CN112468910A - Loudspeaker box and assembling process thereof - Google Patents

Loudspeaker box and assembling process thereof Download PDF

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Publication number
CN112468910A
CN112468910A CN202011507781.5A CN202011507781A CN112468910A CN 112468910 A CN112468910 A CN 112468910A CN 202011507781 A CN202011507781 A CN 202011507781A CN 112468910 A CN112468910 A CN 112468910A
Authority
CN
China
Prior art keywords
base
fixed
cover
frame
arm
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
Application number
CN202011507781.5A
Other languages
Chinese (zh)
Inventor
任璋
钟志威
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Microtech Changzhou Co Ltd
AAC Optoelectronic Changzhou Co Ltd
Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Original Assignee
AAC Optoelectronic Changzhou Co Ltd
Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AAC Optoelectronic Changzhou Co Ltd, Science and Education City Branch of AAC New Energy Development Changzhou Co Ltd filed Critical AAC Optoelectronic Changzhou Co Ltd
Priority to CN202011507781.5A priority Critical patent/CN112468910A/en
Publication of CN112468910A publication Critical patent/CN112468910A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006Interconnection of transducer parts
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers

Abstract

The invention provides a loudspeaker box, which comprises a sound production single body with a vibration system, a magnetic circuit system and a basin frame, a front cover with an accommodating groove and a rear cover fixed on the front cover, wherein the sound production single body is accommodated in the accommodating groove, the vibration system vibrates along the vibration direction and comprises a vibrating diaphragm fixed on the basin frame, the front cover comprises a base wall for supporting the sound production single body and a plurality of side walls which extend from the edge of the base wall and form the accommodating groove together with the base wall, one side wall of the plurality of side walls is provided with a window communicated with the accommodating groove, the loudspeaker box also comprises a supporting piece fixed on the vibration system, the supporting piece comprises a body clamped between the first vibrating diaphragm and the base wall and a frame which is connected with the body and fixed on the side wall with the window, the body, the sound production single body and the base wall form a first channel together, the frame, the base wall and the side wall with the window form a second channel together, the second channel and the first channel form a, the support piece, the sounding single body, the front cover and the rear cover form a closed rear cavity together. The loudspeaker box of the invention enlarges the space of the rear cavity through the arrangement of the body and the frame, realizes the maximization of the rear cavity and improves the acoustic performance.

