JP3395113B2 - Wheel with unbalanced amount adjusted - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel used in a vehicle such as an automobile and to which a tire is mounted, and more particularly to a wheel having an unbalance amount adjusted.

[0002]

2. Description of the Related Art A tire / wheel assembly used in a vehicle such as an automobile is composed of a wheel and a tire assembled to the wheel. The wheel is an annular rim on which the tire is assembled, and a wheel is welded to the rim and bolts or the like. A disk fixed to the hub of the axle of the vehicle. Here, the tire has a strength distribution in the thickness direction along the circumference thereof, and the wheel also has a manufacturing error in the radial direction thereof.
By combining a portion having the highest tire strength (RFV point) and a portion having the smallest wheel radius (RRO point), the entire tire wheel assembly is approximated to a perfect circle, and the tire wheel assembly is rotated in the vertical direction. It is necessary to prevent the vibration. By the way, the vehicle wheel and the tire are not statically balanced, which is the balance of the weight distribution in each static state,
Each wheel or tire has a different weight distribution, and the weight is lighter than other places, and conversely, the weight is heavier than other places. ing. Therefore, because the tire wheel assembly as a whole cannot be statically balanced by simply combining the tire RFV point and the wheel RRO point,
Check the balance of the tire wheel assembly rotates the tire wheel assembly balance measuring device, by performing a balance adjustment work for attaching the balance weight and lead to the rim if the wheel has not been balanced, as a whole a tire wheel assembly I was adjusting the static balance of. Here, the amount of balance weight and the mounting position have been determined by measuring the unbalance amount of the tire wheel assembly and its distribution position with a balance measuring device.

[0003]

However, performing the balance adjustment work for each tire wheel assembly as described above causes an increase in the number of steps in the assembly process of the tire wheel assembly. There has been a demand for more efficient assembly balancing work . Therefore, the problem to be solved by the present invention, easily focused in unbalanced static weight distribution of the wheel, and unbalance amount that can streamline the balance adjustment of the tire wheel assembly by securely adjusting <br/> is to provide a tuned wheel.

[0004]

Means for Solving the Problems] to resolve the above problems
Therefore, in the present invention, in a wheel including a disk-shaped disk capable of fixing a hub of an axle of a vehicle and an annular rim fixed to a peripheral edge of the disk, a tire is attached to a center of the disk. To provide a wheel having an opening in the disc for forming at a position remote from
It

When the opening is formed in the disk as described above, the focus position of the wheel can be formed at a predetermined position depending on the size of the opening and the arrangement interval. Therefore, it is possible to simplify the work of checking the important points of the wheel when assembling the tire wheel assembly, so that the balance adjustment
It is possible to improve the work efficiency of the work. By forming the openings, the weight of the disc is reduced by the size of the openings, but when the openings are formed at equal intervals along the circumferential direction of the disc, the weight of each opening is increased. The weight balance of the disc does not change as the reductions cancel out. However, if the size of the openings, the arrangement interval, or the like is changed, the weight balance of the disc is lost, so that a region having a lighter weight or a region having a heavier weight than other places is formed. That is, by selecting the size of the openings and the arrangement interval, it is possible to form the weight, which is a relatively heavy portion, at a desired position. Further, when an air valve for inflating the tire is attached to a position corresponding to the thus-formed emphasis position, it becomes easy to confirm the emphasis position of the wheel.

The invention according to claim 1 of the present invention is
A disk-shaped disc that can be fixed to the hub of the vehicle axle, and
The rim is fixed to the peripheral edge of the disc and is used to mount the tire.
In the wheel equipped with,
Since it is formed at a position away from the center of the disc,
A plurality of openings formed at equal intervals in the circumferential direction of the disc.
Line segment connecting the air valve mounting hole and the center of the disc
The opening area of the upper opening is the opening area of the other opening.
And the unbalance amount is 20 to 50 g.
It is characterized in that it is configured as follows . In such a wheel, the area where the opening having the smaller diameter is formed is heavier by the difference in the opening area than the other openings, so that the area where the opening having the smaller diameter is formed , that is, the wheel is focused on the air valve mounting hole side. Can be formed. Here, when the difference between the sizes of the openings is small, the weight of the wheel can be adjusted without impairing the external shape.

