CN203596905U - Loudspeaker and dustproof cap - Google Patents
Loudspeaker and dustproof cap Download PDFInfo
- Publication number
- CN203596905U CN203596905U CN201320619025.0U CN201320619025U CN203596905U CN 203596905 U CN203596905 U CN 203596905U CN 201320619025 U CN201320619025 U CN 201320619025U CN 203596905 U CN203596905 U CN 203596905U
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- voice coil
- cone
- dust cap
- loud speaker
- loudspeaker voice
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Abstract
The utility model discloses a dustproof cap and a loudspeaker. The loudspeaker comprises a dustproof cap, a magnetic circuit system, a vibration system, and a cone rack. The cone rack is used to support the vibration system during the vibration under the influence of the magnetic circuit system. The vibration system comprises a cone rack and a voice coil. The outer ring side of the cone is connected with the cone rack, and the inner ring side is connected with the upper edge part of the dustproof cap. The lower edge part of the dustproof cap is connected with the voice coil, and the voice coil is accommodated in a chamber formed by the cone rack, and is disposed above the magnetic circuit system, which is disposed in the cone rack. The loudspeaker provided by the utility model is advantageous in that the dustproof cap is used for the connection; on one hand, the inner ring side of the cone rack is configured to be in the shape of an ellipse to save the space, and on the other hand, the asymmetric connection between the cone and the voice coil can be realized; the circular shape of the voice coil can be maintained, but the shape of the voice coil is not necessary to be identical to the shape of the inner ring side of the cone.
Description
Technical field
The utility model relates to home appliance structure technical field, the loud speaker that relates in particular to a kind of dust cap and contain this dust cap.
Background technology
At present, on market, the vibrating mass of the loud speaker of common television set comprises that voice coil loudspeaker voice coil, centring disk, cone and dust cap are bonding and forms.In prior art, the dust cap of loud speaker is pasted on the top of voice coil loudspeaker voice coil.Along with television set develops the OLED epoch till now by the CRT epoch, the shell of television set also designs more and more thinlyyer thereupon, and correspondingly, the loud speaker of television set also developed into present track type by former circle.Reduce by loud speaker width, to adapt to the topology requirement of narrow frame of television set.After the narrowed width of loud speaker, originally circular voice coil loudspeaker voice coil conventionally adopts and changes little internal diameter or be replaced with track type voice coil loudspeaker voice coil.If circular voice coil loudspeaker voice coil internal diameter is dwindled, the power that voice coil loudspeaker voice coil bears can correspondingly diminish, and causes easily burning voice coil loudspeaker voice coil.If circular voice coil loudspeaker voice coil is replaced by the voice coil loudspeaker voice coil of track type, its structural strength does not have circular voice coil loudspeaker voice coil good.In addition, the voice coil loudspeaker voice coil of track type is easily distortion in motion process, and the audio distortions that causes loud speaker to send is large, is out of shape when serious at voice coil loudspeaker voice coil, and voice coil loudspeaker voice coil can produce different sound by grazing magnetic circuit, when serious, also may cause voice coil loudspeaker voice coil to burn.
Utility model content
Main purpose of the present utility model is to provide a kind of dust cap and comprises the loud speaker of this dust cap, is intended to also voice coil loudspeaker voice coil to be arranged in the limited situation of loud speaker volume circular to guarantee loadspeaker structure stability.
In order to achieve the above object, the utility model proposes a kind of dust cap, comprise oval-shaped upper along portion and be positioned at described upper circular lower to portion along subordinate side.
Preferably, the described upper minor axis along portion is less than the described lower diameter along portion.
Preferably, the described upper focus along portion is positioned at described lower on the axis of portion.
The utility model further also proposes a kind of loud speaker, comprises dust cap, magnetic circuit system, vibrational system and for supporting described vibrational system at the basin frame that is subject to vibration under described magnetic circuit system magnetic force impact, wherein,
Dust cap comprises oval-shaped upper along portion and be positioned at described upper circular lower to portion along subordinate side, described vibrational system comprises cone and voice coil loudspeaker voice coil, the outer rim side of described cone is connected with described basin frame, interior ring side is connected along portion with the upper of described dust cap, the lower of described dust cap is connected with described voice coil loudspeaker voice coil along portion, described voice coil loudspeaker voice coil is placed in the chamber that described basin frame forms and is positioned at the top of described magnetic circuit system, and described magnetic circuit system is placed in described basin frame.
