JPH11245606A - Wheel for tire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce an unbalance weight waste generated at the time of rim assembly and of rim recombination by reducing an unbalance corrected amount of a tired wheel and reducing a balance weight amount necessary for the correction. SOLUTION: A cavity 26 is disposed inside a central rim portion 16 of a wheel 10 for a tire as a filling portion, and a cross-sectional area shape along a tire axial direction of the cavity 26 is formed to be an ellipse extended in parallel to the tire axial direction. Water 28 is filled in the cavity 26. An iron powder 30 having a bigger specific gravity than that of water 28 is mixed into water 28. When the tired wheel 10 is rotated, the diffused iron powder 30 is collected at a place for correcting an unbalance in the cavity 26 to reduce a vibration of the tired wheel 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire wheel, and more particularly to a tire wheel for correcting an unbalance of a wheel with a tire in a rotating state.

[0002]

2. Description of the Related Art Conventionally, in order to correct the unbalance of a wheel with a tire in a rotating state, mainly lead is used as a material,
A metal fitting for attaching to the rim end surface of the wheel or a weight having an adhesive layer adhered to the rim surface is attached at a position where the weight is balanced with the unbalance amount of the tire measured by the balance measuring device.

[0003]

However, in such a conventional technique, in order to reuse the weight at the time of correcting the balance, it is necessary to remove or replace a mounting bracket or a fixing adhesive layer. It is difficult to reuse as it is. As a result, it is necessary to discard the used weight,
Since the weight is made of lead, there is a disposal problem.

[0004] Further, due to the demand for higher speed of the vehicle and the comfort of the user, the accuracy of balance correction has been required more than before, and 5g which is a general supply unit of weight is required.
It is not possible to deal with ticks. For this reason, weights are cut and adjusted, but in this case, the fractional weight part becomes a small piece in most cases and cannot be diverted and must be discarded. Even in this case, there is a disposal problem because the material is lead.

[0005] Further, since the weight is fixed to a place where it is appropriate to correct the imbalance of each wheel with a tire, it is difficult to specify the place where the weight is attached, and removing the wheel when disposing of the wheel is costly and burdensome.

Further, when the rotating body has an imbalance,
It is known that when a flowing object is placed inside it, it gathers at the place where the imbalance is corrected and has the effect of reducing vibration, and using this, it is possible to freely move inside the tire inside the air chamber inside the tire It is conceivable to include a diffuser consisting of powder or granules, which means that the diffuser is mixed into the air which mainly supports the load of the tire. However, the air pressure of the tire fluctuates depending on the season and small leaks from the air seal layer and the valve of the tire require replenishment of compressed air, but under general conditions, compressed air contains moisture. Is often contained, and this moisture inhibits the fluidity of the diffuser inside the tire or solidifies to reduce the effect of correcting the imbalance or become a new cause of the imbalance.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and the amount of unbalance correction for a wheel with a tire can be reduced to reduce the amount of balance weight required for correction. It is an object to provide a tire wheel that can reduce waste.

[0008]

According to a first aspect of the present invention, there is provided a tire wheel having a ring-shaped filling portion formed on a rim portion and extending in a circumferential direction of the rim, a balance fluid filled in the filling portion, and And a diffuser having a specific gravity greater than that of the balance fluid mixed into the balance fluid.

Therefore, when the wheel with a tire is rotated, the balance fluid flows in a ring-shaped filling portion formed on the rim portion of the wheel and extending in the circumferential direction of the tire, and a predetermined amount of the balance fluid is mixed into the balance fluid. A diffuser having a higher specific gravity than the fluid, for example, granules, powders, and liquids, are uniformly dispersed in the balance fluid by the flow of the balance fluid, and then, when the wheel with tires is unbalanced, the diffusion occurs. The body collects where the imbalance is corrected in the filling and reduces the vibration of the tired wheel. As a result, the unbalance correction amount of the tired wheel is reduced, the amount of balance weight required for correction can be reduced, and the balance weight waste generated at the time of rim assembly and rim replacement can be reduced. In addition, since the balance fluid is filled in the filling portion formed in the rim portion of the wheel, the solid content of the diffuser is higher than in the conventional technology in which the diffuser is mixed in air mainly supporting the load of the tire. There is no problem such as the formation of the product.

As the balance fluid, a gas such as air or a liquid such as water or oil, preferably a gel-like liquid having a low flow resistance can be used.

According to a second aspect of the present invention, in the tire wheel according to the first aspect, a stirring means for stirring the balance fluid is provided on an inner peripheral surface of the filling portion.

Therefore, in addition to the contents described in the first aspect, when the balance fluid flows in the ring-shaped filling portion, the balance fluid is effectively formed by the stirring means formed on the inner peripheral surface of the filling portion. Stir. As a result, the diffuser in the balance fluid that has settled on the ground contact surface side of the tire in the filling portion before the rotation of the wheel with the tire is quickly introduced into the balance fluid by the stirring of the balance fluid performed simultaneously with the rotation of the wheel with the tire. To spread. Therefore, after that, since the diffuser gathers at the place where the imbalance is corrected in the filling portion, the imbalance correction at the time of rotation of the wheel with the tire is completed in a short time.

The stirring means may be provided on one, a plurality, or all of the outer inner peripheral surface, the inner inner peripheral surface, and the inner peripheral side surface of the filling portion. In order to effectively diffuse the diffuser, it is preferable that the diffuser be provided on the outer inner peripheral surface of the filling portion.

According to a third aspect of the present invention, in the tire wheel according to the first or second aspect, the filling portion extends in a rim width direction, and both ends reach near both ends in the rim width direction. It is characterized by being.

Therefore, in addition to the contents described in claim 1 or claim 2, the dimension of the filling portion in the rim width direction can be increased.
The dimension in the rim radial direction can be reduced. That is, since the balance fluid and the diffuser can be arranged as far outward as possible in the rim radial direction, the balance correction effect is improved.

According to a fourth aspect of the present invention, in the tire wheel according to any one of the first to third aspects, the filling portion is divided into a plurality of portions along the rim width direction. I do.

Therefore, in addition to the contents of any one of the first to third aspects, by dividing the filling portion into a plurality of portions along the rim width direction, the amount of the balance fluid and the diffuser in each filling portion can be reduced. In addition, since the material can be changed, the accuracy of balance correction is improved.

According to a fifth aspect of the present invention, in the tire wheel according to any one of the first to fourth aspects, a filling port and an air vent for filling the filling portion with the balance fluid and the diffuser are provided. It has a mouth.

Therefore, in addition to the contents described in any one of the first to fourth aspects, during the production, while extracting air from the filling section through the air vent, the balance fluid is supplied to the filling section through the filling port. And since the diffuser can be filled, the filling operation can be performed smoothly.

According to a sixth aspect of the present invention, in the tire wheel according to any one of the first to fifth aspects, a surface of the filling portion facing the outer peripheral side of the rim has a wheel rotation axis in a rim width direction. It is characterized by being parallel to.

Therefore, in addition to the contents described in any one of claims 1 to 5, when the diffuser gathers at the place where the imbalance is corrected in the filling portion, the diffuser is provided on the outer peripheral side of the rim of the filling portion. Can be prevented from being biased to one side in the rim width direction.

According to a seventh aspect of the present invention, in the tire wheel according to any one of the first to sixth aspects, the balance fluid is a gas.

Therefore, in addition to the contents described in any one of the first to sixth aspects, since the filling portion is formed on the rim portion of the wheel, even if a gas is used as the balance fluid, the filling portion is formed. Is not compressed by the pressure of the air filled in the tire. As a result, the weight can be reduced by using gas as the balance fluid.

According to an eighth aspect of the present invention, there is provided a tire wheel according to the present invention, wherein a ring-shaped filling portion formed on the rim portion and extending in the circumferential direction of the rim is communicated with the filling portion. And a filling port and an air vent for filling with a diffuser having a larger specific gravity than the above.

Accordingly, the filling portion of the rim is filled with the balance fluid and the diffuser through the filling port, and at this time, the air in the filling portion is evacuated through the air vent. The wheel thus assembled is mounted on a tire. Therefore, when the wheel with a tire is in a rotating state, the balance fluid flows in the ring-shaped filling portion formed on the rim portion of the wheel and extends in the tire circumferential direction, and is mixed with the balance fluid by a predetermined amount. The diffuser, which has a large specific gravity, is evenly diffused into the balance fluid by the flow of the balance fluid,
Thereafter, if the tired wheel is unbalanced, the diffuser collects at the location in the fill where the imbalance is corrected, reducing the vibration of the tired wheel. As a result, the unbalance correction amount of the tired wheel is reduced, the amount of balance weight required for correction can be reduced, and the balance weight waste generated at the time of rim assembly and rim replacement can be reduced. Further, there is no problem such as solidification of the diffuser as compared with the related art in which the diffuser is mixed in the air mainly supporting the load of the tire.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a tire wheel according to the present invention will be described below with reference to FIGS.

As shown in FIG. 1, in this embodiment, a tire wheel 10 includes an outer rim portion 12 forming an outer end of an outer peripheral portion of the wheel 10, and an inner rim forming an inner end of an outer peripheral portion of the wheel. A rim portion 14 and a center rim portion 16 forming a central portion of an outer peripheral portion of the wheel are provided. A center hub portion 18 forming a central portion of an outer surface of the wheel is provided with a center hub portion 18 of the outer rim portion 12 and the central rim portion 16. It is connected to the boundary by the connecting portion 20.

Further, in the wheel 10 of the present embodiment, a cavity 26 as a filling portion is provided in the central rim portion 16, and a cross-sectional shape of the cavity 26 along the tire axial direction is in the tire axial direction. It has an elongated oval shape. Also,
A surface 26A of the cavity 26 facing the rim outer peripheral side is parallel to the wheel rotation axis 10A in the rim width direction.

As shown in FIG. 2, the cavity 26 has a ring shape along the tire circumferential direction, and the cavity 26 is filled with water 28 as a balance fluid. The water 28 contains a predetermined amount of iron powder 30 as a diffuser having a specific gravity greater than that of the water 28.

The inner peripheral portion of the central rim portion 16 has approximately 1
A filling port 36 and an air vent 38 communicating with the cavity 26 are formed at a position of 80 degrees.
8 and iron powder 30 are filled in the cavity 26, and at this time, the air in the cavity 26 is evacuated through the air vent 38. After the filling of the water 28 and the iron powder 30 into the cavity 26 is completed, the filling port 36 and the air vent 38 are closed.

The filling port 36 and the air vent 38 use outlets for taking out sand and the like used as a core when the wheel 10 is cast with aluminum, duralumin, or the like. The wheel before filling the water 28 and the iron powder 30 into the inside 26 may be used as a product.

Therefore, when the wheel 10 with the tire starts rotating, the iron powder 30 in the cavity 26 is substantially uniformly dispersed in the water 28 by the flow of the water 28 from the portion that has settled by gravity. When the tired wheel 10 is unbalanced, as shown in FIG.
Gather at the location in the cavity 26 where the imbalance is to be corrected to reduce tire vibration.

As shown in FIG. 3, a hemispherical projection 32 as a stirring means is formed on the outer inner peripheral surface 26A of the cavity 26, and when the water 28 flows in the cavity 26, The water 28 is agitated by the convex portion 32 of the iron powder 30 and the iron powder 30 deposited on the tread side of the tire before the tire rotates.
However, it spreads quickly as the tire rotates.

Reference numeral 39 shown in FIG.
0 shows a cavity for reducing the weight of the cylinder.

Next, the operation of the present embodiment will be described. In the present embodiment, when the wheel 10 with a tire is in a rotating state, water 28 flows in the cavity 26 in the rotation direction of the wheel 10 (the direction of the arrow A in FIG. 2), and is mixed into the water 28 and Iron powder 30 having a large specific gravity is
Flow, the water 2
The iron powder 30 then collects in the cavity 26 where it corrects the imbalance and reduces the vibration of the tired wheel 10, as shown in FIG. As a result, the amount of unbalance correction of the wheel with tires 10 is reduced, the amount of balance weight required for correction can be reduced, and the balance weight waste generated when assembling the rim and when replacing the rim can be reduced.

In this embodiment, since the iron powder 30 is mixed in the water 28 filled in the cavity 26, the diffuser is mixed in the air mainly supporting the load of the tire. In comparison with the prior art, no problem such as solidification of the iron powder 30 occurs.

