CN105516864A - Multifunctional device having vibration function and sound producing function - Google Patents
Multifunctional device having vibration function and sound producing function Download PDFInfo
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- CN105516864A CN105516864A CN201511033161.1A CN201511033161A CN105516864A CN 105516864 A CN105516864 A CN 105516864A CN 201511033161 A CN201511033161 A CN 201511033161A CN 105516864 A CN105516864 A CN 105516864A
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- housing
- voice coil
- function device
- moulding
- electrical connector
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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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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a multifunctional device having a vibration function and a sound producing function. The multifunctional device comprises a peripheral shell, a vibration system, a magnetic circuit system and an elastic support piece, the magnetic circuit system is supported and fixed through the elastic support piece and is suspended inside the peripheral shell, the vibration system comprises a vibrating diaphragm and a voice coil, the peripheral shell is of metal material, an inner side of the peripheral shell is fixedly provided with a conduction piece, a lead of the voice coil is electrically connected with the conduction piece, the conduction piece is electrically connected with an electrical connecting piece extending to an outer side of the peripheral shell, the electrical connecting piece is conducted with an external circuit, an edge position of the peripheral shell is provided with an injection molding piece of a plastic material which is formed through integral injection molding, the electrical connecting piece is fixed through the injection molding piece, and the injection molding piece does not exceed lateral space of the peripheral shell in a horizontal direction. The multifunctional device provided by the invention can solve in a target manner the problem that adoption of a shell of a metal material easily causes static breakdown, guarantees realization of conduction of internal and external circuits, saves occupied assembling space inside the shell, and improves product performance.
Description
Technical field
The present invention relates to electroacoustic field, be specifically related to a kind of multi-function device with vibrating function and vocal function.
Background technology
Existing mobile terminal electronic installation, for mobile phone, its inside not only needs to assemble can the loudspeaker unit of sounding, considers the needs of some quiet occasions simultaneously, also need assembling vibrating motor to carry out vibrational feedback to user, realize the instantly prompting of incoming call, information etc.But, because Current electronic product is more and more to the future development of lightweight, slimming, if assemble vibration unit and phonation unit on the end product that the assembly spaces such as mobile phone are natively smaller simultaneously, larger space can be taken undoubtedly; In order to address this problem, people meet vibration and sounding two functions, to reduce the space that acoustic element takies by a kind of multi-functional acoustic element of design simultaneously.
The existing multi-function device with vibrating function and vocal function, all needs to design corresponding electric connection structure to realize the conducting of peripheral circuits.In prior art, the moulding of peripheral housing many employings plastic material of this device, now, its electric connection structure still can adopt the structures such as the welding shell fragment of traditional injection moulding class, but, adopt in the product of metal material as peripheral housing at some, if continue to use traditional electric connection mode, to draw outside voice coil leads and by the words of spot welding conducting, the thinner insulating barrier ratio that voice coil leads periphery is used for coated internal metal wirings is easier to be crashed to pieces, now short circuit can be caused, cause electrostatic breakdown, thus cannot continue to use the welding shell fragment of injection moulding class to complete the conducting of vibration-sound generating device and end product circuit.To sum up, be necessary to provide a kind of novel electric connection mode for metal material shell mechanism, under the prerequisite ensureing conducting peripheral circuits, effectively prevent electrostatic breakdown.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of multi-function device with vibrating function and vocal function, change traditional mode by the conducting of injection moulding class welding shell fragment realizing circuit, make it when adopting metal material as peripheral housing, can either effective turning circuit, can prevent from again causing electrostatic breakdown.
To achieve these goals, the present invention by the following technical solutions: a kind of multi-function device with vibrating function and vocal function, comprises peripheral housing and be contained in vibrational system, magnetic circuit system and the elastic supporting member for supporting optical member in described peripheral housing; Described magnetic circuit system is supported by described elastic supporting member for supporting optical member and fixes and be suspended in described peripheral housing; Described vibrational system comprises vibrating diaphragm and is incorporated into the voice coil loudspeaker voice coil of described vibrating diaphragm side, and wherein, described peripheral housing is metal material; The inner side of described peripheral housing is fixed with conduction element; Lead-in wire and the described conduction element of described voice coil loudspeaker voice coil are electrically connected; Described conduction element is electrically connected with the electrical connector extending to described peripheral hull outside; Described electrical connector and external circuit conducting; The marginal position of described peripheral housing is provided with the moulding of the plastic material of integrated injection molding, and described electrical connector is fixed by described moulding; Described moulding does not exceed the horizontal space of described peripheral housing in the horizontal direction.
