Tire for use in two-wheeled motor vehicle and method for manufacturing the same
First Claim
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1. A tire for use in a two-wheeled motor vehicle, the tire comprising:
- a tread portion (2) whose tread surface (2a) extends from a tire equator (C) to tread ends (2e) upon curving in a convex arc-like manner, wherein in a condition in which the tire is assembled to a normal rim and in a normal internal pressure condition in which the tire is filled with normal internal pressure, a ratio (TW/h) of a tread width (TW) to a camber amount (h) is from 1.0 to 7.0, the tread width (TW) being a distance between the tread ends (2e, 2e) in a tire axial direction, the camber amount (h) being a distance from the tread ends (2e) to the tire equator (C) in a tire radial direction, a tread rubber disposed at the tread portion includes a strip wound body (10) constituted from a strip-like rubber strip (S) having a width (W) of 5 to 30 mm and a thickness (t) of 0.3 to 1.5 mm spirally wound around in a tire circumferential direction, and a rubber strip (SP) on a front surface side that constitutes the tread surface (2a) is wound around at an angle (α
) less than 15°
with respect to the tire circumferential direction.
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Accused Products
Abstract
The tire for use in a two-wheeled motor vehicle is arranged in that in a condition in which the tire is assembled to a normal rim and in a normal internal pressure condition in which the tire is filled with normal internal pressure, a ratio (TW/h) of a tread width (TW), which is a distance between the tread ends (2e, 2e) in a tire axial direction, to a camber amount (h), which is a distance from the tread ends (2e) to the tire equator (C) in a tire radial direction, is 1.0 to 7.0. A tread rubber (Tg) disposed at the tread portion (2) includes a strip wound body (10) constituted from a strip-like rubber strip (S) having a width (W) of 5 to 30 mm and a thickness (t) of 0.3 to 1.5 mm spirally wound around in a tire circumferential direction. A rubber strip (SP) on a front surface side that constitutes the tread surface (2a) is wound at an angle (α) which is less than 15° with respect to the tire circumferential direction.
15 Citations
13 Claims
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1. A tire for use in a two-wheeled motor vehicle, the tire comprising:
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a tread portion (2) whose tread surface (2a) extends from a tire equator (C) to tread ends (2e) upon curving in a convex arc-like manner, wherein in a condition in which the tire is assembled to a normal rim and in a normal internal pressure condition in which the tire is filled with normal internal pressure, a ratio (TW/h) of a tread width (TW) to a camber amount (h) is from 1.0 to 7.0, the tread width (TW) being a distance between the tread ends (2e, 2e) in a tire axial direction, the camber amount (h) being a distance from the tread ends (2e) to the tire equator (C) in a tire radial direction, a tread rubber disposed at the tread portion includes a strip wound body (10) constituted from a strip-like rubber strip (S) having a width (W) of 5 to 30 mm and a thickness (t) of 0.3 to 1.5 mm spirally wound around in a tire circumferential direction, and a rubber strip (SP) on a front surface side that constitutes the tread surface (2a) is wound around at an angle (α
) less than 15°
with respect to the tire circumferential direction. - View Dependent Claims (2)
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3. A method for manufacturing a radial tire for use in a two-wheeled motor vehicle which includes a tread portion (2) whose tread surface (2a) extends from a tire equator (C) to tread ends (2e) upon curving in a convex arc-like manner, where in a condition in which the tire is assembled to a normal rim and in a normal internal pressure condition in which the tire is filled with normal internal pressure, a ratio (TW/h) of a tread width (TW) to a camber amount (h) is from 1.0 to 7.0, the tread width (TW) being a distance between the tread ends (2e, 2e) in a tire axial direction, the camber amount (h) being a distance from the tread ends (2e) to the tire equator (C) in a tire radial direction, the method comprising:
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a strip wound body forming step of forming a strip wound body (10) that constitutes a tread rubber (Tg) by winding a strip-like rubber strip (S) having a width (W) of 5 to 30 mm and a thickness (t) of 0.3 to 1.5 mm spirally in a tire circumferential direction around an object to be wound (U) having an outer peripheral surface (Ua) that curves in a convex arc-like manner, wherein a rubber strip (SP) on a front surface side that constitutes the tread surface (2a) includes;