In this embodiment, the ring-shaped cavity 2
In the inside 6, when the water 28 flows, the water 28 is agitated by the convex portion 32 formed on the outer inner peripheral surface of the cavity 26. As a result, before the rotation of the wheel, the iron powder 30 in the water 28 that had settled on
The water 28 is rapidly diffused into the water 28 by the agitation of the water 28 by the projection 32 at the same time as the zero rotation. Therefore, then
Since the iron powder 30 gathers at the place in the cavity 26 where the imbalance is to be corrected, the correction of the imbalance during rotation of the wheel with the tire is completed in a short time.

In the present embodiment, since the cavity 28 can be filled with the water 28 and the iron powder 30 through the filling port 36 while extracting air from the cavity 26 through the air vent 38 at the time of manufacturing, Can be performed smoothly.

In this embodiment, since the surface 26A of the cavity 26 facing the outer periphery of the rim is parallel to the wheel rotation axis 10A in the rim width direction, the iron powder 30 corrects the imbalance of the cavity 26. When gathering at the place, it is possible to prevent the iron powder 30 from being biased to one side in the rim width direction on the rim outer peripheral side of the cavity 26.

In this embodiment, since the cavity 26 is formed in the wheel 10, even if a gas such as air is used as the balance fluid, the cavity 26 is compressed by the pressure of the air filled in the tire. Never. As a result, the weight can be reduced by using gas as the balance fluid.

Next, a second embodiment of the tire wheel of the present invention will be described with reference to FIG. The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 5, in this embodiment, a cavity 40 similar to the cavity 26 is formed in the outer rim portion 12, and a cavity 42 similar to the cavity 26 is formed in the inner rim portion 14. Is formed. These cavities 40, 4
2 is filled with water 28 as a balance fluid. The water 28 contains a predetermined amount of iron powder 30 as a diffuser having a specific gravity greater than that of the water 28.

Therefore, in this embodiment, the cavities 26, 4
By dividing the filling portion into a plurality of portions along the wheel width direction by 0 and 42, the cross-sectional shape and the cross-sectional area of each of the cavities 26, 40, and 42 are adjusted so that each of the cavities 26 and 4
The water 28 and the iron powder 30 in 0 and 42 can be different from each other, and the accuracy of balance correction is improved.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are included in the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, as shown in FIG.
A configuration including two cavities, the cavity 40 and the cavity 42, may be adopted.

In each of the embodiments, the water 28 is used as the balance fluid. However, the balance fluid is not limited to the water 28, but may be a gas such as air, a liquid such as water or oil, and preferably a gel having a low flow resistance. May be used.

In each embodiment, the iron powder 30 having a specific gravity higher than the balance fluid is used. However, the diffuser having a higher specific gravity than the balance fluid is not limited to the iron powder 30, but may be iron sand, stainless steel powder, stainless steel powder, or the like. Natural substances such as sand or other substances that oxidatively decompose in air may be used. Furthermore, the material is not limited to granules and powders, and gels and liquids may be used.

Further, in each embodiment, the hemispherical convex portion 32 as the agitating means is formed, but the agitating means is not limited to the hemispherical convex portion 32 but may be a concave portion, a stirring plate or the like. Also,
The stirring means is an outer inner peripheral surface 26 of the cavity 26 as a filling portion.
A, one of inner inner peripheral surface 26B and inner peripheral side surface 26C,
The iron powder 30 may move outside the cavity 26 due to centrifugal force. However, in order to effectively diffuse the iron powder 30, the iron powder 30 may be provided on the outer inner peripheral surface 26A of the cavity 26. Is good.

[0048]

According to the first aspect of the present invention, there is provided a tire wheel having a ring-shaped filling portion formed in a rim portion and extending in a circumferential direction of the rim, a balance fluid filled in the filling portion, and a predetermined amount contained in the balance fluid. Since it has a diffuser with a higher specific gravity than the balance fluid mixed in, the amount of unbalance correction of the wheel with tire can be reduced, the amount of balance weight required for correction can be reduced, and the balance generated when the rim is assembled and when the rim is replaced It has an excellent effect that weight waste can be reduced. Further, it has an excellent effect that troubles such as solidification of the diffuser do not occur.

According to a second aspect of the present invention, in the tire wheel according to the first aspect, an agitating means for agitating the balance fluid is provided on the inner peripheral surface of the filling portion, and the effect of the first aspect is provided. In addition to this, there is an excellent effect that the imbalance correction during rotation of the wheel with the tire is completed in a short time.

