CN204887427U - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
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- CN204887427U CN204887427U CN201520524137.7U CN201520524137U CN204887427U CN 204887427 U CN204887427 U CN 204887427U CN 201520524137 U CN201520524137 U CN 201520524137U CN 204887427 U CN204887427 U CN 204887427U
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- washer
- voice coil
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Abstract
The utility model discloses a loudspeaker, its flexble printed circuit board (6) including mainboard (61), via two arm board (62) that mainboard (61) extends and with reinforcing plate (63) of arm board (62) one -to -one, mainboard (61) set up on mesochite (21), and expose the signal input part on mainboard (61) young (611), during magnetic circuit (1) is stretched into in two arm board (62), and pad (621) on two arm board (62) with correspond lead wire (311) and weld and be in the same place, reinforcing plate (63) fixed connection is on the back that corresponds arm board (62), and the lead wire that is just corresponding arm board (62) gets into one side and forms the step portion (64) that is less than corresponding arm board (62). The utility model discloses loudspeaker is through setting up step portion, can reduce the lead wire and in supporting the shearing force that produces at the position of arm board edge when following the voice coil loudspeaker voice coil vibration, realize that effective protection lead wire does not receive the purpose of damage.
Description
Technical field
The utility model relates to electro-acoustic product technical field, and more specifically, the utility model relates to a kind of loud speaker.
Background technology
The operation principle of coil-moving speaker be voice coil loudspeaker voice coil when being energized by up-down vibration in the magnetic gap that formed at magnetic circuit system, so just instigate surrounding air sounding by voice coil loudspeaker voice coil drive diaphragm oscillations.For this reason, loud speaker should arrange the flexible printed circuit board (FlexiblePrintedCircuitBoard that voice coil loudspeaker voice coil can be connected in external circuit, FPCB), and by the wire bonds of voice coil loudspeaker voice coil 31 on the corresponding pad of FPCB, to make external circuit by the signal input terminal on FPCB to voice coil loudspeaker voice coil input audio signal.
Be be arranged on independent position before above-mentioned FPCB, cut off by other assemblies of loud speaker when voice coil vibrations to avoid lead-in wire.But miniaturized gradually along with electronic product, loud speaker is also more and more less, has not even had independent position to arrange FPCB, therefore, there is the application be placed on by FPCB in magnetic circuit system at present.So, interfere in order to avoid producing between FPCB and the assembly of magnetic circuit system, go between and produce larger difference in height between the position that lead-in wire enters contiguous FPCB edge, side is by other assemblies of loud speaker, this can produce larger shearing force at the position being supported on FPCB edge of lead-in wire by causing the vibration of lead-in wire, so this kind larger lead-in wire of structure existence be arranged on by FPCB in magnetic circuit system is sheared the potential safety hazard that power is cut off.
Utility model content
An object of the present utility model is to provide a kind of loud speaker, to reduce the possibility that the power that is sheared that goes between is cut off.
According to first aspect of the present utility model, provide a kind of loud speaker, the magnetic circuit system that device comprises mesochite, flexible printed circuit board, voice coil loudspeaker voice coil and is fixedly connected on described mesochite, described voice coil loudspeaker voice coil is arranged in the magnetic gap of described magnetic circuit system formation, and described voice coil loudspeaker voice coil leads to two lead-in wires; Two arm plates that described flexible printed circuit board comprises mainboard, extend via described mainboard and with described arm plate stiffener one to one, described mainboard is arranged on described mesochite, and described mainboard is provided with signal input terminal; Described two arm plates stretch in described magnetic circuit system, and pad on described two arm plates and corresponding wire bonds are together; Described stiffener is fixedly connected on the back side of counterpart arm plate, and described stiffener enters the stage portion of side formation lower than counterpart arm plate at the lead-in wire of counterpart arm plate.
Preferably, described stiffener is fixedly bonded on the back side of counterpart arm plate.
Preferably, described mainboard is provided with at least two location holes, and described mesochite is provided with and described location hole reference column one to one, and described mainboard is equipped with on described mesochite by described location hole and corresponding reference column.
Preferably, described flexible printed circuit board also comprises the glue-line be coated in described stage portion, and described lead-in wire enters side at the lead-in wire of counterpart arm plate and is supported on the glue-line of corresponding stage portion.