a first rubber strip (S1) that is wound around from one tread end (2e) to the tire equator (C) at an angle (α
) which is less than 15°
with respect to the tire circumferential direction; and
a second rubber strip (S2) that is wound around from the other tread end (2e) to the tire equator (C) at an angle (α
) which is less than 15°
with respect to the tire circumferential direction, and that overlaps with the first rubber strip (S1) on the tire equator (C). - View Dependent Claims (4, 9, 10)
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5. A method for manufacturing a radial tire for use in a two-wheeled motor vehicle which comprises a tread portion (2) whose tread surface (2a) extends from a tire equator (C) to tread ends (2e) upon curving in a convex arc-like manner, where in a condition in which the tire is assembled to a normal rim and in a normal internal pressure condition in which the tire is filled with normal internal pressure, a ratio (TW/h) of a tread width (TW) to a camber amount (h) is from 1.0 to 7.0, the tread width (TW) being a distance between the tread ends (2e, 2e) in a tire axial direction, the camber amount (h) being a distance from the tread ends (2e) to the tire equator (C) in a tire radial direction, the method comprising:
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a strip wound body forming step of forming a strip wound body (10) that constitutes a tread rubber (Tg) by winding a strip-like rubber strip (S) having a width (W) of 5 to 30 mm and a thickness (t) of 0.3 to 1.5 mm spirally in a tire circumferential direction around an object to be wound (U) having an outer peripheral surface (Ua) that curves in a convex arc-like manner, wherein the strip wound body (10) is constituted from a single rubber strip (S1), the method further comprises;
a first stage of winding the rubber strip (S1) from a winding start end (S1a) between the tread ends (2e, 2e) towards one tread end (2e);
a second stage of winding the rubber strip (S1) that has been folded over at the one tread end (2e) towards the other tread end (2e); and
a third stage of winding the rubber strip (S1) that has been folded over at the other tread end (2e) up to the tire equator (C) or proximate thereof to terminate thereat, and an angle (α
) of a rubber strip (SP) on a front surface side that constitutes the tread surface (2a) is less than 15°
with respect to the tire circumferential direction. - View Dependent Claims (6, 7, 11, 12, 13)
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8. A method for manufacturing a radial tire for use in a two-wheeled motor vehicle which comprises a tread portion (2) whose tread surface (2a) extends from a tire equator (C) to tread ends (2e) upon curving in a convex arc-like manner, where in a condition in which the tire is assembled to a normal rim and in a normal internal pressure condition in which the tire is filled with normal internal pressure, a ratio (TW/h) of a tread width (TW) to a camber amount (h) is from 1.0 to 7.0, the tread width (TW) being a distance between the tread ends (2e, 2e) in a tire axial direction, the camber amount (h) being a distance from the tread ends (2e) to the tire equator (C) in a tire radial direction, the method comprising:
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a strip wound body forming step of forming a strip wound body (10) that constitutes a tread rubber (Tg) by winding a strip-like rubber strip (S) having a width (W) of 5 to 30 mm and a thickness (t) of 0.3 to 1.5 mm spirally in a tire circumferential direction around an object to be wound (U) having an outer peripheral surface (Ua) that curves in a convex arc-like manner, wherein the strip wound body (10) is constituted from a single rubber strip (SI), the method further comprises;
a first stage of winding the rubber strip (S1) from a winding start end (S1a) at one tread end (2e) towards the other tread end (2e); and
a second stage of winding the rubber strip (S1) that has been folded over at the other tread end (2e) up to the tire equator (C) or proximate thereof to terminate thereat, and an angle (α
) of a rubber strip (SP) on a front surface side that constitutes the tread surface (2a) is less than 15°
with respect to the tire circumferential direction.
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Specification
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Current AssigneeSumitomo Rubber Industries Limited
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Original AssigneeSumitomo Rubber Industries Limited
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InventorsTanaka, Takashi
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Application NumberUS11/313,940Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current152/209.110CPC Class CodesB29D 30/1628 by feeding a continuous ban...B29D 30/60 by winding narrow stripsB60C 11/00 Tyre tread bands; Tread pat...B60C 2200/10 for motorcycles, scooters o...
