CN204761683U - Miniature loudspeaker - Google Patents
Miniature loudspeaker Download PDFInfo
- Publication number
- CN204761683U CN204761683U CN201520465781.1U CN201520465781U CN204761683U CN 204761683 U CN204761683 U CN 204761683U CN 201520465781 U CN201520465781 U CN 201520465781U CN 204761683 U CN204761683 U CN 204761683U
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- CN
- China
- Prior art keywords
- housing
- microspeaker
- seal
- casing
- voice coil
- 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.)
- Expired - Fee Related
Links
- 230000000994 depressogenic effect Effects 0.000 claims description 17
- 238000002604 ultrasonography Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000007665 sagging Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 16
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 3
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000012994 photoredox catalyst Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Telephone Set Structure (AREA)
Abstract
The utility model discloses a miniature loudspeaker relates to electro -acoustic products technical field, comprising a first housing and a second housing which are combined into one body, first casing with vibration system and magnetic circuit have been accommodated in the space that the second casing encloses, the second casing with the lateral wall that first casing combined together the end encircles the periphery of first casing, the outward flange of first casing with the second casing be equipped with sealed clearance between the inboard of lateral wall, miniature loudspeaker still includes the sealing member of a loop configuration, the sealing member is located in the sealed clearance. The utility model discloses the miniature loudspeaker leakproofness was poor during miniature loudspeaker had solved prior art, can not satisfy higher technical problem such as waterproof requirement, the utility model discloses the miniature loudspeaker leakproofness is high, can be through the waterproof test of high pressure, and production efficiency height simultaneously, the appearance is pleasing to the eye.
Description
Technical field
The utility model relates to electro-acoustic product technical field, particularly a kind of Microspeaker.
Background technology
Microspeaker is the important acoustic element of portable electric appts, for completing the conversion between the signal of telecommunication and voice signal, is a kind of energy conversion device.Existing Microspeaker generally includes shell, and shell is combined into by least two housings usually, contains vibrational system and magnetic circuit system in the space that each housing surrounds jointly.At present, the sealing between each housing combines and normally adopts ultra-sonic welded sealing or gluing sealing to realize, and these two kinds of techniques can meet the basic waterproof requirement of Microspeaker.But along with the development of electronic technology, people require more and more higher to the various functions of portable electric appts, have wherein just done very large raising to the requirement of waterproof.
Along with people are to the continuous lifting of portable electric appts waterproof requirement, Microspeaker as the primary acoustic parts of portable electric appts is arranged on the phonate hole place of portable electric appts due to it, be easy to the damage being subject to the water droplet entered from phonate hole, therefore, lifting has also been done to the waterproof requirement of Microspeaker, when carrying out waterproof test to Microspeaker, its hydraulic pressure that will bear is improve 5bar (pressure unit, 1bar=0.1MPa), this just makes existing to be sealed by ultra-sonic welded or the Microspeaker of adhesive sealing cannot by the waterproof test of this pressure.Meanwhile, these two kinds of sealing means also exist following bad:
Ultra-sonic welded seals, and along with constantly reducing of micro-speaker, the setting of ultrasound structure is restricted, and select surplus little, can cause ultrasonic state labile, main manifestations is that the ultrasonic sealing that causes out of order of regional area is poor.
Gluing seals, and production efficiency is low, and state is difficult to control, and easily produces Local Cracking etc. bad, and sealing is poor and easily produce the glue that overflows, and causes the profile of Microspeaker unsightly.
Utility model content
For above defect, technical problem to be solved in the utility model is to provide a kind of Microspeaker, good airproof performance between this Microspeaker housing, can by the waterproof test of High Voltage.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of Microspeaker, comprise the first housing and the second housing that combine, vibrational system and magnetic circuit system is contained in the space that described first housing and described second housing surround, described second housing combines the side wall ring held around the periphery of described first housing with described first housing, be provided with seal clearance between the inner side of the outward flange of described first housing and the described sidewall of described second housing; Described Microspeaker also comprises the seal of a loop configuration, and described seal is positioned at described seal clearance.