Preferably, described lead-in wire enters side at the lead-in wire of counterpart arm plate and supports and stick on the glue-line of corresponding stage portion.
Preferably, the supporting surface of the support correspondence lead-in wire of described glue-line is concordant with the front of counterpart arm plate; Or the supporting surface of the support of described glue-line correspondence lead-in wire is higher than the front of counterpart arm plate.
Preferably, described magnetic circuit system comprises magnetic conductive board, the limit washer of the center washer of the centring magnet be arranged on magnetic conductive board, corresponding described centring magnet, the limit magnet that described magnetic conductive board is arranged around described centring magnet and corresponding described limit magnet, and described magnetic circuit system is fixedly connected on described mesochite by described limit washer; Described stiffener is fixedly connected on described mesochite, described limit washer or described limit magnet.
Preferably, described limit washer is corresponding all limits magnet and the annular washer arranged around described center washer, and described stiffener supports and is fixedly connected on the washer of described limit.
Preferably, described magnetic circuit system has at least two blocks of limit magnet, and wherein one block of limit magnet between described two arm plates.
Preferably, described magnetic circuit system has two blocks of limit magnet; Two kinks that described limit washer comprises washer body and accepts with described washer body, described washer body is arranged on the surface of described dorsad magnetic conductive board of corresponding sides magnet, described kink bends towards described magnetic conductive board from top to bottom via the side of described washer body, and described kink and described magnetic conductive board are fixed together; Described two kinks and described two pieces of limit magnet right-angled intersections are arranged, and lead-in wire via a kink inner side and corresponding pad solder together, another go between via another kink inner side and corresponding pad solder together.
A beneficial effect of the present utility model is; loud speaker of the present utility model is by arranging stage portion; lead-in wire can be reduced in the difference in height entered between the position of side adjacent arms panel edges and other assemblies of loud speaker that goes between; therefore; loadspeaker structure of the present utility model will reduce lead-in wire when following voice coil vibrations greatly in the shearing force that the position being supported on arm panel edges place produces; and then reduce lead-in wire by the possibility of cutting off, realize available protecting and to go between the object be not damaged.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present utility model, further feature of the present utility model and advantage thereof will become clear.
Accompanying drawing explanation
In the description combined and the accompanying drawing forming a part for specification shows embodiment of the present utility model, and illustrate that one is used from and explains principle of the present utility model together with it.
Fig. 1 is a kind of schematic top plan view implementing structure according to the utility model loud speaker;
Fig. 2 be in Fig. 1 A-A to cross-sectional schematic;
Fig. 3 is the magnetic circuit system of loud speaker in Fig. 1, the syndeton schematic diagram between flexible printed circuit board and mesochite.
Fig. 4 be in Fig. 3 C-C to analyse and observe decomposing schematic representation;
Fig. 5 is the close-up schematic view of part B in Fig. 4;
Fig. 6 is the structural representation of flexible printed circuit board in Fig. 3;
Fig. 7 is the structural representation of limit washer in Fig. 3.
Description of reference numerals:
1-magnetic circuit system; 11-magnetic conductive board;
12-centring magnet; 13-limit magnet;
14-center washer; 15-limit washer;
151-washer body; 152-kink;
153-pre-formed members; The side of 15a-washer body;
21-mesochite; 22-upper casing;
31-voice coil loudspeaker voice coil; 32-vibrating diaphragm;
33-ball top; 4-phonate hole;
6-flexible printed circuit board; 61-mainboard;
611-signal input terminal; 62-arm plate;
621-pad; 63-stiffener;
64-stage portion; 612-location hole;
213-reference column; 311-goes between;
211-hot molten column.
