Tire/wheel assembly and run-flat support member
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsAkira Kuramori, Atsushi Tanno, Masatoshi Kuwajima
Life of this patent
Estimating the term…
Abstract
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 elastic rings 5 supporting the ends of the two leg portions on a rim. The outer circumferential surface of the circular shell 4 in a cross-section cut in a tire width direction has a shape with a plurality of convex portions 4a, 4b, aligned in a tire width direction, and these convex portions have a plurality of different kinds of radius of curvatures and/or thickness.
Claims8
A tire/wheel assembly in which a run-flat support member is inserted in a cavity of a pneumatic tire, the run-flat support member including a circular shell in which an outer circumferential side thereof is used as a support surface and an inner circumferential side thereof is opened to have two leg portions, and elastic rings supporting the ends of the two leg portions on a rim,
- wherein the outer circumferential surface of the circular shell in a cross-section cut in a tire width direction has a shape with a plurality of convex portions aligned in a tire width direction, and
- the convex portions have a plurality of different kinds of radii of curvature
- wherein the convex portion, amongst the plurality of convex portions, disposed on an outer side of a vehicle body when fitted to the vehicle is formed to have a radius of curvature smaller than that of any other convex portion and the convex portion located on the outer side of the vehicle body has a radius of curvature within a range of 0.6 to 0.9 times the radius of curvature of th other convex portion.
A tire/wheel assembly in which a run-flat support member is inserted in a cavity of a pneumatic tire, the run-flat support member including a circular shell in which an outer circumferential side thereof is used as a support surface and an inner circumferential side thereof is opened to have two leg portions, and elastic rings supporting the ends of the two leg portions on a rim,
- wherein the outer circumferential surface of the circular shell in a cross-section cut in a tire width direction has a shave with a plurality of convex portions aligned in a tire width direction, and
- the convex portions have a plurality of different kinds of thicknesses,
- wherein the convex portion, amongst the plurality of convex portions, disposed on the outer side of the vehicle body when fitted to the vehicle is formed to have a peak and/or sidewall on the outer side of the vehicle body, the peak and/or sidewall having a thickness larger than that of any other convex portion.
A run-flat support member, comprising:
- a circular shell in which an outer circumferential side thereof is used as a support surface and an inner circumferential side thereof is opened to have two leg portions;
- and
- elastic rings which support ends of the two leg portions on a rim,
- wherein the outer circumferential surface of the circular shell in a cross-section cut in a tire width direction has a shape with a plurality of convex portions aligned in a tire width direction, and
- the convex portions have a plurality of different kinds of radii of curvature,
- wherein the convex portion, amongst the plurality of convex portions, disposed on an outer side of a vehicle body when fitted to the vehicle is formed to have a radius of curvature smaller than that of any other convex portion and the convex portion located on the outer side of the vehicle body has a radius of curvature within a range of 0.6 to 0.9 times the radius of curvature of the other convex portion.
A run-flat support member comprising:
- a circular shell in which an outer circumferential side thereof is used as a support surface and an inner circumferential side thereof is opened to have two leg portions;
- and
- elastic rings which support ends of the two leg portions a rim,
- wherein the outer circumferential surface of the circular shell in a cross-section cut in a tire width direction has a shape with a plurality of convex portions aligned in a tire width direction, and
- the convex portions have a plurality of different kinds of thicknesses,
- wherein the convex portion, amongst the plurality of convex portions, disposed on the outer side of the vehicle body when fitted to the vehicle is formed to have a peak and/or sidewall on the outer side of the vehicle body, the peak and/or sidewall having a thickness larger than that of any other convex portion.
Dependencies are inferred from the claim text.