JPH09240202A - Assembly type wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent application of an axial load to a fastening bolt connecting a disc and a rim together when a cornering force and the like is applied to a wheel. SOLUTION: A flange part 11 is arranged in the outer circumference part of a disc 1, and in the flange part 11, an engaging hole for installing a fastening bolt 5 is arranged. A rim to be engaged with the disc 1 is constructed of an inner rim 2 arranged on the inside and an outer rim 3 arranged on the outside. On the respective inside diameter part sides of the respective rims 2, 3, engaging flange parts 21, 31 are arranged. In these engaging flange parts 21, 31, engaging holes for installing the fastening bolt 5 are arranged. The engaging flange parts 21, 31 are temporarily installed on the outside of the flange part 1 in the disc 1, while the fastening bolt 5 is installed so as to pass through the respective engaging holes, and afterwards, a nut 6 is used in addition so as to integrally bind the disc 1 and the rims 2, 3 together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly type wheel which is composed of a disc and a rim which are separate from each other and which are joined together by fastening bolts and nuts.

[0002]

2. Description of the Related Art Recently, tires used in passenger cars have been widened and flattened. The wheels on which the tires are mounted are being made of light alloys such as aluminum alloys. Also, in some of these aluminum alloy products (aluminum wheels), the disc portion and the rim portion of the wheel are formed separately, and these are fastened with fastening bolts, nuts, etc. Some are designed to be combined by means.

[0003]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention In the assembly type wheel in which the disc portion and the rim portion are formed separately and are joined together, the above-mentioned problem is caused when the vehicle corners. Wheel rim,
Also, a large force (cornering force) is applied to the joint portion between the rim portion and the disc portion. Then, in this case, a large axial force is applied to the fastening bolts provided in the engaging portion. By the way,
Since the fastening bolts that form these coupling portions are provided on the peripheral portion of the rotating body, they receive a large centrifugal force. Therefore, it is necessary to reduce the mass in order to minimize the effect. As a result, the diameter of the fastening bolt cannot be too large (large diameter). From these things, in wheels used for competition vehicles such as rally vehicles, it is considered that the structure of the engaging portion between the rim portion and the disc portion is such that a large axial force is not applied to the fastening bolt. Has been. It is an object (problem) of the present invention to provide an assembly type wheel in consideration of such a point.

[0004]

Means for Solving the Problems To solve the above problems, the present invention takes the following measures. That is, in the invention according to claim 1, the disc-shaped disc and the rim that is attached to the outer peripheral portion of the disc and has a ring-shaped configuration are integrally formed by fastening bolts or the like. With respect to the assembly-type wheel formed by being coupled, a flange portion is provided on the outer peripheral portion of the disc, and an engaging flange portion is also provided on the inner diameter side of the ring-shaped rim, The flange portion of the disc thus formed is engaged with the engagement flange portion of the rim on the side forming the outside of the wheel in a state where the disc is assembled as a wheel, and thereafter, these It was decided to adopt a configuration in which the flange part and the engaging flange part are connected using a predetermined fastening bolt and nut.

[0005] By adopting the above configuration, the present invention has the following functions. That is, when the vehicle having the wheel configured as described above makes a sharp turn or the like during traveling, a large cornering force is input to the wheel through the tire. Then, this cornering force largely acts on the outer wheels of the turning vehicle. By the way, in the present invention, the cornering force is input from the tire side to the inner rim (inner rim) as shown in FIG. 2, and the cornering force input to the inner rim is the inner rim. ,
It is transmitted from the engaging flange portion formed on the inner diameter side of the rim (inner rim) to the flange portion formed on the outer peripheral portion of the disc. That is, a large cornering force generated when the vehicle turns or the like is widely transmitted to the outer peripheral portion of the disk via the engaging flange portion and the flange portion. As a result, no load is directly applied to the fastening bolt connecting the rim and the disc. Therefore, a large axial force is not input to the fastening bolt, and it is not necessary to prepare the fastening bolt having a large diameter capable of withstanding a large axial force. That is, the disc and the rim can be fastened with a small fastening bolt having a small shaft diameter.

