CN202602881U - Low-distortion loudspeaker - Google Patents
Low-distortion loudspeaker Download PDFInfo
- Publication number
- CN202602881U CN202602881U CN 201220281984 CN201220281984U CN202602881U CN 202602881 U CN202602881 U CN 202602881U CN 201220281984 CN201220281984 CN 201220281984 CN 201220281984 U CN201220281984 U CN 201220281984U CN 202602881 U CN202602881 U CN 202602881U
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- China
- Prior art keywords
- vibrating diaphragm
- housing
- low
- cup
- magnetic pole
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- 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
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- 238000013016 damping Methods 0.000 claims abstract description 27
- 239000004744 fabric Substances 0.000 claims abstract description 20
- 239000011148 porous material Substances 0.000 claims description 26
- 238000004891 communication Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract 2
- 239000003570 air Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- VMQPMGHYRISRHO-UHFFFAOYSA-N benzvalene Chemical group C1=CC2C3C1C32 VMQPMGHYRISRHO-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002889 sympathetic effect Effects 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model discloses a low-distortion loudspeaker, comprising a magnetic pole component and a vibration membrane component which are installed on the corresponding part of the middle part of an inner cavity of a shell; the shell is provided with a PCB (printed circuit board) which is electrically connected with the vibration membrane component; a back hole which is used for communicating the inner cavity of the shell with the exterior is arranged on the bottom of the shell; damping cloth which covers the back hole is pasted on the bottom surface in the shell; the damping cloth is in a circular ring shape, and is sleeved on the outer periphery of the magnetic pole component; the shell comprises a cylindrical U-shaped cup and a support which is fixedly and annularly sleeved on the outer periphery of the U-shaped cup; the back hole and the damping cloth are arranged on the support; and a damping layer is pasted on the inner side surface of the U-shaped cup. The low-distortion loudspeaker by adopting the structure is reasonable in structure, tiny in internal interference, low in sound distortion, and is especially suitable for the sound playing occasions with a high sound quality requirement.
Description
Technical field
The utility model relates to a kind of low-distortion loudspeaker.
Background technology
Loud speaker is a kind ofly to change the signal of telecommunication energy transducer of acoustical signal into, and therefore, the performance quality of loud speaker is very big to the influence of tonequality.Loud speaker is a device the weakest in stereo set, and for acoustics, it is again most important parts.Loud speaker of a great variety, and price differs greatly.The audio frequency electric energy is through electromagnetism, and piezoelectricity or electrostatic effect make the vibration of its cone or diaphragm and produce resonance (sympathetic response) with ambient air and sound.Divide moving-coil type (electrodynamic type), condenser type (electrostatic), piezoelectric type (crystal or pottery), electromagnetic type (compressed spring type), the gentle dynamic formula loud speaker of ionization minor etc. by transducing mechanism and structure; Dynamic speaker has that electroacoustic performance is good, sound construction, low cost and other advantages, is widely used; By acoustic radiation material separation benzvalene form, horn formula, diaphragm type etc.Loud speaker is pressed the cone shape and is divided circle, ellipse, dual cone and rubber ring; Divide bass, middle pitch, high pitch by operating frequency, have also be divided into the recorder special use, television set is special-purpose, common and high-fidelity loudspeaker etc.; Divide Low ESR and high impedance by the voice coil loudspeaker voice coil impedance; Divide straight spoke and ambient sound etc. by effect
Traditional coil-moving speaker generally comprises and is installed in corresponding magnetic pole component and the vibrating diaphragm assembly that is provided with in housing inner chamber middle part, and housing is provided with the pcb board that is connected with the vibrating diaphragm electrical component.The operation principle of transmission coil-moving speaker is; Transmit the acoustic current-meter signal through pcb board to the vibrating diaphragm assembly; The magnetic field that this signal of telecommunication changes in the vibrating diaphragm assembly; And produce the phenomenon of cherishing mutually or repelling each other, thereby realize that the vibrating diaphragm assembly is with the function of signal of telecommunication vibration to sound with the intrinsic magnetic field of magnetic pole component.Conventional loudspeakers can realize the conversion of the signal of telecommunication and voice signal; But have following weak point: 1, vibrating diaphragm assembly and inner walls constitute enclosure space; Can prevent effectively that extraneous dust from getting into; But can increase the obstruction of vibrating diaphragm assembly when vibration, reduce the vibration amplitude of vibrating diaphragm assembly, increase the distortion factor of sound; 2, because inner walls is generally planar structure; Therefore the rattle of vibrating diaphragm assembly generation can shake or echo in stronger the returning of inner walls generation; Will produce stronger influence or interference to the vibration of vibrating diaphragm assembly like this, be unfavorable for that the vibrating diaphragm assembly produces real sound.