Further, the invention according to claim 2 of the present invention is
A disk-shaped disc that can be fixed to the hub of the vehicle axle, and
The rim is fixed to the peripheral edge of the disc and is used to mount the tire.
In the wheel equipped with,
Since it is formed at a position away from the center of the disc,
A plurality of openings formed at equal intervals in the circumferential direction of the disc.
Line segment connecting the air valve mounting hole and the center of the disc
The distance between the centers of the openings that are adjacent to each other with the
It is longer than the center-to-center distance of the matching openings, and
It is characterized in that the amount of liquid is 20 to 50 g.
To do. In such a wheel, the area where the opening with the long center-to-center distance is formed becomes heavier than the other areas, so the area where the opening with the long center-to-center distance is formed , that is, the air bar
The weight of the wheel can be located on the side of the lube mounting hole .

The invention according to claim 3 of the present invention is
A disk-shaped disc that can be fixed to the hub of the vehicle axle, and
The rim is fixed to the peripheral edge of the disc and is used to mount the tire.
In the wheel equipped with,
Since it is formed at a position away from the center of the disc,
A plurality of openings formed at equal intervals in the circumferential direction of the disk
From the center of the disc to the air valve mounting hole
Formed at equal intervals on the circumference of a eccentric circle
Balanced amount is 20-50g
Is characterized by. In such a wheel, the openings are formed on the circumference of a circle whose center is located at a position deviated from the center of the disc, thereby forming a region where the disc has many openings and a region where there are few openings. Area where the number of openings is small , that is, the air valve mounting hole
The emphasis can be placed on the side .

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, a wheel 1 of the present embodiment is used by mounting a tire 2 to form a tire wheel assembly 3 and fixing it to a hub of an axle of a vehicle. Here, as shown in FIG. 1 and FIG. 2, the wheel 1 is fixed to a disc-shaped disc 6 having a center hole 5 for fixing a hub at its center and a peripheral edge 6a of the disc 6 by welding or the like. And a cylindrical rim 7. Also, the rim 7 is
An air valve 8 for introducing compressed air into the tire 2 can be inserted. In the present embodiment, the disc 6 and the rim 7 are described as separate bodies,
It is also possible to integrally manufacture it by casting or the like.

As shown in FIG. 2, both ends of the rim 7 are erected to form a rim flange 9, and the rim flange 9 and a bead seat portion 10 inside the rim flange 9.
The tire 2 is assembled to the wheel 1 by fitting the bead portion of the tire 2 to the wheel. Further, the rim 7 is formed with a well portion 11 having a concave shape toward the rotation center axis C, and an air valve 8 is attached to a side portion of the well portion 11.

As shown in FIGS. 1 and 3, the disk 6
Has an insertion hole 13 formed near the center hole 5 for fastening the hub with a nut. Also, disk 6
A plurality of openings 14 are formed on the peripheral edge 6a side. In the present embodiment, the opening 14 is formed by the disc 6
Is a circular hole penetrating through, and is formed such that the centers of the openings are arranged at equal intervals on the circumference of a circle C1 centered on the center point CP of the disk 6. Here, the equal intervals mean that the distances between the centers of the adjacent openings 14 are the same when measured along the circumference of the circle C1. In addition,
The opening 14 can be used as a cooling hole for discharging frictional heat generated in a disc brake provided adjacent to the hub or as a decorative hole.
Further, the shape of the opening 14 is not limited to a round hole, and may be any shape such as a triangle or a trapezoid, and the size thereof may be any size.

The opening 14 shown in FIG. 3 can be classified into a large diameter opening 14a having a large opening diameter and a small diameter opening 14b having an opening diameter smaller than that of the large diameter opening 14a. In FIG. 3, the small diameter opening 14b has a center point CP.
Is located on an imaginary line segment A connecting the air valve mounting hole 8a with the air valve mounting hole 8a, and the remaining opening 14 is a large diameter opening 14a.
By making the opening 14 on the imaginary line segment A the small-diameter opening 14b, the weight of this region can be made heavier by the smaller opening area than the weight of the other regions. That is, FIG.
Comparing the vicinity of the large-diameter opening 14a on the virtual line segment B obtained by extending the virtual line segment A upward from the center point CP of the The area on the side of the small diameter opening 14b becomes heavier due to the difference in area. On the other hand, in the other regions, the pair of openings 14 facing each other have the same opening area, so that the weight balance is not lost. Therefore, the weight balance of the disk 6 as a whole shifts to the lower side of FIG. 3, that is, to the air valve mounting hole 8a side, so that the weight of the disk 6 is formed on the imaginary line segment A. The opening diameters of the large-diameter opening 14a and the small-diameter opening 14b may be determined so that the difference in opening area between the large-diameter opening 14a and the small-diameter opening 14b causes a weight difference (unbalance amount) of 20 to 50 g. desirable.