Next, the invention according to claim 2 will be described. The basic points of the present invention are the same as those of the first aspect. The feature is that in addition to the invention of claim 1, a ring-shaped rim retainer is provided at the engaging flange portion of the rim and in contact with the seat surface of the fastening bolt. That is what I did.

By adopting such a configuration, according to the present invention, in addition to the first aspect,
The durability strength of the portion of the fastening bolt that comes into contact with the seat surface is further increased. That is, by the action of the cornering force, the repetitive bending force in the board is input at the place where the engaging flange of the rim comes into contact with the seat (seat surface) of the fastening bolt head. Becomes Then, due to the action of the repeated bending force, there is a possibility that damage such as a crack may occur at a portion of the rim engaging flange portion that contacts the fastening bolt seating surface. However, in the case of the present invention, a ring-shaped rim retainer as shown in FIGS. 3 and 4 is attached to a place where it comes into contact with the seating surface, and the fastening bolt is attached via this rim retainer. Therefore, stress concentration or the like does not occur in the engagement flange portion due to the tightening of the fastening bolts. That is, the periphery of the fastening bolt engagement hole of the engagement flange portion is entirely held via the ring-shaped rim retainer. Therefore, the durability of the engaging flange portion of the rim against the repeated bending force is increased.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. Although it is according to the embodiment of the present invention, as shown in FIG. 1, the structure is such that the rim 2 and the disc 1 are separate bodies, and
It is basically composed of an assembly type wheel formed by being integrally connected with a fastening bolt 5 and a nut 6.

In such a structure, the disk 1
As shown in FIG. 1, it has a disc shape and is made of a light alloy such as an aluminum alloy. In addition, it is basically formed of such a disc shape, and a flange portion 11 having a brim shape is formed at the outer peripheral portion thereof. And this flange part 1
A plurality of engaging holes 111, into which fastening bolts 5 to be described later are mounted, are provided at position 1 at equal intervals.

The rims 2 and 3 that engage with the flange portion 11 of the disk 1 having such a structure are made of a light alloy such as an aluminum alloy as with the disk 1. In the present embodiment, as shown in FIG. 1, it is of a two-division type. That is, when assembled as a wheel and attached to a vehicle, an outer rim (outer rim) 3 that is present outside the vehicle body and an inner rim (inner rim) 2 that is present inside the vehicle body ,. That is, a generally known three-piece wheel is formed. In addition,
In the present embodiment, the configuration and operation of the three-piece wheel will be mainly described. However, regarding the technical contents of these, the outer rim 3 and the inner rim 2 are described.
The same applies to a so-called two-piece wheel in which and are integrated.

In such a structure, the inner rim 2 has a cylindrical shape, and one end face of the inner rim 2 is engaged with the flange portion 11 of the disc 1 as shown in FIGS. The engaging flange portion 21 is formed circumferentially. A plurality of penetrating engagement holes 211 for mounting the fastening bolt 5 are provided at the engagement flange portion 21. The engagement hole 211 is the engagement hole 111 provided in the flange portion 11 of the disc 1.
In order to correspond to the above, the electrodes are arranged at equal intervals (equal pitch).

As shown in FIG. 1, the outer rim 3 mounted on the outer side of the inner rim 2 having the above-mentioned structure has a ring-like shape.
An engaging flange portion 31 is also formed at a position where the engaging flange portion 21 contacts the engaging flange portion 21 of the inner rim 2. At the engaging flange portion 31, as shown in FIGS. 1 and 2, the flange portion 11 of the disc 1 and the inner rim 2 are formed.
Engaging holes 111, 21 formed in the engaging flange portion 21 of
Corresponding to No. 1, similarly engaging hole 3 for mounting fastening bolt 5
11 is provided.