Description

Loudspeaker box and assembling process thereof
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, in particular to a loudspeaker box and an assembly process thereof.
[ background of the invention ]
With the rapid development of mobile communication technology in recent years, consumers increasingly use mobile communication devices with voice functions, such as: portable telephones, handheld game devices, portable computers, and the like. The speaker box is used as a voice playing device, and the design of the speaker box directly influences the voice performance of the mobile communication equipment product in the related technology. In order to meet the requirements of product thinning and high sound quality, the loudspeaker box is required to be developed towards the direction of facilitating the realization of thinning and high power as much as possible.
The loudspeaker box in the related art comprises a front cover, a rear cover and a sound generating unit, wherein the rear cover is covered on the front cover and jointly forms an accommodating space, the sound generating unit is accommodated in the accommodating space, and the accommodating space is divided into a front cavity and a rear cavity by the sound generating unit.
However, the front cover and the rear cover of the speaker box in the related art are formed by injection molding, and the sound generating unit is sealed by ultrasonic welding, which requires more volume, so that the volume design of the front cavity and the rear cavity is limited, and the acoustic performance is limited.
Therefore, a new technical solution is needed to solve the above problems.
[ summary of the invention ]
The technical problem to be solved by the invention is to provide a loudspeaker box with a larger back cavity space.
The invention is realized by the following technical scheme: a loudspeaker box comprises a sounding monomer with a vibration system, a magnetic circuit system and a basin frame, a front cover with an accommodating groove and a rear cover fixed on the front cover, wherein the sounding monomer is accommodated in the accommodating groove, the vibration system vibrates along a vibration direction and comprises a first vibrating diaphragm fixed on the basin frame, the front cover comprises a base wall supporting the sounding monomer and a plurality of side walls extending from the edge of the base wall and forming the accommodating groove together with the base wall, one side wall of the side walls is provided with a window communicated with the accommodating groove, the loudspeaker box further comprises a support piece fixed on the vibration system, the support piece comprises a body clamped between the base walls and a frame connected with the body and fixed on the side wall with the window, the body, the sounding monomer and the base wall form a first channel together, the frame, the base wall and the side wall with the window form a second channel together, the second channel and the first channel form a front cavity communicated with the window together, and the support piece, the sounding single body, the front cover and the rear cover form a closed rear cavity together.
Preferably, the body is U-shaped and includes a base plate fixed to the first diaphragm, a connecting plate extending from an inner peripheral edge of the base plate toward a vibration direction away from the first diaphragm, and a fixing plate extending from the connecting plate toward a direction away from the base plate and perpendicular to the vibration direction, the fixing plate being fixed to the base wall.
Preferably, the base plate is U-shaped and includes first arm and second arm, the third arm that extends from the both ends of first arm, the both ends of frame are fixed in respectively the free end that first arm is kept away from to second arm, third arm.
Preferably, the frame includes a base fixed to the side wall provided with the window and having a long and narrow shape, a baffle extending obliquely from an edge of the base located on the long axis, a pair of connecting arms extending from both sides of the base located on the short axis and located on both sides of the baffle, a connecting portion extending from one end of the baffle away from the base in a bent manner, and a fixing portion extending from one end of the connecting arm away from the base and fixed to the body.
Preferably, the fixed connection portion further includes an abutting portion located at the end thereof and extending in a bent manner, and the abutting portion abuts against the base wall.
Preferably, the connecting part is fixed on the basin frame, and one end of the connecting arm, which is far away from the baffle, is fixed on the side wall provided with the window.
Preferably, the side wall provided with the window extends obliquely from the base wall and comprises a protruding wall extending in a direction away from the basin stand, and the window is arranged on the protruding wall.
Preferably, the front cover and the rear cover are made of a metal material.
Preferably, the first diaphragm is annular, and includes a first fixing portion located at the outer ring, a first vibrating portion connected to the first fixing portion, and a second fixing portion located at the inner ring and connected to the first vibrating portion, the substrate of the body is fixed to the first fixing portion of the first diaphragm, and the substrate completely covers the first fixing portion and partially covers the first vibrating portion.
The invention is realized by the following technical scheme: a process for assembling a loudspeaker enclosure, the process comprising the steps of: s1, respectively injection-molding the body and the frame of the support piece, and welding the body and the frame together; s2, assembling the support piece to the front cover, and fixing the connecting part by gluing; s3, assembling the sounding monomer on the support; and S4, assembling the rear cover to the front cover, and fixing the front cover and the rear cover by laser welding or gluing.