Wherein, described seal is shaping by Shooting Technique after described first housing is combined with described second housing.
Wherein, the edge in the outside of described first housing is provided with the first depressed part, forms first and hold glue space between described first depressed part and described second housing.
Wherein, the edge of the inner side of described first housing is provided with the second depressed part, forms second and hold glue space between described second depressed part and described second housing.
Wherein, the inside sidewalls of described second housing is provided with the joint portion of land structure, and the position of the corresponding described joint portion, inner side of described first housing is provided with the ultrasound lines with described second housing combination of ultrasound.
Wherein, the material of described seal is the one in silica gel, TPU, TPC, TPR, PC or ABS.
Wherein, described magnetic circuit system comprises magnetic conductive board, described magnetic conductive board is fixed with internal magnet and limit magnet, described internal magnet and described limit magnet are fixed with interior washer and limit washer respectively, described limit washer is circulus, the dual-side edge that described limit washer is relative is provided with the support portion extended to described magnetic conductive board, and the position of the corresponding described support portion, edge of described magnetic conductive board is provided with the breach suitable with the end of described support portion.
Wherein, described vibrational system comprises the vibration component combined with described second housing, described vibration component is fixed with voice coil loudspeaker voice coil near the side of described magnetic circuit system, and described vibration component comprises silica gel vibrating diaphragm, and described vibrating diaphragm is combined by Shooting Technique with described second housing.
Wherein, on described magnetic conductive board, the position of the lead-in wire of corresponding described voice coil loudspeaker voice coil is provided with sagging relief portion.
After have employed technique scheme, the beneficial effects of the utility model are:
Because the utility model Microspeaker comprises the first housing and the second housing combined, second housing combines the side wall ring held around the periphery of the first housing with the first housing, be provided with seal clearance between the inner side of the outward flange of the first housing and the sidewall of the second housing; Microspeaker also comprises the seal of a loop configuration, and seal is positioned at seal clearance.Between the first housing and the second housing, set up a seal, the gap between the first housing and the second housing can be filled by seal completely, compensate for partially sealed bad defect therebetween, effectively enhances sealing property therebetween.After adding seal, the utility model Microspeaker by the waterproof test of High Voltage, can meet the high request of people to Microspeaker water resistance completely.
Because seal is shaping by Shooting Technique after the first housing is combined with the second housing.The direct injection moulding of seal is combined on the first housing and the second housing, enhance the bond strength of seal and the first housing and the second housing, further improve the sealing property of Microspeaker simultaneously, and reduce the assembling difficulty of Microspeaker, improve the aesthetics of production efficiency and profile.
The inside sidewalls of the second housing is provided with the joint portion of land structure, and the position of the corresponding joint portion, inner side of the first housing is provided with the ultrasound lines with the second housing combination of ultrasound.The setting of ultrasound lines can make the first housing and the second housing can fully fit when combination of ultrasound, improve the bond strength between two housings, also can effectively prevent the injection molding material when molded seals from entering into the inner chamber of Microspeaker simultaneously, thus ensure that the acoustical behavior of Microspeaker, improve the qualification rate of product.
In sum, it is poor that the utility model Microspeaker solves Microspeaker sealing in prior art, can not meet the technical problems such as higher waterproof requirement, the utility model Microspeaker sealing is high, can by the waterproof test of High Voltage, production efficiency is high simultaneously, good looking appearance.
Accompanying drawing explanation
Fig. 1 is the decomposition texture schematic diagram of the utility model Microspeaker;
Fig. 2 is the constitutional diagram of Fig. 1;
Fig. 3 is the A-A line cutaway view of Fig. 2;
In figure: 10, the first housing, 12, ultrasound lines, the 14, first depressed part, the 16, second depressed part, 20, the second housing, 22, phonate hole, 24, joint portion, 30, ball top, 32, vibrating diaphragm, 34, voice coil loudspeaker voice coil, 340, lead-in wire, 40, limit washer, 400, support portion, 42, interior washer, 44, limit magnet, 46, internal magnet, 48, magnetic conductive board, 480, relief portion, 482, breach, 50, seal, 60, electrical connector.
