JP3050796B2 - Assembled wheel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling wheel formed by a disk and a rim which are formed separately from each other, and which are connected by fastening bolts and nuts. And a so-called three-piece type wheel having a two-part rim having an outer rim and an inner rim.

[0002]

2. Description of the Related Art Recently, tires used in passenger cars have been widened and flattened. Also, the wheels on which the tires are mounted are being made of light alloys such as aluminum alloys. In some of such aluminum alloys (aluminum wheels), the disk and the rim of the wheel are formed separately, and these are used as fastening means such as fastening bolts and nuts. Some are intended to be combined. By the way, in general, at the time of cornering of a vehicle, for example, as shown in FIG.
A large force (cornering force F) is applied to the joint between the zero and the disk 10. On the other hand, since the fastening bolts 50 and the like forming the coupling portion are provided near the periphery of the rotating body,
It will be affected by centrifugal force, so its mass should be as small as possible. For these reasons, a material having a very large diameter (thick) cannot be used. Therefore, in order to provide a structure in which a tensile force is not applied to the fastening bolt 50,
When the cornering force or the like is input, the force (F) is applied to the disk 1 from the flange 210 of the rim 20.
The configuration is such that the input is made directly to the engaging portion 110 formed on the periphery of the zero.

[0003]

By the way, the flange 210 of the rim 20 is engaged with the shoulder of the engaging portion 110 of the disk 10 as described above. In the one that adopts a large and increases the rigidity of the whole wheel,
For example, as shown in FIG. 3, the inner diameter of a center well 290 for mounting a tire formed at the center of the rim 20 is smaller than the outer diameter of the disk 10. In such a configuration,
Since the disc 10 and the rim 20 cannot be assembled, as shown in FIG. 3, a notch 190 is provided in a part of the engaging portion 110 provided on the peripheral edge of the disc 10, and the notch 190 Through the center well 290 of the rim 20 so that the shoulder of the engaging portion 110 of the disc 10
There is one in which the flange portion 210 is engaged. However, this type has a problem that an unbalanced mass is generated at the peripheral portion of the disk 10 that rotates at a high speed, which is not preferable in terms of the rotational balance of the entire wheel. In order to solve such a problem, a concave-convex engaging portion having a circumferentially symmetrical shape is provided on the outer peripheral portion of the disk and the inner peripheral portion side of the rim, and the disc is provided via the engaging portion. It is an object (problem) of the present invention to provide an assembling wheel in which a rim and a rim are assembled.

[0004]

Means for Solving the Problems To solve the above problems, the present invention takes the following measures. That is, an assembly formed by a disc-shaped disc and a rim attached to the outer peripheral portion of the disc and having a ring-like form, and integrally formed by fastening bolts or the like. With regard to the wheel of the formula, an engaging portion composed of a plurality of convex pieces is provided on the outer peripheral portion of the disc, and among the rims, those provided inside the wheel when assembled as a wheel (hereinafter referred to as inner rims), On the inner diameter side, a convex-shaped engaging portion formed to form a pair with the convex-shaped engaging portion provided on the disc is provided, and further, a rim portion of the wheel is formed together with the inner rim. And provided on the outside of the wheel when assembled as a wheel (hereinafter referred to as an outer rim). A engaging portion made the above disk, in a state in which the disc is mounted on a vehicle assembled as wheel, it is located outside the vehicle body
Where it comes to, engage the convex piece engagement portion of the inner rim, further, outside the engagement portion of the inner rim,
The outer rim is fitted with a flange formed on the inner diameter side thereof, and thereafter, the flange of the outer rim, the engagement of the inner rim, and the engagement of the disk are fixed with predetermined fastening bolts and nuts. It is decided to adopt a configuration to be combined.

In assembling a disk and a rim having such a configuration, first, the disk is approached from the front side (front side) of the inner rim, and is provided on the inner diameter side of the inner rim. The convex-shaped engaging portion provided on the outer peripheral portion of the disc is fitted into the concave portion formed between the adjacent convex-shaped engaging portions, and then, the outer peripheral portion of the disc is fitted into the concave portion. By passing the formed convex piece-shaped engaging portion through the concave portion provided on the inner rim side, and further rotating the disk in the circumferential direction in such a state (see FIG. 1). ), The convex engaging portion provided on the outer peripheral portion of the disc is engaged with the rear side of the convex engaging portion formed on the inner diameter side of the inner rim. Thus, the engagement portion of the inner rim can be engaged with the shoulder of the convex engagement portion formed on the outer peripheral portion of the disk. Then, although mounted in such a state, a ring-shaped outer rim is further attached to the outside thereof, and thereafter, a flange portion of the outer rim, a convex engaging portion of the inner rim, and a convex fin of the disk are attached. By assembling the engagement portion with a fastening bolt and a nut, the split-type wheel is assembled.