Here, the rim 7 is welded to the disc 6 and the air valve 8 is further fixed to the wheel 1
However, since the rim 7 has a good weight balance in general, welding of the rim 7 does not cause the disc 6 to be decentered. Further, since the air valve 8 is mounted in the same direction as the emphasis point when viewed from the center point CP of the wheel 1, it plays a role of making the emphasis point position clearer. The center point CP
By matching the formation position of the focused position seen from the formation position of the air valve mounting hole 8a of the disk 6, the focused position can be easily confirmed during the assembly work of the wheel 1 and the tire wheel assembly 3. .

Further, when such a wheel 1 is used, it is possible to specify the position of the emphasis point and the amount of unbalance in advance, and further, it is possible to reduce the variation in the emphasis position among the wheels 1, so that the tire wheel. Balance adjustment work in the assembly work of the assembly 3
The work can be simplified. For example, it is possible to cancel the unbalance amount between the wheel 1 and the tire 2 simply by matching the mounting position of the air valve 8 of the wheel 1 and the light point of the tire 2. Further, the wheel 1 has a small radius (RRO point) and the tire 2 has high strength (RFV point).
In this case, even if the static balance of the tire wheel assembly 3 as a whole is destroyed by combining the RRO point and the RFV point, the important point position and the unbalance amount of the wheel are known, so that the balance is balanced.
And the required amount of the balance weight required to adjust, easily mounted position, and, because it is possible to quickly determine, bar in the assembly work of the tire wheel assembly 3
The efficiency of lance adjustment work can be improved.

It should be noted that the small-diameter opening 14b on the imaginary line segment A is the minimum opening area, the large-diameter opening 14a on the imaginary line segment B is the maximum opening area, and the remaining openings 14 are intermediate opening areas. By setting the opening 14 such that the opening area gradually increases from the small diameter opening 14b on the imaginary line segment A to the large diameter opening 14a on the imaginary line segment B, the focus position of the wheel 1 is further clarified. Alternatively, the unbalance amount may be increased. If the formation position of the air valve mounting hole 8a and the formation position of the opening 14 in FIG. 3 do not match,
At least one opening 1 located near the virtual line segment A
By using 4 as the small-diameter opening 14b, the same effect as the above-mentioned effect can be obtained. In this case, when the air valve 8 is mounted later, the weight position of the air valve 8 corrects the weighted position, so that the weighted position deviates from the imaginary line segment A by about ± 20 ° around the center point CP. It may be formed at a position.

Further, the wheel 31 as shown in FIG. 4 can be used for the focus adjustment. In this wheel 31, the center-to-center distance d1 between the openings 14c adjacent to each other across the virtual line segment A is longer than the center-to-center distance d2 of the other openings 14a. Here, the center-to-center distances d1 and d2 correspond to the distance when the distance between the centers of the adjacent openings 14a and 14c is measured along the circumference of the circle C1. In the wheel 31 as shown in FIG. 4, since the opening 14 is not formed in the region near the virtual line segment A, it is heavier than the region near the virtual line segment B having the opening 14a. On the other hand, in the other regions, the setting opening 1 having the same opening area is provided.
Since 4a is formed at a position facing the center point CP, the weight balance is not lost. Therefore, disk 3
The overall weight balance of 6 is on the lower side of FIG. 4, that is,
Since it shifts to the air valve mounting hole 8a side, the weight of the disk 36 is located on the virtual line segment A.

The openings 1 adjacent to each other with a center-to-center distance d2.
The distance between the centers is different for each 4a, and each opening 14
The opening areas of a and 14c may be changed. However, even in these cases, 20 to 50 g in the area of the virtual line segment A
It is desirable to determine the above-mentioned different center-to-center distances or the opening areas of the respective opening portions 14a and 14c so that an unbalance amount of 1 is generated.

Further, as shown in FIG. 5, each opening 14
It is also possible to use the wheels 41 in which e is formed at equal intervals on the circumference of a circle C2 centered on the eccentric point DCP located a predetermined distance above the center point CP of the disk 46.
The openings 14e are arranged at equal intervals along the circumference of the circle C2 and have the same opening area. In the disk 46 of the wheel 41, the emphasis is formed in the direction in which the air valve mounting hole 8a is located.
This is because the eccentricity point DCP is located above the center point CP of the disk 46 in FIG. 5, so that more openings 14e are formed above the disk 46. In this case, the weight distribution is unbalanced in a direction other than the vertical direction, but the weight on the lower side becomes heavy as a whole, so that the weight is placed in the direction in which the air valve mounting hole 8a is located. As long as the unbalance amount of the formed emphasis is within the range of 20 to 50 g, the opening area of each opening 14e and the center-to-center distance between the adjacent openings 14e can be arbitrarily set, as described above. Is.