Embodiment
Below in conjunction with drawings and Examples, set forth the utility model further.
The side of nearly casing center is depended in the inner side related in this specification, and outside refers to the side away from casing center.
As shown in Figure 1, Figure 2 with Fig. 3 jointly shown in, a kind of Microspeaker, for rectangular configuration, comprise shell, shell is made up of the first housing 10 combined and the second housing 20, contain vibrational system and magnetic circuit system in the space that first housing 10 and the second housing 20 surround, the inner chamber of Microspeaker is divided into the front operatic tunes and the rear operatic tunes two cavitys by vibrational system.First housing 10 and the second housing 20 are injection-moulded housing.The side sidewall of the second housing 20 is provided with phonate hole 22, and phonate hole 22 is communicated with the front operatic tunes, and vibrational system is instigated the sound that air sends and spread out of the front operatic tunes from phonate hole 22.
As Fig. 1 and Fig. 3 jointly shown in, second housing 20 is the circulus of both ends open, first housing 10 is combined in the second housing 20 near one end of the front operatic tunes, the side wall ring of second this end of housing 20, around the periphery of the first housing 10, is provided with the seal clearance of annular between the inner side of the outward flange of the first housing 10 and the sidewall of the second housing 20.Microspeaker also comprises the seal 50 of a loop configuration, and seal 50 is positioned at seal clearance.
As shown in Figure 3, seal 50 is shaping by Shooting Technique after the first housing 10 is combined with the second housing 20.Seal 50 can select the material identical with the second housing 20 hardness with the first housing 10, also hardness can be selected to be less than the material of the first housing 10 and the second housing 20 hardness, in present embodiment, the material of seal 50 is preferably silica gel, TPU (Thermoplasticpolyurethanes, TPUE rubber), TPC (ThermoplasticComposites, thermoplastic based composite material), TPR (ThermoplasticRubber, thermoplastic elastomer), PC (Polycarbonate, Merlon) or ABS (Acrylinitrilebutadienestyrenecopolymers, acrylonitrile-butadiene-styrene copolymer) in one, but be not limited to above-mentioned six kinds of materials, as long as the material shaping by Shooting Technique all can as the material of seal 50.
As shown in Figure 1, the inside sidewalls of the second housing 20 is provided with the joint portion 24 of land structure, and the surface of joint portion 24 is lower than the end face of sidewall.The position of the corresponding joint portion 24, inner side of the first housing 10 is provided with annular ultrasound lines 12, first housing 10 and is combined by Ultrasonic welding processes with the second housing 20.The setting of ultrasound lines 12 can make the first housing 10 and the second housing 20 in conjunction with time fully fit, when can prevent molded seals 50, injection molding material flows in the front operatic tunes, ensure that the acoustical behavior of Microspeaker is unaffected.
As shown in Figure 3, edge outside first housing 10 is provided with the first depressed part 14, namely the thickness of the first housing 10 edge is less than the thickness at other position, the first appearance glue space is defined between first depressed part 14 and the second housing 20, the setting of the first depressed part 14 adds the space of the seal clearance between the first housing 10 and the second housing 20, thus add the contact area of seal 50 and the first housing 10 and the second housing 20, enhance sealing.
As shown in Figure 3, the edge contacted with joint portion 24 inside first housing 10 is provided with the second depressed part 16, the thickness of the first housing 10 edge part is further less than the thickness at other position, form second between second depressed part 16 and joint portion 24 and hold glue space, the space that the seal clearance further added between the first housing 10 and the second housing 20 is set of the second depressed part 16, thus further increase the contact area of seal 50 and the first housing 10 and the second housing 20, enhance sealing, and the seal 50 between the second depressed part 16 and joint portion 24 is crushed on the inner side of the first housing 10, effectively prevent seal 50 from the probability come off between the first housing 10 and the second housing 20, improve the stability of Microspeaker water resistance.