When the wheel thus assembled is mounted on a vehicle and the vehicle makes a sharp turn or the like, a large cornering force is input to the wheel via a tire. And
The force resulting from the cornering force acts greatly on the outer wheels of the turning vehicle. However, according to the present invention, as shown in FIG. 2, the cornering force (F) is inputted to the inner rim (inner rim) from the tire, and the cornering force (F) inputted to this inner rim (inner rim) is inputted. The force (F) is transmitted to the convex engaging portion formed on the outer peripheral portion of the disk via the convex engaging portion formed on the inner diameter side of the rim (inner rim). That is, the large cornering force (F) generated during the turning motion of the vehicle or the like is transmitted to the engaging portion provided on the outer peripheral portion of the disk via the engaging portion of the inner rim.
As a result, no load is directly applied to the fastening bolt connecting the rim and the disk (no input is made). Therefore, a large axial force is not input to the fastening bolt, and it is not necessary to prepare a large-diameter fastening bolt capable of withstanding a large axial force. That is, the disk and the rim can be fastened by a small fastening bolt having a small shaft diameter.

In the present invention, the convex piece-shaped engaging portion formed on the inner rim side of the inner rim is further formed on the inner rim side of the ring-shaped outer rim on the outer side. Since the flange portion is mounted (coupled) and the fastening bolt is mounted in such a state, the durability of the seat surface to which the fastening bolt is attached is further enhanced. That is, the bending force in the plate field is originally input to the engagement portion of the inner rim and the place where the fastening bolt is attached by the action of the cornering force. Due to the action of the repeated bending force, there is a possibility that damage such as a crack may occur at the engagement portion of the inner rim. However, in the case of the present invention, a ring-shaped outer rim as shown in FIGS. 1 and 2 is attached to the engagement portion.
Since the fastening bolt is mounted via the flange portion of the outer rim, stress concentration or the like does not occur in the engagement portion by tightening the fastening bolt. That is, the force from the inner rim side is not directly input to the portion in contact with the seat surface of the bolt head of the fastening bolt, so that stress concentration around the fastening bolt engaging hole of the engaging portion of the inner rim is avoided. become. As a result, the durability around the engagement portion of the inner rim is enhanced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. Although according to the embodiment of the present invention, as shown in FIG.
And the disc 1 are formed as separate bodies, and these are basically formed as assembled type wheels formed by being integrally connected by fastening bolts 5 and nuts 6. It is.

In such a configuration, the disk 1
As shown in FIG. 1, is formed in a disk-like form, and is made of a light alloy such as an aluminum alloy. In addition to being basically formed in such a disc-like form, a plurality of engaging portions 11 in a form of convex pieces provided at equal intervals (equal pitch) are provided at the outer peripheral portion thereof. It is designed to be provided individually. The engagement portion 11 has an engagement hole 1 in which a fastening bolt 5 described later is mounted.
11 is provided.

The rims 2 and 3 of the disk 1 having the above configuration, which are engaged with the engagement portions 11, are made of a light alloy such as an aluminum alloy, similar to the disk 1. As shown in FIG. 1, the second embodiment is of a two-part type. That is,
An outer rim (outer rim) 3 which is located outside the vehicle body when assembled as a wheel and mounted on the vehicle, and an inner rim (inner rim) 2 which is located inside the vehicle body. And
This is generally called a three-piece wheel. In the present embodiment, the configuration and operation of the three-piece wheel will be mainly described. However, these technical contents are also applied to a so-called two-piece wheel in which the outer rim and the inner rim are integrated. The same can be said.

In such a configuration, the inner rim 2 has a cylindrical shape, and has one end face side and an inner diameter side thereof, as shown in FIG. 1 and FIG. Engaging part 2 engaging with engaging part 11 of disk 1
1 are formed circumferentially and at equal intervals (equal pitch). Each of the engaging portions 21 is provided with a through-shaped engaging hole 211 for mounting the fastening bolt 5.
The engaging hole 211 is provided in the engaging portion 1 of the disc 1.
In order to correspond to the engagement holes 111 provided in the first, the holes are provided at the same interval and at the same pitch.

As shown in FIG. 1, the outer rim 3 mounted on the outer side of the inner rim 2 having such a configuration is formed in a ring shape, and is provided on the side of the inner rim 2 which comes into contact with the engaging portion 21. Is such that a flange portion 31 is formed corresponding to the engaging portion 21 of the inner rim 2. As shown in FIGS. 1 and 2, the flange portion 31 corresponds to the engagement holes 111 and 211 formed in the engagement portion 11 of the disk 1 and the engagement portion 21 of the inner rim 2. And fastening bolt 5
An attachment hole 311 for mounting is provided.