Improve as one, the position that described peripheral housing combines with described moulding is provided with wedge-shaped slot, and on described moulding, correspondence is provided with wedge shape sawtooth.
Improve as one, described peripheral housing comprises the first housing and the second housing that combine; Described conduction element is fixed on described second housing.
Improve as one, described second housing is rectangular configuration; Described conduction element is combined on two the long straight flanges/short straight flange of described second shell bottom wall; Described conduction element is provided with pad, fixed in the internal point solid welding of described second housing with the lead-in wire of voice coil loudspeaker voice coil; Described conduction element and described electrical connector are fixed by reflow soldering.
Improve as one, described pad, described electrical connector and the moulding for fixing described electrical connector are all arranged corresponding to the corner positions place of described second housing.
Improve as one, the corner positions place of the corresponding described peripheral housing of described elastic supporting member for supporting optical member be provided with dodge described electrical connector dodge unfilled corner.
Improve as one, described moulding and described second housing are combined as a whole, and fix with the first housing laser welding.
Improve as one, described conduction element is FPCB plate or pcb board.
Improve as one, described electrical connector is spring or shell fragment.
Improve as one, described multifunctional assembling is set to rectangular configuration; Described magnetic circuit system comprises flat conductive magnetic yoke, bond the magnet and washer that are fixed in described conductive magnetic yoke; The marginal position of described conductive magnetic yoke is also adhesively fixed with mass; Described mass is closed loop configuration, is arranged at the periphery of described magnet; Described conductive magnetic yoke, described magnet, described washer and described mass form the oscillator of described multi-function device jointly.
Compared to existing technologies, the multi-function device with vibrating function and vocal function of the present invention,---injection moulding shell fragment---conduction mode of external circuit that changes traditional voice coil leads, but pass through an internal junction unification conduction element for casing body outside, by pad adduction, realize being electrically connected in enclosure interior and voice coil leads, conduction element is electrically connected one for the electrical connector with external circuit conducting simultaneously, in this case, the lead-in wire of voice coil loudspeaker voice coil does not need outer drawing; In addition, marginal position due to casing body is outside provided with the moulding of the plastic material of integrated injection molding, on the one hand, this moulding can fix electrical connector, avoids it to rock, and hold mode is stablized, on the other hand because moulding is plastic material, and correspondingly with the pad that voice coil leads is electrically connected to arrange, when casing body is metal material outside, this design effectively can prevent electrostatic breakdown. herein
Due to the electrical connector for being communicated with external circuit and the corresponding corner positions place that be positioned at second housing equal to the pad that voice coil leads connects, do not take the position of the parts such as interiors of products assembling magnetic circuit, segment space can be saved, increase magnetic field BL value and Sd value (vibration area), promote the performance of this multi-function device.
The position combined with moulding due to peripheral housing is provided with wedge-shaped slot, on moulding, correspondence is provided with wedge shape sawtooth, the design of this material grasping structure effectively can strengthen the injection moulding intensity of moulding and peripheral housing, ensure the steadiness of its integrally structure, prevent moulding and the second housing from departing from.
Due to be provided with at the corner positions place of the corresponding peripheral housing of elastic supporting member for supporting optical member dodge electrical connector dodge unfilled corner, this design can avoid the normal assembling of elastic supporting member for supporting optical member to electrical connector to impact or disturb.
Accompanying drawing explanation
Fig. 1 is the decomposition texture schematic diagram that the present invention has the multi-function device of vibrating function and vocal function;
Fig. 2 is the cutaway view that the present invention has the multi-function device of vibrating function and vocal function;
Fig. 3 is the vertical view that the present invention has the multi-function device of vibrating function and vocal function;
Fig. 4 is the structural representation that the present invention has the multi-function device electrical connections of vibrating function and vocal function;
Fig. 5 is the back appearance figure that the present invention has multi-function device second housing of vibrating function and vocal function; Reference numeral wherein comprises: 1, the first housing, and 110, sidewall, the 2, second housing, 21, diapire, 22, sidewall, 23, moulding, 24, limit opening, 3, conductive magnetic yoke, 31, spacing preiection, 4, magnet, 5, washer, 6, mass, 7, voice coil loudspeaker voice coil, 71, lead-in wire, 8, vibrating diaphragm, 9, strengthening course, 10, elastic supporting member for supporting optical member, 11, gasket ring, 12, FPCB plate, 121, pad, 13, spring.
