CN1829613A - Low noise pneumatic tire - Google Patents
Low noise pneumatic tire Download PDFInfo
- Publication number
- CN1829613A CN1829613A CN 200480021975 CN200480021975A CN1829613A CN 1829613 A CN1829613 A CN 1829613A CN 200480021975 CN200480021975 CN 200480021975 CN 200480021975 A CN200480021975 A CN 200480021975A CN 1829613 A CN1829613 A CN 1829613A
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- Prior art keywords
- sound absorption
- materials
- low noise
- fixing band
- pneumatic tire
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- 239000000463 material Substances 0.000 claims description 125
- 238000010521 absorption reaction Methods 0.000 claims description 97
- 230000033228 biological regulation Effects 0.000 claims description 6
- 238000003475 lamination Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 17
- 239000011358 absorbing material Substances 0.000 abstract 2
- 239000011148 porous material Substances 0.000 abstract 1
- 210000003754 fetus Anatomy 0.000 description 17
- 238000010586 diagram Methods 0.000 description 13
- 230000002093 peripheral effect Effects 0.000 description 8
- 238000005452 bending Methods 0.000 description 6
- 239000004925 Acrylic resin Substances 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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- Tires In General (AREA)
Abstract
This invention provides a low noise pneumatic tire allowed to achieve an efficient noise reduction effect by making full use of characteristics of a sound absorbing material. A pneumatic tire according to the present invention is a low noise pneumatic tire where a band-shaped sound absorbing material formed of a porous material whose apparent density defined in JIS K6400 is in a range of 10 to 70 kg/m<SUP>3</SUP>, is attached on the inner surface of a tread by use of an elastic fixing band.
Description
Technical field
The present invention relates to a kind of low noise pneumatic tire, more particularly, relate to a kind of low noise pneumatic tire that can effectively reduce the noise that causes by cavity resonance.
Background technology
Produce one of tire noise reason and be the cavity resonance sound that the vibration by the air that is filled in inside tires causes.This cavity resonance sound is to produce like this, and promptly when tyre load was rotated, the fetus face that contacts with ground vibrated owing to ground-surface is concavo-convex, and this vibration makes the air vibration of inside tires.In this cavity resonance sound, the frequency that can be heard sound as noise changes according to tire size, but probably is about 200～250Hz known to general.Therefore, the noise level that reduces this frequency field is extremely important to reducing tire noise.
Method as reducing such noise that is produced by the cavity resonance phenomenon has motion to add sound absorption materials and absorb sonorant (for example, with reference to patent documentation 1) in inside tires.But, owing to the characteristic of sound absorption materials is not fully studied, so not talkatively necessarily can effectively reduce noise.
Patent documentation 1: Japanese kokai publication sho 62-216803 communique
Summary of the invention
The objective of the invention is for a kind of low noise pneumatic tire is provided, it obtains efficient erasure effect by the characteristic of effectively utilizing sound absorption materials.
Low noise pneumatic tire of the present invention has the structure of following (1)～(11) in order to achieve the above object.
(1) a kind of low noise pneumatic tire wherein, will be 10～70kg/m by apparent density
3The banded sound absorption materials made of aerated materials be installed on the tyre surface inside face by elastic reducing-fixing band, this is apparent close by Nippon Standard JIS K6400 defined.
(2) according to above-mentioned (1) described low noise pneumatic tire, wherein, banded sound absorption materials is installed on the whole circumference of tyre surface inside face by elastic reducing-fixing band.
(3) according to above-mentioned (1) or (2) described low noise pneumatic tire, wherein, forming the ladder difference at the inside face of above-mentioned banded sound absorption materials is 20mm or following male and fomale(M﹠F).
(4) according to above-mentioned (1), (2) or (3) described low noise pneumatic tire, wherein, at cavity side surface laminated the 2nd aerated materials of above-mentioned banded sound absorption materials, the sound absorption coefficient to the sound of frequency 200Hz of the JIS A1405 of Japanese Industrial Standards of the 2nd aerated materials regulation be 10% or more than.
(5) according to above-mentioned (4) described low noise pneumatic tire, wherein, the thickness of above-mentioned banded sound absorption materials is 5～45mm, above-mentioned the 2nd aerated materials have an even surface and thickness is 5～45mm.
(6), wherein, form the ladder difference on the surface of above-mentioned the 2nd aerated materials and be 20mm or following concavo-convex according to above-mentioned (4) described low noise pneumatic tire.
(7) according to above-mentioned (6) described low noise pneumatic tire, wherein, the thickness of above-mentioned banded sound absorption materials is 5～45mm, and the thickness of above-mentioned the 2nd aerated materials is 5～45mm.
(8) according to above-mentioned (1), (2) or (3) described low noise pneumatic tire, wherein, at the inside and outside two sides of above-mentioned banded sound absorption materials lamination aerated materials, the sound absorption coefficient to the sound of frequency 200Hz of the JIS A1405 of Japanese Industrial Standards of this aerated materials regulation be 10% or more than.
According to each described low noise pneumatic tire in above-mentioned (1)～(8), it is characterized in that (9) elastic reducing-fixing band is the parts that at least 1 position on the circumference of this elastic reducing-fixing band has the telescoping mechanism of automatically regulating girth.
(10) according to above-mentioned (9) described low noise pneumatic tire, wherein, above-mentioned telescoping mechanism is made of elastomeric spring device.
(11) according to above-mentioned (9) described low noise pneumatic tire, wherein, above-mentioned telescoping mechanism makes the both ends of above-mentioned elastic reducing-fixing band link fixing slidably mutually.
According to low noise pneumatic tire of the present invention, owing to constitute banded sound absorption materials by aerated materials, suitably set the apparent density of defined among the JIS K6400 of Japanese Industrial Standards of this aerated materials, by elastic reducing-fixing band it is installed on the whole circumference of inside face of fetus face, so can obtain following effect, promptly, can realize the reduction of cavity resonance sound by the sound absorption on the whole circumference that produces by aerated materials.
Description of drawings
Fig. 1 is that expression is to low noise pneumatic tire assembling wheel rim that is made of embodiments of the present invention and the radial section-drawing of filling the state of air pressure;
Fig. 2 (a) is the lateral plan that is used to illustrate the configuration relation of the banded sound absorption materials that is made of embodiments of the present invention and elastic reducing-fixing band;
Fig. 2 (b) is the lateral plan that is used to illustrate the configuration relation of the banded sound absorption materials that is made of embodiments of the present invention and elastic reducing-fixing band;
Fig. 3 (a) is the block diagram of surface configuration that is used to illustrate the inner peripheral surface of the banded sound absorption materials that is made of embodiments of the present invention;
Fig. 3 (b) is the block diagram of surface configuration that is used to illustrate the inner peripheral surface of the banded sound absorption materials that is made of embodiments of the present invention;
Fig. 3 (c) is the block diagram of surface configuration that is used to illustrate the inner peripheral surface of the banded sound absorption materials that is made of embodiments of the present invention;
Fig. 3 (d) is the block diagram of surface configuration that is used to illustrate the inner peripheral surface of the banded sound absorption materials that is made of embodiments of the present invention;
Fig. 3 (e) is the block diagram of surface configuration that is used to illustrate the inner peripheral surface of the banded sound absorption materials that is made of embodiments of the present invention;
Fig. 4 (a) is the lateral plan that is used to illustrate the laminar structure of the banded sound absorption materials that is made of embodiments of the present invention;
Fig. 4 (b) is the lateral plan that is used to illustrate the laminar structure of the banded sound absorption materials that is made of embodiments of the present invention;
Fig. 5 (a) is the lateral plan that is used to illustrate the laminar structure of the banded sound absorption materials that is made of other embodiments of the present invention;
Fig. 5 (b) is the lateral plan that is used to illustrate the laminar structure of the banded sound absorption materials that is made of other embodiments of the present invention;
Fig. 6 (a) is the block diagram that is used to illustrate the configuration of the elastic reducing-fixing band that is made of embodiments of the present invention;
