JP3993931B2 - Tire wheel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tire wheel, and more particularly to a tire wheel for correcting unbalance of a wheel with a tire in a rotating state.
[0002]
[Prior art]
Conventionally, in order to correct the unbalance of a wheel with a tire in a rotating state, the balance is mainly made of lead and using a metal fitting for attachment to the rim end surface of the wheel or a weight having an adhesive layer adhered to the rim surface. It is attached at a position that balances the unbalanced amount of the tire measured with the measuring device.
[0003]
[Problems to be solved by the invention]
However, in such a conventional technique, in order to reuse the weight at the time of balance correction, it is necessary to remove and replace the mounting bracket or the fixing adhesive layer, which is difficult to reuse as it is. As a result, it is necessary to discard the used weight, but there is a problem in disposal because the material of the weight is lead.
[0004]
Further, the balance correction accuracy is required more than ever due to the demand for higher speed of the vehicle and the comfort of the user, and it is not possible to cope with the increment of 5 g which is a general weight supply unit. For this reason, the weight is cut and adjusted, but in this case, the fraction of the weight that has become a fraction is almost always a small piece that cannot be diverted and must be discarded. In some cases, the material is lead, which causes disposal problems.
[0005]
In addition, since the weight is fixed at an appropriate mounting location for correcting the unbalance of each wheel with tire, it is difficult to specify the mounting location, and it is both expensive and labor intensive to remove the wheel when it is discarded.
[0006]
In addition, it is known that when there is an imbalance in the rotating body, if an object that flows into the rotating body is put inside, it will gather at the place where the imbalance is corrected and has the effect of reducing vibrations. It is conceivable to place a diffuser made of powder or granules that can move freely inside the tire in the air chamber, but this is mixed with the diffuser in the air that mainly supports the tire load Means that. However, tire air pressure varies depending on the season and a minute leak from the air seal layer or valve of the tire necessitates replenishment of compressed air. Under general conditions, compressed air contains moisture. In many cases, the moisture impedes the fluidity of the diffuser inside the tire, or solidifies to reduce the effect of correcting the imbalance or to become a new cause of imbalance.
[0007]
The present invention has been made in view of the above problems, and the amount of unbalance correction of a wheel with a tire can be reduced to reduce the amount of balance weight necessary for correction, and balance weight waste generated at the time of rim assembly and rim assembly can be reduced. It is an object to provide a tire wheel that can be reduced.
[0008]
[Means for Solving the Problems]
The tire wheel of the invention according to claim 1 is:
A ring-shaped filling portion formed in the rim portion and extending in the circumferential direction of the rim;
A balance fluid filled in the filling portion;
A diffuser mixed in a predetermined amount in the balance fluid and having a greater specific gravity than the balance fluid;
It has a, on the inner peripheral surface of the filling portion, characterized in that the agitating means for agitating the balance fluid is provided.
[0009]
Therefore, when the wheel with a tire is rotated, the balance fluid flows in a ring-shaped filling portion formed in the rim portion of the wheel and extending in the tire circumferential direction, and a predetermined amount is mixed into the balance fluid and is more than the balance fluid. Diffusers with high specific gravity, for example, granules, powders, and liquids, diffuse evenly into the balance fluid due to the flow of the balance fluid, and then fill the diffuser if the wheel with tire is unbalanced It gathers in the place where the imbalance in the department is corrected, and the vibration of the wheel with the tire is reduced. As a result, the unbalance correction amount of the wheel with tire is reduced, the amount of balance weight required for the correction can be reduced, and the balance weight waste generated at the time of rim assembly and rim assembly can be reduced. In addition, since the filling fluid formed in the rim portion of the wheel is filled with the balance fluid, the solid state of the diffuser is higher than that of the conventional technology in which the diffuser is mixed in the air mainly supporting the tire load. There are no problems such as conversion. Further, when the balance fluid flows in the ring-shaped filling portion, the balance fluid is effectively stirred by the stirring means formed on the inner peripheral surface of the filling portion. As a result, the diffuser in the balance fluid that has settled on the tire contact surface side in the filling portion before the tire-equipped wheel rotates is quickly squeezed into the balance fluid by the agitation of the balance fluid performed simultaneously with the rotation of the tire-equipped wheel. To spread. Therefore, after that, since the diffuser gathers at a place where the unbalance in the filling portion is corrected, the unbalance correction during the rotation of the wheel with the tire is completed in a short time.