As Fig. 1 and Fig. 3 jointly shown in, vibrational system involving vibrations assembly and voice coil loudspeaker voice coil 34, vibration component comprises the annular diaphragm 32 that outward flange is combined with the second housing 20 injection moulding, vibrating diaphragm 32 is silica gel vibrating diaphragm, also comprise and the ball top 30 that the inward flange injection moulding of vibrating diaphragm 32 is combined, voice coil loudspeaker voice coil 34 is fixed on the side of ball top 30 near magnetic circuit system.Magnetic circuit system comprises magnetic conductive board 48, the middle inside of magnetic conductive board 48 is fixed with internal magnet 46 and interior washer 42 successively, internal magnet 46 and interior washer 42 are rectangle, the marginal position being positioned at the magnetic conductive board 48 of the both sides on the long limit of internal magnet 46 and washer 42 is fixed with a strip limit magnet 44 respectively, article two, limit magnet 44 is fixed with jointly the limit washer 40 of an annular, the external dimensions of limit washer 40 is consistent with the external dimensions of magnetic conductive board 48.Internal magnet 46 and interior washer 42 form the internal magnetic circuit of magnetic circuit system, and limit magnet 44 and limit washer 40 form the external magnetic circuit of magnetic circuit system, are provided with magnetic gap between internal magnetic circuit and external magnetic circuit.One end of voice coil loudspeaker voice coil 34 is positioned at magnetic gap, the lead-in wire 340 of voice coil loudspeaker voice coil 34 is electrically connected with Microspeaker external circuit by the electrical connector 60 being fixed on the second housing 20 lower end, voice coil loudspeaker voice coil 34 does reciprocal moving up and down according to the size and Orientation of the sound wave signal of telecommunication that electrical connector 60 transmits in magnetic gap, vibrating diaphragm 32 and ball top 30 are along with the up-down vibration that moves up and down of voice coil loudspeaker voice coil 34, instigate air sounding, thus complete the power conversion between electroacoustic.
As shown in Figure 1, the middle part not being provided with the both sides of the edge of the corresponding limit washer 40 in the both sides of external magnet with magnetic conductive board 48 is respectively equipped with a support portion 400 extended to magnetic conductive board 48, and support portion 400 is perpendicular with limit washer 40.The position of the corresponding support portion 400, these both sides of the edge of magnetic conductive board 48 is respectively equipped with a breach 482, the width of breach 482 is consistent with the width of support portion 400, the degree of depth of breach 482 is consistent with the thickness of support portion 400, end winding support in magnetic circuit system combination rear support portion 400, in breach 482, can increase the intensity of magnetic circuit system.
As shown in Figure 1, the lead-in wire 340 of voice coil loudspeaker voice coil 34 is along its minor face place, both sides cabling, on magnetic conductive board 48, the position of corresponding two lead-in wire 340 cablings is respectively equipped with a relief portion 480 of sinking, namely the both sides that magnetic conductive board 48 is not provided with limit magnet are respectively provided with a relief portion 480, relief portion 480 effectively can avoid 340 phenomenons collided with magnetic conductive board 48 that go between when voice coil loudspeaker voice coil 34 moves up and down, thus it is bad to greatly reducing noise of Microspeaker etc., effectively raises the acoustical behavior of Microspeaker.
The utility model, by setting up a seal between two housings, improves the water resistance of Microspeaker greatly, makes it can meet the requirement of High Voltage waterproof test, also improve the production efficiency of Microspeaker and the aesthetics of profile simultaneously.
The utility model above-described embodiment is only between two housings, set up seal to promote illustrating of the technical scheme of water resistance to the utility model, wherein the housing of Microspeaker and internal structure are not limited in the structure described in above-described embodiment, the shell count forming Microspeaker shell is also not limited to two above-mentioned housings, also can be three housings, the technical solution of the utility model is applicable to the sealing between any one Microspeaker housing, those skilled in the art do not need to pay any creative work according to the description of above-described embodiment and just can be applied in the Microspeaker of other structure by the technical solution of the utility model, therefore no matter whether other structure of Microspeaker is same as the previously described embodiments, as long as adopt and set up seal between two housing, product in order to improve the water resistance of Microspeaker all falls in protection range of the present utility model.