The loudspeaker box has the following advantages: the structure of the body and the frame is utilized to fully increase the space of the rear cavity and improve the acoustic performance.
[ description of the drawings ]
FIG. 1 is a perspective assembly view of a loudspeaker enclosure of the present invention;
FIG. 2 is a partial assembly view of the front and back covers of the speaker cabinet of the present invention with the covers open;
FIG. 3 is an exploded perspective view of a sound generating unit of the speaker box of the present invention;
FIG. 4 is an assembled view of the support member of the speaker box of the present invention;
fig. 5 is a sectional view taken along a-a in fig. 1.
[ detailed description ] embodiments
The invention is further described with reference to the following figures and embodiments.
The loudspeaker box of the invention can be applied to portable mobile communication devices, such as electronic products of mobile phones, game machines and the like.
As shown in fig. 1 to 5, a speaker box 1000 according to the present invention includes a sound generating unit 100 having a vibration system 1, a magnetic circuit system 2, and a frame 3, a support member 4 fixed to the sound generating unit 100, and a cover 5 having a housing space. The cover 5 includes a front cover 51 and a rear cover 52 assembled together. The housing space houses the vibration system 1, the magnetic circuit system 2, and the frame 3. The vibration system 1 can vibrate in the vibration direction.
As shown in fig. 3, the vibration system 1 includes a first diaphragm 11, a dome 12, a support 13 supporting the first diaphragm 11 and the dome 12, a pair of elastic pieces 14 connected to both sides of the support 13, a pair of second diaphragms 15 respectively connected to the elastic pieces 14, and a voice coil 16 fixed to the support 13.
The first diaphragm 11 is annular, and includes a first fixing portion 111 located at the outer ring, a first vibrating portion 112 connected to the first fixing portion 111 and recessed toward the direction close to the bracket 13, a second fixing portion 113 located at the inner ring and connected to the first vibrating portion 112, and a first through hole 110 surrounded by the second fixing portion 113. The first diaphragm 11 further includes four fixing legs 1111 extending from four corners of the first fixing portion 111 in a direction approaching the bracket 13 along the vibration direction, the first fixing portion 111 is fixed to the frame 3, and the four fixing legs 1111 are fixed to an outer side surface of the frame 3.
The support 13 includes a substrate 131, a second through hole 130 penetrating through the middle of the substrate 131, a connecting portion 132 extending from the outer periphery of the substrate 131 in a direction away from the first diaphragm 11, and a supporting portion 133 extending from the inner periphery of the substrate 131 in a direction away from the first diaphragm 11. In this embodiment, the connecting portions 132 include two connecting portions, and each connecting portion 132 extends from the substrate 131 on two sides of the short axis, and each connecting portion 132 is provided with a notch 1320.
The dome 12 is fixed to a side of the substrate 131 of the support 13 near the first diaphragm 11. In other embodiments, the dome 12 may also be directly fixed to the second fixing portion 113 of the first diaphragm 11.
The elastic piece 14 includes a first fixing piece 141 fixed to the frame 3, a second fixing piece 142 fixed to the connecting portion 132 of the bracket 13, and a pair of bent connecting pieces 143 connecting the first and second fixing pieces 141, 142. The second fixing piece 142 is fixed to one side of the connecting portion 132 away from the first diaphragm 11. The elastic piece 14 further includes an L-shaped connecting leg 144 extending from the end of the second fixing piece 142 away from the connecting piece 143. In the present embodiment, the elastic pieces 14 are made of FPC material, and the connecting pins 144 include two pins and are located on one of the elastic pieces 14 for electrically connecting with the voice coil 16.
The second diaphragm 15 is fixed to the side of the elastic sheet 14 away from the first diaphragm 11. The second diaphragm 15 includes a second vibrating portion 151 recessed in a direction away from the elastic piece 14, and a first fixing portion 152 and a second fixing portion 153 located at both sides of the second vibrating portion 151 and fixed to the first fixing piece 141 and the second fixing piece 142, respectively. The second diaphragm 15 further includes a notch 154 recessed from the second fixing portion 153 toward the second vibrating portion 151.
The voice coil 16 is fixed to an end of the supporting portion 133 of the bracket 13 away from the first diaphragm 11, and the voice coil 16 includes a pair of leads 161 electrically connected to the connecting pins 144 of the elastic sheet 14.
The magnetic circuit system 2 includes a yoke 21 and a main magnetic portion housed in the yoke 21. The main magnetic part comprises a main magnetic steel 22, four auxiliary magnetic steels 23 fixed on the magnetic yoke 21 and positioned around the main magnetic steel 22, a first pole core 24 assembled on the main magnetic steel 22 and a second pole core 25 assembled on the auxiliary magnetic steel 23, and a magnetic gap 26 is formed between the main magnetic steel 22 and the auxiliary magnetic steel 23. The voice coil 16 is inserted in the magnetic gap 26. The holder 13 is disposed around the main magnetic portion. The second pole piece 25 is fixed on one end of the frame 3 far away from the first diaphragm 11.
