EP4200165A1 - Caisson de basse - Google Patents
Caisson de basseInfo
- Publication number
- EP4200165A1 EP4200165A1 EP21739370.1A EP21739370A EP4200165A1 EP 4200165 A1 EP4200165 A1 EP 4200165A1 EP 21739370 A EP21739370 A EP 21739370A EP 4200165 A1 EP4200165 A1 EP 4200165A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vent
- cbf
- box
- motor vehicle
- console
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000005534 acoustic noise Effects 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R11/02—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof
- B60R11/0217—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for loud-speakers
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
- B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
- B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
- B60R2011/0007—Mid-console
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
Definitions
- the invention relates to a subwoofer. It finds an advantageous application in the form of a motor vehicle equipped with such a box.
- One of the aims of the invention is to remedy at least some of the drawbacks of the prior art by providing a subwoofer which makes it possible to increase the power performance of the loudspeakers without increasing the noise and by reducing the size of the speakers.
- the invention proposes a low-frequency box comprising at least two loudspeakers and a vent, said box comprising at least two inlet mouths, two of which correspond to the locations of two of the at least two loudspeakers and one vent outlet mouth. Thanks to the invention, there is a compact box with optimized acoustic performance.
- the vent is of the laminar type, which makes it possible to reduce muzzle noises compared to a tubular vent.
- the two loudspeakers are identical, in particular of at least one hundred and ten millimeters in diameter and/or at most one hundred and fifty millimeters in diameter, which avoids acoustic differences while occupying a volume reduced by compared to traditional premium mounts.
- the section of the vent is constant along the vent, which makes it possible to have no slowing down or local acceleration of the air speed which could cause acoustic inconvenience.
- vent has a single outlet mouth is to allow the air here to exit forwards and not towards the feet of the occupants, for more comfort.
- the outlet mouthpiece is of rectangular section, which makes it possible to reduce mouth noise.
- the corners AA of the openings of the vent, and preferably all along the vent, are rounded, so as to avoid hissing.
- the laminar vent has a height greater than eighteen millimeters, which allows for a vent length of 130 millimeters not to generate acoustic discomfort.
- the vent has a constant length to section ratio along the vent, thus guaranteeing the electroacoustic performance.
- the invention also relates to a central console of a motor vehicle, comprising a low-frequency box according to the invention, said console comprising a sound-guide flange over 360 degrees completely surrounding a circumference of each loudspeaker on which it is centered. , which has advantages similar to those of the box and allowing better guidance of the sound.
- the invention also relates to a motor vehicle comprising a passenger compartment, the vehicle comprising a central console according to the invention, said passenger compartment comprising at least two front seats separated from each other by at least a part of the console, each seat forming on each side of said part of the console with a front end of the passenger compartment a space, at least two of said loudspeakers of the box each being oriented towards one of said spaces, which has advantages similar to those of the console and making it possible to improve the acoustic quality at the front.
- the two inlet mouths of the vent corresponding to the locations of two loudspeakers are each oriented towards one of said spaces and the outlet mouth of the vent opens towards the front of the vehicle, this which allows for increased comfort for the driver and front passenger.
- the console includes a side grille covering each loudspeaker, which makes it possible to protect each loudspeaker membrane from possible intrusions.
- Figure 1 shows a front view of a compliant subwoofer to the invention.
- Figure 2 shows a three-quarter view of a subwoofer according to the invention.
- Figure 3 shows an example of a method of fixing a subwoofer according to the invention.
- FIG. 4A represents a view of the subwoofer in accordance with the invention, installed in the center console in its vehicle environment, and,
- FIG. 4B shows a detail view of the previous figure without visible central console, and,
- Figure 5 shows a sectional view of the box and console assembly.
- the CBF subwoofer is preferably made of plastic material (PP, PE, ABS) with an additional filler (Talc, fiberglass, etc. ).
- the latter comprises a vent, that is to say a duct allowing the circulation of air.
- this EL vent is of the laminar type, that is to say of rectangular section, whose outlet mouth is directed towards the front of the vehicle, and the side front mouths of the EL vent correspond to the locations of the two high- speakers fitted to the CBF box, one of which radiates into the driver's feet and the other into the passenger's feet.
- this laminar EL vent and more specifically of its rectangular and non-circular CEE inlet mouth contour, with iso section, is to reduce mouth noise.
- the laminar vent EL over its entire length L is rectangular in shape, which allows better fluidity of the air and good speed, while also improving feasibility.
- This rectangular shape of the duct has less perceived muzzle noise than a circular vent.
- the dimensioning of the section depends on the expected performance in a given frequency range. Furthermore, it is preferable for its height H not to be less than 18 to 20 millimeters to avoid the creation of muzzle noise.
- the height H can then vary along the vent, and in particular shrink while maintaining the passage section constant, nevertheless it is preferable not to modify its height.
- the constant section along the vent makes it possible not to modify the speed of the air flow, which could create noise annoyances.
- the width of the vent is in this example here 130 millimeters due to the desired performance.
- the CEE inlet and CES outlet mouth contours are rounded at the corner breaks so as to reduce acoustic noise and more specifically to avoid whistling. It is the same all along the vent.
- the dimensioning characteristics of the vent EL in particular its length L of the duct and section S equal to the product of the length of section Ls by the height H of the duct, are defined according to the desired electroacoustic parameters.
- the height of the outlet mouth CES of the vent must not be less than 1/7 of the section length Ls of the vent EL, thus with a vent of 130 millimeters in section length Ls, the height H of the outlet mouth must not be less than 18 millimeters.
- the values of section length Ls and height H and the formula Length/Section L/S must be constant whatever the shape of the laminar vent (rectangular/square), or tubular (circular), the section S of the vent conditioning the speed of the airflow.