The first housing related in this specification and the name of the second housing are only to distinguish technical characteristic, do not represent position relationship therebetween, assembling sequence and job order etc.
The utility model is not limited to above-mentioned concrete execution mode, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion made, all drop within protection range of the present utility model.
Claims (9)
1. Microspeaker, comprise the first housing and the second housing that combine, vibrational system and magnetic circuit system is contained in the space that described first housing and described second housing surround, it is characterized in that, described second housing combines the side wall ring held around the periphery of described first housing with described first housing, be provided with seal clearance between the inner side of the outward flange of described first housing and the described sidewall of described second housing; Described Microspeaker also comprises the seal of a loop configuration, and described seal is positioned at described seal clearance.
2. Microspeaker according to claim 1, is characterized in that, described seal is shaping by Shooting Technique after described first housing is combined with described second housing.
3. Microspeaker according to claim 2, is characterized in that, the edge in the outside of described first housing is provided with the first depressed part, forms first and hold glue space between described first depressed part and described second housing.
4. Microspeaker according to claim 3, is characterized in that, the edge of the inner side of described first housing is provided with the second depressed part, forms second and hold glue space between described second depressed part and described second housing.
5. the Microspeaker according to the arbitrary claim of claim 2 to 4, it is characterized in that, the described inside sidewalls of described second housing is provided with the joint portion of land structure, and the position of the corresponding described joint portion, inner side of described first housing is provided with the ultrasound lines with described second housing combination of ultrasound.
6. Microspeaker according to claim 5, is characterized in that, the material of described seal is the one in silica gel, TPU, TPC, TPR, PC or ABS.
7. Microspeaker according to claim 6, it is characterized in that, described magnetic circuit system comprises magnetic conductive board, described magnetic conductive board is fixed with internal magnet and limit magnet, described internal magnet and described limit magnet are fixed with interior washer and limit washer respectively, described limit washer is circulus, and the dual-side edge that described limit washer is relative is provided with the support portion extended to described magnetic conductive board, and the position of the corresponding described support portion, edge of described magnetic conductive board is provided with the breach suitable with the end of described support portion.
8. Microspeaker according to claim 7, it is characterized in that, described vibrational system comprises the vibration component combined with described second housing, described vibration component is fixed with voice coil loudspeaker voice coil near the side of described magnetic circuit system, described vibration component comprises silica gel vibrating diaphragm, and described vibrating diaphragm is combined by Shooting Technique with described second housing.
9. Microspeaker according to claim 8, is characterized in that, on described magnetic conductive board, the position of the lead-in wire of corresponding described voice coil loudspeaker voice coil is provided with sagging relief portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520465781.1U CN204761683U (en) | 2015-07-01 | 2015-07-01 | Miniature loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520465781.1U CN204761683U (en) | 2015-07-01 | 2015-07-01 | Miniature loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204761683U true CN204761683U (en) | 2015-11-11 |
Family
ID=54476347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520465781.1U Expired - Fee Related CN204761683U (en) | 2015-07-01 | 2015-07-01 | Miniature loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204761683U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017000504A1 (en) * | 2015-07-01 | 2017-01-05 | 歌尔声学股份有限公司 | Miniature loudspeaker |
| CN106535070A (en) * | 2016-12-28 | 2017-03-22 | 歌尔股份有限公司 | Micro sounder |
| CN110891224A (en) * | 2018-09-11 | 2020-03-17 | 神讯电脑(昆山)有限公司 | Waterproof loudspeaker |
-
2015
- 2015-07-01 CN CN201520465781.1U patent/CN204761683U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017000504A1 (en) * | 2015-07-01 | 2017-01-05 | 歌尔声学股份有限公司 | Miniature loudspeaker |
| US10341780B2 (en) | 2015-07-01 | 2019-07-02 | Goertek Inc. | Miniature speaker |
| CN106535070A (en) * | 2016-12-28 | 2017-03-22 | 歌尔股份有限公司 | Micro sounder |
| CN110891224A (en) * | 2018-09-11 | 2020-03-17 | 神讯电脑(昆山)有限公司 | Waterproof loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20190701 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |