CN111629288B - Loudspeaker box - Google Patents
Loudspeaker box Download PDFInfo
- Publication number
- CN111629288B CN111629288B CN202010377001.3A CN202010377001A CN111629288B CN 111629288 B CN111629288 B CN 111629288B CN 202010377001 A CN202010377001 A CN 202010377001A CN 111629288 B CN111629288 B CN 111629288B
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- cavity
- leakage channel
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
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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
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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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention provides a loudspeaker box, which comprises a box body and a sounding monomer, wherein the sounding monomer comprises a shell, an upper sound film and a lower sound film which are arranged on the shell, the upper sound film, the lower sound film and the shell are arranged in an enclosing manner to form a first cavity, the shell comprises a main body part fixedly connected with the upper sound film and the lower sound film and a connecting table which is formed by protruding and extending outwards from the main body part, the box body comprises a supporting part and a convex block, the supporting part and the convex block are provided with a second cavity, the sounding monomer is fixed on the convex block through the connecting table, the shell is provided with a first leakage channel communicated with the first cavity, the box body is provided with a second leakage channel communicated with the second cavity, the first leakage channel is communicated with the second leakage channel to form a rear cavity leakage channel, and the first cavity is communicated with the second cavity through the rear cavity leakage channel; the lug, the lower sound film and the outer wall are arranged in an enclosing mode to form a front cavity, and a cutting groove for communicating the front cavity with the outside is arranged on the lug in a penetrating mode. The loudspeaker box provided by the invention increases the vibration area of the sounding monomer, and can offset the self vibration, thereby improving the sounding quality.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, in particular to a loudspeaker box.
[ background of the invention ]
The loudspeaker in the prior art generally contains the sounding monomer in the box, and the sounding monomer only has a single-sided sound film, so that the sounding is not loud due to the small vibration area, and meanwhile, the single-sided sound film is not beneficial to eliminating self vibration, so that the sounding quality is influenced.
Therefore, it is necessary to provide a speaker box to solve the above problems.
[ summary of the invention ]
The invention aims to provide a loudspeaker box which has the advantages of large vibration area, capability of offsetting self vibration and small volume.
The technical scheme of the invention is as follows:
the invention provides a loudspeaker box, which comprises a box body and a sounding monomer arranged outside the box body, wherein the sounding monomer comprises a shell with a hollow interior and two open ends, and an upper sound film and a lower sound film which are respectively arranged at two ends of the shell, the upper sound film, the lower sound film and the shell are encircled to form a first cavity, the shell comprises a main body part fixedly connected with the upper sound film and the lower sound film, and a connecting table which is formed by protruding and extending from the surface of the main body part far away from the first cavity towards the direction far away from the first cavity, the box body comprises a supporting part with a second cavity, the supporting part comprises an outer wall arranged opposite to the lower sound film at an interval, and a convex block which is formed by extending towards the connecting table along the outer wall of the supporting part towards the direction far away from the second cavity, and the sounding monomer is fixed on the convex block through the connecting table, the shell is provided with a first leakage channel penetrating through the main body part and the connecting platform, the first leakage channel is communicated with the first cavity, the box body comprises a second leakage channel penetrating through the lug and communicated with the second cavity, the first leakage channel is communicated with the second leakage channel to form a rear cavity leakage channel, and the first cavity is communicated with the second cavity through the rear cavity leakage channel; the lug, the lower sound film and the outer wall are arranged in an enclosing mode to form a front cavity, and a cutting groove for communicating the front cavity with the outside is arranged on the lug in a penetrating mode.
As an improvement, the cutting groove is provided with at least two cutting grooves which are arranged at intervals.
As an improvement, at least two of the slots extend to the end face where the bump is fixed with the connecting table and divide the bump into a plurality of projecting walls spaced from each other, and the number of the slots is equal to the number of the projecting walls.
As an improvement, a first sub-channel penetrating through the main body part along a vertical vibration direction is arranged on the main body part, a first opening part is arranged at the joint of the connecting platform and the bump, the first opening part is recessed along the vibration direction and away from the bump to form a second sub-channel communicated with the first sub-channel, and the first sub-channel is communicated with the second sub-channel to form the first leakage channel.
As an improvement, a second opening portion corresponding to the first opening portion is formed on the bump, and a projection of the second opening portion along the vibration direction completely overlaps with a projection of the first opening portion along the vibration direction.
