摘要:
A run flat tire is provided on the inside of the carcass in the sidewall portion with a crescent-shaped reinforcing rubber having an axially outside part and an axially inside part each composed of a number of spiral windings of a narrow-width rubber strip. In the inside rubber part, spiral pitches P1 of the rubber strip forming the axially outer surface layer are larger than spiral pitches for the layer abutting on the inside thereof. In the outside rubber part, spiral pitch P2 of the rubber strip forming the axially inner surface layer are larger than spiral pitches for the layer abutting on the outside thereof.
摘要:
In order to provide a safety tire which is improved in a riding comfort characteristic to a large extent while maintaining run flat durability at a practicable level, assumed is a constitution of a safety tire A comprising a left and right pair of the bead parts 1, at least one carcass layer 2 coupled from one of the bead parts 1 to the other one thereof, the tread part 3 and the reinforcing belt 4 disposed at the outside in a tire radial direction of the carcass layer 2, a pair of the side wall parts 5 disposed left and right at the tread part 3, an inner liner layer 6 located at the inside of the carcass layer 2 and a pair of an annular side reinforcing rubber layers 7 having a crescent cross-section which are located between the carcass layer 2 and the inner liner layer 6 in a part corresponding to the side wall part, wherein in the side reinforcing rubber layer 7, an elastic modulus is gradually reduced in a range of 0.1 to 1.0 MPa in terms of a difference in a 100 % tension modulus of adjacent 2 mm layers at any part in a radial direction in the reinforcing rubber extending from the carcass layer side 2 to the inner liner layer side 7.
摘要翻译:为了提供一种提高乘坐舒适特性的安全轮胎,同时将运行平坦的耐久性保持在可行的水平,假设是包括左右一对胎圈部件1的安全轮胎A的构造, 至少一个胎体层2从胎圈部件1中的一个与另一个胎圈部分1相耦合,胎体部分3和加强带4设置在胎体层2的轮胎径向外侧,一对侧壁 在胎面部3处左右设置的部分5,位于胎体层2内侧的内衬层6和具有月牙形横截面的一对环状侧面增强橡胶层7,胎圈层6位于胎体层之间 2和内衬层6在对应于侧壁部分的部分中,其中在侧面增强橡胶层7中,以100%张力的差异,弹性模量在0.1至1.0MPa的范围内逐渐降低 modulu 在从胎体层侧2延伸到内衬层侧7的增强橡胶中的径向方向上的任何部分处相邻的2mm层。
摘要:
Pneumatic vehicle tyre of a radial type comprising a profiled tread rubber (1), a multiply belt assembly (2), an inner layer (4), a carcass (3) of at least one ply, which is taken around bead cores (6) in bead regions, sidewalls (8) and, incorporated in the region of each sidewall (8), at least one cross-sectionally crescent-shaped reinforcing profile (9) respectively extending at least over a large part of the length of the sidewall and consisting of elastomeric materials of different hardnesses. The vehicle tyre is distinguished by the fact that the reinforcing profile comprises three radial part-cores and an axially outer rubber layer, a radially upper part-core and a radially lower part-core respectively consisting of a hard elastomeric material, and a radially central part-core, arranged between the upper and lower part-cores, consisting of a soft elastomeric material.
摘要:
This invention relates to a pneumatic tire (1) having a sidewall (4) which contains at least one internal annular rubber insert (6, 7). In particular, this invention relates to pneumatic tires which rely upon internal pneumatic air pressure and to pneumatic tires which conventionally rely upon internal pneumatic air pressure but which have a capability of running for extended distances without any significant internal air pressure, namely ambient atmospheric air pressure, depending somewhat upon the positioning and configuration of the sidewall insert. At least one of said rubber sidewall inserts (6, 7) is composed of two segments (6A, 6B, 7A, 7B), namely a radially inner rubber segment (6A, 7A) and a radially outer rubber segment (7B, 6B). The inner rubber segment and outer rubber segment have significantly different modulus and hardness physical properties. A portion of the segments overlap each other. In one aspect, each of the segments of the dual segment sidewall insert may be comprised of various types of rubber compositions containing, for example, a dispersion of an ultra high molecular weight polyethylene and/or a dispersion of a starch/plasticizer composite and/or mixtures of carbon black and silica and/or any reinforcing and non-reinforcing materials that could be used to tune the gradient of stiffness.
