CN103158438A - Low noise tire - Google Patents
Low noise tire Download PDFInfo
- Publication number
- CN103158438A CN103158438A CN2012105449198A CN201210544919A CN103158438A CN 103158438 A CN103158438 A CN 103158438A CN 2012105449198 A CN2012105449198 A CN 2012105449198A CN 201210544919 A CN201210544919 A CN 201210544919A CN 103158438 A CN103158438 A CN 103158438A
- Authority
- CN
- China
- Prior art keywords
- sound
- absorption materials
- sound absorption
- hole
- low noise
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/002—Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0007—Reinforcements made of metallic elements, e.g. cords, yarns, filaments or fibres made from metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0042—Reinforcements made of synthetic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0057—Reinforcements comprising preshaped elements, e.g. undulated or zig-zag filaments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C2009/0035—Reinforcements made of organic materials, e.g. rayon, cotton or silk
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/128—Vehicles
- G10K2210/1282—Automobiles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention relates to a low-noise tire, which can absorb noise produced in the internal tire and can reduce low noise. As the size or shape of a through hole and a noise-absorbing groove is different, noise in areas of different frequency can be absorbed when the sound wave passes through the double grooves.
Description
Technical field
Thereby the present invention relates to a kind of noise that tire is produced carries out sound-absorbing in inside tires and can fall low noise low noise tire.
Background technology
During Vehicle Driving Cycle, due to tire and ground friction generation noise, perhaps the inside tires air vibration produces noise, reduces the problem of comfort level by bus thereby exist.In order to address these problems, develop the technology of adhering to sound absorption materials in inside tires, in the past, utilized adhesives that sound absorption materials is attached to inside tires.
Yet, according to the difference of shape, the material of sound absorption materials or the position that configures etc., can only improve the noise of specific region on tire.
Technical literature formerly
Patent documentation
Patent documentation 1: Korea S openly speciallys permit communique 10-2010-0108804(and has the air-inflation tyre that noise reduction is used acoustic(al)absorbent) (open day: 2010.10.08)
Patent documentation 2: Korea S openly speciallys permit communique 10-2009-0010938(low-noise pneumatic tire) (open day: 2009.01.30)
Summary of the invention
In order to address the above problem, to provide a kind of and can carry out to the noise in wide frequency band territory the technology of sound-absorbing.
The low noise tire that one embodiment of the invention relate to, be connected with the first sound absorption materials in the tire inboard and be attached to the second sound absorption materials on described the first sound absorption materials to reduce noise, be equipped with a plurality of through holes along its length direction across spacing on described the first sound absorption materials, alongst be formed with a plurality of sound-absorbing grooves that are communicated with described through hole respectively on described the second sound absorption materials, and the cross-sectional area of described through hole is different from the cross-sectional area of described sound-absorbing groove.
The size of described through hole can be less than the size of described sound-absorbing groove.
At this moment, the size of described through hole can increase progressively towards described sound-absorbing groove.Perhaps, the size of described through hole can be greater than the size of described sound-absorbing groove.
At this moment, the size of described through hole can be successively decreased towards described sound-absorbing groove.And the shape of described through hole can be different from described sound-absorbing groove.
In addition, the thickness of described the first sound absorption materials can be different from the thickness of described the second sound absorption materials.
In addition, a plurality of described through holes separates spacing and can differ from one another.
In addition, the center of described sound-absorbing groove can be eccentric from the center of described through hole.
In addition, described the first sound absorption materials and described the second sound absorption materials can separate spacing along the circumferencial direction of tire in the tire inboard and dispose a plurality of.
According to embodiments of the invention, because size or the shape of through hole and sound-absorbing groove are different, so at sound wave by in the process of double groove, the noise in different frequency zone can be by sound-absorbing.
Description of drawings
Fig. 1 is the cutaway view that the low noise tire that one embodiment of the invention relate to is shown.
Fig. 2 illustrates the first sound absorption materials shown in Figure 1 and the block diagram of the second sound absorption materials.
Fig. 3 illustrates the first sound absorption materials shown in Figure 2 and the cutaway view of the second sound absorption materials.
Fig. 4 illustrates the first sound absorption materials that another embodiment of the present invention relates to and the cutaway view of the second sound absorption materials.
Reference numeral:
10: the first sound absorption materialss
11: through hole
20: the second sound absorption materialss
21: the sound-absorbing groove
The specific embodiment
Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that the general technical staff of the technical field of the invention easily implements.Given identical Reference numeral to similar portions in specification sheets.