As an improvement, the connection platform with the lug passes through screw fixed connection, be equipped with first spiro union portion on the connection platform, be equipped with second spiro union portion on the lug, first spiro union portion with second spiro union portion corresponds the setting, the screw respectively with first spiro union portion, second spiro union portion so that connection platform with lug fixed connection.
As an improvement, the first screw connection portion is located on both sides of the first opening portion, and the second screw connection portion is located on both sides of the second opening portion.
As an improvement, a sealing element is arranged between the connecting platform and the convex block, and a hole position corresponding to the first screwed part and a groove position corresponding to the first perforated part are arranged on the sealing element.
As an improvement, the main body portion includes an upper boss located on a side of the connecting platform close to the upper sound diaphragm and a lower boss located on a side of the connecting platform close to the lower sound diaphragm, and the lower boss is disposed opposite to a surface of the boss close to the front cavity.
As an improvement, the speaker box further includes a first dome fixedly connected to the upper sound film and a second dome fixedly connected to the lower sound film.
The invention has the beneficial effects that: by arranging the sound film with symmetrical double surfaces, the sound generating area is increased, so that the sound generating loudness is improved, the self vibration can be offset, and the sound generating quality is improved; the box adopts local lug as the free seal structure of support sound production, has practiced thrift the space of box, has reduced the volume of box, and extensive applicability is extensive.
[ description of the drawings ]
Fig. 1 is a schematic perspective view of a speaker box according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an exploded view of a speaker box according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an exploded view of a speaker box according to an embodiment of the present invention;
fig. 4 is a schematic front view of a sound generating unit in a speaker box according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a rear structure of a sound generating unit in a speaker box according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 4;
FIG. 7 is a cross-sectional view taken along line C-C in FIG. 4
Fig. 8 is a cross-sectional view taken along line B-B of fig. 1.
[ detailed description ] embodiments
The invention is further described with reference to the following figures and embodiments.
It should be noted that all directional indicators (such as upper, lower, left, right, front, back, inner, outer, top, bottom … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indicator is changed accordingly.
It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Referring to fig. 1, fig. 1 is a schematic perspective view of a speaker box according to an embodiment of the present invention, and a speaker box 100 according to an embodiment of the present invention includes a box body 10 and a sound generating unit 20, wherein the sound generating unit 20 is disposed outside the box body 10 and detachably connected to the box body 10.
Referring to fig. 1, 2-5, the sounding unit 20 includes a hollow casing 21 with two open ends, and an upper sound film 22 and a lower sound film 23 mounted at the upper and lower ends of the casing 21 respectively for generating sound by vibration, the upper sound film 22, the lower sound film 23 and the casing 21 enclose a first cavity 24, and a magnetic circuit 90 for driving the upper sound film 22 and the lower sound film 23 to generate sound by vibration is disposed in the first cavity 24.
Referring to fig. 2 and 7, in the present embodiment, a supporting frame 213 extending toward the first cavity 24 and used for supporting the magnetic circuit system 90 is disposed inside the casing 21; the magnetic circuit system 90 comprises a clamping plate 91 fixed on the supporting frame 213, the clamping plate 91 comprises a first clamping plate 911 positioned at the middle position, a second clamping plate 912 extending from the edge of the first clamping plate 911 to the upper sound film 22 in a bending way, and a third clamping plate 913 horizontally extending from one end of the second clamping plate 912 far away from the first clamping plate 911 to the inner wall of the shell 21, and the third clamping plate 913 is fixed on the supporting frame 213; the first clamping plate 911 and the second clamping plate 912 enclose an accommodating cavity 914, and the magnetic circuit system 90 further includes a first magnetic steel 93 accommodated in the accommodating cavity 914 and arranged at an interval with the second clamping plate 912 to form a first magnetic gap 915, and a second magnetic steel 94 fixed to the third clamping plate 913 and arranged at an interval with the second clamping plate 912 to form a second magnetic gap 916; further, the speaker box 100 further includes a first voice coil 31 inserted in the first magnetic gap 915 and a second voice coil 32 inserted in the second magnetic gap 916, the first voice coil 31 is fixed to the upper diaphragm 22 through the bobbin 33 to drive the upper diaphragm 22 to generate sound, and the second voice coil 32 is fixed to the lower diaphragm 23 through the bobbin 33 to drive the lower diaphragm 23 to generate sound.
