摘要:
Provided are: a noise reduction device with an improved adhesion of a noise absorbing member formed of a porous material and with a reduced processing time; a method of manufacturing the noise reduction device; and a pneumatic tire including the noise reduction device. The noise reduction device of the present invention includes: a noise absorbing member formed of a porous material; a band member for attaching the noise absorbing member to the inner surface of a tire; and locking members formed of a thermoplastic resin. The band member is formed of a thermoplastic resin. The noise absorbing member is disposed between the band member and the locking members. The locking members are bonded to the band member through the noise absorbing member by thermal fusion.
摘要:
Provided is a pneumatic tire manufacturing method capable of improving the productivity of pneumatic tires each having surface fasteners in its tire inner surface, and of avoiding manufacturing a pneumatic tire having a deteriorated uniformity, as well as of preventing engagement elements of each surface fastener from being crushed. Also, provided is a pneumatic tire manufactured by the pneumatic tire manufacturing method. The pneumatic tire manufacturing method according to the present invention includes the steps of, in making a green tire having two-side fasteners in its tire inner surface in its tire circumferential direction, each two-side fastener including an engagement element group on both sides: covering the engagement element groups on first sides of the two-side fasteners with a protective rubber layer made of an uncured rubber; making a cylindrical first formed body on a making drum, with the two-side fasteners covered with the protective rubber layer being intermittently attached to an inner circumferential surface of the first forming body in a circumferential direction thereof with the engagement element groups on second sides of the two-side fasteners being interposed in between; bonding the first formed body to an inner circumference of an annular second formed body by compression through expanding the first formed body into a toroidal shape, and thereby making the green tire; and curing the green tire inside a mold of a curing machine while pressing the green tire from its inside by a bladder.
摘要:
Provided is a tire wheel assembly making it possible to effectively reduce cavity resonance noise without causing either negative influence on deformation of a tire or deterioration in rim assembling workability. A tire wheel assembly of the present invention includes a pneumatic tire, and a wheel provided with a rim fitted with the pneumatic tire, and forms a cavity portion between the pneumatic tire and the rim. The tire wheel assembly comprises at least one tube, which has one end thereof closed while having a length of 55% to 110% of a reference length L0 corresponding to one fourth of a cavity resonance wavelength, is provided so as to open to the cavity portion.
摘要:
A pneumatic tire whose lateral rigidity is efficiently increased and that enables further improvement of driving stability. The pneumatic tire has bead fillers on the outer peripheral side of bead cores. Sheet-like auxiliary fillers are arranged on both sides of a bead filler, so that not less than ⅔ in the height direction of the bead filler is sandwiched by the auxiliary fillers.
摘要:
Disclosed is a pneumatic tire enabling to even a weight balance thereof in a tire circumferential direction in realizing reduction of cavity resonance noise by using an annular object having cross-sectional areas which vary depending on locations in the tire circumferential direction. The pneumatic tire of the present invention is one in which an annular object having cross-sectional areas which vary depending on locations in the tire circumferential direction is mounted on an inner surface of a tread portion. In the pneumatic tire, the annular object is formed by partially applying compression forming to a porous material member having a density of 5 to 70 kg/m3 and having an uniform cross-sectional shape in the tire circumferential direction.
摘要翻译:公开了一种充气轮胎,其能够通过使用具有根据轮胎周向上的位置而变化的截面面积的环形物体来实现轮胎周向上的重量平衡,从而实现空腔谐振噪声的降低。 本发明的充气轮胎是其中具有根据轮胎周向上的位置而变化的横截面积的环形物体安装在胎面部的内表面上。 在充气轮胎中,通过对密度为5〜70kg / m 3的多孔材料部件施加压缩成形,在轮胎周向具有均匀的横截面形状,形成环状物体 方向。
摘要:
A pneumatic tire allowed to increase steering stability and durability while reducing rolling resistance, wherein a reinforced rubber layer extending from a bead part along a side wall part is installed in the side wall part. A rubber composition forming the reinforced rubber layer has a loss of tangent (tan δ) measured at 60° C. of 0.01 to 0.25, a JIS-A hardness measured at 23° C. of 70 to 95, and a breaking elongation in a tension test measured at 23° C. of 200% or more.
摘要:
Disclosed are a tire wheel assembly and a noise-reducing device whereby cavity resonance sound can be effectively reduced. A noise-reducing device, which includes a shell structure where a rough surface portion having a ten-point height of irregularities (Rz) in a range of 0.1 to 5.0 mm is provided on at least part of a surface, is attached to a wheel rim in a cavity portion of a pneumatic tire, and additionally, a height of the shell structure from a rim sheet is set in a range of 10 to 70% of a cross-sectional height of the tire.
摘要:
A tire wheel comprising a disk and a rim for mounting a pneumatic tire joined to the peripheral edge of the disk. The rim includes a rim body joined to the disk and rim flanges joined to both width direction sides of the rim body. The disk is offset to one side with respect to the width direction center of the rim. The rim body has a rim body portion extending from a join position between the disk and the rim body to a boundary position between the rim body and the rim flange on the other side. The rim body portion consists of three equal sections into which the rim body portion is equally divided along the center axis of rotation of the wheel. The equal section positioned closer to the rim flange on the other side is thinner in average rim thickness.
摘要:
A tire wheel comprising a disk and a rim for mounting a pneumatic tire joined to the peripheral edge of the disk. The rim has left and right cylindrical bead seats with a hump which protrudes thereon, and left and right annular rim flanges joined to and extending wheel-radially outwardly from the outer side edges of the bead seats. A ring-like thick element extending along the circumferential direction of the wheel is provided on a portion of the bead seat located between the hump and rim flange of the rim located on the inner side of a vehicle when attached thereto.
摘要:
A tire/wheel assembly in which a run-flat support member 3 is inserted into a cavity of a pneumatic tire 2, the run-flat support member 3 including a circular shell 4 in which the outer circumferential side thereof is used as a support surface and the inner circumferential side thereof is opened to have two leg portions, and an elastic ring 5 supporting the ends of the two leg portions on a rim 1. The circular shell 4 is configured by jointing side edges 7, 7 of at least two shell segments 4a, each having a single convex circumferential surface.