JPH04224401A - Wheel for tire - Google Patents

Abstract

PURPOSE:To decrease the number of regular spare tires and enhance the easiness of use by making a common wheel which can be mounted both on the left and on the right to the travel direction even in the case a tire having directionality is used. CONSTITUTION:A wheel is composed of a rim 2, on which a tire T having a directional tread pattern is mounted, and a disc 3 fixed to this rim 2, wherein a mount 4 for fixing the disc 3 is provided on each side of the rim 2.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire wheel that allows tires having a directional tread pattern to be mounted on both the left and right sides without changing the rim, thereby reducing the number of spare tires on hand.

0002

2. Description of the Related Art Tires for four-wheeled vehicles are mounted on a vehicle with a camber angle and a slip angle. Therefore, the installation condition and drainage performance of the tire are different between the inner side and the outer side with respect to the direction of travel.

In recent years, efforts have been made to balance the running performance of the inside and outside of tires, prevent uneven wear, and improve durability.
In addition, tires with so-called directional tread patterns, such as those in which horizontal grooves in the tread are arranged in a mountain shape from side to side around the tire equator, have become popular with the intention of improving hydroplaning performance and driving stability. It is being done.

0004

[Problem to be solved by the invention] For four-wheeled vehicles equipped with such directional tires, it is necessary to carry a so-called temporary spare tire for emergency use or a non-directional tire with a circumferential outer diameter as a spare tire. I'm here. In this case, the spare tire must be replaced with a regular tire at a later date, which is troublesome.

On the other hand, in order to equip the four-wheeled vehicle with the same ground tires as the tires mounted on it as spare tires, two tires, one for the right side and one for the left side, are mounted on respective rims. It is necessary to keep it on hand. Therefore, users who use directional tires have been hoping for a wheel that can be installed on either the left or right wheel without changing the rim assembly, and that requires only one tire to be kept on hand.

The present invention is based on the provision of mounting seats for mounting discs fixed to the axle on both sides of the rim on which the tire is mounted, so that even if the tire is directional, it can be mounted on the left and right sides respectively. The object of the present invention is to provide a wheel for tires that can share the same wheel, reduce the number of spare tires kept, and solve the above-mentioned problems.

[Means for Solving the Problems] The present invention provides a rim on which a tire is mounted, which has a directional tread pattern in which the tread pattern in the traveling direction changes by reversing the side surfaces, and a tire mounted on the rim. The tire wheel is composed of a disk fixed to an axle, and mounting seats for fixing the disk are provided at both ends of the rim.

[0007] Also, air filling valves can be attached to each end of the rim.

[0008]

[Operation] Since mounting seats are provided on both sides of the rim to fix the disc, the disc can be mounted on either the left or right side in the direction of travel of the vehicle, increasing the versatility of the wheel. Therefore, even if the tire is formed with a directional tread pattern, it is possible to assemble the rim in advance as a spare tire, making it easier to deal with a puncture. In addition, when valves are provided on both sides of the rim, the tire can be easily filled with air regardless of whether the rim-assembled wheel is mounted on the left or right side of the vehicle, improving usability. .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 3, a tire wheel 1 includes a rim 2 on which a tire is mounted, which has a directional tread pattern in which the tread pattern in the traveling direction changes by reversing the side surface S of the tire T; It consists of a disc 3 attached to the rim 2 and fixed to the axle X of the vehicle R.

The tire T includes sidewall portions 13 extending inward in the tire radial direction from both ends of the tread portion 12;
13, and bead portions 15, 15 located at the inner ends of the sidewall portion 13 in the radial direction, and the tire T is formed as a pneumatic tire having an inner cavity O filled with air.

Further, the tire T has a tread pattern on the tread surface 12a of the tread portion 12, with the tire equator C as an axis, and the tread pattern is different on one side S1 and the other side S2 of the tire T.

Therefore, the tread pattern of the tire T with respect to the traveling direction of the vehicle R is changed by having one side surface S1 and the other side surface S2 facing oppositely.

The rim 2 has a ring shape and a pair of bead bottom surfaces 16, 16 facing in the tire axial direction of the bead portion 15 on one side surface S1 of the tire T and the bead portion 15 on the other side surface thereof, respectively. The bead seat parts 6, 6 and the 2
The rim base body 9 includes two bead seat portions 6 and a joint portion 7 that connects the two bead seat portions 6. Further, a rim flange 21 is provided on the rim base body 9 and extends from the outer end of the bead seat portion 6 in the tire axial direction along the outer wall surface of the bead portion 15.