[0010]
As the balance fluid, a gas such as air, a liquid such as water or oil, and preferably a gel-like liquid with low flow resistance can be used. The stirring means may be provided on one, a plurality, or all of the outer inner peripheral surface, inner inner peripheral surface, and inner peripheral side surface of the filling portion, but the diffuser moves outside the filling portion by centrifugal force. Therefore, in order to effectively diffuse the diffuser, it is preferable to provide it on the outer peripheral surface of the filling portion.
[0014]
According to a second aspect of the invention, a tire wheel according to claim 1, wherein the filling part extends in the rim width direction, characterized in that both ends reaches to the vicinity rim width direction end portions.
[0015]
Therefore, in addition to the contents of claim 1 , the dimension of the filling portion in the rim width direction can be increased, and the dimension of the rim radial direction can be decreased. That is, since the balance fluid and the diffuser can be disposed as far as possible in the rim radial direction, the balance correction effect is improved.
[0016]
According to a third aspect of the present invention, in the tire wheel according to the first or second aspect , the filling portion is divided into a plurality along the rim width direction.
[0017]
Therefore, in addition to the contents of claim 1 or claim 2 , by dividing the filling portion into a plurality along the rim width direction, the amount and material of the balance fluid and diffuser in each filling portion can be changed. This improves the balance correction accuracy.
[0018]
According to a fourth aspect of the present invention, in the tire wheel according to any one of the first to third aspects, a filling port and an air vent port for filling the filling portion with the balance fluid and a diffuser. It is characterized by having.
[0019]
Therefore, in addition to the contents of any one of claims 1 to 3, during manufacture, while extracting the air from the filling section through the air vent port, balanced fluid and the filling section through the fill port Since the diffuser can be filled, the filling operation can be performed smoothly.
[0020]
According to a fifth aspect of the present invention, in the tire wheel according to any one of the first to fourth aspects, the surface of the filling portion facing the rim outer peripheral side is a wheel rotation shaft in the rim width direction. It is characterized by being parallel.
[0021]
Therefore, in addition to the contents of any one of claims 1 to 4, when gathering in places where diffuser is to correct the imbalance in the filling section, the rim outer circumferential side of the filling unit, the diffuser is It is possible to prevent biasing to one side in the rim width direction.
[0022]
According to a sixth aspect of the present invention, in the tire wheel according to any one of the first to fifth aspects, the balance fluid is a gas.
[0023]
Therefore, in addition to the contents of any one of claims 1 to 5, the filling unit, which is formed on the rim of the wheel, the use of gas as a balance fluid-filled portion It 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.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
A tire wheel according to a first embodiment of the present invention will be described below with reference to FIGS.
[0027]
As shown in FIG. 1, in the present embodiment, the tire wheel 10 includes an outer rim portion 12 that constitutes an outer end portion of the outer peripheral portion of the wheel 10 and an inner rim portion 14 that constitutes an inner end portion of the outer peripheral portion of the wheel. And a central rim portion 16 that constitutes the central portion of the outer peripheral portion of the wheel, and a center hub portion 18 that constitutes the central portion of the outer surface of the wheel is provided at the boundary between the outer rim portion 12 and the central rim portion 16. They are connected by the connecting part 20.
[0028]
Further, in the wheel 10 of the present embodiment, a cavity 26 as a filling portion is disposed in the central rim portion 16, and a cross-sectional shape of the cavity 26 along the tire axial direction is an ellipse extending in the tire axial direction. It has become a shape. A surface 26A of the cavity 26 facing the rim outer peripheral side is parallel to the wheel rotation shaft 10A in the rim width direction.
[0029]
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 is mixed with a predetermined amount of iron powder 30 as a diffuser having a specific gravity greater than that of the water 28.
[0030]
In addition, a filling port 36 and an air vent port 38 communicating with the cavity 26 are formed at a position of approximately 180 degrees on the inner peripheral portion of the central rim portion 16, and water 28 and iron powder 30 are formed via the filling port 36. In the cavity 26, and at this time, the air in the cavity 26 is extracted through the air vent 38. In addition, 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 port 38 are closed.
[0031]
The filling port 36 and the air vent port 38 use an outlet for taking out sand or the like used as a core when the wheel 10 is cast with aluminum, duralumin or the like. A wheel before filling with water 28 and iron powder 30 can also be used as a product.