According to a third aspect of the present invention, in the tire wheel according to the first or second aspect, the filling portion extends in the rim width direction, and both ends reach near the both ends in the rim width direction. Therefore, in addition to the effects described in claim 1 or claim 2, there is an excellent effect that the balance correction effect is improved.

According to a fourth aspect of the present invention, in the tire wheel according to any one of the first to third aspects, the filling portion is divided into a plurality of portions along the rim width direction.
In addition to the effects of any one of claims 1 to 3,
There is an excellent effect that the accuracy of balance correction is improved.

According to a fifth aspect of the present invention, in the tire wheel according to any one of the first to fourth aspects, a filling port and an air vent for filling a filling fluid with a balance fluid and a diffuser are provided. Therefore, in addition to the effects described in any one of claims 1 to 4, there is an excellent effect that the filling operation can be performed smoothly.

According to a sixth aspect of the present invention, in the tire wheel according to any one of the first to fifth aspects, a surface facing the rim outer peripheral side has a wheel rotation axis in a rim width direction. Since it is parallel, in addition to the effect described in any one of claims 1 to 5, there is an excellent effect that the diffuser can be prevented from being biased to one side in the rim width direction.

According to a seventh aspect of the present invention, in the tire wheel according to any one of the first to sixth aspects, since the balance fluid is a gas, the balance fluid is a gas. In addition to the effect described above, there is an excellent effect that the use of gas can reduce the weight.

According to an eighth aspect of the present invention, there is provided a tire wheel according to the present invention, wherein a ring-shaped filling portion formed on the rim portion and extending in the circumferential direction of the rim is communicated with the filling portion, and the filling portion has a balance fluid and a specific gravity higher than the balance fluid. A filling port and an air vent for filling a large diffuser with a large amount of the diffuser are used. The amount of unbalance correction is small, the amount of balance weight required for correction can be reduced, and there is an excellent effect that the balance weight waste generated when assembling the rim and when replacing the rim can be reduced. Further, it has an excellent effect that troubles such as solidification of the diffuser do not occur.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view along a wheel axis showing a tire wheel according to a first embodiment of the present invention.

FIG. 2 is a schematic side sectional view showing a filling portion of the tire wheel according to the first embodiment of the present invention.

FIG. 3 is a partially enlarged sectional view of FIG. 2;

FIG. 4 is a schematic sectional side view showing a filling portion of the tire wheel according to the first embodiment of the present invention when the wheel is rotating.

FIG. 5 is a schematic sectional view along a wheel axis showing a tire wheel according to a second embodiment of the present invention.

FIG. 6 is a schematic cross-sectional view along a wheel axis showing a tire wheel according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Tire wheel 12 Outer rim part 14 Inner rim part 16 Central rim part 26 Cavity (filling part) 28 Water (balance fluid) 30 Iron powder (diffuser) 32 Convex part (stirring means) 40 Cavity (filling part) 42 Cavity (Filling section)

Claims (8)

[Claims] 1. A ring-shaped filling portion formed in a rim portion and extending in a circumferential direction of the rim, a balance fluid filled in the filling portion, and a predetermined amount mixed into the balance fluid and having a specific gravity greater than that of the balance fluid. A tire wheel, comprising: a diffuser; 2. The tire wheel according to claim 1, wherein an agitator for agitating the balance fluid is provided on an inner peripheral surface of the filling section. 3. The tire wheel according to claim 1, wherein the filling portion extends in a rim width direction, and both end portions reach near both end portions in the rim width direction. 4. The tire wheel according to claim 1, wherein the filling portion is divided into a plurality of portions along a rim width direction. 5. The tire wheel according to claim 1, wherein the filling portion has a filling port and an air vent for filling the balance fluid and the diffuser. 6. The tire wheel according to claim 1, wherein a surface of the filling portion facing the rim outer peripheral side is parallel to a wheel rotation axis in a rim width direction. . 7. The tire wheel according to claim 1, wherein the balance fluid is a gas. 8. A ring-shaped filling portion formed in the rim portion and extending in the circumferential direction of the rim, and is filled with a balance fluid and a diffuser having a higher specific gravity than the balance fluid, the filling portion being connected to the filling portion. A filling port and an air vent for the tire.