CN204168461U - Loud speaker - Google Patents
Loud speaker Download PDFInfo
- Publication number
- CN204168461U CN204168461U CN201420495344.XU CN201420495344U CN204168461U CN 204168461 U CN204168461 U CN 204168461U CN 201420495344 U CN201420495344 U CN 201420495344U CN 204168461 U CN204168461 U CN 204168461U
- Authority
- CN
- China
- Prior art keywords
- loud speaker
- housing
- bass reflex
- passage
- playback unit
- 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
- 230000011514 reflex Effects 0.000 claims description 32
- 238000000465 moulding Methods 0.000 claims description 19
- 238000003801 milling Methods 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 241001503991 Consolida Species 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000007639 printing Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
- H04R1/2823—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material
- H04R1/2826—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material for loudspeaker transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/023—Screens for loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
Abstract
The utility model relates to a kind of loud speaker, and it has housing (10) and is arranged at least one acoustic transformer (38,40) in this housing.Set according to the utility model: be provided with multiple be configured in extend in housingly (10), separated from one another and for by least one acoustic transformer (38 described, 40) passage (42 of the sound wave that front side and/or rear side produce, 44,46).Realize the beneficial effects of the utility model thus, avoid the reaction of sound wave on another position of being launched by film position, reduce the distortion of loud speaker thus.
Description
Technical field
The utility model relates to a kind of loud speaker, and this loud speaker has housing and is arranged at least one acoustic transformer in this housing.
Background technology
This loud speaker manufactures substantially square box usually, and it has the antetheca towards listener, and this antetheca is equipped with one or more loud speaker frame as acoustic transformer.Loud speaker frame is assemblied on antetheca at this or is fitted into them with flushing, this is because sound should as far as possible freely be transmitted in space.This loud speaker has higher distortion or distortion factor usually, and this is harmful to sound reproduction.In addition there is the danger of the loud speaker frame of damage mechanical sensitivity due to the arranging structure of opening, people utilize cover material or analog to attempt to deal with this danger usually.These measures mostly just realize insufficient mechanical protection on the one hand, and the overcover framework be placed on loudspeaker housing causes patter patter the sound of interference on the other hand.
In addition the housing be made up as medium density fibre board (MDF) (MDF) of the material of timber or similar wood of conventional loudspeakers case is not enough to sound insulation, although this means to have internal reinforcement part, is also launched the sound of the secondary audio of distortion by housing wall.By a kind of cellular reinforcement of EP 0191595 B1 known loudspeaker housing, it should tackle this problem, but also not exclusively solves in a practical situation.
Finally it is to be noted: the sound wave produced by middle pitch playback unit and bass reproduction unit interacts relatively to their transmitting sites on corresponding film, and this causes audio distortions equally.
Utility model content
The purpose of this utility model of setting out thus is: provide a kind of civilian head to address the loud speaker of type, it can realize undistorted as far as possible sound reproduction.
In order to achieve this end, a kind of loud speaker is proposed, it has housing and is arranged at least one acoustic transformer in this housing, it is characterized in that: the passage of sound wave for being produced by front side and/or the rear side of at least one acoustic transformer described being provided with multiple structure extending in the housing separated from one anotherly.
Mainly from following understanding, that is, when Squawker launches sound openly, there is the influencing each other of the sound wave produced by the diverse location of loud-speaker diaphragm, i.e. audio distortions in the utility model.Therefore propose according to the utility model: the passage of sound wave for being produced by front side and/or the dorsal part of at least one acoustic transformer being provided with multiple structure extending in the housing separated from one anotherly.Realize the beneficial effects of the utility model thus: avoid the reaction of sound wave on another position of being launched by film position, reduce the distortion of loud speaker thus.
In favourable design of the present utility model, at least one acoustic transformer is arranged on after the antetheca of housing, and this antetheca has multiple sound through hole.The antetheca of housing is configured for the protective device of acoustic transformer thus, thus does not need extra protection component.Aptly, sound hole configuration becomes passage separated from one another and the width had separately is less than the half of the wavelength of the highest frequency produced by least one acoustic transformer.The concept of width is regarded as relevant with loud speaker work layout in space in this article.Sound propagation is in the horizontal direction more important than propagation vertically.The mentioned size restrictions of sound through hole on width prevents the acoustic resonance of inside, hole.This is also supported by following measure, that is, the plane that passage is substantially perpendicular to antetheca in preferred design of the present utility model extends and is configured to the elongated hole of the direction taper convergent of the dorsal part towards antetheca.In order to covering wide frequency range advantageously, two acoustic transformers are set, first sound transducer configuration wherein becomes middle pitch playback unit or low middle pitch playback unit, preferably dynamic cone loudspeaker, and rising tone transducer configuration becomes high pitch playback unit, preferred annular bugle loudspeaker.When bass area is released by an independent woofer module, the housing of loud speaker can design compactly.This structural design with two compact element/high pitch loudspeakers and independent bass module is known usually used as satellite system.
In particularly advantageous design in addition of the present utility model, the passage be arranged on before middle pitch playback unit has following profile, and the situation downward-extension of the film stroke of this profile sound playback under consideration unit is to this film place and form and the contour shape of this film complementation.The audio emission of the front side of middle pitch playback unit is realized by the surf zone corresponding with each passage of middle pitch playback unit membrane respectively thus and prevents interacting of the diaphragm area formed like this.
In order to improve the efficiency of middle pitch playback, housing is advantageously configured with the bass reflex housing in the bass reflex hole be arranged in antetheca, and this bass reflex hole is communicated with the dorsal part of middle pitch playback unit by the system be made up of bass reflex passage separated from one another.Bass reflex passage advantageously has following size, that is, the front side of middle pitch playback unit and the acoustics load of dorsal part are compensated, and this reduces the distortion of playback further.Flowing and/or the flowing reflection of eddy current should not be produced in this external bass reflex passage.Therefore these bass reflex passages advantageously so design, that is, these bass reflex passages direction in the housing changes is smooth curved, wherein, consider the least radius minimum longitudinal extent of its cross section being used as direction change as standard.The resonance of acoustics should not be produced in this external bass reflex passage.Therefore described bass reflex passage advantageously has following cross section, and its maximum length dimension is less than the half of the wavelength of the highest frequency of the acoustic transformer be communicated with bass reflex hole.Intermediate frequency between 80Hz to 120Hz is specified to the realistic adjustment of bass reflex system.When launching the frequency of 200Hz to 5kHz, middle pitch playback unit produces excitation to bass reflex passage, but does not produce cavity resonance.On the contrary, the frequency of 200Hz to 5kHz enters bass reflex hole from space and case volume, produced resonance and/or effacement by minor structure thereon with being obstructed.This is conducive to the different film load being avoided middle pitch playback unit.
Because housing should have intensity high as far as possible, and the structure of bass reflex passage can have complicated circuit, so housing is assembled by the drip molding of multiple tabular in particularly advantageous structural design of the present utility model.Each drip molding has space, and they form other free space of bass reflex passage and housing in an assembled form.Especially, drip molding can be configured to by the foundry goods of metal, the milling part be preferably made up of aluminium alloy or milling again or be configured by main body that 3D Method of printing makes and be threaded mutually, bonding or welding.
In order to the perfect condition of imitation sound point source on typical H.D, middle pitch playback unit can tilt towards the direction of high pitch playback unit 0.5 ° and arrange in the housing to 5 °, preferably approximately 2.5 ° ground.In the distance of about 2.5m, this effect is reached when angle is 2.5 °.
Accompanying drawing explanation
Hereafter set forth the utility model further by the embodiment schematically shown in accompanying drawing.In accompanying drawing:
Fig. 1 illustrates the front view of loud speaker with the antetheca of housing, and high pitch playback unit and middle pitch playback unit are arranged on after this antetheca;
Fig. 2 illustrates the cutaway view of the loud speaker according to Fig. 1;
Fig. 3 illustrates that one of them forms the view of the tabular drip molding of housing.
Embodiment
Loud speaker shown in the drawings has housing 10, and this housing is assembled by the drip molding 12-34 of multiple tabular.
Fig. 1 illustrates the front view of loud speaker, and this loud speaker has and forms the drip molding 12 of antetheca, antetheca be closely adjacent to each other below be provided with high pitch playback unit 38 at center, and edge side is provided with middle pitch playback unit 40.Antetheca 12 has the thickness of about 10mm and is the foundry goods of the milling again (ueberfraesen) of being made up of aluminium alloy as all the other drip moldings 14-34, has high mechanical stability thus.Antetheca is passed by multiple sound through hole 42 be arranged in the grid of rule, and these sound hole configuration become elongated hole and direction towards the case inside as passage slightly conically attenuates.Hole 42 can have following size, that is, its width is less than the half of wavelength of the highest frequency produced by high pitch playback unit, prevents from thus listening in level noticeable resonance plane formed in hole 42.With high pitch playback unit 38 specular there are multiple outlets 44 (Fig. 2) of bass reflex passage 46, these bass reflex passages are communicated with the dorsal part of middle pitch playback unit 40.Bass reflex passage so constructs and design size, makes can not produce eddy current and/or resonance in these bass reflex passages.The complicated shape of the bass reflex passage extended can be realized by the structure of housing 10 separated from one anotherly, and described housing is made up of the drip molding 12-28 of the tabular with the space be connected to each other respectively.
