JP2004217061A - Vehicle wheel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle wheel in which a balance weight is accurately and properly attachable at a predetermined position while expanding the versatility by eliminating the need for setting the shape of the balance weight depending on the wheel shape. <P>SOLUTION: The vehicle wheel 11 is so configured that an outer rim flange 22 of a rim 21 is formed integrally with the periphery of a disk 31. A projection 24 is formed on an end at the vehicle outer side on a rim back face 62. A groove 25 is formed all around the circumference on the vehicle inner side of projection 24. A balance weight attachment area A is set between the projection 24 and the groove 25. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle wheel that is applied to a vehicle and has a rim portion and a disk portion formed integrally.
[0002]
[Prior art]
Since the rotational balance of the wheels mounted on the vehicle has a considerable effect on the running performance of the vehicle, generally a balance weight of a predetermined weight is hung on the surface rim flange of the rim to adjust the rotational balance. are doing. However, when the balance weight is hung on the surface rim flange of the rim portion, the balance weight is exposed on the surface of the wheel, so that it comes into contact with peripheral objects and becomes difficult to handle, or appearance quality is deteriorated. . Therefore, a technology for adjusting the rotational balance by bonding the balance weight to the inner peripheral surface of the rim portion of the wheel has been proposed in, for example, Patent Document 1 shown below.
[0003]
[Patent Document 1]
JP 10-288245 A
The "vehicle wheel" described in Patent Document 1 has an arc-shaped positioning wall at the corner between the disk portion and the well portion on the back side of the rim portion, and the balance weight is attached to the positioning wall with an adhesive tape. Is positioned and fixed. Therefore, since the balance weight is not exposed on the disk surface, the balance weight does not come into contact with the surroundings, so that the handling is simplified, the appearance quality is not deteriorated, and the balance weight is positioned and fixed along the positioning wall. Therefore, the fixed position can be set accurately.
[0005]
[Problems to be solved by the invention]
In the above-described conventional vehicle wheel, an arc-shaped positioning wall is provided on the back side of the rim portion, and a balance weight is adhered along the positioning wall. Therefore, the end of the balance weight must be formed to have the same shape as the positioning wall so that the balance weight properly matches the positioning wall. However, the shape of the wheel varies from company to company, and there is a problem in that when the balance weight is set for each wheel, the versatility is reduced and the manufacturing cost is increased.
[0006]
The present invention solves such a problem, and enables the balance weight to be accurately and properly mounted at a predetermined position, and it is not necessary to set the shape of the balance weight according to the shape of the wheel. It is an object of the present invention to provide a vehicle wheel with improved performance.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, in the vehicle wheel according to the first aspect of the present invention, the periphery of the disk portion is integrally formed on the outer surface of the rim flange portion of the vehicle outside the vehicle. A mark portion is provided on the inside of the vehicle over the entire circumference, and a balance weight mounting area is set between the vehicle outside end portion on the rear surface of the rim portion and the mark portion.
[0008]
Therefore, by setting the balance weight attachment area between the end of the rim part back surface and the mark part, the balance weight can be easily attached to this balance weight attachment area, and accurately mounted at an appropriate position. Further, the balance weight may be simply attached without being attached to the positioning wall or the like, and it is not necessary to set the shape of the balance weight according to the shape of the wheel, so that versatility can be improved.
[0009]
In the vehicle wheel according to the second aspect of the present invention, the balance weight is bonded to the balance weight mounting area by the bonding means, and the surface roughness of the balance weight mounting area is set lower than other areas. Therefore, the balance weight can be firmly bonded to the balance weight mounting region having a low surface roughness, and the adhesiveness of the balance weight can be improved.
[0010]
In the vehicle wheel according to the third aspect of the invention, the surface roughness of the balance weight mounting area is set to 6.3 μm or less. Therefore, the balance weight can be adhered to the balance weight mounting region having a surface roughness of 6.3 μm or less without any gap, and the adhesion of the balance weight can be further improved.
