JP3050797B2 - 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.

[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. In some of such aluminum alloy wheels (aluminum wheels), the disk portion and the rim portion of the wheel are formed separately, and these are fastened with fastening bolts and nuts. Some are adapted to be connected by means.

[0003]

In the case of such an assembled wheel in which the disk portion and the rim portion are formed separately and are combined with each other, the above-mentioned structure is required at the time of cornering of the vehicle. Wheel rim,
Also, a large force (corning force) is applied to the joint between the rim and the disk. In this case, a large axial force is applied to the fastening bolt provided at the engagement portion. By the way,
The fastening bolts forming these coupling portions are subjected to a large centrifugal force because they are provided on the peripheral edge of the rotating body. Therefore, it is necessary to reduce the mass in order to minimize the influence. As a result, the diameter of the fastening bolt cannot be too large (large diameter). From these facts, in the wheel used for the competition vehicle such as the rally vehicle, the structure of the engaging portion between the rim portion and the disc portion should be such that a large axial force is not applied to the fastening bolt. It is considered. It is an object (problem) of the present invention to provide an assembling type wheel in consideration of such points.

[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 respect to the wheel of the formula, a flange portion is provided on the outer peripheral portion of the disk, and a recess groove is provided on the circumference of the disk and on the back side of the flange portion in a state where the disk is assembled as a wheel, Further, an engaging portion formed parallel to the flange portion and formed of a plurality of convex pieces is provided on the back side of the flange portion with the recess groove interposed therebetween. The inner disk is provided inside the wheel (hereinafter referred to as the inner rim) in the A convex piece-shaped engaging portion formed so as to correspond to the convex piece-shaped engaging portion, and further form a rim portion of the wheel together with the inner rim, in a state where the wheel is assembled. On the inner diameter side of the outer rim (hereinafter referred to as the outer rim) provided on the outer side of the wheel, a convex piece-shaped engaging portion formed to form a pair with the engaging portion formed on the inner rim is provided. In the recess groove of the disc formed in the above, the convex piece-shaped engaging portion of the inner rim and the convex piece-shaped engaging portion of the outer rim are engaged in a state where both are joined, and then the flanges of these discs A configuration is adopted in which the portion and the engagement portion, and the engagement portion of the outer rim and the engagement portion of the inner rim are connected by predetermined fastening bolts and nuts.

[0005] When assembling the disk and the rim having such a configuration, first, the engaging portions of the outer rim and the inner rim are joined to form a rim assembly. Then, in such a rim assembly, the convex piece formed by joining the above-mentioned engaging portions is brought closer to the back side of the disc,
The convex portion is inserted into a concave portion formed on the rear surface side of the disk and formed between adjacent convex-shaped engaging portions. At the same time, the convex piece is passed through the concave portion formed on the back surface side of the outer peripheral portion of the disk, and further, in such a state, the disk is Rotate in the circumferential direction (see FIG. 1). As a result, the outer rim and the inner rim engaging portions are fitted into the recess grooves provided on the outer peripheral portion of the disk, and the engaging portions are formed as convex-shaped engaging portions formed on the back surface side of the disk. It will engage at the joint. Then, in such a state, the flange portion and the engagement portion of the disc,
Further, the engaging portion of the outer rim and the inner rim engaged in the recess groove of the disk is tightened using predetermined fastening bolts and nuts. As a result, the assembly of the split-type wheel is performed.

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. In the present invention, the cornering force (F) is input from the tire to the inner rim (inner rim) as shown in FIG. 2, and the cornering force (F) input to the inner rim (inner rim) The force (F) is transmitted to the convex-shaped engaging portion and the flange portion formed on the outer peripheral portion of the disk via the convex-shaped engaging portion formed on the inner diameter side of the rim (inner rim). Is done.
That is, the large cornering force (F) generated during the turning motion of the vehicle or the like is transmitted to the engaging portion and the flange portion provided on the outer peripheral portion of the disk via the engaging portion of the inner rim. Become. As a result, the load is not directly applied (input) 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 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.

Further, in the present invention, the convex piece-shaped engaging portion formed on the inner diameter side of the inner rim is connected to a convex piece-shaped engaging portion of the outer rim of the same form provided on the outside thereof. Further, since it is adapted to be engaged via a ring-shaped disk flange portion provided on the outer side thereof, the convex shape of the inner rim attached in such a state is provided. The durable strength of the engaging portion is further increased. 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, the location where the repeated bending force is input is shown in FIGS.
As shown in the figure, a ring-shaped flange portion is provided, and a fastening bolt is mounted via this flange portion, so that the engagement portion may be tightened by the fastening bolt. , Stress concentration and the like do not occur. 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]

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. 1, the rims 2 and 3 and the disk 1 are formed separately from each other, and these are integrated by a fastening bolt 5 and a nut 6. Is basically composed of a prefabricated wheel formed by being joined to the vehicle.