In the present embodiment, the main magnet 22 is elongated, and the auxiliary magnet 23 includes a pair of first auxiliary magnets 231 located on both sides of the short axis of the main magnet 22 and a pair of second auxiliary magnets 232 located on both sides of the long axis of the main magnet 22. The first sub magnetic steel 231 has a convex shape including a protrusion 2311, the second pole piece 25 includes a protrusion 251 corresponding to the protrusion 2311, and the yoke 21 includes a protrusion 211 corresponding to the protrusion 2311. The projection 251, the protrusion 2311 and the protrusion 211 are stacked in sequence and are arranged corresponding to the notch 1320 of the bracket 13 and the notch 154 of the second diaphragm 12, so that the size of the main magnetic circuit is increased and the acoustic performance is improved.
As shown in fig. 2, 4 and 5, the support member 4 includes a body 41 fixed to the first diaphragm 11 and a frame 42 fixed to one end of the body 41. The body 41 and the frame 42 are integrally molded by injection molding and then welded together, but in another embodiment, the body 11 and the frame 42 may be integrally molded by injection molding.
The body 41 has a U-shaped frame structure, and includes a base 411 fixed to the first diaphragm 11 of the sound generating unit 100, a connecting plate 412 extending from an inner periphery of the base 411 toward a vibration direction away from the first diaphragm 11, and a fixing plate 413 extending from the connecting plate 412 toward the base 411 and perpendicular to the vibration direction. The substrate 411 is fixed on a side of the first diaphragm 11 away from the bracket 13. The substrate 411 completely covers the first fixing portion 111 of the first diaphragm 11 and partially covers the first vibrating portion 112. The base 411 has a U-shaped structure, which includes a first arm 4111, and a second arm 4112 and a third arm 4113 extending from two ends of the first arm 4111.
The frame 42 has two ends fixed to two free ends of the body 41, and includes a long and narrow base 421, a baffle 422 extending obliquely from an edge of the base 421 on the major axis, a pair of connecting arms 423 extending from two edges of the base 421 on the minor axis, a connecting portion 424 extending from one end of the baffle 422 away from the base 421, and a fixing portion 425 extending from one end of the connecting arm 423 away from the base and fixed thereto. A pair of connecting arms 423 are located on opposite sides of the flap 422, and a securing portion 425 is secured to the free end of the body 41. The fastening portion 425 further includes an abutting portion 4251 located at the end thereof and extending in a bent manner, and the abutting portion 4251 abuts against the base wall 511 of the front cover 51. The connecting arm 425 and the baffle 422 are sealed by gluing. The connecting portion 424 abuts against the frame 3 of the sounding unit 100.
The front cover 51 includes a base wall 511, a plurality of sidewalls extending from an edge of the base wall 511, and a receiving groove 510 formed by the base wall 511 and the plurality of sidewalls. The housing tub 510 houses the vibration system 1, the magnetic circuit system 2, and the frame 3. The base wall 511 supports the vibration system 1, the magnetic circuit system 2 and the basin stand 3. In the present embodiment, the base wall 511 has a rectangular shape, and the plurality of sidewalls include a first sidewall 512, a second sidewall 513, a third sidewall 514, and a fourth sidewall 515 extending from both edges of the base wall 511 located on the major axis, the first and second sidewalls extending perpendicularly from both edges of the base wall 511 located on the minor axis. The third sidewall 514 is perpendicular to the base wall 511. The fourth side wall 515 extends obliquely from the base wall 511 and is provided with a protruding wall 5151 extending away from the tub 3, and the protruding wall 5151 is provided with a window 5150. In this embodiment, the window 5150 has a rectangular shape.
The rear cover 52 includes a flat plate 521. In the present embodiment, the front cover 51 and the rear cover 52 are made of a metal material.
As shown in fig. 5, the body 41 is sandwiched between the first diaphragm 11 and the base wall 511. The fixing plate 413 of the body 41 is fixed to the inner surface of the base wall 511, and the base plate 411 is fixed to the first fixing portion 111 of the first diaphragm 11. The body 41, the sounding monomer 100, and the base wall 511 together form a first channel 410.
Frame 42 is fixed to body 41 and to fourth side wall 515 and base wall 511. The frame 42, the base wall 511 and the fourth side wall 515 together form a second channel 420, the second channel 420 is communicated with the first channel 410 and the window 5150, and the first channel 410 and the second channel 420 together form the front cavity 61.
One end of the base portion 421 away from the body 41 is fixed to the inner surface of the fourth side wall 515, one end of the connecting arm 423 away from the body 41 is fixed to the inner surface of the fourth side wall 515, the connecting portion 424 is fixed to the frame 3, the fixing portions 425 are fixed to both ends of the body 41, and one end of the abutting portion 4251 away from the base portion 421 is fixed to the base wall 511.
The assembly process steps of the loudspeaker enclosure 100 of the present invention are as follows:
s1, respectively injection-molding the body 41 and the frame 42 of the support 4, and welding the body 41 and the frame 42 together;
s2, assembling the support 4 to the front cover 51, the connection part being fixed by gluing;
s3, assembling the sounding monomer 100, and assembling the sounding monomer 100 on the support 4;
s4, the rear cover 52 is assembled to the front cover 51, and the front cover 51 and the rear cover 52 are fixed by laser welding or gluing.