Further, the housing 21 includes a main body portion 210 fixedly connected to the upper sound diaphragm 22 and the lower sound diaphragm 23, and a connection platform 211 formed by protruding and extending from a surface of the main body portion 210 away from the first cavity 24 toward a direction away from the first cavity 24, a first leakage channel 212 penetrating through the main body portion 210 and the connection platform 211 is provided on the housing 21, and the first leakage channel 212 is communicated with the first cavity 24.
The upper sound film 22 and the lower sound film 23 of the present embodiment are symmetrically arranged, so that not only is the vibration area increased, the sound production loudness is improved, but also the self vibration can be offset, and the sound production quality is improved. The sound generating unit 20 with the double-sided sound film can be applied to automobile doors, automobile hand-drawing boxes, desktop sound boxes and the like.
Referring to fig. 1, 3 and 8, the case 10 includes a support portion 11 having a second cavity 12, the support portion 11 includes an outer wall 111 opposite to the lower sound diaphragm 23, and a protrusion 112 formed along the outer wall 111 of the support portion 11 to be away from the second cavity 12 and to be directed toward the connection platform 211, the sound unit 20 is fixed to the protrusion 112 through the connection platform 211, the support portion 11 further includes a second leakage channel 113 penetrating the protrusion 112 and communicating with the second cavity 12, the first leakage channel 212 communicates with the second leakage channel 113 to form a rear cavity leakage channel 30, and the first cavity 24 communicates with the second cavity 12 through the rear cavity leakage channel 30; the protrusion 112, the lower sound film 23 and the outer wall 111 are enclosed to form the front cavity 40.
The box 10 of the embodiment adopts the local convex block 112 as the sealing structure for supporting the sounding single body 20, so that the space of the box 10 is saved, the volume of the box 10 is reduced, and the applicability is wide. Further, referring to fig. 1 to 3, the main body 210 includes an upper projection 2101 formed to extend partially upward along an inner wall of the connection platform 211, and a lower projection 2102 formed to extend partially downward along an inner wall of the connection platform 211, wherein the lower projection 2102 is disposed opposite to a surface of the projection 112 near the front cavity 40.
Further, referring to fig. 2 to 7, the speaker box 100 further includes a first dome 50 fixedly connected to the upper sound film 22 and a second dome 60 fixedly connected to the lower sound film 23. Wherein, the inner edge of the upper sound film 22 is connected with the first dome 50, the outer edge of the upper sound film 22 is connected with the upper boss 2101, the inner edge of the lower sound film 23 is connected with the second dome 60, and the outer edge of the lower sound film 23 is connected with the lower boss 2102.
Further, referring to fig. 1 and 3, the supporting portion 11 is a column structure, and the protrusion 112 is an arc structure. A slot 114 is formed through the protrusion 112 to communicate the front chamber 40 with the outside. The cutting slots 114 are provided in at least two. At least two cutting slots 114 are arranged at intervals, the cutting slots 114 can partially extend from the end face of the lug 112 connected with the connecting platform 211 to the direction close to the outer wall 111, and also can partially extend from the end face of the lug 112 connected with the connecting platform 211 to the outer wall 111, when the cutting slots 114 extend from the end face of the lug 112 connected with the connecting platform 211 to the outer wall 111, the lug 112 is divided into a plurality of convex walls which are arranged at intervals, and the number of the cutting slots 114 is equal to the number of the convex walls.
In one embodiment, referring to fig. 3, two slots 114 extend to the end surface of the bump 112 fixed to the connecting platform 211, and divide the bump 112 into a first protruding wall 1121 and a second protruding wall 1122 which are spaced apart from each other.
Referring to fig. 6 and 8, the connection stage 211 includes a first connection portion 2111 corresponding to the first protrusion wall 1121 and a second connection portion 2112 corresponding to the second protrusion wall 1122. The first connection portion 2111 is fixedly connected to the first protruding wall 1121 through a screw 70, a first opening portion 1a and a first screw portion 1b located at two sides of the first opening portion 1a are disposed at a connection position of the first connection portion 2111 and the first protruding wall 1121, the first opening portion 1a is recessed along a vibration direction and a direction away from the first protruding wall 1121 to form a second sub-channel 2122, the main body portion 210 is provided with a first sub-channel 2121 penetrating through the main body portion in a vertical vibration direction, the first sub-channel 2121 is communicated with the second sub-channel 2122 to form a first leakage channel 212, and the first leakage channel 212 is L-shaped.