Based on coordinate axle shown in Figure 2, establishing the x direction is Width, and the y direction is thickness direction, and the z direction is length direction.
Fig. 1 is the cutaway view that the low noise tire that one embodiment of the invention relate to is shown, and Fig. 2 illustrates the first sound absorption materials shown in Figure 1 and the block diagram of the second sound absorption materials, and Fig. 3 illustrates the first sound absorption materials shown in Figure 2 and the cutaway view of the second sound absorption materials.
The low noise tire that one embodiment of the invention relate to comprises: the first sound absorption materials 10 and the second sound absorption materials 20.
The first sound absorption materials 10 and the second sound absorption materials 20 are configured in inside tires, for reducing the noise that produces in tire.
The first sound absorption materials 10 and the second sound absorption materials 20 become to a direction is more microscler, and are attached on the tire inboard.
The first sound absorption materials 10 and the second sound absorption materials 20 can be with adhesive attachment such as glue or Acrylic Foam Tapes on tires.
The first sound absorption materials 10 and the second sound absorption materials 20 can be made of aerated materials, are formed with in its surface concavo-convex.Therefore, the sound wave of inside tires can to the different directions reflection on the surface of the first sound absorption materials 10 or the second sound absorption materials 20, improve noise thereby reduce acoustic wave energy.
The first sound absorption materials 10 and the second sound absorption materials 20 can use known sound absorption materials.for example, the first sound absorption materials 10 and the second sound absorption materials 20 can be by polyurethane (Polyurethane), polystyrene (Polystyrene), polypropylene (Polypropylene), polyester (Polyester), polyamide (Polyamide), rayon (Rayon), plastics, acrylic (acrylic), cellulose acetate (Acetate), cellulose (Cellulose), cotton, wool, the long filament of fiber crops etc., polyurethane (Polyurethane), polyethylene (Polyethylene), polypropylene (Polypropylene), the two or more mixtures of the fiber molding of polyvinylchloride etc. or foam molding and described material consist of.
Be equipped with a plurality of through holes 11 along its length direction across spacing on the first sound absorption materials 10.
Through hole 11 runs through the first sound absorption materials 10 and forms to the thickness direction of the first sound absorption materials 10.Through hole 11 is formed with a plurality of along the length direction of the first sound absorption materials 10, and is formed with a plurality of along the Width of the first sound absorption materials 10.
Be formed on the quantity of the through hole 11 on the first sound absorption materials 10, can be according to the area of the first sound absorption materials 10 and the area of through hole 11 etc. and different.
In addition, the cross sectional shape of through hole 11 can be different.Its cross sectional shape of through hole 11 shown in Figure 2 is circular, yet the cross sectional shape of through hole 11 can be the various shapes such as ellipse or polygon.
And the distance between through hole 11 adjacent one another are can be not identical yet.That is, through hole 11 can be on the first sound absorption materials 10 to form in a zigzag, perhaps as shown in the figure along the length direction alignment arrangements of the first sound absorption materials 10, and the spacing between each through hole 11 is different.
Be formed with a plurality of sound-absorbing grooves 21 along its length direction across spacing on the second sound absorption materials 20.
Sound-absorbing groove 21 is communicated with through hole 11, and is recessed to form on a surface of the second sound absorption materials 20 along the thickness direction of the second sound absorption materials 20.
Because sound-absorbing groove 21 is communicated with through hole 11, thus when through hole 11 is configured on the first sound absorption materials 10 brokenly, sound-absorbing groove 21 also with through hole 11 irregular being configured on the second sound absorption materials 20 in the same manner.
At this moment, the cross sectional shape of sound-absorbing groove 21 or size can be different from the cross section of through hole 11.
That is, as shown in Figure 2, the size of through hole 11 can be less than the size of described sound-absorbing groove.
The diameter in the hole that forms on sound absorption materials hour, the noise in the high frequency band territory of the short and easy radiation of absorbing wavelength, thus improve the noise in high frequency band territory.
But, as one embodiment of the invention, when being formed with the different through hole of size 11 and sound-absorbing groove 21 on the first sound absorption materials 10 and the second sound absorption materials 20, the noise of inside tires is in the sound absorption materials scattering, thereby not only improve the noise in high frequency band territory, improve simultaneously the noise in low-frequency band territory.