Embodiment
Various exemplary embodiment of the present utility model is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit scope of the present utility model.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the utility model and application or use.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part for specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
The utility model in order to the voice coil leads that solves existing loud speaker and exist easily when voice coil vibrations by the problem of cutting off, provide a kind of loadspeaker structure through improving, at this, for the ease of understanding the improvement that the utility model carries out loadspeaker structure, the basic structure of following first simple declaration once loud speaker, as depicted in figs. 1 and 2, loud speaker comprises magnetic circuit system 1, vibrational system and auxiliary system, auxiliary system mainly refers to the housing parts of loud speaker, and the shell of loud speaker generally includes upper casing 22, mesochite 21 and lower casing (not shown), vibrational system comprises vibrating diaphragm 32, be fixed on the voice coil loudspeaker voice coil 31 of vibrating diaphragm 32 side and be fixed on the ball top 33 (DOME) of vibrating diaphragm 32 center, wherein, vibrating diaphragm 32 is fixedly connected with mesochite 21, with by upper casing 22, the cavity that mesochite 21 and lower casing surround is divided into the front operatic tunes and the rear operatic tunes, wherein, upper casing 22 and mesochite 21 are joined together to form the phonate hole 4 leading to the front operatic tunes, the operatic tunes after lower casing and mesochite 21 link together and close, magnetic circuit system 1 is contained in this rear operatic tunes, voice coil loudspeaker voice coil 31 is arranged in the magnetic gap of magnetic circuit system 1 formation, and voice coil loudspeaker voice coil 31 leads to two lead-in wires 311, voice coil loudspeaker voice coil 31 is connected in external circuit by lead-in wire 311, magnetic circuit system 1 generally includes magnetic conductive board 11 (or being referred to as frame), centring magnet 12, limit magnet 13, center washer 14 and limit washer 15, and magnetic circuit system 1 is fixedly connected on mesochite 21 by limit washer 15, particularly, centring magnet 12 is arranged on the center on magnetic conductive board 11 surface, limit magnet 13 is arranged around centring magnet 12 on magnetic conductive board 11, center washer 14 is arranged on the surface of magnetic conductive board dorsad 11 of centring magnet 12, the surface of this magnetic conductive board 11 is dorsad interpreted as being relative surface, the surface be fitted in centring magnet 12 on magnetic conductive board 11, and limit washer 15 is arranged on the surface of magnetic conductive board dorsad 11 of corresponding sides magnet 13, the surface of this magnetic conductive board 11 be dorsad interpreted as be with corresponding sides magnet 13 be fitted in relative surface, surface on magnetic conductive board 11, and form above-mentioned magnetic gap between the integrative-structure of the integrative-structure of centring magnet 12 and center washer 14 and limit magnet 13 and limit washer 15.In addition, loud speaker is also provided with flexible printed circuit board 6 (FlexiblePrintedCircuitBoard, FPCB), to enable external circuit via this circuit board 6 and to go between 311 to voice coil loudspeaker voice coil 31 input electrical signal, and then the vibration of voice coil loudspeaker voice coil 31 in magnetic circuit system 1 is realized.
The improvement of the utility model to loadspeaker structure relates generally to flexible printed circuit board 6, and to flexible printed circuit board 6 relevant mesochite 21, magnetic circuit system 1 and voice coil loudspeaker voice coil 31 are set; In loud speaker of the present utility model, as shown in Figures 1 to 7, two arm plates 62 that this flexible printed circuit board 6 comprises mainboard 61, extend via mainboard 61 and with arm plate 62 stiffener 63 one to one, this mainboard 61 is arranged on mesochite 21, and the signal input terminal 611 on mainboard 61 exposes, namely signal input terminal 611 is positioned at the outside of the shell of loud speaker, so that be connected with external circuit; Two arm plates 62 stretch in magnetic circuit system 1, and pad 621 on two arm plates 62 311 to weld together with corresponding lead-in wire; Above-mentioned stiffener 63 is fixedly connected on the back side of counterpart arm plate 62, this back side be arm plate 62 with the surface of vis-a-vis that pad 621 is set, and stiffener 63 enters the stage portion 64 of side formation lower than counterpart arm plate 62 at the lead-in wire of counterpart arm plate 62, wherein, this stiffener 63 is fixedly bonded to preferably through glue on the back side of counterpart arm plate 62, so just without the need to offering the connecting hole passed for trip bolt on arm plate 62.Because arranging of stage portion 64 will reduce lead-in wire 311 in the difference in height entered between the position at adjacent arms plate 62 edge, side and other assemblies of loud speaker that goes between; therefore; loadspeaker structure of the present utility model will reduce lead-in wire 311 when following voice coil loudspeaker voice coil 31 and vibrating greatly in the shearing force that the position being supported on Bei Ban 62 edge produces; and then loadspeaker structure of the present utility model can reduce lead-in wire 311 greatly by the possibility of cutting off, realize the object that available protecting lead-in wire 311 is not damaged.
