JPH0611201Y2 - Wheel spacer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a wheel spacer, and more particularly to a spacer structure applied to a compound wheel type wheel.

(Prior Art) As is well known, double wheels are used for the rear wheels of vehicles such as trucks and buses that have a relatively large loading weight in order to reduce the ground load per unit area.

The compound wheels described above are constructed by fitting tires into the wheel discs that are integrated by being joined to each other, and can be interlocked with the rotation of the drive shaft connected to the wheel discs.

(Problems to be solved by the invention) By the way, in the above-mentioned compound wheels, in order to allow deformation in the width direction of the tire when the vehicle is in an unloaded state and is in a loaded state, the adjacent tires are adjacent to each other. There is a gap between the sidewall surfaces of the.

Therefore, during running, stones, wood chips, etc. scattered on the road surface are likely to be caught in this gap, and if these foreign substances get caught, they may cause vibration if they protrude from the tread surface of the tire. . In addition, there is a risk that the sidewall surface of the tire will be damaged by foreign matter and the tire will be damaged.

Therefore, an object of the present invention is to obtain a wheel spacer capable of preventing damage to a tire in advance, in view of the above-mentioned problem in the wheel, particularly in the compound wheel.

(Means for Solving the Problem) In order to achieve this object, a wheel spacer according to the present invention is an elastic spacer for compound wheels arranged between wheels of compound wheels. A plurality of streaks or a plurality of irregularities are provided on the surface facing the sidewall surface, which reaches a rim portion integrally provided between the sidewall surfaces of the tire and the outer circumference of the inner surface of the disc wheel of each tire. A pair of annular grooves that engage with the meat portion and the rim portion are integrally provided and sandwiched and held between the tires.

(Operation) According to the present invention, the state in which the expansion and contraction in the width direction of the tire is not hindered is maintained, and the foreign matter that has entered between the wheels is repelled and removed by elastic deformation when the portion separates from the road surface.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to FIGS.

FIG. 1 is a sectional view showing a state in which a wheel spacer according to an embodiment of the present invention is mounted.

In FIG. 1, a wheel spacer 1 is composed of an elastic body located between sidewall surfaces 2A and 3A of a compound wheel type tires 2 and 3, and at least a side wall surface 2A, 3A.
The flesh is formed to have a radial length in the range of the entire area of A and the rim portion 4A integrally provided on the disc wheel 4 for mounting the tire. Therefore, this flesh portion, as shown in the first illustration, in the radial direction of the tire,
This covers the range from the position slightly offset from the tread surface of the tires 2 and 3 toward the tire center side toward the rim portion 4A of the disc wheel 4.

Then, the tire 2 in the wheel spacer 1 described above,
As shown in the second drawing, a line-shaped groove 1A and a plurality of recesses or protrusions (not shown) are formed on the surface of the third side wall 3A that faces the side wall surfaces 2A and 3A. I try not to disturb as much as possible. Therefore, tires 2, 3
Will allow the sidewall surfaces 2A and 3A to expand and deform in the width direction when the load increases.

Further, as shown in FIGS. 2 and 3, a groove 1B into which the rim portion 4A can be fitted is formed at a position of the wheel spacer 1 facing the rim portion 4A of the wheel disc 4,
By fitting the rim portion 4A into the groove 1B, the rim portion 4A is prevented from falling off.

In FIG. 1, reference numeral 5 indicates a drive shaft integrated with the wheel disc 4, and the drive shaft 5 is integrated with the wheel disc 4 by integrally attaching the brake drum 6 to the wheel disc 4. ing.

The wheel space 1 having the above-described structure is attached by removing the outer tire 3.

That is, the outer tire 3 is removed and the inner tire 2 is
The wheel spacer 1 is pressed against the sidewall surface 2A of the wheel, and the rim portion of the wheel disc 4 is fitted into the groove 1B of the spacer 1.
4A is fitted and hooked, and in this state, the outer tire 3 is fitted into the set bolt 7 (see FIG. 1) and tightened via the nut 8 (see FIG. 1).

Since the present embodiment has the above-described structure, the tires 2, 3
When foreign matter such as stones from the road surface enters between the sidewall surfaces 2A and 3A in, the foreign matter is repelled and removed by the elastic restoring force of the spacer 1 itself when the tire leaves the ground contact surface.

According to this embodiment, it is possible to retrofit between the currently equipped compound wheels, so that a structure for protecting the tire can be set if necessary.

Further, according to the present embodiment, it is possible to increase the ground contact surface with respect to the road surface by using the spacer that can follow the deformation of the sidewall surface of the tire, and thus it is possible to function as a part of the tire. As a result, it is possible to improve the ability to escape from a place where the road surface condition is bad, such as an uneven terrain or a muddy land.

(Effect of the Invention) As described above, according to the present invention, since the spacer is sandwiched between the sidewall surfaces of the compound-wheel type tire, that is, the deformation of the sidewalls is not hindered as much as possible, foreign matter can enter the sidewall surfaces. In addition to preventing the above, the foreign matter that has entered can be easily removed, so that the damage to the tire can be prevented in advance.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a mounted state of a wheel spacer according to an embodiment of the present invention, FIG. 2 is a perspective view for explaining a positional relationship of the wheel spacer according to the embodiment of the present invention, and FIG.
FIG. 3 is a cross-sectional view taken along the arrow III-III in the drawing. 1 ... Wheel spacers, 1A ... Deformation-allowing structure of the sidewall surface formed on the surface of the tire facing the sidewall surface, 1B ... grooves, 2,3 ... tires, 2A, 3A ...
… Sidewall surface, 4 …… Disc wheel, 4A ……
Rim section.

Claims (1)

[Scope of utility model registration request] 1. An elastic spacer for a compound wheel arranged between wheels of a compound wheel, the spacer being integrally formed between sidewall surfaces of tires between the compound wheels and an outer circumference of an inner side surface of a disc wheel of each tire. A flesh portion that reaches a rim portion that is provided to face the sidewall surface and that has a plurality of streaks or a plurality of irregularities, and a pair of annular grooves that engage with the rim portion are integrally formed. A wheel spacer, which is provided and is sandwiched and held between the tires.