Particularly, sound wave is to the interior incident of through hole 11, and the sound wave that is incided in through hole 11 enters in the sound-absorbing groove 21 that is communicated with through hole 11.Sound wave is by a surface reflection of the second sound absorption materials 20, yet because through hole 11 sizes are less than sound-absorbing groove 21, so can not leak to the outside by through hole 11, and reflect on the border surface of through hole 11 and sound-absorbing groove 21, thereby by the second inner sound-absorbing of sound absorption materials 20.
The size of through hole 11 can increase progressively towards sound-absorbing groove 21.In this case, enter into the sound wave of the first sound absorption materials 10 and the second sound absorption materials 20 inside by through hole 11, the propagation distance of propagating in first, second sound absorption materials 10,20 internal reflections is compared with the above case longer.Particularly, when the cross-sectional area of through hole 11 is constant, the sound wave that incides first, second sound absorption materials 10,20 inside by through hole 11 is by scattering on the border surface between through hole 11 and sound-absorbing groove 21 after incident, and by only inner mobile at the second sound absorption materials 20 after the border surface reflection of the second sound absorption materials 20 inside.
Yet, as mentioned above, when the cross-sectional area of through hole 11 when sound-absorbing groove 21 increases progressively, incide the sound wave of first, second sound absorption materials 10,20 inside by through hole 11 by after a surface reflection of the second sound absorption materials 20, all move back and forth at the first sound absorption materials 10 and the second sound absorption materials 20 inside, carry out scattering simultaneously on the border surface of the first sound absorption materials 10 that is formed with through hole 11 or sound-absorbing groove 21 and the second sound absorption materials 20.
In addition, the border surface of and sound-absorbing groove 21 and through hole 11 constant from the cross-sectional area of through hole 11 is different along the situation of first, second sound absorption materials 10,20 the vertical formation of thickness direction, when the cross-sectional area of through hole 11 as above increases progressively, because forming, the border surface that is used for reflective sound wave tilts, so the possibility that sound wave is scattered uprises.
As mentioned above, sound wave carries out scattering at the second sound absorption materials 20 or the first sound absorption materials 10 inside, simultaneously by first, second sound absorption materials 10,20 sound-absorbings, thereby improves noise.
On the other hand, the cross sectional shape of through hole 11 and sound-absorbing groove 21 can differ from one another.As an example, the cross section of through hole 11 can form circle, and the cross section of sound-absorbing groove 21 can form ellipse or polygon.
And the cross-sectional area of through hole 11 can be constant along the thickness direction of the first sound absorption materials 10, and the cross-sectional area of sound-absorbing groove 21 increases progressively to the direction away from through hole 11 along the thickness direction of the second sound absorption materials 20.
In addition, the center of the center of sound-absorbing groove 21 and through hole 11 can be eccentric each other.
In addition, the first sound absorption materials 10 and the second sound absorption materials 20 are formed by aerated materials, on surface, the inside of the first sound absorption materials 10 that is formed with through hole 11 or be formed with on the surface, inside of the second sound absorption materials 20 of sound-absorbing groove 21 and be formed with a plurality of grooves, thereby make the easy scattering of sound wave.
The first sound absorption materials 10 and the second sound absorption materials 20 adhere to by adhesives etc. and are integral.All-in-one-piece the first sound absorption materials 10 and the second sound absorption materials 20 can be a plurality of apart from configuration at the tire medial septal standard width of a room in an old-style house along the circumferencial direction of tire.
Owing to disposing a plurality of first, second sound absorption materialss for sound-absorbing inside tires noise, thereby can improve noise reduction.
Particularly, incide the interior sound wave of through hole 11 of the first sound absorption materials 10, if when again being flowed out by through hole 11 after the second sound absorption materials 20 reflections, can be by a surface reflection of the second adjacent sound absorption materials 20 and after returning, again by through hole 11 in the first sound absorption materials 10 and the second sound absorption materials 20 scattering-ins by sound-absorbing.
On the other hand, might not be like this, but the thickness of the first sound absorption materials 10 and the second sound absorption materials 20 can differ from one another.
The thickness of the second sound absorption materials 20 is compared with the thickness of the first sound absorption materials 10 when thicker, incide the propagation distance variable length of the sound wave of the second sound absorption materials 20 inside by through hole 11, so intensity of acoustic wave dies down further.
The first sound absorption materials that another embodiment of the present invention relates to and the cutaway view of the second sound absorption materials have been shown in Fig. 4.