In order to improve the protective effect of stage portion 64 to lead-in wire 311 further; this flexible printed circuit board 6 also can comprise the glue-line (not shown) be coated in stage portion 64; can enter side at the lead-in wire of counterpart arm plate 62 to make lead-in wire 311 is supported on corresponding glue-line, and this is conducive to reducing lead-in wire 311 further when following voice coil loudspeaker voice coil 31 and vibrating in the shearing force that the position being supported on Bei Ban 62 edge produces.Advantageously, this lead-in wire 311 enters side at the lead-in wire of counterpart arm plate 62 and supports and stick on corresponding glue-line, this can make the position opposing arms plate 62 being supported on Bei Ban 62 edge of lead-in wire 311 fix, and then eliminate the shearing force of this position substantially completely, and the critical localisation place that the position transfer that may there is shearing force extremely contacts with glue-line, but because glue-line quality is softer, and obvious seamed edge can not be formed due to the mobility of glue, therefore, the shearing force gone between 311 and glue-line is negligible.In addition, in the embodiment that glue-line is set, the supporting surface of the support correspondence lead-in wire 311 of this glue-line is preferably at least concordant with the front of counterpart arm plate 62, particularly in the restriction range of magnetic circuit system 1 higher than the front of counterpart arm plate 62, this kind of structure can lead-in wire 311 follow when voice coil loudspeaker voice coil 31 vibrates for go between 311 the position being supported on Bei Ban 62 edge buffering is provided, and then the effect of the reduction shearing force of glue-line can be made to show more outstanding, as long as the supporting surface of glue-line can obtain good buffering effect a little more than the front of counterpart arm plate 62, herein " a little more than " implication be: the difference in height between the front of this supporting surface and counterpart arm plate 62 should be less than or equal to 2mm.
In order to mainboard 61 is arranged on mesochite 21 by comparatively simple structure, as shown in Figures 3 to 6, this mainboard 61 can be provided with at least two location holes 612, two location holes 612 are such as only set, mesochite 21 is provided with and location hole 612 reference column 213 one to one, like this, this mainboard 61 being equipped with on mesochite 21 just by location hole 612 and corresponding reference column 213.
In order to improve the connection reliability of flexible circuit board 6, with avoid due to go between 311 frequent vibration and cause flexible circuit board 6 to damage situation occur, counterpart arm plate 62 is supported by stiffener 63, for this reason, this stiffener 63 can be fixedly connected on mesochite 21 or on limit washer 15 or on limit magnet 13.On this basis, for the ease of carrying out the connection of stiffener 63, above-mentioned limit washer 15 is preferably one block of correspondence all limits magnet 13, and around the annular washer that center washer 14 is arranged, like this, stiffener 63 just can support and be fixedly connected on the position not arranging limit magnet 13 of limit washer 15.More preferably, this stiffener 63 supports and is fixedly bonded on limit washer 15, so just, without the need to offering the connecting hole using trip bolt etc. to be connected on limit washer 15 with stiffener 63, also without the need to adopting special laser soldering device the two to be fixed together.
In order to make the structure of the utility model loud speaker compacter, this magnetic circuit system 1 can arrange at least two limit magnet 13, and makes one of them limit magnet 13 between two arm plates 62, namely by one of them limit magnet 13 of flexible printed circuit board 6 semi-surrounding.For magnetic circuit system 1, two limit magnet 13 are set, these two limit magnet 13 can on the Width of voice coil loudspeaker voice coil 31 relatively, mainboard 61 is then positioned at the outside of one of them limit magnet 13 on this Width, two arm plates 62 are positioned at the both sides of one of them limit magnet 13 above-mentioned on the length direction of voice coil loudspeaker voice coil 31, form the structure above by one of them limit magnet 13 of flexible printed circuit board 6 semi-surrounding.At this, Width and the length direction of this voice coil loudspeaker voice coil 31 are relative, here the direction of restriction two Relative vertical is only used to, in actual applications also can using the developed width direction of voice coil loudspeaker voice coil 31 as above-mentioned length direction, and using the physical length direction of voice coil loudspeaker voice coil 31 as above-mentioned Width.
