JP3425697B2 - Balanced wheels - 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 of an automobile or the like whose static balance is adjusted.

[0002]

2. Description of the Related Art In a wheel (tire wheel assembly) of an automobile or the like, it is necessary to balance the circumference of the rotation axis and the direction of the rotation axis with the tire and the wheel assembled. The unbalanced state around the rotation axis is called static unbalance. If the static unbalance is not achieved, vertical vibration occurs during traveling. Further, a state in which the rotational axis direction is not balanced is called dynamic unbalance. If the dynamic axis is not balanced, vibrations in the vertical and horizontal directions occur, which causes steering shimmy and the like.

By the way, conventionally, the following method has been used to balance the tire wheel assembly.
First, the wheel and the tire are assembled by aligning the radial force variation (RFV) direction, which is a portion having high strength in the radial direction of the tire, with the direction of the lowest point having the smallest diameter in the circumferential direction of the wheel. Then, the light point, which is the lightest direction in the circumferential direction of the tire, and the weight, which is the heaviest direction in the circumferential direction of the wheel, do not usually coincide with each other, and therefore it is necessary to add a balance weight. In order to determine the position where this balance weight is added, the assembled tire / wheel assembly is put on an unbalance measuring device, and the direction and amount of the unbalance are measured. Then, a balance weight suitable for the direction and amount is attached to the outer circumference of the side surface of the wheel to achieve balance, and the measurement of the unbalance and the positioning of the balance weight are repeated until the unbalance amount becomes equal to or less than a certain amount.

[0004]

However, since the balancing work described above is a multi-step and complicated work, a very large number of man-hours are required. Also, because the balance weight is attached to the wheel, the appearance of the wheel is impaired. Therefore, it is desirable that the balance weight is as small as possible, and it is desirable not to attach it, and even if it is necessary, it is desirable to be able to specify the attachment position without measuring balance. Also, since the wheel tends to focus on the direction in which the air valve is located, balance weights may be attached using the air valve as a guide.However, with conventional wheels, the focus is not necessarily located in the direction of the air valve. At present, the position of is not a sufficient guideline for emphasis. Therefore, an object of the present invention is to provide a wheel whose balance is adjusted, improve the appearance of the wheel, or improve the efficiency of assembling the wheel and the tire.

[0005]

In order to solve the above-mentioned problems, the present invention provides a wheel in which a rim and a cup-shaped disc fitted to the inner diameter of the rim are joined to each other. The balance is adjusted by providing the fitting portion with a lightening shape and / or a lightening shape. By doing so, the direction in which the disc is provided with the lightening shape becomes light, and therefore, by providing a desired amount of the lightening shape, a wheel having a desired balance can be obtained. Moreover, in the present invention,
The balance is adjusted by removing or adding meat to the part of the disc that fits with the inner surface of the rim and is hidden from the outside, so the desired balance is achieved without affecting the appearance of the wheel. It can be a tuned wheel. The wheel rim is equipped with an air valve to let air into the tire,
The rim tends to be heavier in the direction of the air valve. Therefore,
Considering the weight balance contribution of the air valve and the air valve mounting hole, it is necessary to adjust the balance of the wheel and the air valve as a whole.

[0006] In the invention of claim 1, rim and, in the wheel formed by joining a cup-shaped disk which is fitted to the inner diameter of the rim, meat in the fitting portion of the disc
A cutout is formed in this fillet shape while providing
Made so was characterized by the direction of direction as the flesh shape of the air valve mounting hole provided in the rim shifted 180 degrees as viewed from the center of the disk. By doing this, unbalance due to the weight of the air valve and meat
Since the imbalance due to the attachment shape is canceled out, the imbalance of the entire wheel can be brought close to zero. As a result, the balance weight added later when assembled with the tire can be reduced, and the appearance of the wheel can be improved. Also, cutouts in the fillet shape part
When the disc and rim are joined by forming
It can be used as a mark to know where the attachment shape part is
It

According to the second aspect of the invention, in a wheel formed by joining a rim and a cup-shaped disc fitted into the inner diameter of the rim, the fitting portion of the disc is fleshed.
A cutout is formed in this fillet shape as well as providing a hook shape
It is allowed, and characterized in that the direction of the air valve mounting hole provided in the rim was matched direction of the flesh shape.
By doing this, the unbalance due to the air valve mounted on the rim and the unbalance due to the lightening or filling shape make the air valve direction relatively heavy. Can be Therefore, the direction of the air valve can be used as a reference for the priority of the wheel, and the work of adding the balance weight can be made more efficient. Also, with meat
By forming a notch in the shape of a tooth,
A mark to know where the fillet shape is when joining the frames
Can be

