CN112644231A - Sound piece is inhaled to tire - Google Patents
Sound piece is inhaled to tire Download PDFInfo
- Publication number
- CN112644231A CN112644231A CN201910958225.0A CN201910958225A CN112644231A CN 112644231 A CN112644231 A CN 112644231A CN 201910958225 A CN201910958225 A CN 201910958225A CN 112644231 A CN112644231 A CN 112644231A
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- Prior art keywords
- tire
- sound absorbing
- groove
- absorbing member
- ratio
- 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
- 239000011148 porous material Substances 0.000 claims abstract description 4
- 239000006096 absorbing agent Substances 0.000 claims description 22
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001605 fetal effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
A tire sound absorbing member for being disposed inside a tire, the tire sound absorbing member being made of a porous material and having a first side and a second side, the first side facing the inner circumferential surface of the tire, the second side facing away from the inner circumferential surface of the tire; the first side is provided with two convex ribs and a groove, the two convex ribs are connected with the inner circumferential surface of the tire, and the groove is positioned between the two convex ribs; wherein, from the section of the tire sound absorbing piece, the opening of the groove has an opening width, the tire sound absorbing piece has a maximum width, and the ratio of the opening width to the maximum width is between 20% and 60%. Through the design of the sound absorbing piece, the vibration of the air in the tire cavity can be absorbed, so that the noise transmitted from the tire to the outside is reduced.
Description
Technical Field
The invention relates to a tire sound absorbing member; in particular to a sound absorbing member for a tire, which is provided in a tire to reduce noise generated when the tire rolls.
Background
Tire noise is a problem which is always quite troubling, and is known to be caused by friction between the tread of the tire and the road surface, and is also caused by cavity resonance sound formed by vibration generated by filled air in a tire cavity, wherein the cavity resonance sound of the tire is mainly low-frequency noise with the audio frequency between 200Hz and 250Hz, so that in order to provide more comfortable riding experience for driving and passengers, besides safety, reduction of the tire noise is one of the main targets pursued by various tire manufacturing practitioners.
Disclosure of Invention
Accordingly, the present invention is directed to a sound absorbing member for a tire, which is disposed inside a tire and can reduce cavity resonance noise generated when the tire rolls.
The sound absorbing member is made of porous material, and has a first side and a second side, wherein the first side faces the inner circumferential surface of the tire, and the second side faces away from the inner circumferential surface of the tire; the first side is provided with two convex ribs and a groove, the two convex ribs are connected with the inner circumferential surface of the tire, and the groove is positioned between the two convex ribs; wherein, from the cross section observation of this tire sound absorbing piece, the opening of this recess has an opening width, and this tire sound absorbing piece has a maximum width, and the ratio of this opening width and this maximum width is between 20% to 60%.
The invention has the advantages that the structural design of the tire sound absorption piece can absorb the vibration of air in the tire cavity so as to reduce the noise transmitted from the tire to the outside.
Drawings
Fig. 1 is a schematic view of a sound absorbing member for a tire according to a first embodiment of the present invention installed in a tire.
FIG. 2 is a cross-sectional view of a sound absorbing member for a tire according to a first embodiment of the present invention.
FIG. 3 is an XY dispersion plot of decibels of noise versus the opening ratio for a frequency of about 244 measured for a tire having the tire sound absorbing member of the present invention installed in a tire, wherein the opening ratio is on the X-axis and the noise is on the Y-axis.
FIG. 4 is a cross-sectional view of a sound absorbing member for a tire according to a second embodiment of the present invention.
FIG. 5 is a cross-sectional view of a sound absorbing member for a tire according to a third embodiment of the present invention.
FIG. 6 is a cross-sectional view of a sound absorbing member for a tire according to a fourth embodiment of the present invention.
FIG. 7 is a cross-sectional view of a sound absorbing member for a tire according to a fifth embodiment of the present invention.
FIG. 8 is a cross-sectional view of a sound absorbing member for a tire according to a sixth embodiment of the present invention.
FIG. 9 is a sectional view of a sound absorbing member for a tire according to a seventh embodiment of the present invention.
FIG. 10 is a schematic cross-sectional side view of a plurality of sound absorbers spaced apart from each other on the inner circumferential surface of a tire according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the present invention, the following detailed description will be given with reference to the accompanying drawings. Referring to fig. 1 to 2, a sound absorbing member 10 for a tire according to a first embodiment of the present invention is provided for being disposed in an inner cavity of a tire 2, the tire 2 is combined with a wheel frame 1, and the tire has an outer circumferential surface 2a and an inner circumferential surface 2b, the outer circumferential surface 2a is for contacting with the ground, and the inner circumferential surface 2b faces the tire.