Preferably, described magnetic circuit system comprises the magnetic conductive board that is fixedly connected with the bottom of described basin frame, is positioned at the magnetic conduction stem of this magnetic conductive board top, and is arranged in the magnet of described magnetic conductive board and magnetic conduction stem, described voice coil loudspeaker voice coil cover at described magnetic conduction stem directly over.
Preferably, described vibrational system also comprises centring disk, and the interior ring side of this centring disk is connected with the outer rim side of described voice coil loudspeaker voice coil, and outer rim side is fixedly connected with described basin frame.
Preferably, the described upper upper surface along portion is provided with flange.
Preferably, described cone comprises ring body and towards the curved surface that deviates from described voice coil loudspeaker voice coil one side projection, and this curved surface is connected with the oval-shaped installing hole that described body middle part is offered.
Preferably, the described upper annular groove along offering in portion for holding glue.
Preferably, described cone and dust cap are for being adhesively fixed, and described voice coil loudspeaker voice coil and dust cap are for being adhesively fixed, and described centring disk and voice coil loudspeaker voice coil and basin frame are and are adhesively fixed.
The loud speaker the utility model proposes, by dust cap is set, and the upper of dust cap is connected with cone along portion, be connected with voice coil loudspeaker voice coil along portion down, thereby must be arranged to track type in the outer rim side when cone, the interior ring side relative set ovalisation of cone is to save when space, and voice coil loudspeaker voice coil need not be arranged to ellipse and could be connected with cone.In the present embodiment, dust cap is equivalent to play connection function, make on the one hand the interior ring side of cone can be arranged to ellipse to save space, realized on the other hand the asymmetric connection of cone and voice coil loudspeaker voice coil, can make voice coil loudspeaker voice coil keep circular and need not be consistent with the interior ring side shape of cone.Circular voice coil loudspeaker voice coil is with respect to oval-shaped voice coil loudspeaker voice coil, and its structural strength is better, and voice coil loudspeaker voice coil is not easy distortion in motion process, and then has improved the structural strength of this loud speaker.In addition, in the present embodiment, dust cap also can play common dustproof effect, prevents that outside dust from entering into voice coil loudspeaker voice coil inside, avoids affecting the sounding effect of loud speaker.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model loud speaker the first embodiment;
Fig. 2 is the cross-sectional view of the A-A direction shown in Fig. 1;
Fig. 3 is the cross-sectional view of the B-B direction shown in Fig. 1;
Fig. 4 is the structural representation of dust cap in the utility model loud speaker;
Fig. 5 is the structural representation of the utility model loud speaker the second embodiment;
Fig. 6 is the cross-sectional view of the C-C direction shown in Fig. 5;
Fig. 7 is the cross-sectional view of the D-D direction shown in Fig. 5.
Realization, functional characteristics and the advantage of the utility model object, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Be described further with regard to the technical solution of the utility model below in conjunction with drawings and the specific embodiments.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model proposes a kind of loud speaker.
See figures.1.and.2, Fig. 1 is the structural representation of the utility model loud speaker the first embodiment; Fig. 2 is the cross-sectional view of the A-A direction shown in Fig. 1.
The utility model proposes the first embodiment of loud speaker.In the present embodiment, loud speaker comprises dust cap 10, magnetic circuit system 20, vibrational system 30 and for supporting vibrational system 30 at the basin frame 40 that is subject to vibration under magnetic circuit system 20 magnetic force impacts, wherein, dust cap 10 comprises oval-shaped upper along portion 11 and be positioned at upper circular lower to portion 12 along portion 11 belows, vibrational system 30 comprises cone 31 and voice coil loudspeaker voice coil 32, the outer rim side of cone 31 is connected with basin frame 40, interior ring side is connected along portion 11 with the upper of dust cap 10, the lower of dust cap 10 is connected with voice coil loudspeaker voice coil 32 along portion 12, voice coil loudspeaker voice coil 32 is placed in the chamber that basin frame 40 forms and is positioned at the top of magnetic circuit system 20, magnetic circuit system 20 is placed in basin frame 40.In the present embodiment, the outer rim side of cone 31 is track type, and interior ring side is oval.The space outerpace of loud speaker is saved on the cone 31 maximizing ground of track type.With reference to Fig. 3, voice coil loudspeaker voice coil 32 specifically comprises annular speech coil framework 321 and is wound in the coil 322 in speech coil framework 321 outsides.