Embodiment
Below in conjunction with accompanying drawing, describe content of the present invention in detail:
Embodiment:
Consult shown in Fig. 1-Fig. 2, the multifunctional assembling with vibrating function and vocal function of the present invention is set to rectangular configuration, vibrating function and vocal function can be realized simultaneously, comprise peripheral housing, peripheral housing specifically comprises the first housing 1 and the second housing 2 of the rectangle combined, first housing 1 and the second housing 2 complement each other to form the cavity with receiving space, magnetic circuit system is contained in this cavity, vibrational system and elastic supporting member for supporting optical member 10, wherein, magnetic circuit system comprises conductive magnetic yoke 3, bonding is fixed on the magnet 4 of the medium position of conductive magnetic yoke 3 and is attached at the washer 5 on magnet 4 surface, it should be noted that, conductive magnetic yoke 3 is herein designed to a plate-like structure extended in the horizontal direction, the marginal position of conductive magnetic yoke 3 is also fixed with mass 6, mass 6 is closed loop configuration, it is surrounded on the periphery of magnet 4, and there is certain distance between magnet 4, form gap, the vibrating diaphragm 8 that vibrational system specifically comprises voice coil loudspeaker voice coil 7 and is fixedly connected with voice coil loudspeaker voice coil 7, voice coil loudspeaker voice coil 7 comprises the lead-in wire 71 for being electrically connected, in order to strengthen the acoustical behavior of product at high frequency treatment, the centre position of vibrating diaphragm 8 is also combined with strengthening course 9, wherein, one end of voice coil loudspeaker voice coil 7 is suspended in the gap between magnet 4 and mass 6.Elastic supporting member for supporting optical member 10 has the elastic deformation space of vertically going up, and supports the vibration of oscillator in the vertical direction.
From said structure, magnetic circuit system and mass 6 can form the oscillator of multi-function device jointly, oscillator is supported by elastic supporting member for supporting optical member 10 and fixes and be suspended in the space of peripheral housing, during concrete enforcement, one end and the conductive magnetic yoke 3 of elastic supporting member for supporting optical member 6 are fixed, and the other end is then fixed on the second housing 2.Based on the technical problem that the technical program solves emphatically, in present embodiment, the first housing 1 and the second housing 2 are metal material, and the two is directly fixed by laser welding, further, the second housing 2, conductive magnetic yoke 3 all complete fixing with elastic supporting member for supporting optical member 10 by spot welding.
After the basic structure that this multi-function device is described, below its operation principle is set forth: said structure is assembled to mobile phone, in the end products such as Pad and with external circuit conducting after, external circuit can provide alternating current to vibration-sound generating device, and due to loud speaker different with the resonance frequency of vibrating motor itself, the driving voltage that both drivings work also has larger difference, such as, the resonance frequency of motor is usually more than 300 hertz, the resonance frequency of phonation unit is then below 300 hertz, the voltage of CD-ROM drive motor vibration only needs 0.35V, the driving voltage of phonation unit then can reach about 2V, and foreign current signal can be filtered respectively to the scope required for vibration unit and phonation unit by the filter circuit in the end products such as mobile phone, that is, vibration unit can vibrate in low-frequency range, phonation unit is then main at high band sounding, the principle normally worked as vibration unit and phonation unit is then come by the input current signal of voice coil loudspeaker voice coil 7 and the acting in conjunction in magnetic field equally: during low-frequency range, voice coil loudspeaker voice coil 7 can be subject to the effect of Ampere force in the magnetic field of magnet 4 after being energized, also can give the reaction force that magnet 4 one equal and opposite in direction directions are contrary simultaneously, magnet 4 (vertical direction) on the elastic deformation direction of elastic supporting member for supporting optical member 10 is moved reciprocatingly, magnet 4 thus drive the conductive magnetic yoke 3 that is fixedly connected with it, washer 5 and the mass 6 be fixed in conductive magnetic yoke 3 vibrate together, and during high band, voice coil loudspeaker voice coil 7 is after receiving the current signal of external circuit, the motion of the reciprocating cutting magnetic line of force can be done under the effect of electromagnetic field, thus drive the vibration of vibrating diaphragm 8, first housing 1 just phonate hole is offered to the position of vibrating diaphragm 8, thus can outwardly radiative acoustic wave, realize sounding.