Referring to fig. 5 and 6, the first protrusion wall 1121 includes a second opening portion 2a corresponding to the first opening portion 1a and second screw portions 2b located at both sides of the second opening portion 2a, a projection of the second opening portion 2a along the vibration direction completely overlaps a projection of the first opening portion 1a along the vibration direction, and the second opening portion 2a communicates with the second cavity 12 to form a second leakage path 113. The screw 70 is sequentially fixed to the first screw connection portion 1b and the second screw connection portion 2b to fixedly connect the first connection portion 2111 and the first protrusion wall 1121, so that the connection between the box 10 and the sound generating unit 20 is achieved.
In the present embodiment, the number of the projecting walls corresponds to the number of the connecting portions. The structure of the second connection portion 2112 is the same as that of the first connection portion 2111, and the structure of the second protrusion wall 1122 is the same as that of the first protrusion wall 1121, so for brevity, the details are not repeated here.
Referring to fig. 1, 3 and 8, the speaker box 100 further includes a sealing member 80, the sealing member 80 of the present embodiment is disposed at a connection portion between the box body 10 and the sound generating unit 20, the number of the sealing members 80 corresponds to the number of the protruding walls, the sealing member 80 of the present embodiment includes a first sealing member 81 disposed between the first connection portion 2111 and the first protruding wall 1121 and a second sealing member 82 disposed between the second connection portion 2112 and the second protruding wall 1122, and the first sealing member 81 and the second sealing member 82 enable a contact portion between the sound generating unit 20 and the box body 10 to be connected in a sealing manner. The first sealing member 81 is provided with a first hole position 3b corresponding to the first screw portion 1b and a first groove position 3a corresponding to the first hole portion 1 a. When the first connection portion 2111 is connected to the first protruding wall 1121, the screw 70 sequentially passes through the first screw connection portion 1b, the first hole position 3b and the second screw connection portion 2b, so that the first connection portion 2111 is fixedly connected to the first protruding wall 1121. The structure of the second sealing element 82 of the present embodiment is the same as that of the first sealing element 81, and for the sake of brevity, the details are not repeated herein. Alternatively, the seal 80 may be foam, rubber pad, or the like.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a loudspeaker box, its characterized in that, loudspeaker box includes the box and locates the outside sound production monomer of box, sound production monomer include inside cavity and both ends open-ended casing and install respectively last sound membrane and lower sound membrane at casing both ends, go up the sound membrane down enclose with the casing and establish formation first cavity, the casing include with go up sound membrane and sound membrane fixed connection's main part down and keep away from the surface orientation that the first cavity was kept away from to the main part the first cavity direction protrusion extends and forms the connection platform, the box is including the supporting part that has the second cavity, the supporting part include with the relative interval setting of lower sound membrane outer wall with follow the outer wall of supporting part is to keeping away from the second cavity and following the orientation connect the lug that the platform extends and forms, sound production monomer passes through connect the platform and be fixed in the lug, the shell is provided with a first leakage channel penetrating through the main body part and the connecting platform, the first leakage channel is communicated with the first cavity, the box body comprises a second leakage channel penetrating through the lug and communicated with the second cavity, the first leakage channel is communicated with the second leakage channel to form a rear cavity leakage channel, and the first cavity is communicated with the second cavity through the rear cavity leakage channel; the lug, the lower sound film and the outer wall are arranged in an enclosing mode to form a front cavity, and a cutting groove for communicating the front cavity with the outside is arranged on the lug in a penetrating mode.
2. A loudspeaker enclosure according to claim 1, wherein at least two of the slots are provided, at least two of the slots being spaced from one another.
3. A loudspeaker enclosure according to claim 2, wherein at least two of said slots extend to the end face of the boss to which the connection pad is secured and divide the boss into a number of spaced projecting walls, the number of slots being equal to the number of projecting walls.
4. The speaker box as claimed in claim 1, wherein the main body has a first sub-channel extending therethrough in a vertical direction, a first opening portion is formed at a connection portion of the connecting platform and the bump, the first opening portion is recessed in a direction away from the bump in the vibration direction to form a second sub-channel communicating with the first sub-channel, and the first sub-channel communicates with the second sub-channel to form the first leakage channel.
5. The speaker box of claim 4, wherein the protrusion defines a second opening corresponding to the first opening, and a projection of the second opening in the vibration direction completely overlaps a projection of the first opening in the vibration direction.