Particularly, in the present embodiment, loud speaker also comprises the terminal that is fixed on basin frame 40 outsides.The fixing lead-in wire 52 in terminal 51 one end passes cone 31, then is electrically connected with the coil 322 being wound around on voice coil loudspeaker voice coil 32 by the interior ring side of cone 31.The part that wire is positioned at cone 31 upper surfaces is fixed on lead-in wire on cone 31 by glue layer 53.
The operation principle of loud speaker is as follows: in the time that the voice coil loudspeaker voice coil 32 upper coils 322 that are wound around in skeleton outside are switched on, the magnetic field that magnetic circuit system 20 produces acts on the coil 322 of energising, can judge the stressed direction of speech coil framework 321 according to left hand rule, if change sense of current in coil 322, the stressed direction of speech coil framework 321 also changes thereupon.Along with the variation of current strength and direction in coil 322, voice coil loudspeaker voice coil 32 vibrates back and forth with respect to magnetic circuit system 20, and the vibration period of voice coil loudspeaker voice coil 32 equals the cycle of input current, and Oscillation Amplitude equals the power of each momentary action electric current.And voice coil loudspeaker voice coil 32 is connected with cone 31 by dust cap 10, therefore voice coil loudspeaker voice coil 32 drives cone 31 to come and go vibration, thus medium radiative acoustic wave towards periphery, thus realize the conversion of electric energy-mechanical energy-acoustic energy.
The loud speaker proposing in the present embodiment, by dust cap 10 is set, and the upper of dust cap 10 is connected with cone 31 along portion 11, be connected with voice coil loudspeaker voice coil 32 along portion 12 down, thereby must be arranged to track type in the outer rim side when cone 31, the interior ring side relative set ovalisation of cone 31 is to save when space, and voice coil loudspeaker voice coil 32 need not be arranged to ellipse and could be connected with cone 31.In the present embodiment, dust cap 10 is equivalent to play connection function, make on the one hand the interior ring side of cone 31 can be arranged to oval to save space, realize on the other hand the asymmetric connection of cone 31 with voice coil loudspeaker voice coil 32, can make voice coil loudspeaker voice coil 32 keep circular and need not be consistent with the interior ring side shape of cone 31.Circular voice coil loudspeaker voice coil 32 is with respect to oval-shaped voice coil loudspeaker voice coil 32, and its structural strength is better, and voice coil loudspeaker voice coil 32 is not easy distortion in motion process, and then has improved the structural strength of this loud speaker.In addition, in the present embodiment, dust cap 10 also can play common dustproof effect, prevents that outside dust from entering into voice coil loudspeaker voice coil 32 inside, avoids affecting the sounding effect of loud speaker.
Further, the upper minor axis along portion 11 is less than the lower diameter along portion 12.Under, be greater than the upper minor axis along portion 11 along portion's 12 diameters, illustrate and use after this dust cap 10, with respect to the circular dust cap 10 under equal width, dust cap 10 is at cone 31 width limited in the situation that, can effectively improve the diameter of voice coil loudspeaker voice coil 32, thereby make voice coil loudspeaker voice coil 32 can bear larger power, promote the sensitivity of loud speaker, reduce the distortion of loud speaker.Take 22 × 100 loud speakers as example, traditional loudspeaker voice coil maximum reasonable radius diameter is 9.4mm, and in the present embodiment, loudspeaker voice coil maximum reasonable diameter is 13.28mm, has increased by 40% left and right with respect to speaker loop diameter in prior art.
Further, the upper focus along portion 11 is positioned at lower on the axis of portion 12.Be that dust cap 10 is axially symmetric structure.Be positioned at lower on the axis of portion 12 by the upper focus along portion 11 is set, thereby make with the voice coil loudspeaker voice coil 32 of the lower loud speaker being connected along portion 12 in the time being subject to magnetic force systems vibration, can more stably vibration be passed to cone 31 through dust cap 10, thereby improve the structural strength of the loud speaker that uses this dust cap 10.In addition, dust cap 10 is the diameter along portion 12 under axially symmetric structure maximizing ground improves, and like this, loud speaker, in the situation that width is limited, can improve the diameter of voice coil loudspeaker voice coil 32 further, thereby makes voice coil loudspeaker voice coil 32 can bear larger power, reduces the distortion of loud speaker.
