JP2001180206A - Disk wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk wheel allowing improvement in comfortableness, vibration-proof performance and soundproof performance without impairing driving stability, durability and safety from a small input to a large input. SOLUTION: This disk wheel has a disk 1 with a base rim 2; a rim 3 supporting a tire 20; at least one guide 4 annularly fixed on the inner circumference face of the rim 3 in the tire radial direction; one or more wall parts 5 annularly fixed on the outer circumference face of the base rim 2 in the tire radial direction; and rubber laminate bodies 6 annularly provided between side faces of the guide 4 and side faces of the wall parts 5 and formed by alternately laminating rubbers and steel sheets in the tire axial direction. Preferably, the disk wheel is annularly provided with a rubber elastic body 7 as a stopper on a face facing an end part of the guide 4 or the wall part 5 in the tire radial direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk wheel used for a vehicle wheel, and more particularly to a disk wheel excellent in steering stability, ride comfort, vibration proof performance and sound proof performance.

[0002]

2. Description of the Related Art A disk wheel generally includes a disk fixed to an axle hub and a rim for supporting a tire. A vibration isolator is provided between the disk and the rim to provide vibration isolation and ride comfort. Various disk wheels have been proposed so far. For example, Japanese Utility Model Application Laid-open No. 59-188
Japanese Patent Publication No. 701 proposes a tire wheel in which the ride comfort is improved by using a spring as a vibration isolator.

[0003] Further, there is also known a rubber used as a vibration isolator, which is disposed between a rim and a disk.
For example, Japanese Utility Model Laid-Open No. 57-73203 proposes a disk wheel having a structure in which a rim is connected to a disk via a rubber-like elastic body. Further, Japanese Patent Application Laid-Open No. 5-338
Japanese Patent Publication No. 401 discloses a disc wheel in which a gap is formed between a rim and a disc wheel, and a vibration-proof rubber is interposed in the gap. Furthermore, WO983366
Publication No. 6 discloses a wheel barrier assembly in which an annular rubber strip is disposed between an inner rim and a rim having the same profile as the rim.

[0004]

However, in a conventional disk wheel in which rubber is used as a vibration isolator and the rubber is uniformly arranged between the rim and the disk, the inner peripheral surface of the rim and the outer peripheral surface of the disk are used. Since rubber elastic bodies that are vulcanized and bonded to each other are provided between the rim and the surface, the rubber elastic bodies accurately suppress the axial, radial, and rotational vibrations transmitted from the rim to the disk. However, there is a problem that the displacement of the rubber elastic body under a large load cannot be suppressed. That is, the rubber has a uniform cross section, and it has been difficult to obtain appropriate vibration prevention characteristics from small input to large input. In this regard, there is a similar problem even if a spring is used as the vibration isolator.

Further, the relationship between the rubber disposed between the rim and the disc and the soundproofing performance has not always been clarified, and there is still room for improvement in terms of soundproofing.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to improve the ride comfort, vibration proof performance and sound proof performance from a small input to a large input without deteriorating the steering stability, durability and safety. Is to provide.

[0007]

Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems while making use of the characteristics of the rubber elastic body as a vibration isolator, and have achieved the above-mentioned object by adopting the following constitution. The inventors have found that the present invention can be performed, and have completed the present invention. That is, the disk wheel of the present invention is as described below.

<1> In a disc wheel having a disc having a base rim and a rim for supporting a tire, at least one guide fixed radially and annularly on an inner peripheral surface of the rim. And at least one wall fixed in a tire radial direction and annularly on the outer peripheral surface of the base rim, and rubber and a steel plate are alternately arranged in the tire axial direction between these guides and the side surfaces of the wall. A disk wheel characterized in that a laminated rubber laminate is straddled in a ring shape.

<2> In a disk wheel provided with a disk having a base rim and a rim for supporting a tire, a diameter concentrically arranged between an outer peripheral surface of the base rim and an inner peripheral surface of the rim. At least one guide fixed radially and annularly on the inner peripheral surface of the outer annular member of the two types of annular members different from each other, and on the outer peripheral surface of the inner annular member in the tire radial direction and A rubber laminate having at least one wall portion fixed in an annular shape, and a rubber and a steel plate alternately stacked in the tire axial direction between these guides and the wall portion is provided in an annular manner. A disc wheel wherein an elasticity imparting tool is inserted.