As shown in FIG. 2, the engaging bolt 11 for integrally connecting the engaging portion 11 of the disk 1 and the engaging portion 21 of the inner rim 2 and the flange portion 31 of the outer rim 3 having the above-mentioned structure. A seat portion (seat surface) 511 is formed at the head 51, and a screw portion 55 is formed at one end thereof, and the nut 6 is attached here. It is something that is to be done. The disk 1, the inner rim 2, and the outer rim 3 are joined and integrated by such fastening bolts 5 and nuts 6.

Next, the disk 1 having the above-described configuration will be described.
The procedure for assembling the rims 2 and 3 will be described. First,
As shown in FIG. 1, the disc 1 is approached from the front side (front side) of the inner rim 2, and the engaging portions 21, 21 which are provided on the inner diameter side of the inner rim 2 and are adjacent to each other, are provided. The convex piece-shaped engaging portion 11 formed on the outer peripheral portion of the disk 1 is fitted into the concave portion 25 formed between the two. At the same time, the convex piece-shaped engaging portion 11 is passed through the concave portion 25, and in such a state, the disk 1 is rotated by a predetermined angle in the circumferential direction. Thereby, the convex engaging portion 11 provided on the outer peripheral portion of the disk 1 can be engaged with the back side of the convex engaging portion 21 formed on the inner diameter side of the inner rim 2. Become. That is,
A convex engaging portion 11 formed on an outer peripheral portion of the disk 1
The engaging portion 21 of the inner rim 2 can be engaged with the shoulder of the inner rim 2. Next, the ring-shaped outer rim 3 is mounted on the outer rim of such a state, and thereafter, the flange portion 31 of the outer rim 3, the convex piece-shaped engaging portion 21 of the inner rim 2, and the disk The first engaging piece 11 is fastened using predetermined fastening bolts 5 and nuts 6.

More specifically, as shown in FIG.
Outside the engaging portion 11, the engaging portion 21 of the inner rim 2 is inserted into the engaging hole 11 for mounting the fastening bolt 5.
In this state, the flange portion 31 of the outer rim 3 is placed outside the engagement portion 21 of the inner rim 2 in the engagement hole 311. Is temporarily mounted in a state where the position is aligned with the engagement hole 211 of the inner rim 2.
In such a state, the engagement holes 111, 21
1 and 311, the fastening bolt 5 is attached, and then the nut 6 is attached to the threaded portion 55 of the main fastening bolt 5.
And further tighten the nut 6. Through a series of these operations, the disc 1, the inner rim 2, and the outer rim 3 are integrated, and a three-piece wheel is assembled.

Next, the operation and the like of the embodiment having the above-described configuration will be described. That is, when the vehicle equipped with the wheel having the above configuration makes a sharp turn or the like while traveling, a large cornering force (F) acts on the wheel via the tire as shown in FIG. Becomes Then, the cornering force (F) largely acts on the outer wheels of the turning vehicle. Further, as shown in FIG. 2, the cornering force (F) is input to the inner rim (inner rim) 2, and the cornering force (F) input to the inner rim (inner rim) 2 is applied to the rim. The power is transmitted to the engaging portion 11 formed on the outer peripheral portion of the disc 1 via the engaging portion 21 formed on the inner diameter side of the (inner rim) 2. That is, a large cornering force generated during the turning motion of the vehicle or the like is transmitted from the engaging portion 21 of the inner rim 2 to the engaging portion 11 provided on the outer peripheral portion of the disc 1. As a result, the load is not directly input to the fastening bolt 5 connecting the rims 2, 3 and the disk 1. Accordingly, a large axial force is not input to the fastening bolt 5, and it is not necessary to prepare a large-diameter fastening bolt 5. That is, the disk 1 and the rims 2 and 3 can be fastened by the small fastening bolts 5 having a small shaft diameter.

In this embodiment, the outer rim 3 having a ring shape is further provided outside the convex piece-shaped engaging portion 21 formed on the inner diameter side of the inner rim 2. Since the flange portion 31 formed on the inner diameter portion side is mounted, the durability of the engaging portion 21 is further enhanced. That is, the bending force in the plate field is input to the engagement portion 21 of the inner rim 2 and the place where the fastening bolt 5 is attached, by the action of the cornering force. Due to the action of this repeated bending force, damage such as a crack may occur at the engagement portion 21 of the inner rim 2. However, in the present embodiment, the inner rim 2
The ring-shaped outer rim 3 as shown in FIGS. 1 and 2 is attached to the engagement portion 21 of
Since the fastening bolt 5 is mounted via the flange portion 31 of the outer rim 3, the repeated bending force input to the engaging portion 21 of the inner rim 2 causes the flange portion 31 of the ring-shaped outer rim 3 to move. Will be distributed throughout. Therefore, the engagement portion 21 of the inner rim 2
Will increase its durability.