It is larger that the through hole 11 that another embodiment relates to and sound-absorbing groove 21 are compared its size.The diameter that is formed on the through hole 11 on the first sound absorption materials 10 is larger, and the sound wave in low-frequency band territory is uprised by the possibility of incident.Therefore, compare with the first sound absorption materials that an embodiment relates to, improve the noise effects that low-frequency band territory sound wave causes.
According to the size of through hole 11, the frequency limit that is enhanced is different, but described low frequency can be the sound wave in 100Hz to 500Hz zone.
In addition, through hole and the sound-absorbing groove of the through hole of an embodiment and sound-absorbing groove and another embodiment can form on the first sound absorption materials and the second sound absorption materials simultaneously.That is, the size of a through hole 11 that forms on the first sound absorption materials 10 can be less than the sound-absorbing groove 21 that described through hole 11 is communicated with, and the size of another through hole 11 adjacent with described through hole 11 is larger than the sound-absorbing groove 21 that its through hole 11 is communicated with.
In this case, can absorb by all-in-one-piece the first sound absorption materials 10 and the second sound absorption materials 20 noise of low frequency and high-frequency region.
According to embodiments of the invention, when the through hole that the inside tires noise differs from one another by size and sound-absorbing groove, absorb the sound wave in different frequency bands territory according to its size, thereby can improve respectively the noise with the territory.
Above; describe the preferred embodiments of the present invention in detail; but protection scope of the present invention is not limited thereto, and the general technical staff of the technical field of the invention utilizes within various modification that in claims, defined basic conception of the present invention carries out and improved form all belong to protection scope of the present invention.
Claims (10)
1. low noise tire is connected with the first sound absorption materials in the tire inboard and is attached to the second sound absorption materials on described the first sound absorption materials to reduce noise, it is characterized in that,
Be equipped with a plurality of through holes along its length direction across spacing on described the first sound absorption materials;
Alongst be formed with a plurality of sound-absorbing grooves that are communicated with described through hole respectively on described the second sound absorption materials;
The cross-sectional area of described through hole is different from the cross-sectional area of described sound-absorbing groove.
2. low noise tire according to claim 1, is characterized in that,
The size of described through hole is less than the size of described sound-absorbing groove.
3. low noise tire according to claim 2, is characterized in that,
The size of described through hole increases progressively towards described sound-absorbing groove.
4. low noise tire according to claim 1, is characterized in that,
The size of described through hole is greater than the size of described sound-absorbing groove.
5. low noise tire according to claim 4, is characterized in that,
The size of described through hole is successively decreased towards described sound-absorbing groove.
6. low noise tire according to claim 1, is characterized in that,
The shape of described through hole is different from described sound-absorbing groove.
7. low noise tire according to claim 1, is characterized in that,
The thickness of described the first sound absorption materials is different from the thickness of described the second sound absorption materials.
8. low noise tire according to claim 1, is characterized in that,
Dispose brokenly a plurality of described through holes on described the first sound absorption materials.
9. low noise tire according to claim 1, is characterized in that,
The center of described sound-absorbing groove is eccentric from the center of described through hole.
10. low noise tire according to claim 1, is characterized in that,
Described the first sound absorption materials and described the second sound absorption materials separate spacing in the tire inboard along the circumferencial direction of tire and dispose a plurality of.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110134601A KR101365969B1 (en) | 2011-12-14 | 2011-12-14 | Low noise tire |
| KR10-2011-0134601 | 2011-12-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103158438A true CN103158438A (en) | 2013-06-19 |