Summary of the invention
The technical problem that the utility model will solve is to provide a kind of rational in infrastructure to above-mentioned deficiency, and internal interference is little, the low-distortion loudspeaker that audio distortions is little.
For solving the problems of the technologies described above; This low-distortion loudspeaker comprises magnetic pole component and the vibrating diaphragm assembly that is installed in the corresponding setting in housing inner chamber middle part; Housing is provided with the pcb board that is connected with the vibrating diaphragm electrical component; Its design feature is: housing bottom is provided with the dorsal pore that the housing inner chamber is in communication with the outside, and is pasted with the damping cloth that covers dorsal pore on the housing inner bottom surface.
The low-distortion loudspeaker of this structure is to realize that through ventilative buffer structure internal interference is little, and audio distortions is little.
Ventilative buffer structure mainly comprises dorsal pore that is arranged on the housing and the damping cloth that covers dorsal pore.Wherein, dorsal pore connects outer face setting in the housing, that is to say that dorsal pore has been communicated with housing inner chamber and ambient atmosphere.For convenient narration, the cavity between vibrating diaphragm assembly and the inner walls is called the vibrating diaphragm inner chamber.Like this, in the vibrating diaphragm assembly lateral surface just respectively with atmosphere together, so the air pressure of vibrating diaphragm assembly both sides all is atmospheric pressure.When the vibrating diaphragm assembly receives electromagnetic field effect and when vibrating, if the vibrating diaphragm assembly moves to the magnetic pole component direction, the air in the vibrating diaphragm inner chamber can pressurized and pressure increases.But the air of pressurized can enter in the atmosphere through dorsal pore fast, till the vibrating diaphragm chamber pressure reaches atmospheric pressure.If the vibrating diaphragm assembly is to moving away from the magnetic pole component direction, the air in the vibrating diaphragm inner chamber can be drawn and pressure reduces.This moment, outside air can get in the vibrating diaphragm inner chamber through dorsal pore fast, till the vibrating diaphragm chamber pressure reaches atmospheric pressure.Like this, no matter the vibrating diaphragm assembly can in time be regulated the vibrating diaphragm chamber pressure to which direction vibration through dorsal pore, the internal interference or the phenomenon of being obstructed when effectively having avoided the vibration of conventional loudspeakers vibrating diaphragm assembly, the distortion factor when greatly reducing the vibration of vibrating diaphragm assembly.Said damping cloth sticks on the housing inner bottom surface; And cover on the inner face of dorsal pore; Can prevent that so not only extraneous dust from getting into the vibrating diaphragm inner chamber; And damping cloth can also cushion from the sound wave of housing inner bottom surface backspace, reduced the internal interference of this low-distortion loudspeaker, helps to improve the sound quality of output.
As improvement, said damping cloth is annular, is sleeved on the magnetic pole component periphery.
Damping cloth is arranged to be sleeved on the annular of magnetic pole component periphery; Not only can increase the cushion area of housing inner bottom surface to sound; Reduce audio distortions, and when mounting damping cloth more comprehensively, convenient, need not to worry whether to cover the problem of dorsal pore inner face; Reduced manufacture difficulty, helped to enhance productivity.
As further improvement, said housing comprises cylindric U cup and the support of Fixing shrink ring on U cup periphery, and said dorsal pore and damping cloth are arranged on the support, are pasted with damping layer on the medial surface of said U cup.
Housing is arranged to the integrative-structure that is fixed together by U cup and support, can only the U cup be made by ferrimagnet, think that magnetic pole component provides suitable magnetic circuit passage, help to improve tonequality and reduce material cost.On U cup inner surface, apply damping layer, can play and reduce of the effect of U cup inner surface, reduced the interference problem of enclosure interior more all sidedly, improved sound quality greatly sound reflection.
In sum, adopt the low-distortion loudspeaker of this structure, rational in infrastructure, internal interference is little, and audio distortions is little, is particularly suitable for the demanding broadcast occasion of sound quality is used.
Description of drawings
In conjunction with accompanying drawing the utility model is explained further details:
Fig. 1 is the structural representation of the utility model.