Due in present embodiment, peripheral housing is metal material, as previously mentioned, if adopt traditional electric connection mode, be positioned at outer field insulating barrier in the lead-in wire 71 of voice coil loudspeaker voice coil 7 to be easily crashed to pieces, cause short circuit, therefore, the multi-function device of present embodiment also improves to some extent in electric connection mode, be specially: consult Fig. 3, Fig. 4 and Fig. 5 jointly shown in, the inner adhesion of the second housing 2 is fixed with conduction element (only to adopt FPCB plate 12 to set forth as conduction element in present embodiment, certainly, concrete conduction element is not limited to FPCB plate 12, the structure such as pcb board or injection molding material+long shell fragment can also be adopted), like this, the lead-in wire 71 of voice coil loudspeaker voice coil 7 does not just need outer as in traditional electrical connected mode drawing, but can pad 121 spot welding outside on the inside of casing body and FPCB plate 12 fix, FPCB plate 12 is welded with again the electrical connector of the outside extending to the second housing 2 (in present embodiment by the mode of Reflow Soldering, only set forth for spring 13 as electrical connector, certainly, be not limited to the structure of spring 13, can also be other structures such as shell fragment), spring 13 and external circuit conducting, the conducting realizing peripheral circuits complete like this.
In order to further be fixed spring 13, and effectively prevent electrostatic breakdown, marginal position (specifically bight) injection moulding of the second housing 2 is combined with the moulding 23 of plastic material, moulding 23 and the second housing 2 integrated injection molding, and integrally fixed by laser welding with the first housing 1.Consult shown in Fig. 5, in the technical program, spring 13 does not exceed the horizontal space of the second housing 2 in the horizontal direction, and the vertical direction spatial of the second housing 2 is exceeded at the height of vertical direction, a part for spring 13 is wrapped in the inside, only make a less part for spring 13 exposed in outside, effectively can prevent spring 13 from rocking, it is fixed further; In above-mentioned electric connection mode, pad 121 adduction of the FPCB plate be electrically connected with the lead-in wire 71 of voice coil loudspeaker voice coil 7, lead-in wire 71 does not need the outside extending to peripheral housing to carry out spot welding, again due to the existence of the moulding 23 of plastic material, under the prerequisite ensureing peripheral circuits conducting, effectively electrostatic breakdown can be prevented.
During concrete assembling, can first FPCB plate 12 bonding be fixed on two the long straight flanges/short straight flange of the diapire 21 of the second housing 2, the lead-in wire 71 of voice coil loudspeaker voice coil 7 is caused pad 121 place's spot welding, due to FPCB plate 12 structures as inner conducting, in its two other end by Reflow Soldering fixing spring 13, can ensure that spring 13 realizes conducting with lead-in wire 71 by FPCB plate 12 like this.
Preferably, pad 121, spring 13 and the moulding 23 for fixing spring 13 are all arranged corresponding to 2 corner positions places of the second housing, do not take the position of the parts such as interiors of products assembling magnetic circuit, segment space can be saved, increase magnetic field BL value and Sd value (vibration area), promote the performance of this multi-function device.
Preferably, the position that second housing 2 combines with moulding 23 is provided with wedge-shaped slot, on moulding, correspondence is provided with wedge shape sawtooth, the design of this material grasping structure effectively can strengthen the injection moulding intensity of moulding 23 and the second housing 2, ensure the steadiness of its integrally structure, prevent moulding 23 and the second housing 2 from departing from.
Preferably, the corner positions place of corresponding second housing 2 of elastic supporting member for supporting optical member 10 be provided with dodge spring 13 dodge unfilled corner, this design can avoid the normal assembling of elastic supporting member for supporting optical member 10 pairs of springs 13 to impact or disturb.
In addition, due in this programme, the bight of vibrating diaphragm 8 is provided with chamfering structure, just in time can dodge the rigging position of spring 13, does not need to do extra to dodge process.