| CN103158438B CN103158438B (en) | 2016-05-04 |
Family
ID=48582195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210544919.8A Expired - Fee Related CN103158438B (en) | 2011-12-14 | 2012-12-14 | Low noise tire |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101365969B1 (en) |
| CN (1) | CN103158438B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI720340B (en) * | 2018-09-07 | 2021-03-01 | 正新橡膠工業股份有限公司 | Tire with noise reduction structure and manufacturing method thereof |
| CN115416433A (en) * | 2022-09-09 | 2022-12-02 | 东风汽车集团股份有限公司 | Centrifugal pendulum type perforated sound absorption tire and design method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102653143B1 (en) * | 2021-04-05 | 2024-04-02 | 넥센타이어 주식회사 | Tire |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000118207A (en) * | 1998-09-24 | 2000-04-25 | Continental Ag | Pneumatic tire having sound absorbing characteristic |
| JP2003226104A (en) * | 2002-02-05 | 2003-08-12 | Yokohama Rubber Co Ltd:The | Pneumatic tire and tire cavity resonance restricting device |
| CN1826235A (en) * | 2003-08-04 | 2006-08-30 | 横滨橡胶株式会社 | Low noise pneumatic tire |
| CN1829613A (en) * | 2003-08-04 | 2006-09-06 | 横滨橡胶株式会社 | Low noise pneumatic tire |
| CN101516643A (en) * | 2006-09-26 | 2009-08-26 | 横滨橡胶株式会社 | Tire noise reduction device and pneumatic tire |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008038629A1 (en) | 2006-09-26 | 2008-04-03 | The Yokohama Rubber Co., Ltd. | Tire noise reduction device and pneumatic tire |
| KR20100005511A (en) * | 2008-07-07 | 2010-01-15 | 넥센타이어 주식회사 | Low noise pneumatic tire attached the absorbing damper |
| KR101001822B1 (en) * | 2008-07-16 | 2010-12-15 | 금호타이어 주식회사 | a Low noise tire |
-
2011
- 2011-12-14 KR KR1020110134601A patent/KR101365969B1/en active IP Right Grant
-
2012
- 2012-12-14 CN CN201210544919.8A patent/CN103158438B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000118207A (en) * | 1998-09-24 | 2000-04-25 | Continental Ag | Pneumatic tire having sound absorbing characteristic |
| JP2003226104A (en) * | 2002-02-05 | 2003-08-12 | Yokohama Rubber Co Ltd:The | Pneumatic tire and tire cavity resonance restricting device |
| CN1826235A (en) * | 2003-08-04 | 2006-08-30 | 横滨橡胶株式会社 | Low noise pneumatic tire |
| CN1829613A (en) * | 2003-08-04 | 2006-09-06 | 横滨橡胶株式会社 | Low noise pneumatic tire |
| CN101516643A (en) * | 2006-09-26 | 2009-08-26 | 横滨橡胶株式会社 | Tire noise reduction device and pneumatic tire |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI720340B (en) * | 2018-09-07 | 2021-03-01 | 正新橡膠工業股份有限公司 | Tire with noise reduction structure and manufacturing method thereof |
| CN115416433A (en) * | 2022-09-09 | 2022-12-02 | 东风汽车集团股份有限公司 | Centrifugal pendulum type perforated sound absorption tire and design method |
| CN115416433B (en) * | 2022-09-09 | 2024-01-19 | 东风汽车集团股份有限公司 | Centrifugal pendulum type perforated sound absorption tire and design method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20130070659A (en) | 2013-06-28 |
| CN103158438B (en) | 2016-05-04 |
| KR101365969B1 (en) | 2014-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4625126B2 (en) | Apparatus and system for reducing tire and wheel noise | |
| CN104369627B (en) | Noise-suppressing device for wheel assembly | |
| CN103158438A (en) | Low noise tire | |
| CN103459205B (en) | There is the car door of speaker | |
| JP5206818B2 (en) | Sound absorbing structure for vehicle | |
| RU2014138954A (en) | Absorbent product with protruding body adjacent structure | |
| EP2906436B1 (en) | Tyre cavity noise absorber | |
| US9838769B2 (en) | Microphone shield | |
| JP2011518707A (en) | Apparatus and system for reducing tire and wheel noise | |
| JP6478471B2 (en) | Sound absorbing material | |
| ES2790950T3 (en) | Sound absorption set | |
| GB2509976A (en) | A tyre cavity noise absorber | |
| US20210010977A1 (en) | Acoustic wave superscattering | |
| CN102820029A (en) | Muffling structure | |
| US11854523B2 (en) | Sound absorber, sound absorbing panel and sound absorbing wall | |
| JP2020001623A (en) | Pneumatic tire | |
| CN105575379B (en) | Anechoic room and silencer for it | |
| CN207156591U (en) | A kind of automotive back door acoustical cotton | |
| CN110537219A (en) | Surface lining for sound absorption | |
| CN209869978U (en) | Low noise tire structure | |
| KR200480057Y1 (en) | Using micro-perforated plate and the soundproofing | |
| CN206905124U (en) | Snail tongue, air channel structure and air-conditioning internal machine | |
| JP2014024362A (en) | Pneumatic tire and method for manufacturing pneumatic tire | |
| JP5746546B2 (en) | Pneumatic tire and rim assembly | |
| KR20160012840A (en) | Soundproof wall panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20160504 Termination date: 20201214 |