The sound absorbing member 10 is made of porous material and has a first side 10a and a second side 10b, when the sound absorbing member 10 is fixed on the inner circumferential surface 2b of the tire 2, the first side 10a of the sound absorbing member 10 faces the inner circumferential surface 2b of the tire 2, and the second side 10b faces away from the inner circumferential surface 2b of the tire 2. The first side 10a is formed with two ribs 12 and a groove 14, the two ribs 12 are connected to the inner circumferential surface of the tire 2, the groove 14 is located between the two ribs 12, and when the sound absorbing member 10 is installed inside the tire 2, the opening of the groove 14 faces the inner circumferential surface of the tire 2. In this embodiment, the top surface of the rib 12 of the tire sound absorbing member 10 is coated with adhesive to adhere and fix the top surface of the rib 12 of the tire sound absorbing member 10 to the inner circumferential surface 2b of the tire 2. It is preferable that the sound absorbing member 10 is mounted on the inner circumferential surface 2b of the tread portion of the tire 2, as shown in fig. 1.
Referring to fig. 2, a cross-sectional view of the sound absorbing member 10, when viewed from a cross-section of the sound absorbing member 10, the groove 14 has an opening width W1, the sound absorbing member 10 substantially has a maximum width W2, and a ratio of the opening width W1 to the maximum width W2 is between 20% and 60%. Preferably, the ratio is between 20% and 55%. More preferably, the ratio is between 25% and 50%, most preferably, the ratio is between 30% and 50%. In addition, in some embodiments, the ratio may also be designed to be between 30% and 45%, or between 30% and 40%, but not limited thereto.
Further, it is preferable that the tire sound-absorbing member 10 satisfies at least one of the following conditions:
(1) the tire sound absorber 10 has a maximum height H1, and the ratio of the maximum height H1 to the maximum width W2 is between 20% and 40%.
(2) The maximum width of the tire sound absorbing member 10 is between 5cm and 10cm, and the maximum height H1 is between 1cm and 4 cm.
(3) The opening width W1 of the groove 14 of the tire sound absorbing member 10 is between 1.25cm and 4.5 cm.
(4) The groove 14 of the tire sound absorber 10 has a groove depth H2, and the ratio of the groove depth H2 to the maximum height H1 is between 35% and 45%.
(5) The ratio of the groove depth H2 and the opening width W1 of the groove 14 of the tire sound absorbing member 10 is between 30% and 60%.
(6) The density of the tire sound absorbing member 10 is 33kg/m3To 37kg/m3In the meantime.
For example, the present invention provides an embodiment of the sound absorbing member 10 made of foam, such as polyurethane, in this embodiment, the sound absorbing foam of CALMFLEX model F-9M manufactured by INOAC corporation, with a density of about 35kg/M3. The maximum width is 5cm, the maximum height is 2cm, the opening width W1 of the groove 14 is 1.5cm, and the groove depth H2 of the groove 14 is 0.8 cm. The ratio of the opening width W1 to the maximum width W2 is about 30%; the ratio of the maximum height H1 to the maximum width W2 is about 40%; the ratio of the groove depth H2 to the maximum height H1 is about 40%; the ratio of the groove depth H2 to the opening width W1 is about 53.3%.
Referring to fig. 3, fig. 3 shows an XY dispersion chart of decibels of noise and an aperture ratio of 244Hz measured by using a tire sound absorber 10 made of a CALMFLEX type F-9M sound-absorbing cotton, mounting the tire sound absorber 10 on a tire 2, driving the tire 2 to roll on a test road, wherein the aperture ratio is a ratio of an opening width W1 of a groove 14 to a maximum width of the tire sound absorber 10, a maximum height H1 of the tire sound absorber 10 is 2cm, a maximum width W2 of the tire sound absorber 10 is 5cm, and a groove depth H2 of the groove 14 is 0.8 cm. The tire 2 to be tested had a specification of 185/60R15, i.e., a tread width of 185mm, a aspect ratio of a tire section of 60%, a tire thickness of 111mm, and a drum diameter of 15 in.
As can be seen from the table one below and fig. 3, when the sound absorbing member is not installed in the tire, the noise decibel exceeds 48dB, when the sound absorbing member is installed but the opening ratio is zero (i.e., no groove), the noise decibel is about 47.415dB, when the opening ratio is increased to 40%, the noise decibel is reduced to 45.217dB, and when the opening ratio is increased to 60%, the noise decibel is reduced to 45.473 dB. As can be seen from fig. 3, when the opening ratio is between 20% and 60%, the sound absorbing member for a tire has a remarkably excellent noise suppressing effect.
Watch 1
The test site of the test is a vehicle semi-anechoic chamber in a vehicle research test center of a financial corporate legal person, the test space of the vehicle semi-anechoic chamber is 12m (length) × 7m (width) × 4.5m (height), the cut-off frequency is 125Hz, the sound insulation characteristic is 65dB (A) (125Hz), the background noise is 20dB (A), and the air conditioner is lower than NC-30 when being started; the testing machine is a machine of HORIBA company model 1-AXLE CHASSIS DYNO.
It can be seen that, by designing the groove 14 of the sound absorbing member 10 of the present invention, especially by designing the ratio (opening ratio) of the opening width W1 of the groove 14 to the maximum width W2 of the sound absorbing member 10 of the tire to be 20% to 60%, the present invention can absorb the air vibration in the tire cavity, so as to reduce the noise generated by the tire during rolling.
Referring to fig. 4, there is shown a sound absorbing member 20 for a tire according to a second embodiment of the present invention, the sound absorbing member 20 having a structure substantially the same as that of the first embodimentIn addition, the distance between the two side walls 24 of the groove 22 of the tire sound absorbing member 20 is gradually increased from the opening to the bottom of the groove, and the maximum width of the tire sound absorbing member 20 is 8cm, the maximum height thereof is 2.4cm, the opening width W12 of the groove 22 is 2cm, and the groove depth of the groove 22 is 0.8 cm. The tire sound absorbing member 20 has an opening ratio of about 25%; the ratio of the maximum height to the maximum width is about 30%; the ratio of the groove depth to the maximum height is about 33.33%; the ratio of the groove depth to the opening width is about 40%; it has a density of about 33kg/m3。
Referring to fig. 5, a third embodiment of the sound absorbing member 30 for a tire according to the present invention is shown, the sound absorbing member 30 for a tire has a structure substantially the same as that of the first embodiment, except that the distance between the groove walls 34 of the groove 32 of the sound absorbing member 30 for a tire is gradually decreased from the opening to the bottom of the groove, the sound absorbing member 30 for a tire has a maximum width of 10cm and a maximum height of 3.5cm, the opening width W13 of the groove 32 is 4cm, and the groove depth of the groove 32 is 1.5 cm. The tire sound absorbing member 30 has an opening ratio of about 40%; the ratio of the maximum height to the maximum width is about 35%; the ratio of the groove depth to the maximum height is about 42.85%; the ratio of the groove depth to the opening width is about 37.5%; the density of which is about 36kg/m3。
Referring to fig. 6, a sound absorbing member 40 for a tire according to a fourth embodiment of the present invention is provided, in which the sound absorbing member 40 has a substantially same structure as that of the first embodiment, except that a groove wall 44 of a groove 42 of the sound absorbing member 40 has a convex arc shape, the sound absorbing member 40 has a maximum width of 6cm and a maximum height of 1.5cm, an opening width W14 of the groove 42 is 1.25cm, and a groove depth of the groove 42 is 0.6 cm. The tire sound absorbing member 40 has an opening ratio of about 20.8%; the ratio of the maximum height to the maximum width is about 25%; the ratio of the groove depth to the maximum height is about 40%; the ratio of the groove depth to the opening width is about 48%; the density of which is about 34kg/m3。
Referring to fig. 7, a tire sound absorbing member 50 according to a fifth embodiment of the present invention is provided, the tire sound absorbing member 50 has substantially the same structure as that of the fourth embodiment, except that a groove wall 54 of a groove 52 of the tire sound absorbing member 50 is in a concave arc shape, and a maximum width of the tire sound absorbing member 50 is larger than that of the tire sound absorbing member 50The degree is 5cm, the maximum height is 1.5cm, the opening width W15 of the groove 52 is 1cm, and the groove depth of the groove 52 is 0.5 cm. The tire sound absorbing member 50 has an opening ratio of about 20%; the ratio of the maximum height to the maximum width is about 30%; the ratio of the groove depth to the maximum height is about 33%; the ratio of the groove depth to the opening width is about 50%; it has a density of about 35kg/m3。
As shown in fig. 8, a sound absorbing member 60 for a tire according to a sixth embodiment of the present invention has a structure substantially the same as that of the first embodiment, and particularly, the sound absorbing member 60 for a tire has a plurality of grooves 62 arranged at intervals, and the opening widths of the grooves 62 may be designed to be the same or different, and in this embodiment, the opening widths of the grooves 62 are all Wp, and when calculating the opening ratio of the sound absorbing member 60 for a tire, the sum of the opening widths Wp of the grooves 62 is divided by the maximum width of the sound absorbing member 60 for a tire.