Incidentally, in the claims, the term "joining" may be any method as long as it can join the rim and the disk without impairing the function of the wheel.
Various known fixing methods such as brazing, bolting, and bonding with an adhesive can be used.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings as appropriate. Figure 1 shows the first
It is a disassembled perspective view of the wheel which concerns on embodiment (reference example) . As shown in FIG. 1, a wheel 1 of the first embodiment (reference example) has a disc 2 that is bolted to an axle ( not shown ) and receives a driving force of the axle, and a tire is fitted to the outer periphery of the wheel 1. The disc 2 and the rim 3 to be welded to each other. The disc 2 is formed by squeezing a rolled steel plate into a cup shape, and the cup-shaped disc surface 2a cools a bolt insertion hole 21 through which a bolt is inserted when fixing it to an axle and a brake located inside the wheel. A ventilation hole 22 and a center hole 23 for aligning the centers of the wheels 1 are provided. Cup-shaped wall surface 2
In b, the shape of the material obtained by punching out a rolled steel plate is left, and the edge thereof is uneven. Among the edges of the wall surface portion 2b, the convex portions are welded portions 24, 24, ... Which are welded to the rim 3. Further, of the edges of the wall surface portion 2b, one of a plurality of portions (four in this embodiment) corresponding to the concave portion,
It has a hollowed out shape compared to other recesses. The wall surface portion 2b is a portion fitted into the inner diameter of the rim 3, and is the fitting portion referred to in the claims. In FIG. 1, an overhead line 25a shown by a chain double-dashed line shows the shape of another recess, and a lightening shape line 25 shown by a solid line shows the above-mentioned hollowed shape.
In short, the disc 2 has a shape in which a part of the edge portion of the non-welded portion is lightened.

FIG. 2 is a plan view of the disc material of the wheel according to the first embodiment (reference example) . As shown in FIG. 2, the disk material 50 has a shape in which the four corners of the blank 52, which is a rolled steel plate cut into a substantially square shape, are cut off in an arc shape. Also, the disc material 50
2 has a shape in which one side on the left side in FIG. 2 is slightly scooped compared to the other side. A portion of the disc material 50 outside the outer peripheral line 54 that is the ridgeline of the outer periphery of the disc 2 is a portion that becomes the wall surface portion 2b when the disc material 50 is squeezed into a cup shape. When the disc material 50 is squeezed into a cup shape to form the disc 2, the arc-shaped portions become the welded portions 24, 24, ... And the scooped-out portions become the lightening shape lines 25. In FIG. 2, the horizontal direction is the rolling direction when the rolled steel sheet is manufactured. Since the rolled steel sheet extends slightly more in the rolling direction than in the perpendicular direction, the blank 52 is cut in the rolling direction slightly shorter than the perpendicular direction.

The rim 3 has a substantially cylindrical shape, and a tire is mounted on the outer peripheral surface thereof. Rim flanges 31 and 31 are provided on both sides at the edge of the rim 3 so that the mounted tire does not come off. Rim flange 3
An air valve mounting hole 32 for mounting an air valve for introducing air into the tire is provided in a part of the outer surface 1 of the automobile. Although the rim 3 itself has a large weight, the product variation is small and the static unbalance amount is small. However, by mounting the air valve in the air valve mounting hole 32, the air valve mounting hole 32 side tends to be heavy after assembly. The present invention can be applied to a wheel in which a rim and a disc are combined, and particularly to a wheel in which the side wall portion of the cup-shaped disc is fitted to the inner diameter of the rim. Therefore, the rim is
Any known rim can be used as long as the discs described above can be fitted and joined.

The wheel 1 is formed by fitting the disc 2 into the inner diameter of the rim 3 and welding the welded portions 24, 24, ... With the inner diameter portion of the rim 3. As shown in FIG. 1, the disc 2 is fitted and welded so that the air valve mounting hole 32 and the lightening shape line 25 are displaced by 180 degrees from the center of the disc 2. Therefore, since the weight of the air valve and the shape of the lightening portion of the lightening shape line 25 are combined so as to be heavy in the air valve direction, the wheel 1 is always attached to the air valve mounting hole 3
The direction of 2 becomes important. In this way, in the wheel 1, since the direction of the priority can be known by using the air valve as a guide, the work of attaching the balance weight can be efficiently performed when the wheel 1 and the tire are assembled.