After being assembled, the front cavity 61 of the speaker 100 of the present invention is formed by the body 41, the frame 42, the base wall 511, the fourth side wall 515, and the sound generating unit 1, and the front cavity 61 is communicated with the window 5150. The rear cavity 62 is formed by the body 41, the frame 42, the sound generating unit 1, the base wall 511, the front cover 51 and the rear cover 52. The rear chamber 62 is a sealed space. The space of the rear cavity is enlarged through the arrangement of the body 41 and the frame 42, the rear cavity is maximized, and the acoustic performance is improved. And the front cover 51 and the rear cover 52 made of metal materials can reduce the thickness and meet the requirement of product miniaturization compared with the prior injection molding shell.
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 sound production monomer including having vibration system, magnetic circuit, basin frame, the protecgulum that has the accepting groove and be fixed in the back lid of protecgulum, sound production monomer accept in the accepting groove, vibration system vibrates and including being fixed in along the direction of vibration the first vibrating diaphragm of basin frame, the protecgulum is including supporting sound production monomer's base wall and certainly the edge of base wall extends and with the base wall forms jointly a plurality of lateral walls of accepting groove, be equipped with on one of a plurality of lateral walls with the communicating window of accepting groove, its characterized in that: the loudspeaker box is characterized in that the loudspeaker box further comprises a supporting piece fixed on the vibration system, the supporting piece comprises a first vibrating diaphragm, a body and a connecting portion, the body is arranged between the base walls, the body is fixed on the frame with the side wall of the window, the body, the sounding monomer and the base walls jointly form a first channel, the frame is arranged on the base walls, the side wall with the window jointly forms a second channel, the second channel jointly forms a front cavity communicated with the window with the first channel, and the supporting piece, the sounding monomer, the front cover and the rear cover jointly form a closed rear cavity.
2. A loudspeaker enclosure as claimed in claim 1, wherein: the body is the U-shaped and including being fixed in the base plate of first vibrating diaphragm, certainly the internal periphery of base plate is towards keeping away from the connecting plate that the vibration direction of first vibrating diaphragm extends and certainly the connecting plate is towards keeping away from the base plate and the fixed plate that the direction of perpendicular to vibration direction extends, the fixed plate is fixed in the base wall.
3. A loudspeaker enclosure as claimed in claim 2, wherein: the base plate is U-shaped and includes first arm and second arm, the third arm that extends from the both ends of first arm, the both ends of frame are fixed in respectively the free end that first arm was kept away from to second arm, third arm.
4. A loudspeaker enclosure as claimed in claim 3, wherein: the frame is including being fixed in the lateral wall that is equipped with the window and being elongated base, certainly the base is located the edge slope extension of major axis baffle, certainly the base is located the both sides extension of minor axis and is located a pair of linking arm of baffle both sides, certainly the baffle is kept away from the connecting portion that the one end bending extension of base, certainly the one end extension of keeping away from the base of linking arm is fixed in the rigid coupling portion of body.
5. A loudspeaker enclosure as claimed in claim 4, wherein: the fixed connection part also comprises a bent and extended abutting part positioned at the tail end of the fixed connection part, and the abutting part abuts against the base wall.
6. A loudspeaker enclosure as claimed in claim 5, wherein: the connecting part is fixed on the basin frame, and one end of the connecting arm, which is far away from the baffle, is fixed on the side wall provided with the window.
7. A loudspeaker enclosure as claimed in claim 6, wherein: the side wall provided with the window extends obliquely from the base wall and comprises a protruding wall extending towards the direction far away from the basin frame, and the window is arranged on the protruding wall.
8. A loudspeaker enclosure as claimed in claim 7, wherein: the front cover and the rear cover are made of metal materials.
9. A loudspeaker enclosure as claimed in claim 8, wherein: the first vibrating diaphragm is annular and comprises a first fixing portion located on the outer ring, a first vibrating portion connected with the first fixing portion, and a second fixing portion located on the inner ring and connected with the first vibrating portion, the substrate of the body is fixed on the first fixing portion of the first vibrating diaphragm, and the substrate completely covers the first fixing portion and the first vibrating portion.
10. A process of assembling a loudspeaker enclosure according to any one of claims 1 to 9, wherein: the process comprises the following steps:
s1, respectively injection-molding the body and the frame of the support piece, and welding the body and the frame together;
s2, assembling the support piece to the front cover, and fixing the connecting part by gluing;
s3, assembling the sounding monomer on the support;
and S4, assembling the rear cover to the front cover, and fixing the front cover and the rear cover by laser welding or gluing.
CN202011507781.5A 2020-12-18 2020-12-18 Loudspeaker box and assembling process thereof Pending CN112468910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011507781.5A CN112468910A (en) 2020-12-18 2020-12-18 Loudspeaker box and assembling process thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011507781.5A CN112468910A (en) 2020-12-18 2020-12-18 Loudspeaker box and assembling process thereof

