JPS62120003U

JPS62120003U -

Info

Publication number: JPS62120003U
Application number: JP822886U
Authority: JP
Priority date: 1986-01-22
Filing date: 1986-01-22
Publication date: 1987-07-30

Description

[Brief explanation of drawings]

図面は、本考案の一実施例を説明するためのも
ので、第１図は、空気タイヤ・チユーブがはめら
れた車輪の一部切欠き部分正面図、第２図は第１
図の―線における拡大横断面図、第３図は第
２図の―線における縦断面図である。１：車輪、２：リム、３：空気タイヤ、４：チ
ユーブ、５：バルブ、ｃ：チユーブの外側周円、
ｃ′：チユーブの内側周円、ｃ_１：チユーブの外
側周壁、ｃ′_１：チユーブの内側周壁、ｅ：チユ
ーブ４の内外側周円の各中心Ｏ，Ｏ′の偏心値、
ｔ：チユーブの外側周壁の肉厚上限値、ｔ′：チ
ユーブの内側周壁の肉厚下限値。 The drawings are for explaining one embodiment of the present invention, and FIG. 1 is a partially cutaway front view of a wheel fitted with a pneumatic tire tube, and FIG.
FIG. 3 is an enlarged cross-sectional view taken along the line ``-'' in the figure, and FIG. 3 is a longitudinal sectional view taken along the line ``--'' in FIG. 1: wheel, 2: rim, 3: pneumatic tire, 4: tube, 5: valve, c: outer circumference of tube,
c': inner circumferential circle of the tube, _c1 : outer circumferential wall of the tube, _c'1 : inner circumferential wall of the tube, e: eccentricity value of each center O, O' of the inner and outer circumferential circles of the tube 4,
t: Upper limit value of the wall thickness of the outer circumferential wall of the tube, t': Lower limit value of the wall thickness of the inner circumferential wall of the tube.

Claims

[Claims for Utility Model Registration] (1) A tube consisting of a hollow annular rubber tube is characterized in that the thickness of the tube is thinner on the rim side of the wheel and thicker on the tread side of the tire. tube in pneumatic bicycle tires. (2) Utility model registration claim No. (1) characterized in that the hollow rubber tube constituting the tube is such that the centers of the outer circumference and the inner circumference in its cross section are appropriately eccentric. Tubes in pneumatic bicycle tires as described in Section. (3) When the annular tube is viewed from the side, the wall thickness of the inner circumferential wall on the rim side of the wheel is 0.8 to 2.5 mm, preferably 1.5 to 2.0 mm.
mm, and the wall thickness of its outer peripheral wall on the tread side of the tire is 3.5 to 6.0 mm, preferably 4.0 mm.
A tube in a pneumatic tire for a bicycle according to claim 1 or 2, characterized in that the tube is within a range of 5.0 mm to 5.0 mm, respectively.