- the shape of the vent can indeed be conditioned by the implantation zone and in fact by the shape and the implantation of the box.
- the two loudspeakers are identical and are here 130 millimeters in diameter.
- the vent inlets correspond to the locations of the two loudspeakers (only one visible in this figure).
- the CBF box here comprises four fixing lugs PF positioned on the lateral sides of the CBF box, including two at the top at the front of the CBF box and two at the rear at the bottom of the CBF box, and the fixing of the lugs is carried out by a set screw nut. This method of fixing is in no way limiting, but purely indicative.
- the box CBF is located at Y0, that is to say in the center along the Y axis of the vehicle, and here corresponding to the center of the vehicle in the front zone at the level of the central console CC , and represented in its vehicle environment.
- the CBF box is fixed to the floor of the PV vehicle using fixing lugs, which are at least 3 in number.
- the CBF box is located under the part of the center console, or its trim, separating the driver and front passenger seats.
- the central console CC is positioned above the CBF box during factory assembly. In this CC console, two grids (not shown) are integrated to allow the sound of the loudspeakers of the subwoofer to be diffused.
- the grids preferably have permeabilities of at least 30%.
- a CGS sound guide collar is added to the CBF subwoofer - CC console assembly.
- the loudspeaker HP is represented at rest.
- this CGS collar is molded or glued to the console (or to its covering) CC. It is preferably made of a composite material, in particular of a matrix such as polyamide, polypropylene, or polyethylene, and in particular of the same material as the central console.
- this CGS flange can be integrated by molding into the CBF box.
- the function of this CGS flange is to guide the frequencies in an optimized manner.
- This 360-degree CGS sound-guiding bezel is centered on the HP speakers and completely surrounds the circumference of each HP speaker.
- the CGS collar comes at a maximum distance Dcgs_hp of 6 millimeters from the loudspeaker HP, preferably a maximum of 5 millimeters, in order to avoid problems of sound leakage between the box and the console.
- a foam can also be added to close the volume.
- the thickness of the flange can be of the order of 2 millimeters or more, preferably up to the material thickness of the console +/- 15%, and its height from 10 to 20 millimeters, preferably 15 millimeters.
- the grille G is located at a distance Dg_hp from the cone of the loudspeaker HP of between 11 and 20 millimeters, the distance Dg_hp being measured at the end of the cone closest to the grille G.
- a third passive loudspeaker could be added to the two loudspeakers of the CBF box, that is to say consisting only of a membrane and a basket, facing the rear of the vehicle in order to improve performance in terms of sound pressure.
- a pink noise signal standard signal used to make the frequency response curves
- this box makes it possible to completely free up the lower volume in the door trims for all levels of the audio range without having to redo the door panels. Only a small 100 millimeter loudspeaker fixed at the top of the door is added, and this throughout the range. Indeed, very often car manufacturers have a Premium audio system with small speakers (that is to say with a diameter less than about 110 millimeters) in the doors and subwoofers in the passenger compartment but in the in the case of their standard mount, they must reserve a volume to put a 165 mm loudspeaker at the bottom of the door.
- this box is available for all the audio versions, arranged at Y0 of the vehicle, and a single door panel is made for the entire upgrade in audio and interior finish.
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2008545A FR3113475B1 (fr) | 2020-08-18 | 2020-08-18 | Caisson de basse |
PCT/EP2021/068474 WO2022037837A1 (fr) | 2020-08-18 | 2021-07-05 | Caisson de basse |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4200165A1 true EP4200165A1 (fr) | 2023-06-28 |
Family
ID=73401699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21739370.1A Pending EP4200165A1 (fr) | 2020-08-18 | 2021-07-05 | Caisson de basse |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4200165A1 (fr) |
FR (1) | FR3113475B1 (fr) |
WO (1) | WO2022037837A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2623344A (en) * | 2022-10-13 | 2024-04-17 | Nissan Motor Mfg Uk Ltd | Loudspeaker mounting |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11196487A (ja) * | 1998-01-06 | 1999-07-21 | Sony Corp | スピーカ装置 |
FR2819974A1 (fr) * | 2001-01-24 | 2002-07-26 | Thomson Licensing Sa | Enceinte acoustique et appareil audiovisuel comportant une telle enceinte |
JP2010215074A (ja) | 2009-03-16 | 2010-09-30 | Molten Corp | 車両用スピーカー装置 |
CN202138311U (zh) | 2010-11-30 | 2012-02-08 | 靳育生 | 一种汽车专用扶手箱低音炮 |
JP5231586B2 (ja) | 2011-01-21 | 2013-07-10 | ヤフー株式会社 | 投稿情報管理装置、投稿情報管理方法、投稿情報管理プログラム |
JP2020121604A (ja) * | 2019-01-29 | 2020-08-13 | 株式会社デンソーテン | スピーカ装置 |
-
2020
- 2020-08-18 FR FR2008545A patent/FR3113475B1/fr active Active
-
2021
- 2021-07-05 EP EP21739370.1A patent/EP4200165A1/fr active Pending
- 2021-07-05 WO PCT/EP2021/068474 patent/WO2022037837A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
WO2022037837A1 (fr) | 2022-02-24 |
FR3113475B1 (fr) | 2022-11-04 |
FR3113475A1 (fr) | 2022-02-25 |
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Legal Events
Date | Code | Title | Description |
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STAA | Information on the status of an ep patent application or granted ep patent |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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STAA | Information on the status of an ep patent application or granted ep patent |
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17P | Request for examination filed |
Effective date: 20230210 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
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17Q | First examination report despatched |
Effective date: 20231201 |