[0018]

According to the present invention, there is provided a disk-shaped disk,
A rim that is attached to the outer peripheral portion of the disc and has a ring-like shape, and is a rim that is formed by being integrally connected with a fastening bolt or the like, with respect to the assembled type wheel, An outer peripheral portion provided with an engaging portion composed of a plurality of convex pieces, and one of the rims provided inside the wheel when assembled as a wheel (hereinafter referred to as an inner rim)
On the inner diameter side, a convex piece engaging portion formed to form a pair with the convex piece engaging portion provided on the disc is provided, and further, the rim portion of the wheel together with the inner rim is provided. An outer rim, which is provided outside the wheel when assembled as a wheel, and is an engaging portion of the disk thus formed, wherein the disk is used as a wheel. On the side forming the outside of the wheel in the assembled state, the convex piece-shaped engaging portion of the inner rim is engaged,
Further, a flange formed on the inner rim side of the outer rim is attached to the outside of the engagement portion of the inner rim, and thereafter, the flange portion of the outer rim, the engagement portion of the inner rim, and the engagement of the disk Because the parts are connected with predetermined fastening bolts and nuts, when a large load such as a cornering force is input to the wheel, the force input from the rim side is The force is transmitted from the engaging portion on the rim side to the engaging portion of the disk, and the force is not directly transmitted to the fastening bolt. As a result, the fastening bolt on which the centrifugal force acts when the wheel rotates can have a thinner shaft diameter and, therefore, a lighter mass, and can maintain a good rotational balance of the entire wheel. Now you can.

Also, since the mass of the fastening bolt can be reduced, the mounting position of the fastening bolt can be set as close to the rim as possible, and the spoke portion length of the wheel can be reduced. You can show it for a long time. That is, the appearance of the entire wheel can be improved, and the style can be improved.

Further, since the ring-shaped outer rim is provided at the engaging portion of the rim, a force from the inner rim side is prevented from being directly input to a portion in contact with the bolt head of the fastening bolt. As a result, stress concentration around the fastening bolt mounting hole (engaging hole) of the engaging portion of the inner rim is prevented. As a result, the durability of the engaging portion is improved, and the weight of the entire rim including the engaging portion and the weight of the entire wheel can be reduced.

[Brief description of the drawings]

FIG. 1 is a developed perspective view showing the overall configuration of the present invention.

FIG. 2 is a cross-sectional view showing a structure of a disc and a rim engaging portion according to the present invention.

FIG. 3 is a developed perspective view showing the entire configuration of a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 disc 11 engaging portion 111 engaging hole 2 inner rim 21 engaging portion 21 ′ engaging portion 211 engaging hole 25 concave portion 3 outer rim 31 flange portion 311 engaging hole 5 fastening bolt 51 bolt head 511 seat portion (seat surface) 55 Screw part 6 Nut

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-146701 (JP, A) JP-A-5-24405 (JP, A) JP-A-6-32105 (JP, A) JP-A-54-146 45002 (JP, A) Fully open sho 64-33401 (JP, U) Fully open flat 5-5501 (JP, U) Fully open flat 1-65702 (JP, U) Fully open flat 7-43760 (JP, U) 6-87002 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60B 21/00 B60B 21/02 B60B 3/04 B60B 25/00 B60B 25/02

Claims (1)

(57) [Claims] 1. An assembling wheel formed by a disk-shaped disk and a ring-shaped rim attached to an outer peripheral portion of the disk, which are integrally connected by fastening bolts. An engaging portion made of a plurality of convex pieces is provided on an outer peripheral portion of the disk, and a pair of convex portions is provided on the inner rim of the inner rim of the rim. A state in which the formed convex piece-shaped engaging portion is provided, an outer rim that forms a rim portion of the wheel together with the inner rim is provided, and the engaging portion of the disc is assembled as a wheel and mounted on a vehicle. At the outside of the car body
On the side that comes to be located , the convex piece-shaped engaging portion of the inner rim is engaged, and a flange formed on the inner diameter side of the outer rim is mounted outside the engaging portion of the inner rim. An assembly type wheel, wherein a flange portion of an outer rim, an engagement portion of an inner rim, and an engagement portion of a disk are connected by predetermined fastening bolts and nuts.