<3> In the disk wheel of the above <1> or <2>, a rubber elastic body as a stopper is annularly disposed on a surface of the guide or the wall facing the radial end of the tire. It is a disk wheel.

<4> In any one of the above-mentioned <1> to <3>, the guide is located substantially at the center of the rim in the tire axial direction, and the wall portions are formed as a pair in both side regions in the tire axial direction. A disk wheel, wherein the rubber laminate is annularly provided between both side surfaces of the guide and both inner side surfaces of the pair of wall portions.

<5> In any one of the above-described <1> to <3>, the pair of the guides are located in both side regions in the tire axial direction, and the wall portion is located substantially at the center of the rim in the tire axial direction. A disk wheel, wherein the rubber laminate is annularly straddled between both side surfaces of the wall portion and both inner side surfaces of the pair of guides.

<6> In any one of the above-described <1> to <3>, the pair of guides may be arranged side by side, and the wall may be wider than the width of the pair of guides in the tire axial direction. And a pair of side-by-side disk wheels, wherein the rubber laminate is annularly straddled between both outer side surfaces of the pair of guides and both inner side surfaces of the pair of wall portions.

<7> In any one of the above-mentioned <1> to <3>, the pair of guides may be arranged side by side, and the wall may be narrower than the width between the pair of guides in the tire axial direction. A disk wheel having a pair of guides arranged side by side in width, wherein the rubber laminate is annularly provided between both inner side surfaces of the pair of guides and both outer side surfaces of the pair of wall portions.

According to the invention of the above <1> to <7>, the vibration is absorbed by the vertical shear deformation of the installed rubber laminate,
In particular, it is possible to improve the riding comfort performance, vibration proof performance and sound proof performance for a small input. The soundproofing performance is extremely effective for soundproofing in a high frequency region of 100 Hz or more. Furthermore, since the rubber laminate has a higher rigidity in the tire axial direction than in the tire radial direction, the lateral rigidity of the tire is maintained, and a decrease in steering stability can be prevented. Further, in particular, according to the invention <3>, large deformation can be prevented by a compressive action of the rubber elastic body as a stopper disposed in a ring shape for a large input.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk wheel according to an embodiment of the present invention shown in FIG. 1 includes a disk 1 fixed to an axle hub (not shown) and a base rim 2. The base rim 2 may be formed integrally with the disk 1. A guide 4 is fixedly mounted in an annular shape substantially at the center of the inner peripheral surface of the rim 3 supporting the tire 20 in the tire axial direction.
A pair of walls 5 are fixed in a ring shape at both ends in the axial direction on the outer peripheral surface of the base rim 2, for example, by vulcanization bonding between both side surfaces of the guide 4 and both inner surfaces of the wall portion 5. The rubber laminate 6 bonded by bonding means such as the above is laid in a ring shape. At this time, as shown in the figure, it is preferable that the cross-section in the tire axial direction of the rubber laminate 6 be mountain-shaped with the guide 4 as a vertex in order to secure the rigidity in the vertical direction.
The rubber laminate 6 is formed by alternately laminating rubber and a steel plate in the tire axial direction, and such a laminated structure itself is known as a vibration-proof material in building materials and the like. Due to the presence of the rubber laminate 6, vibration is absorbed by the vertical shear deformation of the rubber laminate, and the ride comfort performance, especially for a small input,
It is possible to improve the vibration proof performance and the sound proof performance, and since the rigidity in the tire axial direction is higher than the tire radial direction, the rigidity in the lateral direction of the tire is maintained and it is possible to prevent a decrease in steering stability. it can.

A rubber elastic body 7 is annularly interposed on the outer peripheral surface of the base rim 2 facing the radially inner end of the guide 4 with an appropriate clearance from the end. The rubber elastic body 7 is adhered to the outer peripheral surface of the base rim 2 by, for example, an adhesion means such as vulcanization adhesion. Due to the presence of the rubber elastic body 7, even if a large input is generated, large deformation can be prevented by the compressing action of the rubber elastic body 7 as a stopper.

The structure of the preferred embodiment described above includes the guide 4 and the wall 5
The guide 4 is located in a pair on both sides in the tire axial direction, and the wall 5 is located substantially at the center of the rim 3 in the tire axial direction. Even if the rubber laminate 6 is annularly straddled between both inner surfaces of the guide 4,
The same effects as in the above preferred embodiment can be obtained.

As shown in FIG. 2, in a disk wheel according to another embodiment of the present invention, a pair of guides 4a and 4b are annularly arranged side by side.
The width of the pair of walls 5a and 5b is wider than the width between the tires 4b in the tire axial direction. In the illustrated preferred example, the inner ends in the tire radial direction of the pair of guides 4a and 4b are connected as shown in the figure, and the cross section in the tire axial direction is substantially U.
It is shaped like a letter. Between the outer surfaces of the pair of guides 4a and 4b and the inner surfaces of the pair of walls 5a and 5b, rubber laminates 6a and 6b similar to those described above are provided in a ring shape. Also in this case, it is preferable to make the cross section of the rubber laminate 6 in the tire axial direction a mountain shape with the directions of the guides 4a and 4b as vertices in order to secure the rigidity in the vertical direction. Due to the presence of the rubber laminates 6a and 6b, the same operation and effect as in the case of the above-described preferred example are obtained, and the ride comfort performance, the vibration isolation performance,
It is possible to improve the soundproofing performance and to prevent the steering stability from decreasing.

A connecting surface 4 formed by connecting the radially inner ends of the guides 4a and 4b to each other.
c on the outer peripheral surface of the base rim 2 opposite to the connecting surface 4c.
The rubber elastic body 7 as a stopper is fixed in a ring shape with an appropriate gap. Due to the presence of the rubber elastic body 7, large deformation can be prevented by the compressing action of the rubber elastic body 7 as a stopper even when a large input occurs, as in the case of the preferred embodiment.

The above-mentioned structure includes the guides 4a and 4b and the wall 5
a, 5b, and a pair of guides 4 arranged side by side.
a pair of wall portions 5a, 5b are arranged side by side with a width smaller than the width in the tire axial direction between the pair of guide wall portions 4a, 4b.
Even if the rubber laminates 6a and 6b are laid in a ring shape between both inner side surfaces of the pair b and the outer side surfaces of the pair of wall portions 5a and 5b, the same effect as in the preferred embodiment can be obtained. .

In this case, as shown in FIG. 3, the height of the base rim 2 in the tire radial direction is made higher than the wall portions 5a, 5b on both sides of the base rim 2 so that the rubber elastic body 7c is annularly interposed. The rubber elastic body 7c is not particularly limited in its installation place and form as long as the rubber elastic body 7c can function as a stopper when a large input occurs.
In the preferred embodiment shown in FIG. 3, the rubber elastic body 7c is hollow having a hole 10, and a hole 11 as an orifice is also formed in the base rim 2 so as to have a pneumatic damping function. Further, by making the hole diameter variable, the damping force can be changed. As a result, it is possible to further enhance the riding comfort performance, the vibration proof performance and the sound proof performance by the action of the selected optimum pneumatic damping.

FIG. 4 shows a disk wheel according to another embodiment of the present invention. In this preferred embodiment, an elasticity-imparting tool having the same function as the preferred embodiment shown in FIG. 1 is inserted between the outer peripheral surface of the base rim 2 and the inner peripheral surface of the rim 3. The elasticity-imparting device comprises a guide 4 fixedly annularly provided substantially at the center of the inner peripheral surface of the outer annular body 9 in the tire axial direction, of two kinds of annular bodies having different diameters arranged concentrically.
It has a pair of wall parts 5 fixed annularly at both ends in the tire axial direction on the outer peripheral surface of the inner annular body 8, between the both side surfaces of the guide 4 and both inner side surfaces of the wall part 5, respectively. The rubber laminate 6 is provided in a ring shape. On the outer peripheral surface of the inner annular body 8 facing the radially inner end of the guide 4, a rubber elastic body 7 is annularly interposed with an appropriate clearance from the end.

In such an elasticity-imparting device, the space between the inner peripheral surface of the outer annular body 9 and the outer peripheral surface of the inner annular body 8 is shown in FIG.
The structure of the present invention is not limited to the preferred example shown in FIG. With this structure, for example, when the rubber is deteriorated or damaged, only the elasticity imparting tool can be replaced.