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 disk-like form, a flange-like flange 11 is formed at the outer peripheral portion thereof. And this flange part 1
A recess groove 12 is provided on the back surface side of the disk 1 and on the circumference of the disk 1. Further, on the rear surface side of the recess groove 12 and sandwiching the recess groove 12, a convex piece-like engaging portion 1 formed so as to correspond to an engaging portion 21 of the inner rim 2 described later.
5 are provided at equal intervals (equal pitch). Further, a plurality of engaging holes 151 and 111 in which the fastening bolts 5 to be described later are mounted are provided at equal intervals in the engaging portion 15 and the flange portion 11. It is.

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. Each of these two-split rims is provided as an outer rim (outer rim) 3 that is present outside the vehicle body when the rims are assembled as wheels and mounted on the vehicle, and is present inside the vehicle body. And an inner rim (inner rim) 2. That is, a three-piece wheel which is generally called is formed. In the present embodiment, the configuration and operation of the three-piece wheel will be mainly described. However, regarding the technical contents, the so-called two-piece wheel in which the outer rim and the inner rim are integrated is also described. The same can be said.

In such a configuration, the inner rim 2 has a cylindrical shape, and has an end surface on one side thereof, and the inner rim 2 has an inner diameter side, as shown in FIGS. A plurality of convex piece-shaped engaging portions 21 that engage with one engaging portion 15 are provided so as to correspond to the engaging portions 15 of the disc 1. Each of the engaging portions 21 is provided with a penetrating engaging hole 211 for mounting the fastening bolt 5. The engaging holes 211 are provided at equal intervals (at equal pitches) so as to correspond to the engaging holes 111 and 151 provided in the flange portion 11 and the engaging portion 15 of the disk 1, respectively. Is what it is.

The outer rim 3, which is mounted integrally with the inner rim 2 having the above-described structure in the recess groove 12 of the disk 1 and forms an outer rim when assembled as a wheel, As shown in FIG. 1, it has a ring-like shape, and a portion in contact with the inner rim 2 also has a convex piece-like shape so as to correspond to the engaging portion 21 of the inner rim 2. A joining portion 31 is provided. As shown in FIGS. 1 and 2, the engaging portion 31 of the inner rim 2 and the engaging holes formed in the flange portion 11 and the engaging portion 15 of the disc 1 are located at the engaging portion 31. An engagement hole 311 for mounting the fastening bolt 5 is provided so as to correspond to 211, 111, 151.

The fastening bolt 5 for integrally connecting the flange portion 11 and the engaging portion 15 of the disk 1 having such a structure, the engaging portion 21 of the inner rim 2 and the engaging portion 31 of the outer rim 3 is shown in FIG. As shown in FIG. 7, a seat (seat surface) 511 is formed at the head 51, and a screw portion 55 is formed at one end thereof. Things. The nut 6 is mounted on the screw portion 55. 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, an assembling procedure (assembly procedure) of the disk and the rim having such a configuration will be described. First, as shown in FIG. 1, the rim assembly is formed by joining the engagement portions 31 and 21 of the outer rim 3 and the inner rim 2. Then, in such a state of the rim assembly, the convex portion formed by joining the engaging portions 21 and 31 is brought closer to the back side of the disk 1, and the convex portion is moved to the rear surface of the disk 1. Adjacent to each other, are formed on the side and are adjacent to each other.
Insert into recess 19 formed between 5 '. At the same time, the convex portion formed by joining the respective engaging portions 31 and 21 of the outer rim 3 and the inner rim 2 is formed on the outer peripheral portion of the disk 1 and on the back surface thereof. Through the recessed portion 19 thus formed. Further, in such a state, the disk 1 is rotated by a predetermined amount in the circumferential direction thereof (see FIG. 1). As a result, the engaging portions 31 and 21 of the outer rim 3 and the inner rim 2 fit into the recess grooves 12 provided on the outer peripheral portion of the disk 1, and the engaging portions 31 and 21 are And also engages with the convex piece-shaped engaging portion 15 formed on the back surface side. In such a state, the engagement portions 31 and 21 of the outer rim 3 and the inner rim 2 engaged in the flange portion 11 and the engagement portion 15 of the disk 1 and the recess groove 12 of the disk 1 are also provided. Is tightened with fastening bolts 5 and nuts 6. As a result, the assembly of the split-type wheel is performed.

Next, the operation and the like of the wheel assembled as described above will be described. That is, when a vehicle equipped with such a wheel makes a sharp turn or the like, a large cornering force is input to the wheel via a tire. Then, the force resulting from the cornering force greatly acts on the outer wheels of the turning vehicle. In this embodiment, the cornering force (F) is input from the tire to the inner rim (inner rim) 2 as shown in FIG. The cornering force (F) input to the inner peripheral rim 2 of the disk 1 is formed by a convex engaging portion 21 formed on the inner diameter side of the rim (inner rim) 2. It is transmitted to the part 15 and the flange part 11. That is, a large cornering force (F) generated during a turning motion of the vehicle or the like.
The engaging portion 15 and the flange portion 11 provided on the outer peripheral portion of the disc 1 are provided via the engaging portion 21 of the inner rim 2.
It will be transmitted to. As a result, the rims 2, 3
The load is not directly applied to the fastening bolt 5 connecting the disk and the disk 1 (not input). Therefore, a large axial force is not input to the fastening bolt 5, and it is not necessary to prepare a large diameter bolt capable of withstanding a large axial force. That is, with a small fastening bolt 5 having a small shaft diameter,
The disk 1 and the rims 2 and 3 can be fastened.