[0011]
In the vehicle wheel according to the fourth aspect of the invention, the mark portion is a groove. Therefore, the mark portion can be formed relatively easily on the rear surface of the rim portion, and the mark portion is formed as a recessed groove, so that even if a part of the balance weight is mounted overlapping this groove, the balance weight can be formed. There is no gap between the flat surface and the back surface of the rim portion, and it is possible to prevent the balance weight from dropping due to improper mounting.
[0012]
In the vehicle wheel according to the fifth aspect of the present invention, the groove is formed on the rear surface of the rim portion by post-processing, and the balance weight mounting area is set so that the distance to the wheel center becomes smaller as going toward the outside of the vehicle. . Therefore, by forming the rim portion into a conical shape so as to expand toward the inside of the vehicle, a tool can be easily inserted from the back side of the wheel, and a groove can be easily formed on the back surface of the rim portion by post-processing.
[0013]
In the vehicle wheel according to the sixth aspect of the present invention, the protrusion is formed over the entire periphery of the rear end of the vehicle on the rear surface of the rim. Therefore, the balance weight mounting area is set between the projection and the mark part, and the balance weight mounting area can be clarified to improve workability, and the balance weight mounted on the back surface of the rim part can be improved. Is concealed by the protruding portion and is difficult to see from the front surface side of the wheel, so that the appearance quality can be improved.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0015]
FIG. 1 is a cross-sectional view of a main part of a vehicle wheel according to an embodiment of the present invention, showing a state where a balance weight is attached, FIG. 2 is a front view of a rim portion showing an attachment state of a balance weight, and FIG. FIG. 4 schematically shows a balance weight of the vehicle wheel of FIG.
[0016]
In this embodiment, as shown in FIG. 3, the vehicle wheel 11 is made of aluminum, and a cylindrical rim portion 21 and a disc-shaped disk portion 31 are integrally formed, and a rubber-made outer portion is formed. The tire 41 can be mounted.
[0017]
That is, the rim 21 has a rim surface 61 formed on the outer periphery of the wheel 11 and an outer rim flange 22 formed on the outer end of the vehicle, while a rim back 62 is formed on the inner periphery of the wheel 11. As well as being formed, an inner rim flange portion 23 is formed at the vehicle inner end. On the other hand, the disk portion 31 is provided with a hub portion 32 in the center, an axle hole 33 is formed in the center of the hub portion 32, and a plurality of bolt holes 34 are formed around the axle hole 33. A plurality of windows 35 are formed on the outer periphery of the hub 32. The outer rim flange portion 22 of the rim portion 21 is integrally connected to the peripheral edge of the disk portion 31.
[0018]
As shown in detail in FIGS. 2 and 3, the rim portion 21 has a protrusion 24 projecting radially inward of the wheel 11 from the outer rim flange portion 22 on the outer end of the vehicle on the rim back surface 62. It is formed over the circumference. The rear surface of the rim portion 21 is set so that the distance to the center of the wheel 11 decreases as going toward the outside of the vehicle, and the rim portion 21 has a conical shape so as to expand toward the inside of the vehicle. ing.
[0019]
A groove 25 as a mark portion is continuously provided over the entire periphery of the rim portion rear surface 62 on the outer side of the vehicle, that is, on the vehicle inner side of the projection portion 24. A balance weight attachment area A for adhering the balance weight 51 is set between the groove 25 and the groove 25. The balance weight mounting area A is set to have a lower surface roughness than other areas so that the balance weight 51 is securely bonded. In practice, the surface roughness of the balance weight mounting area A is Ra = 6.3 μm or less. The surface roughness Ra is the "center line average roughness" obtained by folding the cross-sectional curve upward from the center line and dividing the area above the center line by the measured length.
[0020]
As shown in FIG. 4, the balance weight 51 is an iron-made adhesive type, and as shown in FIG. 4, a plurality of (six in this embodiment) thin plate blocks 52 are connected by connecting portions 53 to form a long shape. Is adhered to the adhesive tape 54. In this case, one block 52 weighs 1 gram, and can be used by being cut from the connecting portion 53 as necessary.
