CN204761701U - Miniature loudspeaker - Google Patents
Miniature loudspeaker Download PDFInfo
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- CN204761701U CN204761701U CN201520463419.0U CN201520463419U CN204761701U CN 204761701 U CN204761701 U CN 204761701U CN 201520463419 U CN201520463419 U CN 201520463419U CN 204761701 U CN204761701 U CN 204761701U
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- limit washer
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Abstract
The utility model discloses a miniature loudspeaker relates to electro -acoustic products technical field, which comprises an outer shell, a vibration system and a magnetic circuit system are held in the housing, magnetic circuit combines including moulding plastics bian huasi on the shell, bian huasi is equipped with two at least, each bian huasi connects as an organic wholely through a material area, at each bian huasi with the shell is moulded plastics and is combined the back, follows the surface of shell will the material area breaks away from. The utility model discloses miniature loudspeaker has solved among the prior art technical problem such as miniature loudspeaker production efficiency is low, manufacturing cost height, the utility model discloses miniature loudspeaker's the equipment degree of difficulty is low, and the finished product qualification rate is high, and production efficiency is high, low in production cost, and acoustic performance is good, long service life.
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 the shell and protecgulum that combine, contains vibrational system and magnetic circuit system in the space that shell and protecgulum surround.Magnetic circuit system comprises magnetic conductive board and the internal magnetic circuit that is fixed on inside magnetic conductive board and external magnetic circuit, external magnetic circuit is made up of limit magnet and limit washer, at present, the limit washer of most Microspeaker is all be combined by Shooting Technique with shell, as shown in Figure 6, limit washer 42 is provided with four altogether, is combined respectively with four sidewall injection mouldings of shell 20.The outside of each limit washer 42 is connected with a material strip 420b, material strip 420b be provided with during shell injection moulding for location hole 426 that limit washer 42 is located.Structure four limit washers when injection moulding that this kind of each limit washer connects separately an injection moulding material strip need to be placed on mould separately, and then are unifiedly injected on shell.Because each limit washer is placed separately, be just difficult to guarantee four limit washers all in a plane, thus cause the flatness of four limit washers not good, add the difficulty of the assembling procedure of next step Microspeaker, cause the product qualified rate of Microspeaker lower; Meanwhile, each limit washer is placed separately, and operating procedure is more loaded down with trivial details, and production efficiency is low, thus causes the production cost of Microspeaker higher.
Utility model content
For above defect, technical problem to be solved in the utility model is to provide a kind of Microspeaker, and the flatness of this Microspeaker each limit washer is good, and production efficiency is high, and product qualified rate is high, and production cost is low.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of Microspeaker, comprise shell, vibrational system and magnetic circuit system is contained in described shell, described magnetic circuit system comprises injection moulding combination limit washer on the housing, described limit washer is at least provided with two, each described limit washer is connected as one by a material strip, and after each described limit washer is combined with described shell injection moulding, described material strip departs from by the outer surface along described shell.
Wherein, the outer side edges of each described limit washer is provided with the groove lacking material and formed, and on described shell, the position of corresponding described groove is provided with the projection suitable with described groove.
Wherein, the two ends of each described limit washer are equipped with the location notch lacking material and formed, and on described shell, the position of corresponding each described location notch is equipped with the positioning convex suitable with described location notch.
Wherein, the two ends of the outer side edges of each described limit washer are connected with material strip, be provided with the less shear line of thickness in the junction of each described limit washer and described material strip, after each described limit washer is combined with described shell injection moulding, along described shear line, described material strip departed from.
Wherein, described shell is rectangular configuration, and described limit washer is provided with four altogether, and four described limit washers respectively injection moulding are combined on four sidewalls of described shell.
Wherein, described magnetic circuit system also comprises four the limit magnet of secure bond on the downside of four described limit washers, the two ends of be oppositely arranged two described limit magnet are wherein equipped with the gradually little protuberance of width, and on described shell, the position of corresponding each described protuberance is equipped with the detent suitable with described protuberance.
Wherein, on described shell, the position of corresponding four described limit magnet is respectively equipped with a breach, and four described limit magnet is all positioned at corresponding described indentation, there and exposed at described outer side, and the surface of magnet exposed section, described limit flushes with the outer surface of described shell.
After have employed technique scheme, the beneficial effects of the utility model are:
Because the utility model Microspeaker comprises shell, vibrational system and magnetic circuit system is contained in shell, magnetic circuit system comprise at least two with the limit washer that shell injection moulding is combined, each limit washer is connected as one by a material strip, material strip and each limit washer is departed from after each limit washer is combined with shell injection moulding.Carrying out in shell is combined with limit washer injection moulding, the each limit washer connected as one by a material strip can disposablely be placed in mould, ensure that each limit washer is all positioned at same plane, the flatness of each limit washer is good, reduce the difficulty of the packaging technology of Microspeaker postorder, and improve the product qualified rate of Microspeaker; Each limit washer is disposable is simultaneously placed in mould, decreases operating procedure, improves and produce effect, effectively reduce production cost.