Among the figure: 1 is housing, and 2 is magnetic pole component, and 3 is the vibrating diaphragm assembly, and 4 is pcb board, and 5 is dorsal pore, and 6 are damping cloth, and 7 is the U cup, and 8 is support, and 9 is damping layer, and 10 is magnet steel, and 11 is pole piece, and 12 is vibrating diaphragm, and 13 is coil.
Embodiment
As shown in Figure 1, this low-distortion loudspeaker comprises housing 1, and housing 1 is cylindric.Housing 1 comprises U cup 7, and U cup 7 is the cylindric of open upper end, and U cup 7 is made by ferrimagnet.In the present embodiment, U cup 7 is circular work durm.Retainer ring is with support 8 on U cup 7 outer walls, and support 8 is circular, is processed by plastic material.Housing 1 is arranged to the integrative-structure that is fixed together by U cup 7 and support 8, can is provided with the material of U cup 7 and support 8 different, help to reduce production costs.Fixedly be pasted with magnetic pole component 2 on U cup 7 inner bottom surfaces, magnetic pole component 2 is cylindric.Magnetic pole component 2 comprises the pole piece that sticks on successively up and down together 11 and magnet steel 10, and pole piece 11 is processed by ferrimagnet, has the effect of the magnetic line of force guiding that magnet steel is produced.U cup 7 and magnetic pole component 2 coaxial settings, and U cup 7 internal diameters are greater than the diameter of magnetic pole component 2, so, just there is the gap between U cup 7 inwalls and magnetic pole component 2 outer walls.Like this, can the closely magnetic circuit passage of circulating type be provided for magnetic pole component 2, help to improve tonequality through U cup 7.
Support 8 top seals are pasted with vibrating diaphragm assembly 3, and vibrating diaphragm assembly 3 is positioned at magnetic pole component 2 tops.Vibrating diaphragm assembly 3 comprises discoid vibrating diaphragm 12 and circular coil 13, and coil 13 is coaxial to be installed in vibrating diaphragm 12 belows, and coil 13 bottoms extend in the gap between U cup 7 inwalls and magnetic pole component 2 outer walls.Housing is equipped with pcb board 4 on 1 bottom surface, pcb board 4 and coil 13 corresponding being electrically connected.When passing through pcb board 4 when coil 13 feeds the current signal of representative voices, coil 13 can produce magnetic fields and repel each other or suction reaction mutually with the magnetic field that magnetic pole component 2 produces, and like this, coil 13 just moves up and down and drive vibrating diaphragm 12 vibration soundings in above-mentioned gap.
Housing 1 is provided with dorsal pore 5, and dorsal pore 5 is a cylindrical bore, and dorsal pore 5 connects outer face setting in the housing 1.That is to say that dorsal pore 5 has been communicated with housing 1 inner chamber and ambient atmosphere.For convenient narration, the cavity between vibrating diaphragm assembly 3 and housing 1 inwall is called vibrating diaphragm 12 inner chambers.Like this, in the vibrating diaphragm assembly 3 lateral surfaces just respectively with atmosphere together, so the air pressure of vibrating diaphragm assembly 3 both sides all is atmospheric pressure.When vibrating diaphragm assembly 3 receives electromagnetic field effect and when vibrating, if vibrating diaphragm assembly 3 moves to magnetic pole component 2 directions, the air in vibrating diaphragm 12 inner chambers can pressurized and pressure increases.But the air of pressurized can enter in the atmosphere through dorsal pore 5 fast, till vibrating diaphragm 12 chamber pressures reach atmospheric pressure.If vibrating diaphragm assembly 3 is to moving away from magnetic pole component 2 directions, the air in vibrating diaphragm 12 inner chambers can be drawn and pressure reduces.This moment, outside air can get in vibrating diaphragm 12 inner chambers, till vibrating diaphragm 12 chamber pressures reach atmospheric pressure through dorsal pore 5 fast.Like this; No matter vibrating diaphragm assembly 3 is to which direction vibration; Can in time regulate vibrating diaphragm 12 chamber pressures through dorsal pore 5, the internal interference or the phenomenon of being obstructed when effectively having avoided 3 vibrations of conventional loudspeakers vibrating diaphragm assembly, the distortion factor when greatly reducing 3 vibrations of vibrating diaphragm assembly.Said damping cloth 6 sticks on housing 1 inner bottom surface; And cover on the inner face of dorsal pore 5; Can prevent that so not only extraneous dust from getting into vibrating diaphragm 12 inner chambers; And damping cloth 6 can also cushion from the sound wave of housing 1 inner bottom surface backspace, reduced the internal interference of this low-distortion loudspeaker, helps to improve the sound quality of output.