[0032]
Therefore, when the tire-equipped wheel 10 starts to rotate, the iron powder 30 in the cavity 26 is dispersed substantially uniformly in the water 28 by the flow of the water 28 from the portion where it has been settled by gravity, and then the tire-equipped wheel. When 10 is unbalanced, as shown in FIG. 4, the iron powder 30 gathers at a place in the cavity 26 where the unbalance is corrected, and reduces the vibration of the tire.
[0033]
As shown in FIG. 3, hemispherical convex portions 32 as stirring means are formed on the outer inner peripheral surface 26 </ b> A of the cavity 26, and these convex portions are formed when the water 28 flows in the cavity 26. 32, the water 28 is agitated, and the iron powder 30 that has precipitated on the ground contact surface side of the tire before the tire rotation is rapidly diffused simultaneously with the tire rotation.
[0034]
In addition, the code | symbol 39 shown in FIG. 1 has shown the cavity for reducing the weight of the wheel 10. As shown in FIG.
[0035]
Next, the operation of this embodiment will be described.
In the present embodiment, when the tire-equipped wheel 10 is in a rotating state, the water 28 flows in the rotation direction of the wheel 10 (in the direction of arrow A in FIG. 2) in the cavity 26, and is mixed in the water 28 rather than the water 28. The iron powder 30 having a large specific gravity is uniformly diffused into the water 28 from the portion where it has been precipitated by gravity due to the flow of the water 28, and then, as shown in FIG. At the place where the balance is corrected, the vibration of the wheel with tire 10 is reduced. As a result, the unbalance correction amount of the wheel with tire 10 is reduced, the amount of balance weight required for the correction can be reduced, and the balance weight waste generated at the time of rim assembly and rim assembly can be reduced.
[0036]
Further, in the present 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 tire load. In comparison with this, problems such as solidification of the iron powder 30 do not occur.
[0037]
Further, in the present embodiment, when the water 28 flows in the ring-shaped cavity 26, the water 28 is agitated by the convex portions 32 formed on the outer peripheral surface of the cavity 26. As a result, the iron powder 30 in the water 28 that has settled on the ground contact surface side of the wheel 10 before the rotation of the wheel is mixed into the water 28 due to the stirring of the water 28 by the convex portion 32 performed simultaneously with the rotation of the wheel 10. Spread quickly. Therefore, since the iron powder 30 gathers in the place where the unbalance in the cavity 26 is corrected thereafter, the unbalance correction during the rotation of the wheel with the tire is completed in a short time.
[0038]
Further, in the present embodiment, at the time of manufacture, the air 26 can be filled into the cavity 26 through the filling port 36 while the air is extracted from the cavity 26 through the air vent 38, so that the filling operation is smoothly performed. Yes.
[0039]
Moreover, in this embodiment, since the surface 26A facing the rim outer peripheral side of the cavity 26 is parallel to the wheel rotation shaft 10A in the rim width direction, the iron powder 30 gathers at a place where the unbalance of the cavity 26 is corrected. In this case, the iron powder 30 can be prevented from being biased to one side in the rim width direction on the rim outer peripheral side of the cavity 26.
[0040]
In the present 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 not compressed by the pressure of the air filled in the tire. No. As a result, the weight can be reduced by using gas as the balance fluid.
[0041]
Next, 2nd Embodiment of the wheel for tires of this invention is described according to FIG.
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0042]
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. Yes. These cavities 40 and 42 are filled with water 28 as a balance fluid. The water 28 is mixed with a predetermined amount of iron powder 30 as a diffuser having a specific gravity greater than that of the water 28.
[0043]
Therefore, in the present embodiment, by adjusting the cross-sectional shape and cross-sectional area of each cavity 26, 40, 42 by dividing the filling portion into a plurality along the wheel width direction by the cavities 26, 40, 42, The water 28 and the iron powder 30 in each of the cavities 26, 40, and 42 can be made different amounts, and the accuracy of balance correction is improved.
[0044]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, as shown in FIG. 6, the wheel 10 may be configured to include two cavities, a cavity 40 and a cavity 42.
[0045]
In each embodiment, the water 28 is used as the balance fluid. However, the balance fluid is not limited to the water 28, and a gas such as air, a liquid such as water or oil, preferably a gel-like liquid with low flow resistance. May be used.