Antetheca is connected with drip molding 14 and 16, they have the space of the high pitch playback unit 38 for being configured to annular bugle at center, but in the region of middle pitch playback unit 40, extend to the near surface of the cone-shaped membrane of middle pitch playback unit sound through hole 42 passage shape ground and contoured fit, wherein, remaining distance is greater than the distance required by film stroke hardly.This seems to cause to be distributed in the face of the transmitting sound of middle pitch playback unit in acoustically not interactive region, and the size in these regions roughly conforms to hole 42.As can be seen in Figure 1, this size is only several percentages of the gross area respectively.This causes the rectification of launched sound wave to a certain extent and reduces the distortion of sound spectrogram.
The dorsal part region be made up of drip molding 30-34 of housing 10 is separated with the drip molding 12-28 acoustics be arranged on before them and in the space not shown further for this reason arranged, comprises electronic component and the mechanical component of frequency divider, comprise the required parts that to be connected with loud speaker electric wire, for being assigned in the frequency band being suitable for corresponding loud speaker frame by the electric music signal introduced.This frequency divider is known in principle, does not therefore need further elaboration here.
Fig. 3 illustrates the drip molding 26 with an emptying gap as the example of the labyrinth of drip molding 18-28, and they are the parts of bass reflex passage 46 respectively.Multiple boring 48 shown in the fringe region of drip molding, they are threaded mutually for making drip molding.The housing of drip molding and high pitch playback unit 38 and the housing of middle pitch playback unit 40 can be threaded mutually with large active force.Obtain loudspeaker housing thus, it is sound insulation and can not produces interference effect to sound reproduction thus.
Generally speaking can summarize as follows: the utility model relates to a kind of loud speaker, its at least one acoustic transformer 38,40 that there is housing 10 and be arranged in this housing.In order to undistorted as far as possible sound reproduction can be realized by loud speaker, propose according to utility model: be provided with multiple structure in the housing 10, separated from one another extend and the passage 42,44,46 of sound wave for being produced by front side and/or the dorsal part of at least one acoustic transformer 38,40.
Claims (17)
1. loud speaker, it has housing (10) and is arranged at least one acoustic transformer (38 in this housing, 40), it is characterized in that, be provided with multiple be configured in extend in housingly (10), separated from one another and the passage of sound wave for being produced by the front side of at least one acoustic transformer described (38,40) and/or rear side.
2. loud speaker according to claim 1, is characterized in that, at least one acoustic transformer described (38,40) is arranged on after the antetheca (12) of housing (10), and this antetheca has multiple sound through hole (42).
3. loud speaker according to claim 1 and 2, is characterized in that, sound through hole (42) forms the half that passage and the width had separately are less than the wavelength of the highest frequency produced by least one acoustic transformer described (38,40).
4. loud speaker according to claim 3, is characterized in that, the plane that passage is substantially perpendicular to antetheca (12) extends and is configured to the elongated hole of the direction taper convergent of the dorsal part towards antetheca (12).
5. loud speaker according to claim 1 and 2, it is characterized in that, be provided with two acoustic transformers, first sound transducer configuration wherein becomes middle pitch playback unit (40) or low middle pitch playback unit, and rising tone transducer configuration becomes high pitch playback unit (38).
6. loud speaker according to claim 5, is characterized in that, described first sound transducer configuration becomes dynamic cone loudspeaker and described rising tone transducer configuration circularizes bugle loudspeaker.
7. loud speaker according to claim 5, it is characterized in that, the passage be arranged on before middle pitch playback unit (40) has following profile, and the situation downward-extension of the film stroke of this profile sound playback under consideration unit (40) is until this film place and form the contour shape with this film complementation.
8. loud speaker according to claim 2, it is characterized in that, housing (10) has bass reflex hole (44), and this bass reflex hole is communicated with the dorsal part of described at least one acoustic transformer (40) by the system be made up of bass reflex passage (46) separated from one another.
9. loud speaker according to claim 8, is characterized in that, bass reflex hole (44) are arranged in antetheca (12).
10. loud speaker according to claim 8, it is characterized in that, bass reflex passage (46) has following cross section, and the maximum length dimension of this cross section is less than the half of the wavelength of the highest frequency of the acoustic transformer (40) be communicated with bass reflex hole (44).
Loud speaker according to any one of 11. according to Claim 8 to 10, is characterized in that, the least radius of the direction change of bass reflex passage (46) equals the minimum longitudinal extent of its cross section.
Loud speaker according to any one of 12. according to Claim 8 to 10, is characterized in that, the bass reflex system be made up of bass reflex hole (44) and bass reflex passage (46) is adjusted on the intermediate frequency between 80Hz to 120Hz.