Preferably, this multi-function device is provided with the structure of spacing oscillator amplitude, concrete, consult Fig. 1 and Fig. 2 jointly shown in, first housing 1 and the second housing 2 include the diapire (diapire 21 as the second housing 2) that horizontal direction is arranged and the sidewall (110 and 22) extended to the direction away from diapire from diapire, the sidewall 22 being parallel to oscillator vibration direction (vertical direction) at the second housing 2 is provided with the limit opening 24 that material is formed, conductive magnetic yoke 3 is the parts away from vibrating diaphragm 8, the position of its corresponding limit opening 24 extends in parallel laterally and forms spacing preiection 31, oscillator is the first spacing distance near the distance definition between one end of vibrating diaphragm 8 and vibrating diaphragm 8, so, when conductive magnetic yoke 3 remains static, conductive magnetic yoke 3 should be less than the first spacing distance to the distance of the upper surface of limit opening 24, i.e. d0 < d1.This is because, when oscillator vibration, when d0 < d1, even if there is larger displacement, also conductive magnetic yoke 3 can be made first to touch peripheral housing, now, collision therebetween can play spacing effect, and restriction oscillator continues upwards to vibrate, so, because oscillator does not also touch vibrating diaphragm 8 near one end of vibrating diaphragm 8, thus can effectively avoiding the damage to vibrating diaphragm 8 by controlling oscillator amplitude, avoiding sonification system therefore to lose efficacy.
It should be noted that, in present embodiment, because d0 is the distance of conductive magnetic yoke 3 to limit opening 24, limit opening 24 is located on the sidewall 22 of the second housing 2, and limit opening 24 is the breach of vertical through sidewall 22, therefore, d0 in fact also can be understood as the distance between the lower surface of the sidewall 110 of conductive magnetic yoke 3 to the first housing 1.In addition, in principle, as long as can ensure that d0 is less than the minimum range between oscillator to vibrating diaphragm 8, in the present embodiment, distance between the upper surface of washer 5 and vibrating diaphragm 8 is the minimum range between oscillator and vibrating diaphragm 8, therefore, in this embodiment, d1 can be understood as the vertical range between one end of the close vibrating diaphragm 8 of washer 5 and vibrating diaphragm 8.
Preferably, gasket ring 11 is also provided with between vibrating diaphragm 8 and the first housing 1, gasket ring 11 is also closed circulus, and the setting of gasket ring 11 can make to be formed between vibrating diaphragm 8 and the first housing 1 certain gap, and vibrating diaphragm 8 directly can not touch the first housing 1 of metal material.
Preferably, the back side of the second housing 2 is provided with four perforates, and four perforates can be used for the welded condition observing elastic supporting member for supporting optical member 10, are convenient to be welded and fixed it.
Preferably, elastic supporting member for supporting optical member 10 is stereochemical structure, comprise the first vibration section being positioned at inner side, the second vibration section being positioned at outside and connect the elasticity arm of the first vibration section and the second vibration section, and, there is difference in height between first vibration section and the second vibration section, the elastic supporting member for supporting optical member 10 of this structure does not need the magnetic circuit space taking both sides, can increase the size of built-in magnet 4, the brachium of elastic supporting member for supporting optical member 10 itself can be increased simultaneously, regulate the F0 of vibration unit better.
The multi-function device with vibrating function and vocal function of the present invention, by arranging conduction element structure in the inside of the second housing, adopt the voice coil leads---electric connection mode of conduction element---electrical connector---external circuit, coordinate the design of the second housing moulding, solve the problem that traditional electrical connected mode under the prerequisite of metal material shell easily causes classics to puncture targetedly, under guarantee realizes the prerequisite of peripheral circuits conducting, save the assembly space taking enclosure interior, put forward high bl-values and Sd value, enhance product performance.
These are only the invention process case, be not limited to the present invention, as long as those of ordinary skill in the art modify or change according to the equivalence that disclosed content is done, all should include in the protection range recorded in claims.