On the basis of the embodiment by one of them limit magnet 13 of flexible printed circuit board 6 semi-surrounding, be not damaged to protect lead-in wire 311 further, as shown in Fig. 3 to Fig. 7, this magnetic circuit system 1 adopts and arranges two blocks of limit magnet 13, and the structure of annular washer as limit washer 15 is set, wherein, two kinks 152 that this limit washer 15 comprises washer body 151 further and accepts with washer body 151, washer body 151 is arranged on the surface of magnetic conductive board dorsad 11 of corresponding sides magnet 13, kink 152 bends towards magnetic conductive board 11 from top to bottom via the side 15a of washer body 151, and kink 152 and magnetic conductive board 11 are fixed together, two kinks 152 and the right-angled intersection of two limit magnet 13 are arranged, here " right-angled intersection layout " refers to that two kinks 152 and two limit magnet 13 are oppositely arranged separately in this criss-cross construction, and a lead-in wire 311 welds together with corresponding pad 621 via the inner side of a kink 152, another goes between and 311 to weld together with corresponding pad 621 via the inner side of another kink 152.For this reason, in the embodiment that two limit magnet 13 are oppositely arranged on the Width of voice coil loudspeaker voice coil 31, these two kinks 152 are oppositely arranged on the length direction of voice coil loudspeaker voice coil 31, and for the ease of carrying out the connection of lead-in wire 311, article two, lead-in wire 311 can be drawn via the both sides in the longitudinal direction of voice coil loudspeaker voice coil 31 respectively, like this, going between 311 just can via the inner side of the kink 152 of respective side and corresponding pad solder together.Further, in order to improve the bonding strength between limit washer 15 and magnetic conductive board 11, even if with make between stiffener 63 with limit washer 15 and magnetic circuit system 1 each assembly between by also can not be loose because loud speaker falls together with being adhesively fixed, this kink 152 is such as fixed together by laser welding or ultrasonic bonding together with being preferably welded and fixed with magnetic conductive board 11.
In order to improve the bonding strength between limit washer 15 and mesochite 21, and then improve magnetic circuit system 1 and the bonding strength between the flexible circuit board 6 be arranged in magnetic circuit system 1 and mesochite 21, as shown in Fig. 3 to Fig. 7, pre-formed members 153 can be set on limit washer 15, and arrange and pre-formed members 153 hot molten column 211 one to one on mesochite 21, limit washer 15 riveted joint through corresponding pre-formed members 153, and is fixed on mesochite 21 by the hot melt of hot molten column 211 by this hot molten column 211.
The various embodiments described above primary focus describes the difference with other embodiments, but it will be clear for those skilled in the art that the various embodiments described above can be used alone as required or be combined with each other.
Although be described in detail specific embodiments more of the present utility model by example, it should be appreciated by those skilled in the art, above example is only to be described, instead of in order to limit scope of the present utility model.It should be appreciated by those skilled in the art, when not departing from scope and spirit of the present utility model, above embodiment can be modified.Scope of the present utility model is limited by claims.
Claims (10)
1. a loud speaker, it is characterized in that, the magnetic circuit system (1) comprising mesochite (21), flexible printed circuit board (6), voice coil loudspeaker voice coil (31) and be fixedly connected on described mesochite (21), described voice coil loudspeaker voice coil (31) is arranged in the magnetic gap that described magnetic circuit system (1) formed, and described voice coil loudspeaker voice coil (31) leads to two lead-in wires (311); Two arm plates (62) that described flexible printed circuit board (6) comprises mainboard (61), extend via described mainboard (61) and with described arm plate (62) stiffener (63) one to one, described mainboard (61) is arranged on described mesochite (21), and described mainboard (61) is provided with signal input terminal (611); Described two arm plates (62) are stretched in described magnetic circuit system (1), and the pad (621) on described two arm plates (62) welds together with corresponding go between (311); Described stiffener (63) is fixedly connected on the back side of counterpart arm plate (62), and described stiffener (63) enters the stage portion (64) of side formation lower than counterpart arm plate (62) at the lead-in wire of counterpart arm plate (62).
2. loud speaker according to claim 1, is characterized in that, described stiffener (63) is fixedly bonded on the back side of counterpart arm plate (62).
3. loud speaker according to claim 1, it is characterized in that, described mainboard (61) is provided with at least two location holes (612), described mesochite (21) is provided with and described location hole (612) reference column (213) one to one, and described mainboard (61) is equipped with on described mesochite (21) by described location hole (612) and corresponding reference column (213).
