JPS63170110A - Pneumatic tire - Google Patents

Abstract

PURPOSE:To aim at prevention of damage of a rim flange etc. by providing a projection on the circumference of a tire side portion so as to make the full width of a tire wider than the width of the rim flange in the tire having the rim flange portion which projects from the side face of the tire under condition that a rim is assembled. CONSTITUTION:In a tire 1 having a rim flange which projects from the side face of the tire under condition that a rim 2 is assembled, a circular or intermittent projection is provided on the circumference of at least one side of a tire side portion. Thereby, the full width T of the tire 1, i.e. the length from the summit of the projection 3 of one side of the side portion to the same of the other side of the side portion, is made to be wider, i.e. larger than the full width of the rim flange R. Namely, the relation of T>R is established. Accordingly, when the tire 1 after assembly of the rim 2 is, for example, conveyed on a roller conveyer or handled on a working bench, the damage of the rim flange, the conveyer and the working bench etc., can be prevented.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention aims to prevent damage to rim flanges during horizontal stacking after rim assembly, damage to equipment and equipment on an automobile assembly line, or damage to automobile spare parts. This invention relates to a spare tire that prevents damage to the tire housing.

[Prior art]

On an automobile assembly line, when a tire is moved on a roller conveyor or the like with its rim assembled, there is a problem in that the flange directly contacts the conveyor or the like, causing damage to the rim flange or the conveyor. This is because, as shown in FIG. 5, the total rim flange width R of the rim 2 is too wide compared to the total width T of the spare tire l. A concrete solution to this problem would be to select a tire with a wider overall width, but this method goes against the lightweight and compactness that are some of the functions originally required of a spare tire. be.

[Purpose of the invention]

The present invention provides a spare tire that prevents damage to the rim flange, prevents the rim flange from damaging devices and equipment on the automobile assembly line, or damaging the spare tire accommodating portion of the automobile, and which is lightweight. The purpose is to provide.

[Structure of the invention]

Therefore, in a tire in which the rim flange protrudes from the side surface of the tire when the rim is assembled, the present invention provides an annular or intermittent protrusion on the circumference of at least one side of the tire so that the width of the tire is larger than the width of the rim flange. The gist of this is a pneumatic tire characterized by a wide width and a side surface of the tire that protrudes beyond the rim flange end.

Hereinafter, the configuration of the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a partial perspective view of an example of the pneumatic tire of the present invention, and FIG. 2 is an explanatory half-sectional view in the meridian direction thereof. In FIGS. 1 and 2, an annular projection 3 is provided between the side portions of the tire 1. As shown in FIG. This protrusion 3 may be a plurality of intermittent protrusions. Furthermore, the protrusion 3 only needs to be provided on the periphery of at least one side portion, and does not necessarily need to be provided on both side portions.

By providing the protrusion 3 in this way, the total width T of the tire 1 (the length from the top of the protrusion 3 on one side part to the top of the protrusion 3 on the other side part) is made wider than the rim flange total width R. (i.e., large) (T>R). In addition, the tread gauge A of the crown part and the height H of the protrusion 3 (
The length from the outermost point of the outermost carcass line in the tire width direction to the top of the protrusion 3 is 0.8A≦H≦
Preferably it is 3.4A.

In order to provide the protrusion 3 on the circumference of the side portion in this manner, for example, tire vulcanization may be performed using a mold 10 shown in FIG. 3. In FIG. 3, a certain portion on the circumference of the inner wall surface of the mold 10 corresponding to the tire side portion is recessed in an annular shape to form a recut portion 11. Therefore, during tire vulcanization molding, since rubber flows into the cassette part 11, a tire having the protrusions 3 can be obtained. In addition, it is also possible to vulcanize and mold a tire without the protrusion 3 by fitting the ring 12 into the rectangular part 11 as shown by the arrow, if necessary.

FIG. 4 shows another example of the pneumatic tire of the present invention. In FIG. 4, the positions of the protrusions 3 on the periphery of one side part and the positions of the protrusions 3 on the periphery of the other side part are shifted from each other. By arranging the protrusions 3 in this manner, the protrusions 3 can be fitted together without colliding with each other during horizontal stacking after assembling the rim, so that frontal slipping can be prevented.

〔Effect of the invention〕

As explained above, according to the present invention, an annular or intermittent protrusion is provided on the periphery of at least one tire side portion, and the total tire width is made wider than the rim flange width, so that the following effects can be achieved. .

■ Do not damage the rim flange, conveyor, workbench, etc. during transportation on the roller conveyor or handling on the workbench after 911 assembly.

■ By devising the shape of the protrusions, the protrusions fit gently into each other during horizontal stacking, making it possible to stabilize the horizontal stacking.

■ Brands, etc. can be engraved on the protrusion.

■ By fitting a ring into the recut part, it can be used as a mold without forming protrusions.

■ Since only a protrusion is provided on the circumference of the side of the tire, it is possible to reduce the weight compared to conventional wide spare tires.

[Brief explanation of the drawing]

Fig. 1 is a partial perspective view of an example of the pneumatic tire of the present invention, Fig. 2 is an explanatory half-sectional view in the meridian direction thereof, and Fig. 3 is an example of a mold used for vulcanization molding of the pneumatic tire of the present invention. FIG. 4 is an explanatory diagram showing another example of the pneumatic tire of the present invention, and FIG. 5 is an explanatory diagram showing an example of a conventional pneumatic tire. ■... Tire, 2... Rim, 3... Protrusion, 10...
...Mold, 11...Recut part, 12...Ring.

Claims (1)

[Claims] In a tire in which the rim flange protrudes from the side surface of the tire when the rim is assembled, an annular or intermittent protrusion is provided on the circumference of at least one side of the tire, and the total width of the tire is larger than the width of the rim flange. A pneumatic tire characterized by a wider tire.