In the present embodiment, said damping cloth 6 is annular, is sleeved on magnetic pole component 2 peripheries.Like this, not only can increase the cushion area of housing 1 inner bottom surface, reduce audio distortions sound; And it is comprehensive more, convenient when mounting damping cloth 6; Need not to worry whether to cover the problem of dorsal pore 5 inner faces, reduced manufacture difficulty, help to enhance productivity.
In the present embodiment, said dorsal pore 5 is arranged on the support 8 with damping cloth 6, is pasted with damping layer 9 on the medial surface of said U cup 7.On U cup 7 inner surfaces, apply damping layer 9, can play and reduce of the effect of U cup 7 inner surfaces, reduced the interference problem of housing 1 inside more all sidedly, improved sound quality greatly sound reflection.
Claims (3)
1. low-distortion loudspeaker; Comprise and be installed in corresponding magnetic pole component (2) and the vibrating diaphragm assembly (3) that is provided with in housing (1) inner chamber middle part; Housing (1) is provided with the pcb board (4) that is electrically connected with vibrating diaphragm assembly (3); It is characterized in that: housing (1) bottom is provided with the dorsal pore (5) that housing (1) inner chamber is in communication with the outside, and is pasted with the damping cloth (6) that covers dorsal pore (5) on housing (1) inner bottom surface.
2. low-distortion loudspeaker as claimed in claim 1 is characterized in that: said damping cloth (6) is annular, is sleeved on magnetic pole component (2) periphery.
3. low-distortion loudspeaker as claimed in claim 2; It is characterized in that: said housing (1) comprises cylindric U cup (7) and the support (8) of Fixing shrink ring on U cup (7) periphery; Said dorsal pore (5) and damping cloth (6) are arranged on the support (8), are pasted with damping layer (9) on the medial surface of said U cup (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220281984 CN202602881U (en) | 2012-06-15 | 2012-06-15 | Low-distortion loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220281984 CN202602881U (en) | 2012-06-15 | 2012-06-15 | Low-distortion loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202602881U true CN202602881U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220281984 Expired - Fee Related CN202602881U (en) | 2012-06-15 | 2012-06-15 | Low-distortion loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202602881U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281655A (en) * | 2013-04-16 | 2013-09-04 | 沙文金 | Double-voice coil moving-coil loudspeaker |
| CN103347235A (en) * | 2013-06-14 | 2013-10-09 | 歌尔声学股份有限公司 | Sound production device |
| CN105072515A (en) * | 2015-07-20 | 2015-11-18 | 朝阳聚声泰（信丰）科技有限公司 | Hot-melt loudspeaker support and manufacturing method thereof |
| CN105072514A (en) * | 2015-07-20 | 2015-11-18 | 朝阳聚声泰（信丰）科技有限公司 | Loudspeaker support |
| CN106114032A (en) * | 2016-06-30 | 2016-11-16 | 合肥卡星数控设备有限公司 | A kind of multi-functional full-automatic carving machine of reflecting film |
| CN103347235B (en) * | 2013-06-14 | 2016-11-30 | 歌尔声学股份有限公司 | Microphone device |
-
2012
- 2012-06-15 CN CN 201220281984 patent/CN202602881U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103281655A (en) * | 2013-04-16 | 2013-09-04 | 沙文金 | Double-voice coil moving-coil loudspeaker |
| CN103347235A (en) * | 2013-06-14 | 2013-10-09 | 歌尔声学股份有限公司 | Sound production device |
| CN103347235B (en) * | 2013-06-14 | 2016-11-30 | 歌尔声学股份有限公司 | Microphone device |
| CN105072515A (en) * | 2015-07-20 | 2015-11-18 | 朝阳聚声泰（信丰）科技有限公司 | Hot-melt loudspeaker support and manufacturing method thereof |
| CN105072514A (en) * | 2015-07-20 | 2015-11-18 | 朝阳聚声泰（信丰）科技有限公司 | Loudspeaker support |
| CN106114032A (en) * | 2016-06-30 | 2016-11-16 | 合肥卡星数控设备有限公司 | A kind of multi-functional full-automatic carving machine of reflecting film |
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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 |
Granted publication date: 20121212 Termination date: 20140615 |
|
| EXPY | Termination of patent right or utility model |