Referring to fig. 9, a sound absorbing member 70 for a tire according to a seventh embodiment of the present invention has a structure substantially the same as that of the first embodiment, and particularly, a plurality of grooves 74 are formed on the groove bottom of a groove 72 of the sound absorbing member 70 for a tire. In addition, in one embodiment, it is also possible to design a plurality of rib structures formed on the bottom of the groove 72.
In addition, as shown in fig. 10, in an embodiment, a plurality of tire sound absorbing members 80 may be provided in the tire 4, and the plurality of tire sound absorbing members 80 may be, but not limited to, one of the tire sound absorbing members in the first to seventh embodiments, and particularly, the plurality of tire sound absorbing members 80 are provided at intervals and at equal intervals on the inner circumferential surface of the tire 4, particularly on the inner circumferential surface corresponding to the tread portion of the tire 4.
The above description is only a preferred embodiment of the present invention, and the sound absorbing member for tires provided by the present invention can be applied to tires of various specifications and sizes, and it is intended to be included in the scope of the present invention by taking equivalent changes to the description and claims of the present invention as applicable.
Description of the reference numerals
1 wheel frame
2 tire 2a outer circumferential surface 2b inner circumferential surface
3 fetal lip
4 tyre
[ invention ]
10. 20, 30, 40, 50, 60, 70, 80 sound absorbing member for tyre
10a first side 10b a second side
12 convex ribs 14, 22, 32, 42, 52, 62, 72 grooves
24. 34, 44, 54 groove wall 74 groove
W1, W12, W13, W14, W15, and Wp opening width W2
H1 maximum height H2 groove depth
Claims (9)
1. The utility model provides a sound piece is inhaled to tire for set up in the inside of a tire, its characterized in that:
the tire sound absorbing piece is made of porous materials and provided with a first side and a second side, the first side faces the inner circumferential surface of the tire, and the second side faces away from the inner circumferential surface of the tire; the first side is provided with two convex ribs and a groove, the two convex ribs are connected with the inner circumferential surface of the tire, and the groove is positioned between the two convex ribs;
wherein, from the cross section of tire sound absorbing piece, the opening of recess has an opening width, tire sound absorbing piece has a maximum width, the ratio of opening width to maximum width is between 20% to 60%.
2. The tire sound absorber of claim 1, wherein the tire sound absorber has a maximum height, and a ratio of the maximum height to the maximum width is between 20% and 40%.
3. The tire sound absorber of claim 1, wherein the maximum width is between 5cm and 10 cm; the tire sound absorbing piece has a maximum height, and the maximum height is between 1cm and 4 cm.
4. The sound absorber of claim 1, wherein the opening width is between 1.25cm and 4.5 cm.
5. The tire sound absorber of claim 1, wherein the tire sound absorber has a maximum height, the groove has a groove depth, and the ratio of the groove depth to the maximum height is between 35% and 45%.
6. The sound absorber of claim 1, wherein the groove has a groove depth, and a ratio of the groove depth to the opening width is between 30% and 60%.
7. The tire sound absorber of claim 1, wherein the tire sound absorber has a density of 33kg/m3To 37kg/m3In the meantime.
