摘要:
A rigidity measurement device of a tread ring comprises a support jig for detachably holding a tread ring unit. The support jig has an open part for deformably exposing a measurement area, which is one portion of the tread ring, to the exterior, and a restraining part for essentially non-deformably restraining a non-measurement area, which is an area other than the measurement area of the tread ring. The restraining part inhibits deformation of the non-measurement area, whereby stress is no longer generated in the non-measurement area and the rigidity of the measurement area alone can be measured.
摘要:
The purpose of the present invention is to minimize decline in endurance, while improving vibration performance. The spokes of an airless tire are provided, as an integrated unit, with an outside annular portion joined to the inside peripheral surface of a tread ring, an inside annular portion joined to the outside peripheral surface of a hub, and a spoke plate portion of constant thickness providing linkage therebetween. The radial inner edge and the radial outer edge of the center plane of thickness of the spoke plate portion are respectively diagonal with respect to a tire axial-direction line. The intersection line at which the center plane of thickness intersects a plane that is at a right angle to the tire axial-direction line constitutes a straight line. The spoke length, which is the length from the radial inner edge to the radial outer edge along the intersection line, is constant for any given location in the tire axial direction.
摘要:
[ Problem ] To provide a rubber compound for tires, a pneumatic tire and an airless tire capable of improving the steering stability of the tire while exerting excellent low fuel consumption performance. [ Solution ] A rubber compound for tires characterized in that, of vulcanized rubber's physical properties, a complex elastic modulus E* 70 (unit: MPa) and a loss tangent tan´ 70 under initial strain of 10 %, dynamic strain of 2 % and temperature of 70 degrees C, satisfy 90 800. A pneumatic tire provided with a rubber member made of the above-mentioned rubber compound. An airless tire provided with a rubber member made of the above-mentioned rubber compound. An airless tire provided in a tread ring with a shear rubber layer (107) made of the above-mentioned rubber compound.
摘要:
Provided is a non-pneumatic tire having excellent durability performance. This non-pneumatic tire is provided with an annular tread portion which contacts the road surface, an annular inner peripheral portion which is positioned radially inward of the tread portion, and multiple linking units which join the tread portion and the inner peripheral portion. The tread portion includes a first portion which contacts the road surface, and a second portion which includes an inner peripheral surface facing the inner peripheral portion. The thermal conductivity of the second portion is greater than that of the first portion.
摘要:
The present invention increases the bonding strength between a spoke and a tread ring and/or between a spoke and a hub to improve durability. An airless tire provided with a tread ring, a hub, and a spoke, wherein the spoke is integrally provided with: an outer annul ar porti on of whi ch the outer peripheral surface is bonded to the inner peripheral surface of the tread ring via a first adhesion layer; an inner annular portion of which the inner peripheral surface is bonded to the outer peripheral surface of the hub via a second adhesion layer, and a spoke portion which couples the inner and outer annular portions. The inner peripheral surface of the tread ring and/or the outer peripheral surface of the hub is composed of a roughened surface having a surface roughness (Ra) (arithmetic average roughness) of 3-1000 µm or a surface roughness (Rz) (ten-point average roughness) of 30-5000 µm.
摘要:
An air-less tire has, formed on a tread ring: tread rubber for forming a ground contact surface; an outer reinforcement cord layer provided nearest the tread rubber; an inner reinforcement cord layer provided inside the outer reinforcement cord layer in the radial direction of the tire; and a shear rubber layer provided between the outer reinforcement cord layer and the inner reinforcement cord layer. The outer reinforcement cord layer includes: a first cord layer having first cords arranged tilted relative to the circumferential direction of the tire; and a second cord layer provided outside the first cord layer in the radial direction of the tire and having second cords arranged tilted relative to the circumferential direction of the tire in the direction opposite the direction in which the first cords are tilted. The inner reinforcement cord layer includes a third cord layer having third cords arranged parallel to the circumferential direction or the axial direction of the tire.
摘要:
An airless tire has a cylindrical tread ring 2 having a ground-contacting surface 21, a hub disposed on the radially inside of the tread ring 2 and fixed to an wheel shaft, and spokes connecting between the tread ring 2 and the hub. The tread ring 2 has a side wall 22 continued from the ground-contacting surface 21 and forming a ring side surface. The side wall 22 has a supporting portion 23 which, when the tread ring 2 alone is horizontally laid on a horizontal surface H, contacts with a horizontal surface H and supports the tread ring 2 so that a ring axis A2 is oriented in a direction perpendicular to the horizontal surface H.
摘要:
A non-pneumatic tire has high durability performance. A non-pneumatic tire is provided with: an annular tread section (2) which comes into contact with the road surface; an annular inner peripheral section (3) which is located on the inside of the tread section (2) in the radial direction of the tire; and a plurality of connection sections (4) which connect the tread section (2) and the inner peripheral section (3). The connection sections (4), the inner surface (2b) of the tread section (2), and/or the outer surface (3a) of the inner peripheral section (3) is provided with a plurality of dimples (5).