A pair of mounting seats 4A and 4B (generally referred to as mounting seats 4) are attached to the rim 2 on the inner surface of the joint portion 7 of the rim base 9. Said mounting seats 4A, 4B
is a ring-shaped plate body disposed on both sides of the tire axial direction with the tire equator C in between and at approximately equal intervals from the tire equator C, and the outer circumferential surface fits and is welded to the inner surface of the joint portion 7. etc., it is firmly fixed to the rim base 9. Further, the mounting seat 4 is provided with a plurality of through holes 23 extending in a direction substantially parallel to the tire axis. In addition, in the pair of mounting seats, one mounting seat 4A provided on one side surface S1 and the other mounting seat 4B provided on the other side surface S2 are formed to have the same shape and size.

The desk 3 is a disc body having a hole 24 in the center, and is provided with a bolt hole 25 that is aligned with the through hole 23 of the mounting seat 4 and is bored therein. Further, the desk 3 is provided with a mounting hole 26 through which a bolt for fixing the desk 3 to the mounting seat of the axle X passing through the hole 24 passes.

The rim base 9 has a groove between the bead seat portion 6 on one side surface S1 and one mounting seat 4A, and between the bead seat portion 6 on the other side surface S2 side and the other mounting seat 4B. Valve holes 27, 27 are respectively provided through the valve holes 27, 27, and a pair of valves 5, 5 of a well-known configuration for filling the inner cavity O of the tire T with air is attached to each of the valve holes 27, 27, respectively.

[0017] However, each bead seat portion 6, 6 of the rim 2
Fit the bead bottom surfaces 16 and 16 of the tire to the rim, attach the tire T to the rim, and use the bolt 29 inserted through both the through hole 23 of one mounting seat 4A and the bolt hole 25 of the desk 3 to attach the tire T to the rim. By fixing the mounting seat 4A and the desk 3, the desk 3 is fixed to the rim 2 at a position offset from the tire equator C toward one side surface S1, as shown in FIG. 3(A).

Furthermore, by bolting the desk 3 to the other mounting seat 4B using the above-mentioned method as shown in FIG. It is fixed to the rim 2.

As described above, the rim 2 is provided with mounting seats 4A and 4B on both sides thereof, respectively, for fixing the disk 3. Therefore, even when the tire T having a directional tread pattern as described above is mounted on the rim 3, the disc 3 can be fixed to the rim by selecting one mounting seat 4A and the other mounting seat 4B. Therefore, it can be attached to either side of the vehicle R in the traveling direction.

Furthermore, by attaching the valves 5, 5 to both sides of the rim 2, the disk 3 is buffered even when the disk 3 is attached to either the mounting seat 4A or 4B on one side or the other side. It is possible to fill air into the inner cavity of the tire without any trouble, improving usability.

FIG. 4 shows another example of the rim. In this example, the rim 2A is divided into three parts by a dividing line passing through the center of each mounting seat 4A, 4B into one side rim piece 31, middle rim piece 32, and other side rim piece 33, and the mounting seats 4A, 4B are divided into three parts. It is formed by abutting each piece to be formed and welding them together by spot welding or the like. The structure of this example is
The rim base and mounting seat can be molded simultaneously using a plate, making mass production possible.

[0022]

[Effects of the Invention] As mentioned above, since the tire wheel of the present invention has mounting seats for fixing the discs on both sides of the rim, it can be used even when a tire with a directional tread pattern is mounted. By selecting one of the two mounting seats and fixing the disc to either of the two mounting seats, the tire can be mounted either on the left or right side in the direction of travel, reducing the number of spare tires on hand. It also eliminates the need to load emergency tires on the vehicle.
Usability can be improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an example of the arrangement of a tire with a directional tread pattern.

FIG. 3 is a simplified cross-sectional view showing the operation, in which (A) shows a state where the disk is fixed to one side of the rim, and (B) shows a state where the disk is fixed to the other side.

FIG. 4 is a sectional view showing another example of the rim.

[Explanation of symbols]

2, 2A Rim 3 Disc 4, 4A, 4B Mounting seat 5 Valve S, S1, S2 side T Tire

Claims (2)

[Claims] Claim 1: A rim equipped with a tire having a directional tread pattern in which the tread pattern in the traveling direction changes by reversing the side surfaces, and a disc attached to the rim and fixed to the axle. A wheel for a tire, wherein the rim has mounting seats for fixing the disc at both ends of the rim. 2. The tire wheel according to claim 1, wherein the rim has air filling valves attached to both sides of the rim.