Next, a second embodiment of the present invention will be described. In the following description, parts that are substantially the same as those in the first embodiment will be assigned the same reference numerals and detailed description thereof will be omitted. Further, in the following embodiments, other examples of the shape of the fitting portion of the disc with the rim will be given, and therefore the explanation will be made mainly using a disc material having a substantially developed shape of the disc.

FIG. 3A is a plan view of the disc material of the wheel according to the second embodiment, and FIG.
FIG. 6 is a perspective view of a wheel disc according to the embodiment. As shown in FIG. 3 (a), the disk material 70 has a shape in which a rolled steel plate is obtained by cutting off the four corners of the blank 52 cut in a substantially square shape in an arc shape.
Of the arcuate shapes, the upper left arcuate arc-shaped welded portion 71 in FIG.
It is located outside the arc 73 of the overhead line corresponding to 24, 24. Therefore, when the disc material 70 is squeezed into a cup-shaped disc 74 as shown in FIG. 3B, the direction of the welded portion 71 is different from that of the other direction.
And the arc 73 is heavier by the weight of the plate. In short, the disc 74 made of the disc material 70 has a shape in which the welded portion 24 is provided with a fillet shape. Welded part 7
A small cutout 78 can be formed in 1 so that it can be used as a mark where the fillet-shaped portion is when joining with the rim. A portion outside the outer peripheral line 75, which is the ridgeline of the outer periphery of the disc, becomes the wall surface portion 2b when the disc material 70 is squeezed to form the cup-shaped disc 74, and the fitting portion with the rim 3 is formed. That is the part.

After the disk material 70 having such a padding shape is drawn into a disk, the disk 74 and the rim 3 are joined by aligning the direction of the padding section with the direction of the air valve mounting hole 32 of the rim 3. Since the imbalance due to the air valve and the imbalance due to the above-mentioned fill-up shape make the direction of the air valve heavy, it is possible to obtain a wheel in which the emphasis is always placed in the direction of the air valve.

On the other hand, if the disc and the rim 3 are joined by combining the direction of the above-mentioned built-in shape and the direction of the air valve mounting hole 32 by 180 degrees, the imbalance due to the above-mentioned built-in shape and the unbalance due to the air valve are caused. These wheels can be offset to provide a wheel with a small amount of unbalance.

Next, a third embodiment (reference example) will be described. In the following description, parts that are substantially the same as those in the first and second embodiments will be assigned the same reference numerals and detailed description thereof will be omitted. FIG. 4A shows the third embodiment.
It is a top view of the disc material of the wheel which concerns on a state (reference example) , (b) is a perspective view of the disc of the wheel which concerns on 3rd Embodiment (reference example) . Disk material 80
Is a rolled steel plate having a shape in which four corners are cut off in an arc shape from a blank 52 cut into a substantially square shape. Of the arcuate shapes, the upper left arcuate welded portion 81 in FIG. 4A is located inside the arcuate 83 corresponding to the other arcuate welded portions 24, 24, 24. Therefore, the direction of the weld 81 is
When 0 is squeezed to form a cup-shaped disc 84 as shown in FIG. 4B, it is lighter than the other directions by the weight of the plate between the welded portion 81 and the arc 83. In short, the disc 84 made of the disc material 80 has a shape in which a part of the welded portion 24 has a lightening shape. If a small cutout 88 is formed in the welded portion 81, it can be used as a mark of where the lightening shape portion is when joining with the rim. The portion outside the outer peripheral line 85 which is the ridgeline of the outer periphery of the disc is the disc material 80.
When it is squeezed into a cup-shaped disc 84,
The wall surface portion 2b serves as a fitting portion with the rim 3.

After the disk material 80 having such a lightening shape is drawn into a disk, the disk 84 and the rim 3 are joined by aligning the direction of the lightening shape portion with the direction of the air valve mounting hole 32 of the rim 3. For example, the unbalance due to the air valve and the unbalance due to the above-mentioned weighted shape are offset to each other, whereby a wheel with a small amount of unbalance can be obtained.

On the other hand, when the disc and the rim 3 are joined by combining the direction of the lightening shape and the direction of the air valve mounting hole 32 by 180 degrees, the imbalance due to the air valve and the unbalance due to the lightening shape can be obtained. Since the balance is combined and the direction of the air valve is made heavier, the wheel can always be placed with the emphasis on the direction of the air valve.

