WO2010066229A1 - Housing having a sound-emitting housing wall - Google Patents
Housing having a sound-emitting housing wall Download PDFInfo
- Publication number
- WO2010066229A1 WO2010066229A1 PCT/DE2009/001666 DE2009001666W WO2010066229A1 WO 2010066229 A1 WO2010066229 A1 WO 2010066229A1 DE 2009001666 W DE2009001666 W DE 2009001666W WO 2010066229 A1 WO2010066229 A1 WO 2010066229A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- receiving body
- sponge
- sound
- liquid
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
Definitions
- the invention relates to a housing with a sound-emitting housing wall defining a cavity containing liquid.
- the housing wall radiates sound.
- the sound radiation can take on a disturbing extent, in particular when resonances occur.
- the sound radiation in particular of resonance amplitudes, can be significantly reduced.
- Such attenuation can be achieved by dissipating the distortion energy associated with bending vibrations in the housing by picking up some of the distortion energy from viscoelastic materials firmly bonded to the machine housing, for example, damping pads, antinoise films, or sandwich panels.
- Via woven fabric envelops a porous material, such as glass wool.
- the object of the invention is to optimize a housing according to the preamble of claim 1, in particular with regard to the sound attenuation and / or noise.
- the object is in a housing with a sound radiating housing wall defining a cavity containing liquid, achieved in that in the cavity at the sound radiating housing wall a sponge-like receiving body is arranged so that it receives a portion of the liquid and together with the liquid absorbed develops a sound-absorbing effect.
- the housing is, for example, a machine housing or machine housing part, preferably in the engine space of a motor vehicle.
- the liquid is preferably a lubricating and / or cooling medium or a hydraulic medium, such as oil.
- the invention particularly relates to housings of engines and / or transmissions of a motor vehicle, which are partially filled with oil.
- the sponge-like receiving body may, but need not, be arranged in the liquid.
- the sponge-like receiving body for example in the form of spray liquid, a portion of the liquid, for example by capillary action.
- the dissipation is due to distortions of the structures of the sponge-like receiving body together with the liquid contained therein.
- a preferred embodiment of the housing is characterized in that the sponge-like receiving body rests with the liquid surface on the sound radiating housing wall.
- the sponge-like receiving body rests with the liquid surface on the sound radiating housing wall.
- a further preferred embodiment of the housing is characterized in that the sponge-like receiving body between a support and / or support structure and the sound radiating housing wall is clamped.
- the support and / or support structure are for example reinforcing ribs, which serve to increase the strength or stability of the housing.
- the support and / or support structure may be partially spaced by the design of the sound-emitting housing wall. According to a further aspect of the invention, this distance is used specifically to pinch the sponge-like receiving body. As a result, the attachment or attachment of the sponge-like receiving body on the sound-emitting housing wall is greatly simplified.
- a further preferred embodiment of the housing is characterized in that the sponge-like receiving body is formed of a plastic foam having pores.
- the plastic foam is preferably made open-pored. The pores serve to absorb and hold the liquid.
- a further preferred embodiment of the housing is characterized in that the sponge-like receiving body is carried out statically very flexible. As a result, the attachment of the receiving body in the housing is significantly simplified. The static compliance of the receiving body can be deformed when attached to the housing wall by simply, for example, with the hands, is compressed.
- a further preferred embodiment of the housing is characterized in that the sponge-like receiving body is designed so that it has a high rigidity under a dynamic load. Due to the high rigidity under dynamic stress, a particularly good damping effect can be achieved.
- a further preferred embodiment of the housing is characterized in that the sponge-like receiving body is arranged in the cavity so that it is wetted or impregnated with spray liquid.
- the spray liquid then penetrates, for example by capillary action, into the pores or some other structure of the sponge-like receiving body and is held there.
- a further preferred embodiment of the housing is characterized in that the sponge-like receiving body in the cavity is partially disposed in the liquid. This ensures even with a stationary housing, that the sponge-like receiving body, preferably by capillary action, is impregnated with the liquid.
- the only accompanying figure 1 shows a housing 1 with a housing wall 4 to cut.
- the housing 4 limits in the housing 1 a cavity 5, which is partially filled with a liquid 6.
- the housing 1 is, for example, a machine part which emits sound in the event of an operational vibration excitation.
- a spongy receiving body 10 is disposed on the housing wall 4 in the cavity 5.
- the housing 1 is preferably a part of a motor vehicle, in particular in the engine area of the motor vehicle. Operationally, the housing 1 or components in the housing 1 with the liquid contained therein 6, preferably in the form of oil, so moved that a part of the liquid 6 in the form of sprayed liquid in the entire cavity 5 herumspritzt.
- the sponge-like receiving body 10 is wetted or impregnated with liquid.
- the sponge-like receiving body 10 can be arranged completely or at least partially in the liquid 6.
- the sponge-like receiving body 10 has a structure 12, preferably a pore structure, which serves to receive and hold the liquid. The picking up and holding of the liquid is preferably achieved or at least supported by capillary action.