Publications (1)

Publication Number Publication Date
CN112468910A true CN112468910A (en) 2021-03-09

Family

ID=74803809

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011507781.5A Pending CN112468910A (en) 2020-12-18 2020-12-18 Loudspeaker box and assembling process thereof

Country Status (1)

Country Link
CN (1) CN112468910A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140039813A (en) * 2012-09-25 2014-04-02 광원텍(주) Speaker frame and speaker having the same
CN206542569U (en) * 2017-03-06 2017-10-03 瑞声光电科技(常州)有限公司 A kind of loudspeaker
CN208509263U (en) * 2018-08-06 2019-02-15 歌尔科技有限公司 Loudspeaker mould group and sounding device
CN112073849A (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 Loudspeaker box
CN112073850A (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 Loudspeaker box
CN112073852A (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 Loudspeaker box

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140039813A (en) * 2012-09-25 2014-04-02 광원텍(주) Speaker frame and speaker having the same
CN206542569U (en) * 2017-03-06 2017-10-03 瑞声光电科技(常州)有限公司 A kind of loudspeaker
CN208509263U (en) * 2018-08-06 2019-02-15 歌尔科技有限公司 Loudspeaker mould group and sounding device
CN112073849A (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 Loudspeaker box
CN112073850A (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 Loudspeaker box
CN112073852A (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 Loudspeaker box

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