In the present embodiment, the convex-shaped engaging portion 21 formed on the inner diameter side of the inner rim 2 has a convex-shaped engaging portion 21 of the outer rim 3 having the same configuration on the outer side. Since it is designed to be attached via the joint portion 31 and further to the outside thereof via the flange portion 11 of the disk 1 having a ring shape, the periphery of the mounting hole (engaging hole) 211 of the fastening bolt 5 is provided. Endurance strength will be further increased. 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, a ring-shaped flange portion 11 as shown in FIGS. 1 and 2 is provided at a position where the flange portion 11 comes into contact with the seat surface 511. , The fastening bolt 5 is mounted via the connecting member 21, so that stress concentration or the like does not occur in the engaging portion 21 by the fastening of the fastening bolt 5. That is, the force from the inner rim 2 side is applied to the bearing surface 5 of the bolt head 51 of the fastening bolt 5.
As a result, the force from the inner rim 2 side is widely dispersed through the flange portion 11 provided on the disk 1. As a result, the durability around the engaging portion 21 of the inner rim 2 is enhanced.

[0017]

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, A flange portion is provided on the outer peripheral portion, and a recess groove is provided on the circumference of the disc and on the back side of the flange portion in a state where the disc is assembled as a wheel, and further, the recess groove is sandwiched. On the back side of the flange portion, an engagement portion formed in parallel with the flange portion and comprising a plurality of convex pieces is provided.On the other hand, among the rims, inside the wheel when assembled as a wheel What is provided (hereinafter referred to as inner rim)
On the inner diameter side, there is provided a convex-shaped engaging portion formed so as to correspond to the convex-shaped engaging portion provided on the disk, and further, a rim portion of the wheel is formed together with the inner rim. The outer rim is provided outside the wheel in a state where it is assembled as a wheel, and is formed on the inner diameter side thereof so as to form a pair with the engaging portion formed on the inner rim. A convex piece engaging portion is provided, and the convex piece engaging portion of the inner rim and the convex piece engaging portion of the outer rim are engaged in the recess groove of the disk thus formed. Since the flange portion and the engagement portion of these discs, and the engagement portion of the outer rim and the engagement portion of the inner rim are configured to be connected by predetermined fastening bolts and nuts, When a large load due to a cornering force or the like is input to the wheel, the force input from the rim side is transmitted from the engagement portion on the rim side to the engagement portion and the flange portion of the disc. Therefore, the force is not directly transmitted to the fastening bolt. As a result, the fastening bolt, which has a large effect on centrifugal force when the wheel makes a rotational movement, has a small shaft diameter,
Therefore, the weight can be reduced. As a result, it is possible to reduce the cause of the generation of the unbalance mass of the wheel, and it is possible to cope with a high-speed rotation motion.

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 length of the spoke portion 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 flange formed on the outer periphery of the disk is engaged with the engaging portion of the rim, a force from the rim is applied to the bolt head of the fastening bolt. No direct input is made where the contact is made, and stress concentration around the fastening bolt mounting hole (engaging hole) of the engaging portion of the rim is avoided. As a result, the durability of the engaging portion is improved, and the weight of the entire rim including the engaging portion, and thus 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.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc 11 Flange part 111 Engagement hole 12 Recessed groove 15 Engagement part 15 'Engagement part 151 Engagement hole 19 Depression 2 Inner rim 21 Engagement part 211 Engagement hole 3 Outer rim 31 Engagement part 311 Engagement hole 5 Engagement bolt 51 Bolt head 511 Seat (seat surface) 55 Screw 6 Nut

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-45002 (JP, A) JP-A-62-146701 (JP, A) JP-A-5-24405 (JP, A) Actually open Showa 64- 33401 (JP, U) Japanese Utility Model 55501 (JP, U) Japanese Utility Model 1-65702 (JP, U) Japanese Utility Model 6-32105 (JP, U) Japanese Utility Model 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. A flange portion is provided on an outer peripheral portion of the disk, and a recess groove is provided on a circumference of the disk, and the recess portion is engaged with an inner rim of the recess groove.
On the side of engagement, the engagement portion comprising a plurality of convex pieces in parallel with the flange portion is provided, on the inner diameter side of the In'narimu of said rim, projecting pieces shaped engagement portion provided in the disc pair Is formed on the inner rim side of the outer rim which forms the rim portion of the wheel together with the inner rim so as to correspond to the engaging portion formed on the inner rim. A convex piece engaging portion of the inner rim and a convex piece engaging portion of the outer rim are engaged in the recess groove of the disc. An assembly wheel, wherein the engaging portion, the engaging portion of the outer rim, and the engaging portion of the inner rim are joined by predetermined fastening bolts and nuts.