The present invention can be widely applied without being limited to the above embodiments. For example,
A non-penetrating recess having the same diameter as the opening 14 may be formed on the virtual line segment A of the wheel 31 of FIG. While the emphasis is formed on the virtual line segment A, it is possible to give the appearance that the openings 14 are formed at equal intervals. Further, only the shape of the opening 14b located on the virtual line segment A can be changed. In this case, the shape of the opening 14b needs to be such that the opening area is substantially smaller than the shapes of the openings 14a in the other regions. Further, a spoke or a plate-shaped member is provided so as to traverse or longitudinally cross the opening 14b, a wire mesh is provided in the opening of the opening 14b, or punching metal is inserted to reduce the weight of the area on the virtual line segment A. Substantially more than other regions may be increased. Further, when welding the disc 6 and the rim 7, the focus position and the unbalance amount of the wheel 1 can be adjusted by shifting the focus position of the disc 6 and the position of the air valve mounting hole 8a of the rim 7, or the focus of the disc 6 and the rim 7 can be adjusted. The air valve mounting holes 8a of No. 7 may be arranged at the opposite positions to cancel out the unbalance amount.

[0020]

According to the present invention, the opening area of a specific opening is made smaller than that of another opening, the distance between the centers of adjacent openings is changed, and the center of the disk and the opening are formed. It is possible to easily and surely adjust the priority position and the unbalance amount of the wheel by shifting the center of the circle formed.

[Brief description of drawings]

FIG. 1 is a perspective view of a balanced wheel according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the wheel shown in FIG.

FIG. 3 is a front view of the wheel shown in FIG.

FIG. 4 is a front view of a balanced wheel of another embodiment of the present invention.

FIG. 5 is a front view of a balanced wheel of another embodiment of the present invention.

[Explanation of symbols]

1,31,41 wheels 4 center hall 6 discs 7 rims 8 air valves 8a Air valve mounting hole 14,14c, 14e Opening 14a Large diameter opening (opening) 14b Small diameter opening (opening) CP center point DCP eccentric point d1, d2 center distance

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shiro Sato 1-4-1 Chuo, Wako-shi, Saitama Inside Honda R & D Co., Ltd. (72) Inventor Hidemi Ichinose 1907, Hirata-cho, Suzuka-shi, Mie Suzuka Seisakusho Co., Ltd. (56) Reference JP-A-1-95903 (JP, A) JP-A-57-80901 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60B 3 / 00 B60B 13/00 B60B 23/00

Claims (3)

(57) [Claims] 1. A wheel comprising a disc-shaped disc that can be fixed to a hub of an axle of a vehicle, and a rim that is fixed to a peripheral portion of the disc and is used for assembling a tire. In order to form them at distant positions, among the plurality of openings formed at equal intervals in the circumferential direction of the disk , the air valve mounting hole and the
Opening surface of the opening located on the line connecting the centers of the disks
The product is smaller than the opening area of the other openings, and the
A wheel having an adjusted unbalance amount, which is configured to have a load amount of 20 to 50 g . 2. A wheel provided with a disk-shaped disc that can be fixed to a hub of an axle of a vehicle, and a rim that is fixed to a peripheral portion of the disc and is used for assembling a tire. In order to form them at distant positions, among the plurality of openings formed at equal intervals in the circumferential direction of the disk , the air valve mounting hole and the
The openings adjacent to each other with a line segment connecting the centers of the disks interposed therebetween.
The center-to-center distance of the other adjacent openings
Longer than that, the unbalance amount will be 20-50g
A wheel whose unbalance amount is adjusted, which is characterized by being configured as described above . 3. A wheel comprising a disc-shaped disc that can be fixed to a hub of an axle of a vehicle, and a rim that is fixed to a peripheral portion of the disc and is used for assembling a tire, wherein a focus position of the wheel is from a center of the disc. In order to form them at positions distant from each other, a plurality of openings formed at equal intervals in the circumferential direction of the disk are provided from the center of the disk.
A Circumference of an eccentric circle separated from the valve mounting hole in the opposite direction
Formed at equal intervals on the top and the unbalance amount is 20-50g
A wheel with an adjusted amount of unbalance characterized by being configured as follows .