Fig. 6 (b) is the block diagram that is used to illustrate the configuration of the elastic reducing-fixing band that is made of embodiments of the present invention;
Fig. 6 (c) is the block diagram that is used to illustrate the configuration of the elastic reducing-fixing band that is made of embodiments of the present invention;
Fig. 7 is the lateral plan of an embodiment example that the low noise pneumatic tire of the present invention of elastic reducing-fixing band has been used in expression, and described elastic reducing-fixing band is provided with the telescoping mechanism of the girth of automatically regulating elastic reducing-fixing band at least on 1 position on the circumference of elastic reducing-fixing band;
Fig. 8 is the radial section-drawing that the state of air pressure is filled in expression, and it is used to illustrate the main portion of embodiment example shown in Figure 7;
Fig. 9 (a) is illustrated in the mode example of the present invention shown in Figure 7 the skeleton diagram of other mode examples of the telescoping mechanism that uses in elastic reducing-fixing band;
Fig. 9 (b) is illustrated in the mode example of the present invention shown in Figure 7 the skeleton diagram of other mode examples of the telescoping mechanism that uses in elastic reducing-fixing band;
Figure 10 is illustrated in the mode example of the present invention shown in Figure 7 the skeleton diagram of another other mode examples of the telescoping mechanism that uses in elastic reducing-fixing band;
Figure 11 is the instruction diagram of press-bending (bucking) phenomenon that is used to illustrate tire.
Label declaration
1: fetus face
2: tyre bead
3: sidewall portion
4: cavity portion
5: banded sound absorption materials
6: elastic reducing-fixing band
7 (a), 7 (b), 7 (c): leaf spring
7: connect jig
G: road surface
Q: grounding parts
The specific embodiment
Below, with reference to accompanying drawing structure of the present invention is elaborated.Identical inscape in each figure is marked with identical label, and omits repeat specification.
Fig. 1 is the radial section-drawing of an example of expression low noise pneumatic tire of the present invention, and Fig. 2 (a) and Fig. 2 (b) are the lateral plans of two different modes of main portion that is used for the tire of instruction diagram 1.
In Fig. 1, air-inflation tyre T comprises: fetus face 1, pair of right and left tyre bead 2, with the interconnective sidewall of these fetus faces 1 and tyre bead 2 portion 3.And, when being installed in tire T on the wheel rim R, form cavity portion 4 between tire T and the wheel rim R.
As Fig. 2 (a) with (b), on the inside face of fetus face 1, on the whole circumference of the inside face of fetus face, banded sound absorption materials 5 to be installed by elastic reducing-fixing band 6 and the mode of utilizing its elastic force to be crimped on the inner surface side of fetus face 1.Banded sound absorption materials 5 is 10～70kg/m by the apparent density of Nippon Standard JISK6400 regulation
3Aerated materials constitute, elastic reducing-fixing band 6 is made of the synthetic resin with high tensile elasticity rate.In addition, the both ends of the length direction of elastic reducing-fixing band 6 interconnect in the mode that its girth can change.
At this Fig. 2 (a) with (b), represented that banded sound absorption materials 5 is installed in the example on the whole circumference of inside face of fetus face by elastic reducing-fixing band 6, but in the present invention, needn't on whole circumference, all have banded sound absorption materials.Various discoveries according to inventors of the present invention, as long as about 75% or the banded sound absorption materials of above installation at the whole girth of the inside face of fetus face, more preferably this whole girth about 80% or more than, most preferably at 90% or the banded sound absorption materials of above installation of this whole girth.According to inventors' of the present invention discovery, it is the highest, best that banded sound absorption materials effect is installed on the whole girth of the inside face of fetus face.
In Fig. 1, having represented for example that banded sound absorption materials 5 is mounted to from the inner peripheral surface side is crimped on situation on the inside face of fetus face 1 by elastic reducing-fixing band 6, but the tire of elastic reducing-fixing band 6 and banded sound absorption materials 5 position relation radially also can be the outer circumference surface side that elastic reducing-fixing band 6 is configured in banded sound absorption materials 5.No matter in which mode, as long as elastic reducing-fixing band 6 is by fixing banded sound absorption materialss 5 such as adhesivess, the both ends of its length direction are interconnected, and the inside face that makes banded sound absorption materials 5 be crimped on fetus face 1 gets final product.