Particularly, magnetic circuit system 20 comprises the magnetic conductive board 21 being fixedly connected with the bottom of basin frame 40, is positioned at the magnetic conduction stem 22 of these magnetic conductive board 21 tops, and is arranged in the magnet of magnetic conductive board 21 and magnetic conduction stem 22, voice coil loudspeaker voice coil 32 cover at magnetic conduction stem 22 directly over.
Magnetic conductive board 21, magnetic conduction stem 22 produce annular field circuit with the acting in conjunction of magnet, and the coil 322 that is wound in voice coil loudspeaker voice coil 32 skeleton outsides is arranged in field circuit.
Further, vibrational system 30 also comprises centring disk 60, and the interior ring side of this centring disk 60 is connected with the outer rim side of voice coil loudspeaker voice coil 32, and outer rim side is fixedly connected with basin frame 40.It is to guarantee that voice coil loudspeaker voice coil 32 can not produce collision with magnetic conductive board 21 and magnetic conduction stem 22 in the time of vibration that centring disk 60 effects are set.Centring disk 60 need to have great radial stiffiness and minimum axialstiffness, thereby guarantees that loud speaker has lower resonance frequency and less distortion.
Further, in conjunction with reference to Fig. 3 and Fig. 4, the upper upper surface along portion 11 is provided with flange 13.Upper along on the upper surface of portion 11, flange being set by dust cap 10, thus the high frequency performance of this loud speaker can be improved.
Further, the upper annular groove 111 along offering in portion 11 for holding glue.The interior ring side adaptation of the shape of annular groove 111 and cone 31.Particularly, in the present embodiment, dust cap 10 is that cast aluminium, injection moulding or copy paper are one-body molded.
Particularly, cone 31 and dust cap 10 are for being adhesively fixed, and voice coil loudspeaker voice coil 32 and dust cap 10 are for being adhesively fixed, and centring disk 60 is and is adhesively fixed with voice coil loudspeaker voice coil 32 and basin frame 40.Particularly, in the present embodiment, dust cap 10 is connected by being adhesively fixed with the top of voice coil loudspeaker voice coil 32.Be adhesively fixed and there is easy-to-install advantage.
The loud speaker that the present embodiment proposes can be used for TV domain and portable mini card-inserted sound box.
With reference to Fig. 5 to Fig. 7, Fig. 5 is the structural representation of the utility model loud speaker the second embodiment; Fig. 6 is the cross-sectional view of the C-C direction shown in Fig. 5; Fig. 7 is the cross-sectional view of the D-D direction shown in Fig. 5.
Based on above-mentioned the first embodiment, the utility model proposes the second embodiment of loud speaker.What the present embodiment was different from above-described embodiment is, in above-described embodiment, cone 31 is loop configuration, and in the present embodiment, cone 31 comprises ring body 311 and towards the curved surface 312 that deviates from voice coil loudspeaker voice coil 32 1 side projections, this curved surface 312 is connected with the oval-shaped installing hole that body 311 middle parts are offered.Particularly, the present embodiment mean camber 312 preferably and this body by integral forming.
The loud speaker that the present embodiment proposes, the object of the protruding curved surface 312 arranging by cone 31 middle parts is to improve the high frequency performance of loud speaker.
The utility model further also proposes a kind of dust cap.
In this preferred embodiment, dust cap 10 comprises oval-shaped upper along portion 11 and be positioned at upper circular lower to portion 12 along portion 11 belows.
Further, the upper minor axis along portion 11 is less than the lower diameter along portion 12.Under, be greater than the upper minor axis along portion 11 along portion's 12 diameters, illustrate and use after this dust cap 10, with respect to the circular dust cap 10 under equal width, this dust cap 10 is at cone 31 width limited in the situation that, improve the radius of voice coil loudspeaker voice coil 32, thereby make voice coil loudspeaker voice coil 32 can bear larger power, reduce the distortion of the loud speaker that uses this dust cap 10.