[0021]
The inner rim flange 23 of the rim 21 is provided with a recess 26 continuously over the entire circumference, and a clip-type balance weight 61 can be detachably attached to the recess 25.
[0022]
Since the wheel 11 configured as described above is formed by casting and forming an aluminum alloy by a die casting method, as shown in FIG. 3, the rim portion 21 has a conical shape so as to expand toward the inside of the vehicle. A cutting tool (not shown) is inserted from the back side of the wheel 11 to finish the rim portion rear surface 62 by cutting. In this case, as described above, the balance weight mounting area A is finished so as to have a surface roughness of Ra = 6.3 μm or less, and the other portions have a surface roughness of Ra = 12.5 μm or less. Finish processing. Then, at this time, the groove 25 is cut in the rim portion rear surface 62.
[0023]
The wheel 11 manufactured as described above is fastened to the axle of the vehicle after the rubber tire 41 is mounted on the outside of the rim portion 21, and the rotational balance is adjusted using the balance weights 51 and 61. . At this time, as shown in FIGS. 1 and 2, the worker may attach the balance weight 51 along the groove 25 so that the balance weight 51 enters the balance weight mounting area A set on the back surface of the rim portion 21. The work of mounting the balance weight 51 can be easily performed.
[0024]
In addition, since the balance weight 51 can be cut from the connecting portion 53 as needed, the balance weight 51 can be attached to a predetermined position by a necessary weight. Further, the balance weight 61 is also attached to the inner rim flange portion 23 of the rim portion 21 to adjust the rotational balance.
[0025]
As described above, in the vehicle wheel of the present embodiment, the wheel 11 is formed by integrally forming the peripheral edge of the disk portion 31 with the rim outer rim flange portion 22, and the vehicle outer end portion of the rim rear surface 62. A groove 25 is formed over the entire circumference on the vehicle inside from the protrusion 24, and a balance weight mounting area A is set between the protrusion 24 and the groove 25.
[0026]
Therefore, when the rotational balance of the vehicle wheel 11 is adjusted, the balance weight 51 may be mounted on the balance weight mounting area A on the rim rear surface 62, and the balance weight 51 is easily and accurately mounted at an appropriate position. In addition, the balance weight 51 can be simply attached without being attached to the positioning wall, etc., so that the workability of mounting the balance weight 51 can be improved, and the balance weight can be adjusted according to the shape of the wheel. There is no need to set the shape of the weight, and the versatility of the balance weight 51 can be improved. At this time, by mounting the balance weight 51 along the groove 25 that defines the balance weight mounting area A, even if a part of the balance weight 51 is mounted so as to overlap with the groove 25, the plane of the balance weight 51 and the rim are mounted. Since no gap is formed between the balance weight 51 and the rear surface 62, it is possible to prevent the balance weight 51 from falling off due to improper mounting.
[0027]
Further, the surface roughness of the balance weight mounting area A is set to Ra = 6.3 μm or less, and is set lower than the peripheral surface roughness, so that the balance weight 51 can be brought into close contact with the rim portion 21 and firmly adhered. As a result, the adhesiveness of the balance weight 51 can be improved. After the balance weight 51 is applied to the rim portion 21 of the wheel 11, the balance weight 51 is concealed by the projection 24 and becomes less visible from the surface side of the wheel 11, thereby improving the appearance quality.
[0028]
In the above-described embodiment, the groove 25 is formed on the back surface of the rim portion 21 as a mark portion over the entire circumference. On the other hand, although the balance weight 51 is formed into an elongated shape by connecting the six thin plate blocks 52, any shape may be used as long as the balance weight 51 can be attached to the balance weight mounting area A of the rim portion 21. Good.
[0029]
【The invention's effect】
As described above in detail in the embodiment, according to the vehicle wheel of the first aspect of the invention, the periphery of the disk portion is integrally formed on the outer side of the rim flange portion of the vehicle outside the vehicle, and the rim portion rear surface is formed. The mark portion is provided on the entire inner side of the vehicle from the outer end of the vehicle, and the balance weight mounting area is set between the vehicle outer end on the rear surface of the rim and the mark portion. It can be easily and accurately mounted at an appropriate position, and it is sufficient to simply attach the balance weight without attaching it to the positioning wall, etc., and it is not necessary to set the shape of the balance weight according to the shape of the wheel And the versatility can be improved.