13. loud speakers according to claim 1 and 2, is characterized in that, housing (10) is assembled by the drip molding (12-34) of multiple tabular.
14. loud speakers according to claim 13, it is characterized in that, drip molding (12-34) be configured to milling part or the milling be again made of metal foundry goods or be configured by main body that 3D Method of printing makes and be mutually threaded, bonding or welding.
15. loud speakers according to claim 14, is characterized in that, drip molding (12-34) is designed to the foundry goods of milling part or the milling again of being made up of aluminium alloy.
16. loud speakers according to claim 5, is characterized in that, middle pitch playback unit (40) 0.5 ° to the 5 ° ground that tilts towards the direction of high pitch playback unit (38) is arranged in housing (10).
17. loud speakers according to claim 16, is characterized in that, middle pitch playback unit (40) the 2.5 ° of ground that tilt towards the direction of high pitch playback unit (38) are arranged in housing (10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13170503.0A EP2811756B1 (en) | 2013-06-04 | 2013-06-04 | Loudspeaker |
| EP13170503.0 | 2013-06-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204168461U true CN204168461U (en) | 2015-02-18 |
Family
ID=48569973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420495344.XU Expired - Fee Related CN204168461U (en) | 2013-06-04 | 2014-06-04 | Loud speaker |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2811756B1 (en) |
| CN (1) | CN204168461U (en) |
| DK (1) | DK2811756T3 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104837098A (en) * | 2015-04-23 | 2015-08-12 | 上海交通大学 | Low and medium frequency sound insulation meta-material structure prepared by 3D printing |
| CN108370463A (en) * | 2015-10-30 | 2018-08-03 | 横向技术有限公司 | The casing of audio tweeter |
| CN111328002A (en) * | 2018-12-17 | 2020-06-23 | 海湾安全技术有限公司 | Alarm and sound device |
| CN112738668A (en) * | 2020-12-16 | 2021-04-30 | 裕克施乐塑料制品（太仓）有限公司 | Sound box shell and 3D printing manufacturing process thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7400799B2 (en) * | 2021-12-22 | 2023-12-19 | カシオ計算機株式会社 | Exterior parts and electronic musical instruments |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2193399A (en) * | 1939-03-03 | 1940-03-12 | Allan W Fisher | Acoustical apparatus |
| DE3431005A1 (en) * | 1984-08-23 | 1986-03-06 | Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig holländ. Stiftung & Co KG, 8510 Fürth | Covering of partial areas of a loudspeaker enclosure |
| GB8503389D0 (en) | 1985-02-09 | 1985-03-13 | B & W Loudspeakers | Loudspeaker enclosures |
| JP2651383B2 (en) * | 1989-03-14 | 1997-09-10 | パイオニア株式会社 | Speaker device with directivity |
| DE4036334C2 (en) * | 1990-11-15 | 1999-05-20 | Thomson Brandt Gmbh | Speaker box |
| DE29716471U1 (en) * | 1997-09-15 | 1998-07-30 | Lien Kin Lung | Hidden sound device |
| US7093688B2 (en) * | 2001-09-05 | 2006-08-22 | Samsung Electronics Co., Ltd. | Structure for preventing the generation of standing waves and a method for implementing the same |
| US8712086B2 (en) * | 2007-12-27 | 2014-04-29 | Motorola Mobility Llc | Acoustic reconfiguration devices and methods |
| TR200807969A2 (en) * | 2008-10-22 | 2010-05-21 | Vestel Elektroni̇k Sanayi̇ Ve Ti̇caret A.Ş. | Speaker grille |
-
2013
- 2013-06-04 EP EP13170503.0A patent/EP2811756B1/en not_active Not-in-force
- 2013-06-04 DK DK13170503.0T patent/DK2811756T3/en active
-
2014
- 2014-06-04 CN CN201420495344.XU patent/CN204168461U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104837098A (en) * | 2015-04-23 | 2015-08-12 | 上海交通大学 | Low and medium frequency sound insulation meta-material structure prepared by 3D printing |
| CN108370463A (en) * | 2015-10-30 | 2018-08-03 | 横向技术有限公司 | The casing of audio tweeter |
| CN111328002A (en) * | 2018-12-17 | 2020-06-23 | 海湾安全技术有限公司 | Alarm and sound device |
| CN112738668A (en) * | 2020-12-16 | 2021-04-30 | 裕克施乐塑料制品（太仓）有限公司 | Sound box shell and 3D printing manufacturing process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2811756A1 (en) | 2014-12-10 |
| EP2811756B1 (en) | 2017-04-12 |
| DK2811756T3 (en) | 2017-07-03 |
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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: 20150218 Termination date: 20210604 |