Non-pneumatic tire

Patent metadata

Field	Value
Publication number	US-2019070902-A1
Application number	US-201816117905-A
Country	US
Kind code	A1
Filing date	Aug 30, 2018
Priority date	Sep 7, 2017
Publication date	Mar 7, 2019
Grant date	—

Abstract

In a non-pneumatic tire, at least one of a first connecting portions extends in such fashion as to be directed from one side in a tire width direction of an inner annular portion to the other side in a tire width direction of an outer annular portion, at least one of a second connecting portions extends in such fashion as to be directed from the other side in the tire width direction of the inner annular portion to the one side in the tire width direction of the outer annular portion, such that, the at least one second connecting portion appears to intersect the at least one first connecting portion, and that a maximum dimension in a tire radial direction of at least one of the closed spaces is greater than or equal to a maximum dimension in the tire width direction of the at least one closed space.

First claim

What is claimed is:

1 . A non-pneumatic tire comprising:
an inner annular portion and an outer annular portion that are arranged in concentric fashion; and a plurality of first connecting portions and a plurality of second connecting portions that are arrayed in alternating fashion in a tire circumferential direction and that connect the inner annular portion and the outer annular portion; wherein the first and second connecting portions are formed so as to be planar and are arranged so as to face the tire circumferential direction; at least one of the first connecting portions extends in such fashion as to be directed from one side in a tire width direction of the inner annular portion to the other side in the tire width direction of the outer annular portion; at least one of the second connecting portions extends in such fashion as to be directed from the other side in the tire width direction of the inner annular portion to the one side in the tire width direction of the outer annular portion, such that, as viewed in the tire circumferential direction, the at least one second connecting portion appears to intersect the at least one first connecting portion in such fashion as to appear to cause formation of a pair of closed spaces between the at least one second connecting portion and the at least one first connecting portion; and a maximum dimension in a tire radial direction of at least one of the closed spaces is greater than or equal to a maximum dimension in the tire width direction of the at least one closed space.

2 . The non-pneumatic tire according to claim 1 wherein
endpoints at a location at which a dimension in the tire width direction of the at least one closed space achieves a maximum are arranged so as to be nearer to that annular portion, which of the inner annular portion and the outer annular portion is the nearer to the at least one closed space, than a center of the at least one closed space in the tire radial direction.

3 . The non-pneumatic tire according to claim 1 wherein
the pair of closed spaces comprises an inner closed space toward an interior in the tire radial direction, and an outer closed space toward an exterior in the tire radial direction; and
endpoints at a location at which a dimension in the tire width direction of the inner closed space achieves a maximum are arranged so as to be nearer to the inner annular portion than a center of the inner closed space in the tire radial direction.

4 . The non-pneumatic tire according to claim 1 wherein
the pair of closed spaces comprises an inner closed space toward an interior in the tire radial direction, and an outer closed space toward an exterior in the tire radial direction; and
endpoints at a location at which a dimension in the tire width direction of the outer closed space achieves a maximum are arranged so as to be nearer to the outer annular portion than a center of the outer closed space in the tire radial direction.

5 . The non-pneumatic tire according to claim 1 wherein
the first and second connecting portions are provided with curved portions at locations that are disposed at end portions in the tire radial direction and that are disposed toward an interior in the tire width direction;
the curved portions have side edges that are curved in concave fashion as viewed in the tire circumferential direction; and
endpoints at a location at which a dimension in the tire width direction of the at least one closed space achieves a maximum are located partway along the curved portions in the tire radial direction.

6 . The non-pneumatic tire according to claim 5 wherein
the first and second connecting portions are provided with linear portions at locations that are disposed at end portions in the tire radial direction and that are disposed toward an interior in the tire width direction;
the linear portions have side edges that are linear as viewed in the tire circumferential direction; and
the linear portions are arranged between the annular portions and the curved portions in such fashion as to be contiguous with the annular portions.

7 . The non-pneumatic tire according to claim 6 wherein
at least one of the side edges of at least one of the linear portions is tangent to at least one of the side edges of at least one of the curved portions at a boundary between the at least one linear portion and the at least one curved portion.

8 . The non-pneumatic tire according to claim 1 wherein
a first region at which at least one of the annular portions is contiguous with the first connecting portion and a second region at which the at least one annular portion is contiguous with the second connecting portion are arranged so as to appear to partially overlap as viewed in the tire circumferential direction.

9 . The non-pneumatic tire according to claim 1 wherein
the maximum dimension in the tire width direction of the at least one closed space is 10% to 85% of the maximum dimension in the tire radial direction of the at least one closed space.

Assignees

• Toyo Tire & Rubber Co

Inventors

• Kajiwara Kohei

Classifications

• B60B9/26

  comprising resilient spokes · CPC title

• B60C7/12 Primary

  using enclosed chambers, e.g. gas-filled · CPC title

• B60C7/18 Primary

  disposed radially relative to wheel axis · CPC title

• B60B9/12

  in the form of sleeves or rings concentric with the wheel axis · CPC title

• B60C2007/146

  Operations & Transport · mapped topic