[0030]
According to the vehicle wheel of the invention of claim 2, the balance weight is bonded to the balance weight mounting area by the bonding means, and the surface roughness of the balance weight mounting area is set to be lower than other areas. It is possible to firmly adhere to the balance weight mounting region having a low surface roughness, and it is possible to improve the adhesiveness of the balance weight.
[0031]
According to the vehicle wheel of the third aspect of the present invention, since the surface roughness of the balance weight mounting area is set to 6.3 μm or less, there is no gap in the balance weight mounting area having the surface roughness of 6.3 μm or less. Adhesion can be performed, and the adhesion of the balance weight can be improved.
[0032]
According to the vehicle wheel of the fourth aspect of the invention, since the mark portion is formed as a groove, the mark portion can be formed relatively easily on the rear surface of the rim portion, and the mark portion is formed as a recessed groove. Even if a part of the balance weight overlaps with the groove, the gap is not formed between the flat surface of the balance weight and the back surface of the rim portion, and it is possible to prevent the balance weight from dropping due to a poor mounting. .
[0033]
According to the vehicle wheel of the invention of claim 5, the groove is formed on the rear surface of the rim portion by post-processing, and the distance to the wheel center is set to be smaller as the balance weight mounting area goes to the outside of the vehicle. Therefore, by forming the rim portion in a conical shape so as to expand toward the inside of the vehicle, a tool can be easily inserted from the back side of the wheel, and a groove can be easily formed on the back surface of the rim portion by post-processing.
[0034]
According to the vehicle wheel of the sixth aspect of the present invention, since the projection is formed over the entire periphery of the rear end of the vehicle on the rear surface of the rim, the balance weight mounting area is set between the projection and the mark. As a result, the work area can be improved by clarifying the balance weight mounting area, and the balance weight mounted on the rear surface of the rim portion is concealed by the projection, so that it is difficult to see from the front side of the wheel, and the appearance quality is improved. be able to.
[Brief description of the drawings]
FIG. 1 is a sectional view of a main part of a vehicle wheel according to an embodiment of the present invention, showing a mounting state of a balance weight in the wheel.
FIG. 2 is a front view of a rim portion showing a mounting state of a balance weight.
FIG. 3 is a longitudinal sectional view of the vehicle wheel of the embodiment.
FIG. 4 is a schematic view of a balance weight.
[Explanation of symbols]
11 Vehicle Wheel 21 Rim 22 Outer Rim Flange 23 Inner Rim Flange 24 Projection 25 Groove (Mark)
31 Disc portion 41 Tire 51 Balance weight 61 Rim surface 62 Rim back surface

Claims (6)

In a vehicle wheel in which a peripheral portion of a disk portion is integrally formed on the outer side of a vehicle at a surface rim flange portion of a rim portion, a mark portion is provided on the entire inner side of the vehicle from an outer end portion of the vehicle on a rear surface of the rim portion, and the rim is provided. A wheel for a vehicle, wherein a balance weight mounting area is set between an outer end portion of the rear surface of the vehicle and the mark portion. 2. The vehicle wheel according to claim 1, wherein the balance weight is bonded to the balance weight mounting area by bonding means, and the balance weight mounting area is set to have a lower surface roughness than other areas. And vehicle wheels. 3. The vehicle wheel according to claim 2, wherein a surface roughness of the balance weight mounting area is set to 6.3 μm or less. The vehicle wheel according to any one of claims 1 to 3, wherein the mark portion is a groove. 5. The vehicle wheel according to claim 4, wherein the groove is formed on the rear surface of the rim portion by post-processing, and the distance to the wheel center decreases as the balance weight mounting area goes to the outside of the vehicle. A vehicle wheel, which is set to be: The vehicle wheel according to any one of claims 1 to 5, wherein a protruding portion is formed on an outer end of the vehicle on the rear surface of the rim portion over the entire circumference.

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