Next, a fourth embodiment (reference example) will be described. In the following description, parts that are substantially the same as those in the first to third embodiments will be assigned the same reference numerals and detailed description thereof will be omitted. FIG. 5 shows the fourth embodiment (see
It is a plan view of a disc material of a wheel according to ( consideration example) ,
FIG. 6 is a front view of a wheel according to the fourth embodiment (reference example) . The disk material 90 has a shape in which four corners of the blank 52, which is obtained by cutting a rolled steel plate into a substantially square shape, are cut off in the shape of an arc to be the welded portion 24.
In FIG. 5, a portion outside the outer peripheral line 95, which is the ridgeline of the outer periphery of the disc 97 shown in FIG. 6, is the wall surface portion 2b of the disc 97, which is a fitting portion with the rim 3.
Further, the disc material 90 has a lightening hole 91 in the upper left portion in FIG. 5 of the fitting portion.

After the disk material 90 having such a lightening shape is drawn on the disk 97, as shown in FIG. 6, the direction of the lightening hole 91 and the direction of the air valve are shifted by an angle α, and the disk 97 is formed. And the rim 3 are welded to each other. When an air valve is mounted on the rim 3, the unbalance of the wheel 98 is a combination of the unbalance of the air valve and the unbalance of the wheel 98. Therefore, in the wheel 98 of the present embodiment, if the unbalance amount of the air valve is represented by the vector v1 and the unbalance amount of the disc 97 by the lightening hole 91 is represented by the vector v2, the unbalance amount of the entire wheel 98 is the vector. vector v that is a combination of v1 and vector b2
It becomes 3 directions and size. Therefore, by appropriately selecting the angle α and the size of the lightening hole 91, the wheel 98 having a desired unbalance amount can be obtained.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. For example, a plurality of lightening shapes and lightening shapes may be provided,
The shape of the outer circumference of the disc material may be eccentric, and the direction may be made heavier relative to the other directions. In this case, the direction that becomes heavier becomes the fillet shape, and the direction that becomes lighter becomes the lightening shape.

[0023]

As described in detail above, according to the present invention,
It has the following remarkable effects. According to the invention described in claim 1 , unbalance due to the weight of the air valve and flesh
Since the unbalance due to the tooth shape is offset, the unbalance of the entire wheel can be brought close to zero. As a result, the balance weight added later when assembled with the tire can be reduced, and the appearance of the wheel can be improved. Also, the cutouts in the fillet shape part
By forming a flesh when joining the disc and the rim
It can be used as a marker to know where the
It According to the second aspect of the invention, the unbalance due to the air valve mounted on the rim and the unbalance due to the fill-up shape make the air valve direction relatively heavy, so that it is always The direction of the air valve can be focused on the wheel. Therefore, the direction of the air valve can be used as a reference for the priority of the wheel, and the work of adding the balance weight can be made more efficient. Also, flesh
By making a notch in the shape part, the disc and the rim are connected.
It is a mark to know where the fillet shape part is when mating
You can

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a wheel according to a first embodiment (reference example) .

FIG. 2 is a plan view of a disc material of a wheel according to the first embodiment (reference example) .

FIG. 3 is a plan view of a disc material of a wheel according to a second embodiment.

FIG. 4 is a plan view of a disc material of a wheel according to a third embodiment (reference example) .

FIG. 5 is a plan view of a disc material of a wheel according to a fourth embodiment (reference example) .

FIG. 6 is a front view of a wheel according to a fourth embodiment (reference example) .

[Explanation of symbols]

1 wheel 2 discs 2b wall surface 3 rims 25 Thin shape line 32 Air valve mounting part 71, 81 arcs 91 Lightening hole

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shinichi Watanabe 1-10-1 Shin-Sayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (72) Inami Hidemi Ichise 1907, Hirata-cho, Suzuka-shi, Mie Honda Motor Co., Ltd. Inside Suzuka Seisakusho Co., Ltd. (56) Bibliography 3-5601 (JP, U) Hei 3-9902 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60B 3 / 00 B60B 23/00 F16F 15/32

Claims (2)

(57) [Claims] 1. A wheel formed by joining a rim and a cup-shaped disc fitted into the inner diameter of the rim ,
The fitting part of the disc is provided with
In the flesh shape to form a notch, provided on the rim
And air valve mounting hole before and direction in the direction of the fillets shape
A balanced wheel that is 180 degrees off the center of the disc . 2. A wheel formed by joining a rim and a cup-shaped disc fitted into the inner diameter of the rim ,
The fitting part of the disc is provided with
In the flesh shape to form a notch, provided on the rim
A wheel with a balanced balance, characterized in that the direction of the air valve mounting hole and the direction of the fillet shape are matched.