Outside due to each limit washer is provided with the groove lacking material and formed, and on shell, the position of respective slot is provided with the projection suitable with groove.The setting of groove and projection adds the contact area between each limit washer and shell, improve the firmness combined therebetween, reduce the probability that limit washer comes off from shell, improve stability and the reliability of Microspeaker, extend the useful life of Microspeaker.
Owing to being provided with the location notch lacking material and formed at the two ends of limit washer, shell is provided with the positioning convex suitable with location notch, thus the contact area further added between limit washer and shell, improve the firmness combined therebetween, reduce the probability that limit washer comes off from shell, improve stability and the reliability of Microspeaker, extend the useful life of Microspeaker.
Two ends due to two the limit magnet be oppositely arranged are equipped with the gradually little protuberance of width, and on shell, the position of corresponding each protuberance is provided with the detent suitable with protuberance.The protuberance of location is set at the two ends of limit magnet, can ensure that the detent suitable with it be arranged on shell is positioned on the sidewall of shell, namely ensure that the good location between limit magnet and shell, can ensure that again the inner space of Microspeaker is not is not occupied, thus improve the positioning precision of magnetic circuit system and the acoustical behavior of Microspeaker.
Because on shell, the position of corresponding each limit magnet is respectively equipped with a breach, limit magnet is exposed at outer side from indentation, there, and the surface of magnet exposed section, limit flushes with the outer surface of shell.Breach on shell arranges the volume that can expand magnetic circuit system to greatest extent, increases the magnetic field intensity of magnetic circuit system, thus in limited space, improves the sensitivity of Microspeaker and overall acoustical behavior to greatest extent.
In sum, the utility model Microspeaker solves that Microspeaker production efficiency in prior art is low, production cost high-technology problem, and the assembling difficulty of the utility model Microspeaker is low, and product qualified rate is high, and production efficiency is high, and production cost is low; And acoustical behavior is good, long service life.
Accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of the utility model Microspeaker;
Fig. 2 is the limit washer of the utility model Microspeaker structural representation when not being injected into shell;
Fig. 3 is the shell of the utility model Microspeaker structural representation when not being injected with limit washer;
Fig. 4 is the structural representation that the shell of the utility model Microspeaker is combined with limit washer and limit magnet;
Fig. 5 is the structural representation that the shell of the utility model Microspeaker is combined with limit washer injection moulding;
Fig. 6 is the structural representation that the shell of Microspeaker in prior art is combined with limit washer injection moulding;
In figure: 10, protecgulum, 20, shell, 22, protruding, 24, positioning convex, 26, detent, 28, breach, 30, ball top, 32, vibrating diaphragm, 34, voice coil loudspeaker voice coil, 340, voice coil leads, 40, interior washer, 42, limit washer, 420a, material strip, 420b, material strip, 422, groove, 424, location notch, 426, location hole, 428, shear line, 44, internal magnet, 46, limit magnet, 460, protuberance, 48, magnetic conductive board, 50, electrical connection shell fragment.
Embodiment
Below in conjunction with drawings and Examples, set forth the utility model further.
The side at nearly Microspeaker center is depended in the inner side related in this specification, and outside refers to the side away from Microspeaker center; The orientation related in this specification refers to the direction being provided with vibrational system, under orientation, refer to the direction being provided with magnetic circuit system.
As shown in Figure 1, a kind of Microspeaker, is rectangle structure, comprises the shell 20 and protecgulum 10 that combine, shell 20 is the circulus of the both ends open surrounded by four sidewalls, contains vibrational system and magnetic circuit system in the space that shell 20 and protecgulum 10 surround.Vibrational system comprises edge part and is fixed on vibrating diaphragm 32 before shell 20 and protecgulum 10, vibrating diaphragm 32 is fixed with ball top 30 near a middle side part of protecgulum 10, the opposite side of vibrating diaphragm 32 is fixed with voice coil loudspeaker voice coil 34, and voice coil loudspeaker voice coil 34 is formed by voice coil line coiling, and the two ends of voice coil line are provided with voice coil leads 340.Magnetic circuit system comprises the magnetic conductive board 48 be fixed on shell 20 lower surface, central part inside magnetic conductive board 48 is fixed with internal magnet 44 and interior washer 40 successively, edge part inside magnetic conductive board 48 is fixed with limit magnet 46 and limit washer 42 successively, limit magnet 46 and limit washer 42 are provided with four groups altogether, are separately fixed at the edge of four sides of magnetic conductive board 48.Internal magnet 44 and interior washer 40 form the internal magnetic circuit of magnetic circuit system, limit magnet 46 and limit washer 42 form the external magnetic circuit of magnetic circuit system, external magnetic circuit is looped around the periphery of internal magnetic circuit, and is provided with magnetic gap between external magnetic circuit and internal magnetic circuit, and the end of voice coil loudspeaker voice coil 34 is positioned at magnetic gap.