The flange portion 11 of the disc 1 and the engaging flange portion 21 of the inner rim 2 having the above-mentioned structure,
Further, as shown in FIG. 2, the fastening bolt 5 that integrally joins the engaging flange portion 31 of the outer rim 3 has a seat portion (seat surface) 511 formed at the head 51 thereof. And the threaded portion 5 at one end
5 is formed, and the nut 6 is attached thereto. The disc 1, the inner rim 2, and the outer rim 3 are joined and integrated by the fastening bolts 5 and the nuts 6 as described above.

Next, the procedure for assembling the present wheel having the above-mentioned structure will be described. First, as shown in FIG.
The engaging flange portion 21 of the inner rim 2 is temporarily attached to the outer side of the flange portion 11 of the disc 1 with the engaging holes 111 and 211 for attaching the respective fastening bolts 5 aligned. Then, in such a state, the engaging flange portion 31 of the outer rim 3 is provided at the outer side of the engaging flange portion 21 of the inner rim 2, and the position of the engaging hole 311 is set to the engaging hole of the inner rim 2. Temporarily mount it while aligning with 211. In such a state, the fastening bolts 5 are mounted so as to penetrate the engagement holes 111, 211, 311 and then the final fastening bolts 5
The nut 6 is attached to the threaded portion 55, and the nut 6 is further tightened. By this series of operations, the disc 1, the inner rim 2, and the outer rim 3 are integrated, and the three-piece wheel is assembled.

Next, in these assembly type wheels, in order to reinforce the portion of contact with the seat portion (seat surface) 511 of the fastening bolt 5, the portion of contact with the seat surface 511 (engagement flange portion 31). A ring-shaped rim retainer 4 will be described with reference to FIGS. 3 and 4. This one is on the outside of the outer rim 3,
Further, a ring-shaped rim retainer 4 is provided. In many cases, the rim retainer 4 is made of aluminum alloy or the like, and the inner diameter side thereof is
An engagement flange portion 41 that contacts the engagement flange portion 31 of the outer rim 3 is formed, and an engagement hole 411 for mounting the fastening bolt 5 is formed at the engagement flange portion 31. Is to be provided. The engagement hole 411 is a through hole into which the fastening bolt 5 is mounted, and corresponds to the engagement holes 111, 211, 311 provided in the disc 1, the inner rim 2, and the outer rim 3. As described above, they are formed at equal intervals.

Next, the operation and the like of the present embodiment having such a configuration will be described. That is, when the vehicle having the wheel configured as described above makes a sharp turn or the like while traveling, a large cornering force (F) is input to the wheel through the tire as shown in FIG. . Then, the cornering force (F) largely acts on the outer wheels of the turning vehicle. Further, the cornering force (F) is input to the inner rim (inner rim) 2 as shown in FIG. 2, and the cornering force (F) input to the inner rim (inner rim) 2 is the rim. It is transmitted from the flange portion 21 formed on the inner diameter side of the (inner rim) 2 to the flange portion 11 formed on the outer peripheral portion of the disc 1. That is, a large cornering force generated when the vehicle makes a turning motion is widely transmitted to the outer peripheral portion of the disc 1 via the engaging flange portion 21 and the flange portion 11.
As a result, the load is not directly applied (input) to the fastening bolt 5 connecting the rims 2 and 3 and the disc 1. Therefore, 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 with the small fastening bolt 5 having a small shaft diameter.

Further, as shown in FIGS. 3 and 4, in the outer rim 3 provided with the ring-shaped rim retainer 4 on the outer side thereof, it comes into contact with the seat surface 511 of the fastening bolt 5. The durability of the engagement flange portions 21 and 31 is further enhanced. That is, originally, at the place where the engaging flange portions 21 and 31 of the rims 2 and 3 come into contact with the seat surface 511 of the head 51 of the fastening bolt 5, the action of the cornering force (F) causes the plate The repeated bending force in the field will be input. Therefore, due to the action of this repeated bending force, damage such as cracks may occur at the places where the engaging flange portions 21 and 31 of the rims 2 and 3 come into contact with the seat surface 511 of the fastening bolt 5. However, in the case of the present embodiment, the portion in contact with the seat surface 511 is not shown in FIG.
Also, the ring-shaped rim retainer 4 as shown in FIG. 4 is attached, and the fastening bolt 5 is attached through the rim retainer 4, so that the engaging flange portion 21 , 31 does not cause stress concentration.
That is, the force input from the engaging flange portion 21 of the inner rim 2 is dispersed over the entire surface of the disc 1 via the ring-shaped rim retainer 4. Therefore, stress concentration or the like does not occur in the engaging flange portions 21 and 31 of the rims 2 and 3, and the durability strength thereof is enhanced.