6. The speaker box according to claim 5, wherein the connection platform is fixedly connected to the protrusion through a screw, the connection platform is provided with a first screw connection portion, the protrusion is provided with a second screw connection portion, the first screw connection portion and the second screw connection portion are correspondingly arranged, and the screw is respectively fixed to the first screw connection portion and the second screw connection portion so as to fixedly connect the connection platform to the protrusion.
7. The speaker cabinet as claimed in claim 6, wherein the first screw connection portions are located at both sides of the first opening portion, and the second screw connection portions are located at both sides of the second opening portion.
8. The speaker box of claim 7, wherein a sealing member is disposed between the connecting platform and the protrusion, and the sealing member has a hole corresponding to the first threaded portion and a slot corresponding to the first hole.
9. A loudspeaker enclosure according to claim 1, wherein the main body portion comprises an upper boss on a side of the connection pad adjacent the upper diaphragm and a lower boss on a side of the connection pad adjacent the lower diaphragm, the lower boss being disposed opposite the surface of the boss adjacent the front cavity.
10. A loudspeaker enclosure according to claim 1, further comprising a first dome fixedly connected to the upper diaphragm and a second dome fixedly connected to the lower diaphragm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377001.3A CN111629288B (en) | 2020-05-07 | 2020-05-07 | Loudspeaker box |
| PCT/CN2020/090478 WO2021223261A1 (en) | 2020-05-07 | 2020-05-15 | Loudspeaker box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377001.3A CN111629288B (en) | 2020-05-07 | 2020-05-07 | Loudspeaker box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111629288A CN111629288A (en) | 2020-09-04 |
| CN111629288B true CN111629288B (en) | 2021-11-05 |
Family
ID=72272783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010377001.3A Active CN111629288B (en) | 2020-05-07 | 2020-05-07 | Loudspeaker box |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111629288B (en) |
| WO (1) | WO2021223261A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383854B (en) * | 2020-11-30 | 2022-05-03 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound producing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3181730U (en) * | 2012-11-27 | 2013-02-21 | 進一 小田切 | Speaker device |
| CN104168526A (en) * | 2014-07-31 | 2014-11-26 | 美律电子（惠州）有限公司 | Electric-acoustic device with movable passive radiator |
| CN109040921A (en) * | 2018-07-26 | 2018-12-18 | 维沃移动通信有限公司 | A kind of vocal structure and terminal |
| CN210274507U (en) * | 2019-08-17 | 2020-04-07 | 中山市汇旭电子科技有限公司 | Double-track phase-inverted mini sound box |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102333270B (en) * | 2011-07-15 | 2015-06-24 | 瑞声声学科技(深圳)有限公司 | Sounder |
| CN103209377B (en) * | 2013-03-19 | 2016-02-17 | 歌尔声学股份有限公司 | Multifunction speaker |
| WO2018187663A1 (en) * | 2017-04-07 | 2018-10-11 | Correlated Magnetics Research, Llc | Loudspeaker magnet and earphone assembly |
| CN108513230B (en) * | 2018-06-25 | 2024-02-09 | 歌尔股份有限公司 | Sound producing device and portable terminal |
| CN209390307U (en) * | 2018-12-30 | 2019-09-13 | 瑞声科技(新加坡)有限公司 | Sound film and the loudspeaker for using the sound film |
| CN209593749U (en) * | 2019-04-01 | 2019-11-05 | 深圳市信维声学科技有限公司 | A kind of Bidirectional sounding loudspeaker |
-
2020
- 2020-05-07 CN CN202010377001.3A patent/CN111629288B/en active Active
- 2020-05-15 WO PCT/CN2020/090478 patent/WO2021223261A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3181730U (en) * | 2012-11-27 | 2013-02-21 | 進一 小田切 | Speaker device |
| CN104168526A (en) * | 2014-07-31 | 2014-11-26 | 美律电子（惠州）有限公司 | Electric-acoustic device with movable passive radiator |
| CN109040921A (en) * | 2018-07-26 | 2018-12-18 | 维沃移动通信有限公司 | A kind of vocal structure and terminal |
| CN210274507U (en) * | 2019-08-17 | 2020-04-07 | 中山市汇旭电子科技有限公司 | Double-track phase-inverted mini sound box |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021223261A1 (en) | 2021-11-11 |
| CN111629288A (en) | 2020-09-04 |
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