As Fig. 2, Fig. 4 and Fig. 5 jointly shown in, four limit washers 42 are connected as one by a material strip 420a, the two ends of the outer ledge of each limit washer 42 are connected with material strip 420a by a linking arm, the position that the outward flange of each limit washer 42 is connected with linking arm is provided with shear line 428, the thickness of shear line 428 is less, easily fractures.When carrying out each limit washer 42 with shell 20 injection moulding, disposable four limit washers 42 can be placed in mould simultaneously, positioned by the location hole 426 being distributed in material strip 420a periphery, ensure that the position of each limit washer 42 is accurate, after each limit washer 42 and shell 20 injection moulding are combined as a whole, shear line 428 is just in time positioned at the outer surface of shell 20, only needs material strip 420a and each limit washer 42 to be separated from along shear line 428.In practical application, the quantity of limit washer is not limited to above-mentioned four, also can be the limit washer of two turning shapes, can be connected as one equally be combined with shell injection moulding by a material strip.
As Fig. 2 and Fig. 3 jointly shown in, be injection-moulded in the outer edge of the limit washer 42 of the long edge position, both sides of shell 20, the location interval between two linking arms be namely connected at material strip 420a is provided with the arc groove 422 that multiple scarce material is formed; Be injection-moulded in the outer edge of the limit washer 42 at minor face place, shell 20 both sides, the position between two linking arms be namely connected at material strip 420a is provided with a groove 422.On shell 20, the position of corresponding each groove 422 is respectively equipped with the projection 22 suitable with each groove 422, and the setting of groove 422 adds the contact area between each limit washer 42 and shell 20, improve between each limit washer 42 and shell 20 in conjunction with firmness.
As Fig. 2, Fig. 3 and Fig. 4 jointly shown in, the two ends of four edges washer 42 are equipped with one and lack the location notch 424 that material formed, location notch 424 be extended to the center of limit washer 42 by the end face of limit washer 42 and run through the arc notch of limit washer about 42 both sides.The position of the corresponding location notch 424 of corresponding sidewall upper of shell 20 is provided with the positioning convex 24 suitable with location notch 424, the thickness of positioning convex 24 is identical with the thickness of limit washer 42, location notch 424 and positioning convex 24 cooperatively interact and namely ensure that the positioning precision of limit washer 42, also add simultaneously between limit washer 42 and shell 20 in conjunction with firmness, reduce the probability that limit washer 42 comes off from shell 20.
As Fig. 1 and Fig. 3 jointly shown in, the two ends of two the limit magnet 46 combined with the both sides long side wall of shell 20 are equipped with a protuberance 460, protuberance 460 is extended and the projection that reduces gradually of width to two ends by limit magnet 46, and the shape approximation of protuberance 460 is isosceles trapezoid.The position of the corresponding protuberance 460 of corresponding side wall lower ends of shell 20 is provided with the detent 26 suitable with protuberance 460, detent 26 is the dovetail groove matched with protuberance 460, protuberance 460 and detent 26 cooperatively interact the positioning precision ensureing limit magnet 46, improve simultaneously between two limit magnet 46 and shell 20 in conjunction with firmness.
As Fig. 1 and Fig. 4 jointly shown in, the lower end of four side sidewalls of shell 20 is equipped with a breach 28, four limit magnet 46 are all positioned at breach 28 place, limit magnet 46 is from the exposed outside at shell 20 of breach 28, and the outer surface at the exposed position of limit magnet 46 flushes with the outer surface of this side sidewall of shell 20, can ensure that in limited space the volume of magnetic circuit system is maximum, thus ensure that Microspeaker has best acoustical behavior.
As shown in Figure 1, the two ends of the side long side wall of shell 20 are fixed with an electrical connection shell fragment 50 respectively, and electrical connection shell fragment 50 is for being electrically connected the external circuit of voice coil leads 340 and Microspeaker.Voice coil loudspeaker voice coil 34 obtains the sound wave signal of telecommunication of alternation from outside by electrical connection shell fragment 50, and in magnetic gap, do reciprocal moving up and down according to the size and Orientation of the little signal of telecommunication of the sound of this alternation, vibrating diaphragm 32 and ball top 30 vibrate along with moving up and down of voice coil loudspeaker voice coil 34, thus instigate air sounding, complete the power conversion between electroacoustic.
Each limit washer is connected as one by a material strip by the utility model, disposable each limit washer can be placed in injection mold simultaneously when carrying out limit washer and shell injection moulding, not only increase production efficiency, also improve the flatness of each limit washer simultaneously, reduce assembling difficulty and the production cost of Microspeaker.
