is all at least partly arranged in a staggered manner in inside and outside opposite each groove 230, in this way, being conducive to make
It obtains the inside and outside two circle increased glue amounts of groove 230 and is being upwardly formed complementary relationship around side, so that the increased part of each groove 230
Glue amount, which can level off to, connects and composes a circumference, and then is conducive to improve the depth waterproof performance between front cover 200 and vibrating diaphragm 310.
It of courses, in concrete application, as the embodiment of substitution, all grooves 230 can also be only divided into a ring around being set to
Between outer ring edge 211 and inner annular edge 212, increase local glue amount between front cover 200 and vibrating diaphragm 310 in this way, also can achieve
Purpose, only effect is slightly poor.
As a preferred embodiment of the present embodiment, all grooves 230 are divided into three rings around being set to outer annular edge edge
Between 211 and inner annular edge 212, in each groove 230 of any two circle, any one groove 230 of a circle is at outer ring edge 211
On projection and projection of each groove 230 on outer ring edge 220 that other one encloses it is at least partly not be overlapped, using the distribution side
Formula can make glued fastness between the increase front cover 200 and vibrating diaphragm 310 that obtain, mention under the premise of guaranteeing 200 structural rigidity of front cover
The effect highly significant of high depth waterproof performance.It of courses, the circle number of groove 230 is not limited to three circles, can basis in concrete application
The width of bottom surface 210 corresponds to optimization design.
In addition to above-mentioned difference, the other structures of loudspeaker and mobile terminal device provided in this embodiment can refer to implementation
Example one corresponds to optimization design, and this will not be detailed here.
Embodiment three:
Referring to Fig.1 shown in 4 and Figure 15, loudspeaker and mobile terminal device provided in this embodiment, the area with embodiment two
The set-up mode for not essentially consisting in groove 230 is different, is embodied in: in the present embodiment, groove 230 is to surround along bottom surface 210
The annular recess for being directed around setting and being arranged at intervals between outer ring edge 211 and inner annular edge 212, adhesive-layer are further filled out
It fills between annular recess and adhesive portion.Using the plan of establishment of annular recess in the present embodiment, it also can reach and further increase
The purpose of local glue amount, raising depth waterproof performance between front cover 200 and vibrating diaphragm, while the acoustics of product will not be reduced
Energy.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to protection model of the invention
It encloses.
Claims (9)
1. a kind of loudspeaker, including the frame with accommodating space and it is contained in the vibrational system of the accommodating space, it is described
Vibrational system includes the vibrating diaphragm for being fixed on the frame, and the loudspeaker further includes the front cover for being stacked at the vibrating diaphragm, the vibration
Film is set between the frame and the front cover, and the front cover includes the bottom surface opposite with the vibrating diaphragm and the bottom surface phase
Pair top surface and the lateral surface that is connected between the top surface and the bottom surface, which is characterized in that the frame includes and institute
It states the supporting surface of bottom surface face and is bent from the side far from the accommodating space of the supporting surface towards the front cover direction
The extended surface of extension, the extended surface is opposite with the lateral surface and interval is arranged；The vibrating diaphragm includes being erected at the support
Adhesive portion between face and the bottom surface and turn down the flange to be formed from the adhesive portion edge, the adhesive portion have with it is described
Bottom surface interval and the bonding plane being oppositely arranged, the flange between the extended surface and the lateral surface and with the outside
Face interval setting, the loudspeaker further include the adhesive-layer being located between the bonding plane and the bottom surface and are filled in
Sealant between the lateral surface and the flange.
2. loudspeaker according to claim 1, which is characterized in that the flange has first connect with the adhesive portion
The second edge at edge and the separate adhesive portion, the distance between the first edge and the second edge are greater than or equal to
0.05mm。
3. loudspeaker according to claim 2, which is characterized in that between the first edge and the second edge away from
From between 0.05mm-0.1mm.
4. loudspeaker according to claim 1-3, which is characterized in that the flange is set with the extension face interval
It sets, the sealant also fills up between the flange and the extended surface.
5. loudspeaker according to claim 4, which is characterized in that multiple flange be set around the bonding plane periphery and
It is spaced apart from each other setting.
6. loudspeaker according to claim 4, which is characterized in that the bottom surface is plane；Alternatively,
The bottom surface is equipped with groove, and the adhesive-layer is further filled between the groove and the bonding plane.
7. loudspeaker according to claim 6, which is characterized in that the bonding plane is plane.
8. loudspeaker according to claim 4, which is characterized in that the front cover includes opposite with the vibrating diaphragm and interval is set
The roof set and the side wall extended from the edge of the roof towards frame direction bending, the side wall is far from the top
One end of wall is the bottom surface, and the roof, which runs through, offers out acoustic aperture.
9. loudspeaker according to claim 1, which is characterized in that the bottom surface and the bonding plane are annular.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/093992 WO2021000096A1 (en) | 2019-06-29 | 2019-06-29 | Speaker |
| CNPCT/CN2019/093992 | 2019-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110267176A true CN110267176A (en) | 2019-09-20 |
Family
ID=67924691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910605986.8A Pending CN110267176A (en) | 2019-06-29 | 2019-07-05 | Loudspeaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110267176A (en) |
| WO (1) | WO2021000096A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112073847A (en) * | 2020-08-27 | 2020-12-11 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN112492459A (en) * | 2020-12-09 | 2021-03-12 | 共达电声股份有限公司 | Loudspeaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112073847A (en) * | 2020-08-27 | 2020-12-11 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| WO2022041431A1 (en) * | 2020-08-27 | 2022-03-03 | 瑞声声学科技(深圳)有限公司 | Sound-producing device |
| CN112492459A (en) * | 2020-12-09 | 2021-03-12 | 共达电声股份有限公司 | Loudspeaker |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021000096A1 (en) | 2021-01-07 |
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Application publication date: 20190920 |