- the sponge-like receiving body 10 is formed, for example, from an open-pore plastic foam and rests with a flat contact surface 14 on a flat bearing surface 15 inside of the housing 4. As a result of this planar contact, a transmission of sound or vibrations from the housing wall 4 to the sponge-like receiving body 10, in particular to the liquid contained in the sponge-like receiving body 10, is ensured in a simple manner. In the context of the present invention, it has been found that the structure-borne sound damping of the housing 1 can be significantly improved by the liquid-soaked sponge-like receiving body 10. Further (not shown) sponge-like receiving body may be attached to other locations of the housing 4.
- the sponge-like receiving body 10 between a (only indicated) support and / or support structure 20 of the housing 1 and the housing wall 4 is clamped.
- the support and / or support structure 20 serves to more stably perform or reinforce the housing 1 and includes, for example, reinforcing ribs which are integrally connected to the housing wall 4.
- the supporting and / or supporting structure 20, which is also referred to as a reinforcing structure, is partially spaced from the housing wall 4. According to a further aspect of the invention, this distance is used specifically for receiving the sponge-like receiving body 10.
- the sponge-like receiving body 10 is statically easily deformable, so that he on simple manner in the space between the support and / or support structure 20 and the housing 4 can be introduced. A further attachment of the sponge-like receiving body 10 to the housing 4 is then not required.
- the sponge-like receiving body 10 When vibrations occur during operation, the liquid-soaked sponge-like receiving body 10 is distorted. These distortions deliberately dissipate vibrational energy or distortion energy.
- the sponge-like receiving body 10 is preferably clamped with a low voltage between the housing wall 4 and the support and / or support structure 20.
- the shape of the sponge-like receiving body 10 may, at least partially, be adapted to the available receiving space between the supporting and / or supporting structure 20 and the housing wall 4. In this case, the sponge-like receiving body 10 is designed statically so yielding that it is easily adaptable to different receiving spaces.
- the sponge-like receiving body 10 has a relatively high rigidity, whereby the damping properties of the liquid-soaked receiving body 10 are significantly improved.
- the stiffness under dynamic stress is preferably adapted to the vibrations occurring during operation.
- the damping function of the receiving body 10 is further improved.
- this function of the support structure or support structure 20 is not required.
- the sponge-like receiving body 10 must otherwise be held in contact with the housing wall 4.
- the housing wall 4 may be integrally connected to the housing 1.
- the housing 4 may also be designed as a separate component, for example as a lid.
- the housing wall is a timing chain cover or a valve drive hood of a motor vehicle.
- the present invention is preferably used to dampen housing vibrations of motors and transmissions whose housing or housing parts are partially filled with oil and often have rigid support structures in the interior.
- the housing wall is a cover of an electro-hydraulic transmission control unit. In this case, the control unit in a housing which is closed by the lid, the support structure. LIST OF REFERENCE NUMBERS
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112009003124T DE112009003124A5 (en) | 2008-12-11 | 2009-11-23 | Housing with a sound-emitting housing wall |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008061587 | 2008-12-11 | ||
DE102008061587.0 | 2008-12-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010066229A1 true WO2010066229A1 (en) | 2010-06-17 |
Family
ID=42081420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2009/001666 WO2010066229A1 (en) | 2008-12-11 | 2009-11-23 | Housing having a sound-emitting housing wall |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102009054275A1 (en) |
WO (1) | WO2010066229A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016208296A1 (en) | 2016-05-13 | 2017-11-16 | Schaeffler Engineering GmbH | casing |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2494343A (en) * | 1945-04-18 | 1950-01-10 | Gen Electric | Sound absorption |
US5138722A (en) * | 1991-07-02 | 1992-08-18 | David Clark Company Inc. | Headset ear seal |
US6684976B1 (en) * | 2002-04-12 | 2004-02-03 | David Clark Company Incorporated | Headset ear seal |
DE69633042T2 (en) | 1995-03-13 | 2005-07-21 | Sumitomo Chemical Co., Ltd. | NOISE-FLUSHING COMPONENT |
DE4138145B4 (en) | 1991-11-20 | 2005-09-15 | Rauch Landmaschinenfabrik Gmbh | Drive device for a centrifugal spreader |
-
2009
- 2009-11-23 DE DE102009054275A patent/DE102009054275A1/en not_active Withdrawn
- 2009-11-23 WO PCT/DE2009/001666 patent/WO2010066229A1/en active Application Filing
- 2009-11-23 DE DE112009003124T patent/DE112009003124A5/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2494343A (en) * | 1945-04-18 | 1950-01-10 | Gen Electric | Sound absorption |
US5138722A (en) * | 1991-07-02 | 1992-08-18 | David Clark Company Inc. | Headset ear seal |
DE4138145B4 (en) | 1991-11-20 | 2005-09-15 | Rauch Landmaschinenfabrik Gmbh | Drive device for a centrifugal spreader |
DE69633042T2 (en) | 1995-03-13 | 2005-07-21 | Sumitomo Chemical Co., Ltd. | NOISE-FLUSHING COMPONENT |
US6684976B1 (en) * | 2002-04-12 | 2004-02-03 | David Clark Company Incorporated | Headset ear seal |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016208296A1 (en) | 2016-05-13 | 2017-11-16 | Schaeffler Engineering GmbH | casing |
Also Published As
Publication number | Publication date |
---|---|
DE102009054275A1 (en) | 2010-06-17 |
DE112009003124A5 (en) | 2011-11-17 |
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