摘要:
A pneumatic radial ply tire (86, 104) having a tread (106), a carcass (96, 108) with two sidewalls (88a, 88b, 116a, 116b), a radial ply structure (98, 110), and a belt structure (103, 117) located radially between the tread and the radial ply structure. Each sidewall is reinforced with at least one wedge insert (89a, 89b, 118a, 118b, 120a, 120b) which comprises alternating regions (90a, 90b, 122a, 122b) of flexible material and layers (91a, 91b, 124a, 124b) of stiffer material. The layer (91a, 91b, 124a, 124b) of stiffer material constrain the lateral expansion of the wedge insert (89a, 89b, 118a, 118b, 120a, 120b) during runflat operation to provide good riding comfort during normal inflation operation and good sidewall reinforcement during runflat operation.
摘要:
A pneumatic tire comprising a cylindrical tread (T), a pair of sidewalls (10), bead rings (20), a radial carcass (30), rubber fillers (40) respectively each arranged between turn-up portions (31) of the carcass and a main body of the carcass and extending from above the bead ring toward the tread portion such that the radially sectional shape of the rubber filler becomes narrower toward the tread portion, and a pair of thick rubber reinforcement layers arranged in the sidewalls (10). Each of the rubber reinforcement layers is constituted by first and second reinforcing rubber layers (50,60), the first reinforcing rubber layer (50) occupying a radially outer side of the sidewall (10) and the second reinforcing layer (60) being continued to a radially inner side of the first reinforcing rubber layer through an inclined joint surface (70) and arranged on a radially outer side of the rubber filler (40) through the main body of the carcass. The Shore A hardness of the rubber reinforcement layer is made greater in the order of the first reinforcing rubber layer (50), the second reinforcing rubber layer (60) and the rubber filler (40), and the rubber volume of the reinforcing rubber reinforcement layer is made greater in the order of the rubber filler (40), the second reinforcing layer (60) and the first reinforcing layer (50).
摘要:
Pneumatique de sécurité comprenant une bande de roulement (11) renforcée par une ceinture inextensible (23) des bourrelets espacés (12) et des flancs (14) reliaint les bourrelets aux côtés de la bande de roulement en délimitant sous cette dernière une chambre centrale gonflable (15), chaque flanc au moins étant renforcé par une carcasse (21 ) et comprenant, sur le côté intérieur de la carcasse un profilé de soutien en élastomère (20) à section lenticulaire s'étendant depuis le voisinage des bourrelets (12) jusque sous les bords de la ceinture, pneu caractérisé en ce que lesdits profilés de soutien (20) sont constitués de deux parties à souplesse différente dont l'un (20,) situé au voisinage de la face intérieure de la carcasse (21 ) est en élastomère plus souple tandis que l'autre (20 2 ), situé du côté de l'intérieur du pneu, est en élastomère moins souple.
摘要:
A run flat tire having a sidewall reinforcement layer formed from a rubber composition comprising 100 parts by weight of a diene rubber and 5-120 parts by weight of nonmetallic short fibers having an average fiber diameter of 1-100 µm and an average fiber length of 0.1-20 mm, the nonmetallic short fibers being oriented in the tire-periphery direction. The run flat tire can be improved in both of comfortableness in riding and run flat performance.
摘要:
Reinforcing rubber which constitutes a reinforcing rubber layer in a pneumatic tire 10 is formed by winding a plurality of beltlike reinforcing rubber sheets adapted to have almost the same cross-sectional area and cross-sectional shape around a forming drum over its entire periphery while being shifted in the axial direction of the forming drum such that at least portions thereof in the width direction of the tire overlap each other over the whole periphery of the forming drum and by separately jointing both longitudinal ends of the respective reinforcing rubber sheets. As a result, a pneumatic tire with improved run-flat durability without hindering comfortable riding can be formed while hindrances to manufacture are minimized.