[0018]

According to the present invention, a disc-shaped disk,
A disc-shaped wheel that is attached to the outer peripheral portion of the disc and has a ring-shaped rim, and these are integrally coupled by fastening bolts or the like. A flange portion is provided on the outer peripheral portion, and an engaging flange portion is also provided on the inner diameter portion side of the ring-shaped rim, which is the flange portion of the disc thus formed, and the disc is assembled as a wheel. In this state, engage the engaging flange portion of the rim with the side that forms the outside of the wheel, and then connect the flange portion and the engaging flange portion with a predetermined fastening bolt and nut. Since it is decided to adopt the configuration described above, when a large load due to cornering force etc. is input to this wheel, from the above rim side Force with force becomes to be transmitted from the engagement flange of the rim side to the flange portion of the disc, the force to the place of the fastening bolt has become not propagated directly. As a result, it becomes possible to reduce the shaft diameter of the fastening bolt, and thus to reduce the mass thereof. As a result, it has become possible to suppress unbalance mass and the like during the rotational movement of the wheel to be small.

Further, since the mass of the fastening bolt can be reduced, the mounting position of the fastening bolt can be installed on the rim side as much as possible, and the spoke length of the wheel can be reduced. I can see it for a long time. In other words, the appearance of the entire wheel can be improved and its style can be improved.

Further, in the case where the ring-shaped rim retainer is provided at the engaging flange portion of the rim, the force from the rim side comes into contact with the bolt head of the fastening bolt of the engaging flange portion. However, there is no need for direct input, and durability strength around the fastening bolt engagement hole of the engagement flange portion is improved. As a result, it has become possible to reduce the weight of the entire rim including the engaging flange portion, and thus the weight of the entire wheel.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the overall configuration of the present invention.

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

FIG. 3 is a developed perspective view showing the overall structure of another embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a structure of an engaging portion between a disc and a rim according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 disk 11 flange part 111 engaging hole 2 inner rim 21 engaging flange part 211 engaging hole 3 outer rim 31 engaging flange part 311 engaging hole 4 rim retainer 41 engaging flange part 411 engaging hole 5 fastening bolt 51 bolt head 511 Seat (seat surface) 55 Thread 6 Nut

Claims (2)

[Claims] 1. A disc-shaped disc and a ring-shaped rim that is attached to an outer peripheral portion of the disc and is formed by integrally connecting these with a fastening bolt or the like. In the assembly type wheel described above, a flange portion is provided on the outer peripheral portion of the disc, and an engaging flange portion is also provided on the inner diameter side of the ring-shaped rim. The flange portion of the disc thus formed The engaging flange portion of the rim is engaged with the side forming the outside of the wheel in a state where the disc is assembled as a wheel, and thereafter, the flange portion and the engaging flange portion are predetermined. An assembly-type wheel characterized by being configured to be coupled using the fastening bolts and nuts of. 2. A disc-shaped disc and a ring-shaped rim that is attached to an outer peripheral portion of the disc and is formed by integrally connecting them with a fastening bolt or the like. In the assembly type wheel described above, a flange portion is provided on the outer peripheral portion of the disc, and an engaging flange portion is also provided on the inner diameter side of the ring-shaped rim. The flange portion of the disc thus formed The engaging flange portion of the rim is engaged with the side that forms the outside of the wheel when the disc is assembled as a wheel, and the rim is held outside the engaging flange portion. Ring-shaped rim retainer for attaching the rim retainer, and then the rim retainer, the engaging flange of the rim, and the flange of the disc. A prefabricated wheel characterized in that it is configured to be coupled using a fastening bolt and a nut.