Further, the upper focus along portion 11 is positioned at lower on the axis of portion 12.Be that dust cap 10 is axially symmetric structure.By being set, the upper axis along portion 11 overlaps with the lower axis along portion 12, thereby make with the voice coil loudspeaker voice coil 32 of the lower loud speaker being connected along portion 12 in the time being subject to magnetic force systems vibration, can more stably vibration be passed to cone 31 through dust cap 10, thereby improve the structural strength of the loud speaker that uses this dust cap 10.In addition, dust cap 10 is the diameter along portion 12 under axially symmetric structure maximizing ground improves, like this, using the loud speaker of this dust cap 10 in the situation that size is limited, can improve further the diameter of voice coil loudspeaker voice coil 32, thereby make voice coil loudspeaker voice coil 32 can bear larger power, reduce the distortion of the loud speaker that uses this dust cap 10.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure transformation that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a dust cap, is characterized in that, comprises oval-shaped upper along portion and be positioned at described upper circular lower to portion along subordinate side.
2. dust cap as claimed in claim 1, is characterized in that, the described upper minor axis along portion is less than the described lower diameter along portion.
3. dust cap as claimed in claim 1, is characterized in that, the described upper focus along portion is positioned at described lower on the axis of portion.
4. a loud speaker, is characterized in that, comprises the dust cap as described in any one in claims 1 to 3, described loud speaker also comprises magnetic circuit system, vibrational system, and for supporting described vibrational system at the basin frame that is subject to vibration under described magnetic circuit system magnetic force impact, wherein
Described vibrational system comprises cone and voice coil loudspeaker voice coil, the outer rim side of described cone is connected with described basin frame, interior ring side is connected along portion with the upper of described dust cap, the lower of described dust cap is connected with described voice coil loudspeaker voice coil along portion, described voice coil loudspeaker voice coil is placed in the chamber that described basin frame forms and is positioned at the top of described magnetic circuit system, and described magnetic circuit system is placed in described basin frame.
5. loud speaker as claimed in claim 4, it is characterized in that, described magnetic circuit system comprises the magnetic conductive board being fixedly connected with the bottom of described basin frame, the magnetic conduction stem that is positioned at this magnetic conductive board top, and be arranged in the magnet of described magnetic conductive board and magnetic conduction stem, described voice coil loudspeaker voice coil cover at described magnetic conduction stem directly over.
6. loud speaker as claimed in claim 4, is characterized in that, described vibrational system also comprises centring disk, and the interior ring side of this centring disk is connected with the outer rim side of described voice coil loudspeaker voice coil, and outer rim side is fixedly connected with described basin frame.
7. loud speaker as claimed in claim 4, is characterized in that, the described upper upper surface along portion is provided with flange.
8. loud speaker as claimed in claim 4, is characterized in that, described cone comprises ring body and towards the curved surface that deviates from described voice coil loudspeaker voice coil one side projection, this curved surface is connected with the oval-shaped installing hole that described body middle part is offered.
9. loud speaker as claimed in claim 4, is characterized in that, the described upper annular groove along offering in portion for holding glue.
10. loud speaker as claimed in claim 6, is characterized in that, described cone and dust cap are for being adhesively fixed, and described voice coil loudspeaker voice coil and dust cap are for being adhesively fixed, and described centring disk and voice coil loudspeaker voice coil and basin frame are and are adhesively fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619025.0U CN203596905U (en) | 2013-10-08 | 2013-10-08 | Loudspeaker and dustproof cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619025.0U CN203596905U (en) | 2013-10-08 | 2013-10-08 | Loudspeaker and dustproof cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596905U true CN203596905U (en) | 2014-05-14 |
Family
ID=50677760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320619025.0U Expired - Fee Related CN203596905U (en) | 2013-10-08 | 2013-10-08 | Loudspeaker and dustproof cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596905U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106028241A (en) * | 2016-08-02 | 2016-10-12 | 歌尔股份有限公司 | Loudspeaker |
| CN106060731A (en) * | 2016-07-01 | 2016-10-26 | 合肥天馈信息技术有限公司 | Solar loudspeaker for use in rural communications |
| CN106060733A (en) * | 2016-07-20 | 2016-10-26 | 深圳市信维通信股份有限公司 | High-performance speakerbox and preparation method thereof |
-
2013
- 2013-10-08 CN CN201320619025.0U patent/CN203596905U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106060731A (en) * | 2016-07-01 | 2016-10-26 | 合肥天馈信息技术有限公司 | Solar loudspeaker for use in rural communications |
| CN106060733A (en) * | 2016-07-20 | 2016-10-26 | 深圳市信维通信股份有限公司 | High-performance speakerbox and preparation method thereof |
| CN106028241A (en) * | 2016-08-02 | 2016-10-12 | 歌尔股份有限公司 | Loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20161008 |