Claims (10)
1. there is a multi-function device for vibrating function and vocal function, comprise peripheral housing and be contained in vibrational system, magnetic circuit system and the elastic supporting member for supporting optical member in described peripheral housing; Described magnetic circuit system is supported by described elastic supporting member for supporting optical member and fixes and be suspended in described peripheral housing; Described vibrational system comprises vibrating diaphragm and is incorporated into the voice coil loudspeaker voice coil of described vibrating diaphragm side, it is characterized in that: described peripheral housing is metal material; The inner side of described peripheral housing is fixed with conduction element; Lead-in wire and the described conduction element of described voice coil loudspeaker voice coil are electrically connected; Described conduction element is electrically connected with the electrical connector extending to described peripheral hull outside; Described electrical connector and external circuit conducting; The marginal position of described peripheral housing is provided with the moulding of the plastic material of integrated injection molding, and described electrical connector is fixed by described moulding; Described moulding does not exceed the horizontal space of described peripheral housing in the horizontal direction.
2. multi-function device according to claim 1, is characterized in that: the position that described peripheral housing combines with described moulding is provided with wedge-shaped slot, and on described moulding, correspondence is provided with wedge shape sawtooth.
3. multi-function device according to claim 2, is characterized in that: described peripheral housing comprises the first housing and the second housing that combine; Described conduction element is fixed on described second housing.
4. multi-function device according to claim 3, is characterized in that: described second housing is rectangular configuration; Described conduction element is combined on two the long straight flanges/short straight flange of described second shell bottom wall; Described conduction element is provided with pad, fixed in the internal point solid welding of described second housing with the lead-in wire of voice coil loudspeaker voice coil; Described conduction element and described electrical connector are fixed by reflow soldering.
5. multi-function device according to claim 4, is characterized in that: described pad, described electrical connector and the moulding for fixing described electrical connector are all arranged corresponding to the corner positions place of described second housing.
6. multi-function device according to claim 1, is characterized in that: the corner positions place of the corresponding described peripheral housing of described elastic supporting member for supporting optical member be provided with dodge described electrical connector dodge unfilled corner.
7. multi-function device according to claim 5, is characterized in that: described moulding and described second housing are combined as a whole, and fix with the first housing laser welding.
8. the multi-function device according to claim 1-4, is characterized in that: described conduction element is FPCB plate or pcb board.
9. the multi-function device according to claim 1-6, is characterized in that: described electrical connector is spring or shell fragment.
10. multi-function device according to claim 1, is characterized in that: described multifunctional assembling is set to rectangular configuration; Described magnetic circuit system comprises flat conductive magnetic yoke, bond the magnet and washer that are fixed in described conductive magnetic yoke; The marginal position of described conductive magnetic yoke is also adhesively fixed with mass; Described mass is closed loop configuration, is arranged at the periphery of described magnet; Described conductive magnetic yoke, described magnet, described washer and described mass form the oscillator of described multi-function device jointly.
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| CN201511033161.1A CN105516864B (en) | 2015-12-31 | 2015-12-31 | A kind of multi-function device with vibrating function and vocal function |
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| CN201511033161.1A CN105516864B (en) | 2015-12-31 | 2015-12-31 | A kind of multi-function device with vibrating function and vocal function |
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| CN112714387A (en) * | 2021-03-26 | 2021-04-27 | 合翔(常州)电子有限公司 | High-power thin sound production device |
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| CN107623883B (en) * | 2017-09-22 | 2023-11-21 | 歌尔股份有限公司 | Wire control device, antenna structure and Bluetooth headset |
| CN111556413A (en) * | 2018-12-10 | 2020-08-18 | Ask工业股份公司 | Acoustic panel assembly with suspension system |
| CN110267171A (en) * | 2019-06-12 | 2019-09-20 | 瑞声科技（南京）有限公司 | A kind of screen sounding device |
| CN111641906A (en) * | 2020-06-24 | 2020-09-08 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN112312246A (en) * | 2020-11-30 | 2021-02-02 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| CN112312246B (en) * | 2020-11-30 | 2022-03-01 | 瑞声新能源发展(常州)有限公司科教城分公司 | Sound production device |
| WO2022110463A1 (en) * | 2020-11-30 | 2022-06-02 | 瑞声声学科技(深圳)有限公司 | Sound producing device |
| CN112714387A (en) * | 2021-03-26 | 2021-04-27 | 合翔(常州)电子有限公司 | High-power thin sound production device |
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| CN105516864B (en) | 2019-03-26 |
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