8. The tire sound absorber of claim 1, wherein the tire sound absorber is selected from polyurethane.
9. The tire noise absorber of claim 1, wherein the plurality of grooves of the tire noise absorber are provided, and a ratio of a sum of opening widths of the grooves to a maximum width of the tire noise absorber is 20% to 60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910958225.0A CN112644231A (en) | 2019-10-10 | 2019-10-10 | Sound piece is inhaled to tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910958225.0A CN112644231A (en) | 2019-10-10 | 2019-10-10 | Sound piece is inhaled to tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112644231A true CN112644231A (en) | 2021-04-13 |
Family
ID=75342568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910958225.0A Pending CN112644231A (en) | 2019-10-10 | 2019-10-10 | Sound piece is inhaled to tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112644231A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4311693A1 (en) * | 2022-07-29 | 2024-01-31 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
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|---|---|---|---|---|
| WO1998025776A1 (en) * | 1996-12-10 | 1998-06-18 | The Yokohama Rubber Co., Ltd. | Pneumatic tire and pneumatic tire set |
| JP2004082947A (en) * | 2002-08-28 | 2004-03-18 | Tokai Rubber Ind Ltd | Soundproof tire |
| CN1954996A (en) * | 2005-10-24 | 2007-05-02 | 住友橡胶工业株式会社 | Method for manufacturing low noise pneumatic tire |
| DE102011053686A1 (en) * | 2011-09-16 | 2013-03-21 | Continental Reifen Deutschland Gmbh | Radial type tubeless pneumatic tire for vehicle i.e. passenger car, has vibration damper arranged within circumference of tire on radial inner side of air-permeable inner layer, for damping vibrations along circumference |
| CN104999864A (en) * | 2014-04-25 | 2015-10-28 | 锦湖轮胎株式会社 | Cavity noise reduction tire |
| WO2017001997A1 (en) * | 2015-06-30 | 2017-01-05 | Pirelli Tyre S.P.A. | Tyre for vehicle wheels |
| WO2017028963A1 (en) * | 2015-08-18 | 2017-02-23 | Continental Reifen Deutschland Gmbh | Pneumatic vehicle tyres |
| DE102015115774A1 (en) * | 2015-09-18 | 2017-04-06 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Pneumatic tire for a motor vehicle |
| CN106864177A (en) * | 2017-02-24 | 2017-06-20 | 建大橡胶（中国）有限公司 | A kind of Recreational Vehicle asymmetric rib tire |
| KR101856095B1 (en) * | 2016-12-06 | 2018-05-10 | 박성연 | tire |
| CN110039963A (en) * | 2019-04-16 | 2019-07-23 | 安徽佳通乘用子午线轮胎有限公司 | A kind of low noise pneumatic tire |
| CN209365786U (en) * | 2018-07-20 | 2019-09-10 | 正新橡胶工业股份有限公司 | Tire noise reduction device |
-
2019
- 2019-10-10 CN CN201910958225.0A patent/CN112644231A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998025776A1 (en) * | 1996-12-10 | 1998-06-18 | The Yokohama Rubber Co., Ltd. | Pneumatic tire and pneumatic tire set |
| JP2004082947A (en) * | 2002-08-28 | 2004-03-18 | Tokai Rubber Ind Ltd | Soundproof tire |
| CN1954996A (en) * | 2005-10-24 | 2007-05-02 | 住友橡胶工业株式会社 | Method for manufacturing low noise pneumatic tire |
| DE102011053686A1 (en) * | 2011-09-16 | 2013-03-21 | Continental Reifen Deutschland Gmbh | Radial type tubeless pneumatic tire for vehicle i.e. passenger car, has vibration damper arranged within circumference of tire on radial inner side of air-permeable inner layer, for damping vibrations along circumference |
| CN104999864A (en) * | 2014-04-25 | 2015-10-28 | 锦湖轮胎株式会社 | Cavity noise reduction tire |
| WO2017001997A1 (en) * | 2015-06-30 | 2017-01-05 | Pirelli Tyre S.P.A. | Tyre for vehicle wheels |
| WO2017028963A1 (en) * | 2015-08-18 | 2017-02-23 | Continental Reifen Deutschland Gmbh | Pneumatic vehicle tyres |
| DE102015115774A1 (en) * | 2015-09-18 | 2017-04-06 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Pneumatic tire for a motor vehicle |
| KR101856095B1 (en) * | 2016-12-06 | 2018-05-10 | 박성연 | tire |
| CN106864177A (en) * | 2017-02-24 | 2017-06-20 | 建大橡胶（中国）有限公司 | A kind of Recreational Vehicle asymmetric rib tire |
| CN209365786U (en) * | 2018-07-20 | 2019-09-10 | 正新橡胶工业股份有限公司 | Tire noise reduction device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4311693A1 (en) * | 2022-07-29 | 2024-01-31 | Sumitomo Rubber Industries, Ltd. | Pneumatic tire |
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Application publication date: 20210413 |