The utility model above-described embodiment is only to be connected as one by each limit washer by a material strip the utility model to carry out illustrating of technical scheme that injection moulding is combined with shell, wherein the structure of Microspeaker is not limited in above-mentioned rectangle structure, it can also be square, circular, track type etc., the technical solution of the utility model is applicable to any one and is provided with multiple limits washer, and in the Microspeaker that is combined with shell injection moulding of limit washer, 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, carry out injection moulding with shell be combined as long as by a material strip each limit washer connected as one, in order to enhance productivity, the product reducing production cost all falls in protection range of the present utility model.
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 (7)
1. Microspeaker, comprise shell, vibrational system and magnetic circuit system is contained in described shell, described magnetic circuit system comprises injection moulding combination limit washer on the housing, it is characterized in that, described limit washer is at least provided with two, and each described limit washer is connected as one by a material strip, after each described limit washer is combined with described shell injection moulding, described material strip departs from by the outer surface along described shell.
2. Microspeaker according to claim 1, is characterized in that, the outer side edges of each described limit washer is provided with the groove lacking material and formed, and on described shell, the position of corresponding described groove is provided with the projection suitable with described groove.
3. Microspeaker according to claim 2, is characterized in that, the two ends of each described limit washer are equipped with the location notch lacking material and formed, and on described shell, the position of corresponding each described location notch is equipped with the positioning convex suitable with described location notch.
4. Microspeaker according to claim 3, it is characterized in that, the two ends of the outer side edges of each described limit washer are connected with material strip, the less shear line of thickness is provided with in the junction of each described limit washer and described material strip, after each described limit washer is combined with described shell injection moulding, along described shear line, described material strip is departed from.
5. the Microspeaker according to the arbitrary claim of Claims 1-4, is characterized in that, described shell is rectangular configuration, and described limit washer is provided with four altogether, and four described limit washers respectively injection moulding are combined on four sidewalls of described shell.
6. Microspeaker according to claim 5, it is characterized in that, described magnetic circuit system also comprises four the limit magnet of secure bond on the downside of four described limit washers, the two ends of be oppositely arranged two described limit magnet are wherein equipped with the gradually little protuberance of width, and on described shell, the position of corresponding each described protuberance is equipped with the detent suitable with described protuberance.
7. Microspeaker according to claim 6, it is characterized in that, on shell, the position of corresponding four described limit magnet is respectively equipped with a breach, four described limit magnet is all positioned at corresponding described indentation, there and exposed at described outer side, and the surface of magnet exposed section, described limit flushes with the outer surface of described shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520463419.0U CN204761701U (en) | 2015-07-01 | 2015-07-01 | Miniature loudspeaker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520463419.0U CN204761701U (en) | 2015-07-01 | 2015-07-01 | Miniature loudspeaker |
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| CN204761701U true CN204761701U (en) | 2015-11-11 |
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| CN201520463419.0U Active CN204761701U (en) | 2015-07-01 | 2015-07-01 | Miniature loudspeaker |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105681977A (en) * | 2016-03-31 | 2016-06-15 | 歌尔声学股份有限公司 | Loudspeaker |
| CN107801144A (en) * | 2017-09-28 | 2018-03-13 | 深圳倍声声学技术有限公司 | The manufacture method and motor sub-assembly of a kind of motor |
| CN109788405A (en) * | 2018-12-20 | 2019-05-21 | 歌尔股份有限公司 | A kind of sounding device and assemble method |
| WO2019128439A1 (en) * | 2017-12-25 | 2019-07-04 | 歌尔股份有限公司 | Magnetic conductive plate carrier tape and sounding device module |
-
2015
- 2015-07-01 CN CN201520463419.0U patent/CN204761701U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105681977A (en) * | 2016-03-31 | 2016-06-15 | 歌尔声学股份有限公司 | Loudspeaker |
| CN105681977B (en) * | 2016-03-31 | 2019-08-02 | 歌尔股份有限公司 | Loudspeaker |
| CN107801144A (en) * | 2017-09-28 | 2018-03-13 | 深圳倍声声学技术有限公司 | The manufacture method and motor sub-assembly of a kind of motor |
| CN107801144B (en) * | 2017-09-28 | 2023-06-16 | 深圳市长盈精密技术股份有限公司 | Manufacturing method of motor and motor assembly |
| WO2019128439A1 (en) * | 2017-12-25 | 2019-07-04 | 歌尔股份有限公司 | Magnetic conductive plate carrier tape and sounding device module |
| CN109788405A (en) * | 2018-12-20 | 2019-05-21 | 歌尔股份有限公司 | A kind of sounding device and assemble method |
| CN109788405B (en) * | 2018-12-20 | 2020-08-25 | 歌尔股份有限公司 | Sound production device and assembly method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| 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. |