[0046]
Moreover, in each embodiment, although the iron powder 30 as a diffuser with larger specific gravity than a balance fluid was used, the diffuser with larger specific gravity than a balance fluid is not limited to the iron powder 30, and sand iron, stainless steel powder, sand, etc. Natural materials or other materials that oxidatively decompose in air may be used. Furthermore, it is not limited to a granular material and powder, You may use a gel-like body and a liquid.
[0047]
Moreover, in each embodiment, although the hemispherical convex part 32 as a stirring means was formed, a stirring means is not limited to the hemispherical convex part 32, A recessed part, a stirring plate, etc. may be sufficient. Further, the stirring means may be provided on one, a plurality, or all of the outer inner peripheral surface 26A, the inner inner peripheral surface 26B, and the inner peripheral side surface 26C of the cavity 26 as a filling portion. However, since the iron powder 30 is effectively diffused, the outer peripheral surface 26A of the cavity 26 is preferably provided on the outer peripheral surface 26A.
[0048]
【The invention's effect】
The tire wheel according to the first aspect of the present invention includes a ring-shaped filling portion formed in the rim portion and extending in the circumferential direction of the rim, a balance fluid filled in the filling portion, and a predetermined amount mixed in the balance fluid. also possess a large diffusion of gravity, and since the inner peripheral surface of the filling portion is provided with a stirring means for stirring the balance fluid balance is required to correct the smaller the unbalance correction amount of a tired wheel The amount of weight can be reduced, and the balance weight waste generated at the time of rim assembly and rim assembly can be reduced. Moreover, it has the outstanding effect that troubles, such as solidification of a diffuser, do not generate | occur | produce. Moreover, it has the outstanding effect that unbalance correction at the time of rotation of a wheel with a tire is completed in a short time.
[0050]
According to a second aspect of the invention, a tire wheel according to claim 1 wherein, the filling part extends in the rim width direction, since the both end portions reaches up to the vicinity of the rim width direction end portions, according to claim 1, wherein In addition to the effect, it has an excellent effect of improving the balance correction effect.
[0051]
According to a third aspect of the present invention, in the tire wheel according to the first or second aspect , since the filling portion is divided into a plurality along the rim width direction, the effect according to the first or second aspect is provided . In addition, it has an excellent effect of improving the accuracy of balance correction.
[0052]
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 has a filling port and an air vent for filling the balance fluid and the diffuser. Therefore, in addition to the effect according to any one of claims 1 to 3, having an excellent effect that the filling operation is smoothly performed.
[0053]
According to a fifth aspect of the present invention, in the tire wheel according to any one of the first to fourth aspects, the surface of the filling portion facing the rim outer peripheral side is parallel to the wheel rotation axis in the rim width direction. because it has the excellent effect that claim 1 in addition to the effects according to any one of claims 4, diffuser can be prevented biased to one side of the rim width direction.
[0054]
According to a sixth aspect of the present invention, in the tire wheel according to any one of the first to fifth aspects, the balance fluid is a gas, and therefore, according to any one of the first to fifth aspects. In addition to the effects described above, the use of gas has an excellent effect of reducing weight.
[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 sectional side 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 cross-sectional side view showing a filling portion during wheel rotation of the tire wheel according to the first embodiment of the present invention.
FIG. 5 is a schematic cross-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 (stirring means)
40 cavity (filling part)
42 Cavity (filling part)

Claims (6)

A ring-shaped filling portion formed in the rim portion and extending in the circumferential direction of the rim;
A balance fluid filled in the filling portion;
A diffuser mixed in a predetermined amount in the balance fluid and having a greater specific gravity than the balance fluid;
Have a tire wheel to the inner circumferential surface of the filling portion, characterized in that the agitating means for agitating the balance fluid is provided. The tire wheel according to claim 1, wherein the filling portion extends in the rim width direction, and both end portions reach the vicinity of both end portions in the rim width direction . The tire wheel according to claim 1, wherein the filling portion is divided into a plurality along the rim width direction . Tire wheel according to any one of claims 1 to 3, characterized in that it comprises a filling port and the air vent port for filling the balance fluid and diffuser to the filling unit. The filling unit, a tire wheel according to any one of claims 1 to 4, wherein the surface facing the rim outer peripheral side is parallel to the wheel rotation axis to the rim width direction. The balance fluid tire wheel according to any one of claims 1 to claim 5, characterized in that a gas.

Images