The rubber elastic body that can be used in the present invention may be a known rubber vibration insulator.
A natural rubber or a synthetic rubber, for example, butadiene rubber, a styrene-butadiene copolymer rubber, a diene rubber such as butyl rubber, and an appropriate compounding agent such as sulfur, a vulcanization accelerator, an antioxidant, and carbon black are appropriately compounded. Can be prepared.

It has been confirmed that the disk wheels according to the preferred embodiments of the present invention described above can absorb vibrations due to the shear deformation of the rubber laminate. As a result, from a small input to a large input, it is possible to improve the ride comfort, the vibration proof performance and the sound proof performance without deteriorating the durability and safety. Was extremely effective for soundproofing in a high frequency region of 100 Hz or more. In addition, the rigidity in the lateral direction is maintained by the structure of the rubber laminate, so that a decrease in steering stability can be prevented.

[0027]

As described above, the disc wheel according to the present invention can be used in a range from a small input to a large input without deteriorating the steering stability, durability and safety. The soundproof performance can be improved.

[Brief description of the drawings]

FIG. 1 is an enlarged partial sectional view of a disk wheel according to an embodiment of the present invention.

FIG. 2 is an enlarged partial cross-sectional view of a disk wheel according to another embodiment of the present invention.

FIG. 3 is an enlarged partial cross-sectional view of a disk wheel according to still another embodiment of the present invention.

FIG. 4 is an enlarged partial sectional view of a disk wheel according to still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc 2 Base rim 3 Rim 4 Guide 5 Wall 6 Rubber laminate 7 Rubber elastic body 8 Inner annular body 9 Outer annular body 10, 11 hole 20 Tire

Claims (7)

[Claims] 1. A disc wheel comprising a disc having a base rim and a rim for supporting a tire,
At least one guide fixed radially and annularly on the inner peripheral surface of the rim and at least one wall fixed radially and annularly on the outer peripheral surface of the base rim; Between these guides and the side of the wall,
A disc wheel comprising: a rubber laminated body formed by alternately laminating rubber and a steel plate in a tire axial direction in a ring-like manner. 2. A disc wheel comprising a disc having a base rim and a rim for supporting a tire,
Two types of annular bodies having different diameters arranged concentrically between an outer peripheral surface of the base rim and an inner peripheral surface of the rim,
At least one guide fixed radially and annularly on the inner circumferential surface of the outer annular body and at least one wall fixed radially and annularly on the outer circumferential surface of the inner annular body Between the guide and the wall portion, an elasticity imparting tool in which a rubber laminate formed by alternately laminating rubber and a steel plate in the tire axial direction is inserted in an annular manner is inserted. A disk wheel. 3. The disc wheel according to claim 1, wherein a rubber elastic body as a stopper is annularly provided on a surface of the guide or the wall portion facing a radial end of the tire. 4. The guide is located substantially at the center of the rim in the tire axial direction, the pair of wall portions are located in both side regions in the tire axial direction, and both sides of the guide and the inside of the pair of wall portions are provided. The disk wheel according to any one of claims 1 to 3, wherein the rubber laminate is provided in a ring shape between the side surfaces. 5. A pair of said guides are located in both side regions in the tire axial direction, said wall portion is located substantially at a center of a rim in a tire axial direction, and both side surfaces of said wall portion and inside of said pair of guides are provided. The disk wheel according to any one of claims 1 to 3, wherein the rubber laminate is provided in a ring shape between the side surfaces. 6. A pair of said guides are juxtaposed, and said wall portion is juxtaposed in a pair with a width wider than a width in a tire axial direction between said pair of guides. The disk wheel according to any one of claims 1 to 3, wherein the rubber laminate is annularly provided between both inner side surfaces of the pair of wall portions. 7. The pair of guides are arranged side by side, and the wall portions are arranged in a pair so as to be narrower than the width in the tire axial direction between the pair of guides, and both inner surfaces of the pair of guides are provided. The disk wheel according to any one of claims 1 to 3, wherein the rubber laminate is annularly straddled between the outer wall surfaces of the pair of wall portions.