摘要:
Provided is a low noise pneumatic tire in which the noise absorbing member on the inner peripheral surface of the tire is made less likely to be damaged when the pneumatic tire is removed from the rim. The pneumatic tire includes a noise absorbing member of a porous material which is attached to an inner peripheral surface of the tire. In the pneumatic tire, a lubricant is applied to the inner peripheral surface of the noise absorbing member. Alternatively, both end portions, in a tire width direction, of the inner peripheral surface of the noise absorbing member are covered with protective layers harder than the noise absorbing member.
摘要:
Provided are: a noise reduction device with an improved adhesion of objects 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: objects formed of a porous material; a band member for attaching the objects to the inner surface of a tire at two positions spaced at substantially equal intervals in the tire circumferential direction; and locking members formed of a thermoplastic resin. The band member is formed of a thermoplastic resin. Each object is disposed at a predetermined position in the tire circumferential direction, between the band member and the corresponding locking members. The locking members are bonded to the band member through the objects by thermal fusion.
摘要:
A tire noise reduction device and a pneumatic tire, in which tire vibration can be reduced while durability is maintained and tire noise is reduced. The tire noise reduction device includes two main sound absorbing members for changing the cross-sectional area of a cavity of a tire in the circumferential direction of the tire and two assistant sound absorbing members disposed between the two main sound absorbing members. Each of the sound absorbing members is formed of a porous material. Each main sound absorbing member includes a first sound absorbing part and a second sound absorbing part, where the second sound absorbing part has a density lower than that of the first sound absorbing part. Each assistant sound absorbing member has a density higher than that of the second sound absorbing part and a thickness less than that of the main sound absorbing member.
摘要:
A method of producing a pneumatic tire T having at least one hoop-and-loop fastener provided along the circumferential direction of the tire on the inner surface of the tire is disclosed. The method includes, forming on a building drum, a cylindrical first formed body with the at least one hoop-and-loop fastener intermittently attached to the radially inner surface thereof along the circumferential direction of the drum, forming a green tire by expanding the first formed body into a toroidal shape to press the first formed body against the inner peripheral side of an annular second formed body, and vulcanizing the green tire.
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:
A pneumatic tire including a cylindrical annular structure, a rubber layer that will become a tread portion provided along a circumferential direction of the annular structure, on an outer side of the annular structure, and a carcass portion including fibers covered by rubber, provided on both sides in a direction parallel to a center axis (Y-axis) of a cylindrical structure including the annular structure and the rubber layer.
摘要:
Disclosed is a low noise pneumatic tire in which a plurality of noise absorbing members of a porous material are attached to the tire inner peripheral surface with intervals in the tire circumferential direction. The number of the noise absorbing members is from 5 to 50. The total length obtained by integrating the lengths of the noise absorbing members in the tire circumferential direction is not less than 75% of the tire maximum inner peripheral length. The distance between each adjacent two of the noise absorbing members is equal to or more than the maximum thickness of the noise absorbing members at the end portions thereof in the tire circumferential direction, while being not more than 15% of the tire maximum inner peripheral length.
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 tire cavity resonance restricting device to be mounted on the inner surface of the tread portion facing to the cavity of a pneumatic tire. The tire cavity resonance restricting device includes a cross-sectional area changing member for changing the cross-sectional area of the cavity in tire meridian cross section, and an elastic fixing member in the form of a ring for fixing the cross-sectional area changing member to the inner surface of the tread portion. The elastic fixing member has an attachment portion to which the cross-sectional area changing member is attached and a non-attachment portion to which the cross-sectional area changing member is not attached. The non-attachment portion is greater in mass than the attachment portion.
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,并且在轮胎周向上具有均匀的横截面形状,形成环状物体。