Like this, owing to be made as 70kg/m by apparent density with Nippon Standard JIS K6400 regulation
3Or below, banded sound absorption materials 5 has open texture, simultaneously can also be with can not be owing to the mode that compressive deformation takes place in the inner pressure of tire effect is kept its structure, so can obtain sound-absorbing effect preferably.But, when apparent density less than 10kg/m
3The time, open texture will be excessive, just can not obtain sound absorption qualities.
Like this, because the density of banded sound absorption materials 5 is set within the limits prescribed,, can therefore can not obtain the good sound absorption effect simultaneously because of the effect compressive deformation of inner pressure of tire so banded sound absorption materials 5 has open texture.In addition, as mentioned above, banded sound absorption materials 5 utilizes the elastic force of elastic reducing-fixing band 6 and is crimped on the circumference of tire inner surface, more preferably on the whole circumference of tire inner surface or be preferably tire inner surface whole girth about 75% or more than, can not come off so can keep stable status simply.
Constitute the aerated materials of banded sound absorption materials 5, be preferably resinous foams, particularly because low-density polyurethane foam has the resistance that is difficult to take place because of the inner pressure of tire effect compressive deformation, therefore preferred.The form of bubble is preferably continuous air bubbles.In addition, aerated materials be except being the resin foam, can also be the nonwoven fabrics of the felt that combines fiber, mat etc.
In addition, as the material that constitutes elastic reducing-fixing band 6, can preferably use the synthetic resin of acrylic resin etc.When using acrylic resin, can preferably use the acrylic resin of crooked elastic rate in the scope of 1100～1800MPa of this acrylic resin.Crooked elastic rate is during less than 1100MPa, and then elasticity becomes too little, thereby elastic reducing-fixing band 6 is difficult to the effects of performance as elastic webbing.When crooked elastic rate surpassed 1800MPa, then rigidity became too high, and the distortion when elastic reducing-fixing band 6 can't be with tire ground connection is out of shape, so become than cracky, durability reduces.More preferably crooked elastic rate is in the scope of 1300～1700MPa.In addition, said herein crooked elastic rate is that (AMERICAN SOCIETY FOR TESTING AND MATERIAL: American Society for Testing and Materials) test method of the crooked elastic rate of D790 defined is tried to achieve by ASTM.
Moreover, in the embodiment of Fig. 2 (a), represented that banded sound absorption materials 5 is mounted to the situation that is crimped on the inside face of fetus face 1 from the inner peripheral surface side by elastic reducing-fixing band 6, but the tire of elastic reducing-fixing band 6 and banded sound absorption materials 5 position relation radially, also can shown in Fig. 2 (b), elastic reducing-fixing band 6 be configured in the outer circumference surface side of banded sound absorption materials 5.No matter in which mode, as long as elastic reducing-fixing band 6 is by fixing banded sound absorption materialss 5 such as adhesivess, the both ends of its length direction are interconnected, and banded sound absorption materials 5 is crimped on the inside face of fetus face 1 get final product.
In addition, on the inner peripheral surface of banded sound absorption materials 5, can form concavo-convex for improving sound-absorbing effect.Though there is no particular limitation for the mode of male and fomale(M﹠F), can be illustrative mode among Fig. 3 (a)～(e).The concavo-convex ladder difference of this male and fomale(M﹠F) can be set in 20mm or following.
In the present invention, more preferably, can be at the surface of cavity 4 sides of banded sound absorption materials 5, the 2nd aerated materials that the lamination acoustical absorbance properties is different.In this wise on the top layer during other aerated materials of lamination, can be as Fig. 4 (a) with (b), at the aerated materials of tire inner surface lamination resistance against compression excellence, because its apparent density is 10～70kg/m
3So can be under the air pressure effect in the cavity portion 4 and damaged by pressure, be 10% or the 2nd above aerated materials 5a at the sound absorption coefficient to the sound of frequency 200Hz of the surface laminated JIS A1405 of cavity 4 sides defined.In this case, also can form on the surface of the 2nd aerated materials 5a concavo-convex.As aerated materials 5a, can be resinous foams, also can be fibrous nonwoven fabrics etc.
Moreover said sound absorption coefficient among the present invention is the sound absorption coefficient that defines among the JIS A1405.
As mentioned above, under the situation of the layered product of making banded sound absorption materials 5 and the 2nd aerated materials 5a, the thickness A of banded sound absorption materials 5 can be made as 5～45mm, thickness B with the 2nd aerated materials 5a, when shown in Fig. 4 (a), having an even surface like that, preferably be made as 5～45mm, 5～10mm more preferably is when preferably be made as 5～45mm, more preferably 5～20mm like that during concave-convex surface shown in Fig. 4 (b).Thus, can prevent to lose sound-absorbing effect, can improve sound absorption qualities simultaneously owing to banded sound absorption materials 5 is damaged by pressure.In addition, the thickness of the layered product of this band shape sound absorption materials 5 and the 2nd aerated materials 5a be made as 50mm or with interior for well.
As mentioned above, when surface laminated the 2nd aerated materials 5a,, can shown in Fig. 5 (a), on the 2nd aerated materials 5a, form a plurality of hole S of the banded sound absorption materials 5 that passes the resistance against compression excellence in order further to improve sound-absorbing effect at banded sound absorption materials 5.Thus, hole S can realize as will sucking the effect of the passage of banded sound absorption materials 5 from the acoustic energy of tire cavity portion 4, can prevent the destruction of the banded sound absorption materials 5 that caused by tire pressure simultaneously.
And then, shown in Fig. 5 (b), also can constitute the structure that on the inside and outside two sides of the banded sound absorption materials 5 of resistance against compression excellence, covers with aerated materials 5a.Thus, because the 2nd aerated materials 5a is disposed in contact on as the tire medial surface in the generation source of cavity resonance, so compare with the situation that the 2nd aerated materials 5a only is configured in medial surface, sound-absorbing effect increases to some extent.
Moreover, the elastic reducing-fixing band 6 when surface laminated the 2nd aerated materials 5a of banded sound absorption materials 5 and the tire of banded sound absorption materials 5 position relation radially, except as Fig. 6 (a) with (c), elastic reducing-fixing band 6 is configured in outside the inner circumferential side or outer circumferential sides of banded sound absorption materials 5, can also shown in Fig. 6 (b), be configured between banded sound absorption materials 5 and the 2nd aerated materials 5a.
Because banded sound absorption materials 5 of the present invention and elastic reducing-fixing band 6, be installed in through the parts on the tire T after the vulcanization process after being, so do not need to change the production facilities etc. of tyre and rim, can be used on the existing tire.
Moreover, particularly variable by the girth that makes elastic reducing-fixing band 6, and regulate the girth of banded sound absorption materials 5, just can use identical banded sound absorption materials 5 and elastic reducing-fixing band 6 for the air-inflation tyre of a plurality of kinds.And then, because on the whole circumference of the inside face of the fetus face 1 that above-mentioned banded sound absorption materials 5 and elastic reducing-fixing band 6 can be installed in tire T, so the operability also can not hinder the assembling wheel rim time.
Especially, as mentioned above, in order to change the girth of elastic reducing-fixing band 6, and the girth of the banded sound absorption materials 5 of scalable, can use at least 1 position on the circumference of elastic reducing-fixing band to be provided with the elastic reducing-fixing band of the telescoping mechanism of automatically regulating girth.
If the mode example of this elastic reducing-fixing band of expression in Fig. 7, then elastic reducing-fixing band 6, it is preferably and is made of metal, as shown in Figure 7, at least 1 position (being 4 positions among the figure) is gone up girth and is cut open an otch on circumference, and with the leaf spring 7a connection that bends to the U font of this notch space, thereby the integral body of formation elastic reducing-fixing band 6.The part of the leaf spring 7a of this U font forms to such an extent that work as the telescoping mechanism of the circumferencial direction component that automatically absorbs the power on the elastic reducing-fixing band 6 that is carried in.Fig. 8 be the low noise pneumatic tire that constitutes by embodiment shown in Figure 7 of expression filling the radial section-drawing of state of air pressure, in this Fig. 7 and mode shown in Figure 8, shown in Fig. 2 (b), elastic reducing-fixing band 6 is configured in the outer circumferential sides of banded sound absorption materials 5.
As such telescoping mechanism of making by leaf spring 7a, so long as Fig. 9 (a) be bent into jagged leaf spring 7b, 7c (b) and get final product.Moreover there is no particular limitation though be formed on the quantity of the telescoping mechanism on the circumference of elastic reducing-fixing band 6, preferably is configured in 3～8 positions on the circumference equably.
As the width of elastic reducing-fixing band 6, be preferably the scope of 10～30mm, can suitably decision in this scope according to the rigidity of banded sound absorption materials 5.The width of elastic reducing-fixing band 6 is during less than 10mm, the undercapacity of elastic reducing-fixing band.The width of elastic reducing-fixing band is during greater than 30mm, because weight increases, so not preferred.The thickness of elastic reducing-fixing band preferably is made as 0.5～2.0mm.The thickness of elastic reducing-fixing band is during less than 0.5mm, the undercapacity of elastic reducing-fixing band.When the thickness of elastic reducing-fixing band surpassed 2.0mm, it is too high and easy to be damaged that bending stiffness becomes, so not preferred.More preferably the thickness of elastic reducing-fixing band is 0.75～1.5mm.
As mentioned above, on elastic reducing-fixing band 6, set the tire of telescoping mechanism 7a, 7b, 7c, even effect produces the such external force such as (bucking) of bending on elastic reducing-fixing band 6 in motion, telescoping mechanism also can absorb this external force automatically, so can prolong the life-span of elastic reducing-fixing band 6, and can stably banded sound absorption materials 5 be installed to the tyre surface inside face.
Figure 10 represents another other embodiments of telescoping mechanism.Both ends 6b, the 6c of the length direction of elastic reducing-fixing band 6 interconnects slidably by connecting jig 7.That is, for connecting jig 7, a 6b of square end portion of elastic reducing-fixing band 6 fixes, and the opposing party end 6c can be free to slide along the direction of arrow.On the sliding surface of the end of elastic reducing-fixing band 6 6c and/or connection jig 7, slide smoothly in order to make, can cover fluorocarbon resin or coating lubricant.
Because by constituting in this wise, for the external force that will produce press-bending etc., elastic reducing-fixing band 6 is flexible automatically and absorb this power, thus can prolong the fatigue life of elastic reducing-fixing band 6, and can stably banded sound absorption materials 5 be installed to the tyre surface inside face.And by the way, situation shown in Figure 11 is to be fixed to fixed length owing to be assembled in the girth of the elastic reducing-fixing band 6 on the tire, so produce the situation of bending on the grounding parts Q of tire contact road surface G; Owing to becoming the maintenance of banded sound absorption materials 5 to shorten fatigue life of unstable or elastic reducing-fixing band 6 these problems, this press-bending just had in the past, but it is as above of the present invention such, be formed in the tire of the telescoping mechanism of the girth that this elastic reducing-fixing band of automatically regulating is set on the elastic reducing-fixing band, just can reduce such problem.
Moreover, in the above-described embodiment, illustration elastic reducing-fixing band 6 make this band shape sound absorption materials 5 be crimped on situation on the fetus face inside face from the outer circumferential sides of banded sound absorption materials 5, but the tire of elastic reducing-fixing band 6 and banded sound absorption materials 5 position relation radially, be not limited thereto, elastic reducing-fixing band 6 also can make this band shape sound absorption materials 5 be crimped on the tyre surface inside face from the inner circumferential side of banded sound absorption materials 5.In addition, the joint unit of banded sound absorption materials 5 and elastic reducing-fixing band 6 can be not specially limited according to the kind or the form decision of banded sound absorption materials 5, can adopt joint that is undertaken by adhesives or the joint that is undertaken by other linkage units.
Embodiment
In tire size is in the air-inflation tyre of 205/65R15, make the tire in the past (example in the past) that cavity portion does not install whatever respectively, with cavity portion, will be as shown in table 1 the different sound absorption materials of apparent density stipulated of JIS K6400 shown in Fig. 2 (a), be installed in tire of the present invention (embodiment) and comparative example (comparative example 1,2) on the whole circumference of tyre surface inside face like that.In addition, all are all the same, and the width of sound absorption materials is 150mm, and thickness is 40mm.
These tire sets are contained on the wheel of rim size 15 * 61/2JJ, the air that charges into 220KPa is pressed and is installed on the car that free air capacity is 2500cc, on the position that driver's seat vehicle window in the compartment is picked up the ears piece microphone is set, is determined on the uneven road surface noise in the car of the frequency 200～250Hz when travelling with the speed of 50km/h.With its results averaged, and by will be in the past tire be 100 as index, be logged in table 1 in the lump and dash.The more little expression noise of numerical value is few more.
Table 1
| Routine in the past | Embodiment | Comparative example 1 | Comparative example 2 | |
| Apparent density (kg/m 3) | - | 30 | 5 | 80 |
| Frequency is the interior noise of the car of 200～250Hz | 100 | 92 | 100 | 99 |
As shown in Table 1, tire of the present invention is compared with tire in the past, and frequency is that the cavity resonance sound of 200～250Hz decreases.
Low noise pneumatic tire of the present invention can be used in the tire manufacture, and then, can in auto manufacturing, be effective to realize installing the automobile of low noise pneumatic tire.
Claims (11)
1. a low noise pneumatic tire wherein, will be 10～70kg/m by apparent density
3The banded sound absorption materials made of aerated materials be installed in by elastic reducing-fixing band on the whole circumference of tyre surface inside face, this is apparent close by Nippon Standard JIS K6400 defined.
2. low noise pneumatic tire according to claim 1, wherein, banded sound absorption materials is installed on the whole circumference of tyre surface inside face by elastic reducing-fixing band.
3. low noise pneumatic tire according to claim 1 and 2, wherein, forming the ladder difference at the inside face of above-mentioned banded sound absorption materials is 20mm or following male and fomale(M﹠F).
4. according to claim 1,2 or 3 described low noise pneumatic tires, wherein, at cavity side surface laminated the 2nd aerated materials of above-mentioned banded sound absorption materials, the sound absorption coefficient to the sound of frequency 200Hz of the JIS A1405 of Japanese Industrial Standards of the 2nd aerated materials regulation be 10% or more than.
5. low noise pneumatic tire according to claim 4, wherein, the thickness of above-mentioned banded sound absorption materials is 5～45mm, above-mentioned the 2nd aerated materials have an even surface and thickness is 5～45mm.
6. low noise pneumatic tire according to claim 4 wherein, forms the ladder difference and is 20mm or following concavo-convex on the surface of above-mentioned the 2nd aerated materials.
7. low noise pneumatic tire according to claim 6, wherein, the thickness of above-mentioned banded sound absorption materials is 5～45mm, the thickness of above-mentioned the 2nd aerated materials is 5～45mm.
8. according to claim 1,2 or 3 described low noise pneumatic tires, wherein, at the inside and outside two sides of above-mentioned banded sound absorption materials lamination aerated materials, the sound absorption coefficient to the sound of frequency 200Hz of the JISA1405 of Japanese Industrial Standards of this aerated materials regulation be 10% or more than.
9. according to each described low noise pneumatic tire in the claim 1～8, it is characterized in that elastic reducing-fixing band is the parts that at least 1 position on the circumference of this elastic reducing-fixing band has the telescoping mechanism of automatically regulating girth.
10. low noise pneumatic tire according to claim 9, wherein, above-mentioned telescoping mechanism is made of elastomeric spring device.
11. low noise pneumatic tire according to claim 9, wherein, above-mentioned telescoping mechanism makes the both ends of above-mentioned elastic reducing-fixing band link fixing slidably mutually.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003285815 | 2003-08-04 | ||
| JP285815/2003 | 2003-08-04 | ||
| JP285829/2003 | 2003-08-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1829613A true CN1829613A (en) | 2006-09-06 |
| CN100446997C CN100446997C (en) | 2008-12-31 |
Family
ID=36947507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800219757A Active CN100446997C (en) | 2003-08-04 | 2004-08-03 | Low noise pneumatic tire |
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| CN (1) | CN100446997C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101516644B (en) * | 2006-09-26 | 2010-11-17 | 横滨橡胶株式会社 | Tire noise reduction device and pneumatic tire |
| CN103158438A (en) * | 2011-12-14 | 2013-06-19 | 韩国轮胎株式会社 | Low noise tire |
| CN106457900A (en) * | 2014-08-22 | 2017-02-22 | 横滨橡胶株式会社 | Noise reduction apparatus and pneumatic tire provided with same |
| CN106457901A (en) * | 2014-06-24 | 2017-02-22 | 横滨橡胶株式会社 | Tyre noise reduction device and pneumatic tyre |
| CN110857014A (en) * | 2018-08-22 | 2020-03-03 | 通伊欧轮胎株式会社 | Pneumatic tire |
| 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 |
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| US20120325383A1 (en) * | 2011-06-24 | 2012-12-27 | Gm Global Technolofgy Operations Llc | Acoustical core for absorbing noise within a tire interior cavity |
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| DE2946273A1 (en) * | 1979-11-16 | 1981-05-21 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | METHOD FOR REDUCING TIRE NOISE |
| US4913209A (en) * | 1985-01-22 | 1990-04-03 | The Uniroyal Goodrich Tire Company | Sealant product, laminate thereof, and pneumatic tire constructed therewith |
| DE4325470A1 (en) * | 1993-07-29 | 1995-02-02 | Egon Turba | Low-noise vehicle wheel |
| JP3384633B2 (en) * | 1994-11-11 | 2003-03-10 | 住友ゴム工業株式会社 | Tire assembly |
| JP3808635B2 (en) * | 1998-08-20 | 2006-08-16 | 住友ゴム工業株式会社 | Road noise suppression device |
| US6533009B2 (en) * | 2000-06-05 | 2003-03-18 | Sumitomo Rubber Industries, Ltd. | Noise damper for pneumatic tire |
| JP4367598B2 (en) * | 2000-12-11 | 2009-11-18 | 横浜ゴム株式会社 | Tire / wheel assembly |
| DE60209053T2 (en) * | 2001-04-16 | 2006-09-28 | Sumitomo Rubber Industries Ltd., Kobe | Tire noise reducing device |
| JP2004524215A (en) * | 2001-04-19 | 2004-08-12 | ソシエテ ドゥ テクノロジー ミシュラン | Apparatus for attenuating tire / wheel cavity noise |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101516644B (en) * | 2006-09-26 | 2010-11-17 | 横滨橡胶株式会社 | Tire noise reduction device and pneumatic tire |
| CN103158438A (en) * | 2011-12-14 | 2013-06-19 | 韩国轮胎株式会社 | Low noise tire |
| CN103158438B (en) * | 2011-12-14 | 2016-05-04 | 韩国轮胎株式会社 | Low noise tire |
| CN106457901A (en) * | 2014-06-24 | 2017-02-22 | 横滨橡胶株式会社 | Tyre noise reduction device and pneumatic tyre |
| CN106457901B (en) * | 2014-06-24 | 2018-07-06 | 横滨橡胶株式会社 | Tire noise reducing device and pneumatic tire |
| CN106457900A (en) * | 2014-08-22 | 2017-02-22 | 横滨橡胶株式会社 | Noise reduction apparatus and pneumatic tire provided with same |
| CN106457900B (en) * | 2014-08-22 | 2018-06-29 | 横滨橡胶株式会社 | Noise reducing device and the pneumatic tire for having the noise reducing device |
| CN110857014A (en) * | 2018-08-22 | 2020-03-03 | 通伊欧轮胎株式会社 | Pneumatic tire |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN100446997C (en) | 2008-12-31 |
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