4. loud speaker according to claim 1, it is characterized in that, described flexible printed circuit board (6) also comprises the glue-line be coated in described stage portion (64), and described lead-in wire (311) enters side at the lead-in wire of counterpart arm plate (62) and is supported on the glue-line of corresponding stage portion (64).
5. loud speaker according to claim 4, is characterized in that, described lead-in wire (311) enters side at the lead-in wire of counterpart arm plate (62) and supports and stick on the glue-line of corresponding stage portion (64).
6. the loud speaker according to claim 4 or 5, is characterized in that, the supporting surface of support correspondence lead-in wire (311) of described glue-line is concordant with the front of counterpart arm plate (62); Or the supporting surface of the support of described glue-line correspondence lead-in wire (311) is higher than the front of counterpart arm plate (62).
7. loud speaker according to any one of claim 1 to 5, it is characterized in that, described magnetic circuit system (1) comprises magnetic conductive board (11), be arranged on the centring magnet (12) on magnetic conductive board (11), the center washer (14) of corresponding described centring magnet (12), around the limit magnet (13) that described centring magnet (12) is arranged on described magnetic conductive board (11), and the limit washer (15) of corresponding described limit magnet (13), described magnetic circuit system (1) is fixedly connected on described mesochite (21) by described limit washer (15), described stiffener (63) is fixedly connected on described mesochite (21), described limit washer (15) or described limit magnet (13).
8. loud speaker according to claim 7, it is characterized in that, the annular washer that described limit washer (15) is arranged for corresponding all limits magnet (13) and around described center washer (14), described stiffener (63) supports and is fixedly connected on described limit washer (15).
9. loud speaker according to claim 8, is characterized in that, described magnetic circuit system (1) has at least two pieces of limit magnet (13), and wherein one piece of limit magnet (13) is positioned between described two arm plates (62).
10. loud speaker according to claim 9, is characterized in that, described magnetic circuit system (1) has two pieces of limit magnet (13); Two kinks (152) that described limit washer (15) comprises washer body (151) and accepts with described washer body (151), described washer body (151) is arranged on the surface of described dorsad magnetic conductive board (11) of corresponding sides magnet (13), described kink (152) bends towards described magnetic conductive board (11) from top to bottom via the side (15a) of described washer body (151), and described kink (152) and described magnetic conductive board (11) are fixed together; Described two kinks (152) and the right-angled intersection of described two pieces of limit magnet (13) are arranged, and lead-in wire (311) welds together with corresponding pad (621) via the inner side of a kink (152), another lead-in wire (311) welds together with corresponding pad (621) via the inner side of another kink (152).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520524137.7U CN204887427U (en) | 2015-07-17 | 2015-07-17 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520524137.7U CN204887427U (en) | 2015-07-17 | 2015-07-17 | Loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204887427U true CN204887427U (en) | 2015-12-16 |
Family
ID=54831745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520524137.7U Active CN204887427U (en) | 2015-07-17 | 2015-07-17 | Loudspeaker |
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| Country | Link |
|---|---|
| CN (1) | CN204887427U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI663881B (en) * | 2017-01-13 | 2019-06-21 | 日商阿爾卑斯阿爾派股份有限公司 | Pronunciation device |
| CN110418254A (en) * | 2018-04-27 | 2019-11-05 | 歌尔股份有限公司 | Sounding device monomer, sounding module and electric terminal |
-
2015
- 2015-07-17 CN CN201520524137.7U patent/CN204887427U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI663881B (en) * | 2017-01-13 | 2019-06-21 | 日商阿爾卑斯阿爾派股份有限公司 | Pronunciation device |
| CN110178384A (en) * | 2017-01-13 | 2019-08-27 | 阿尔卑斯阿尔派株式会社 | Sounding device |
| US10735863B2 (en) | 2017-01-13 | 2020-08-04 | Alps Alpine Co., Ltd. | Sound producing device |
| CN110418254A (en) * | 2018-04-27 | 2019-11-05 | 歌尔股份有限公司 | Sounding device monomer, sounding module and electric terminal |
| CN110418254B (en) * | 2018-04-27 | 2022-06-07 | 歌尔股份有限公司 | Sound production device monomer, sound production module and electronic terminal |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Address after: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |