KR970004783Y1 - Double-disk structure of wheel - Google Patents

Abstract

None.

Description

Automotive light alloy wheels with dual disc structure

1 is a front view showing an embodiment of a wheel for a vehicle according to the present invention

2 is a cross-sectional view taken along the line 2-2 of FIG.

3 is a cross-sectional view of the wheel attached to the hub on the vehicle side

4th front view of adapter plate

5 is an exploded perspective view of the adapter plate

6 is a front view of another adapter plate that can be used interchangeably with the adapter plate of FIG.

7 is a cross-sectional view showing a first modification of the vehicle wheel according to the present invention

8 to 10 are cross-sectional views showing the second to fourth modifications of the wheel for a vehicle according to the present invention by cutting out the jabban.

11 and 12 are cross-sectional views showing the fifth and sixth modifications of the present invention.

* Explanation of symbols for main parts of the drawings

R: Rim D: Wheel Disc

21: primary disk 22: secondary disk

25,46: boss 27.51: middle section

33,39,48,49 Conical slope 50: Head

The present invention relates to a light alloy wheel for a vehicle having a double disk structure.

In general, light alloy wheels for vehicles in the form of assemblies consisting of replaceable wheel discs and tire support wheel rims mounted to the hub of the axle are known.

It has become common to form a plurality of vent holes distributed in the middle region between the peripheral ribs of the wheel disk and the boss so as to form a pseudo wire spoke shape or a fine shaped pattern on the surface of the wheel disk.

This aesthetically engineered pattern has been the highlight of the sale of replaceable wheels, which tend to be manufactured in a variety of small and medium production systems.

However, a conventional wheel disk used for a light alloy wheel for a vehicle is a single flat disk as described in Japanese Patent Application Laid-Open No. 227501/1984. Therefore, the pattern formed on the disk has no three-dimensional effect and grace.

That is, in designing the modeling pattern in a single structure, the disk itself may be thickened, the part or the whole of the disk may be curled, or the rib may be exposed on the surface of the disk. As a result, the resulting molding design is inevitably forged.

In addition, there are limitations to obtaining interesting and diverse design patterns that will match the design of the vehicle for various vehicles equipped with replaceable wheels.

As a means to solve such a problem, it is worth considering, for example, to install a separate wheel cap on the entire wheel disk. However, even if an aesthetic molding pattern is imparted to the wheel cam with such a configuration, the wheel cam is only an accessory of the wheel disc, since the wheel cap is not attached to the wheel disc later on, and thus the strength of the disc itself is not strong. The wheel disc needs to have sufficient strength to support the wheel rim.

Thus, the inventor of the present invention in Japanese Patent Application Publication No. 185302/1983 has a dual structure consisting of the front and rear walls of the wheel disk structure by integrally configuring these opposing walls in the form of a spindle, it is distributed throughout the front wall It has been suggested to be configured to see the support member for the rear wall through the vent hole.

Despite the manufacture of the wheel disks with light alloys, there is an advantage that a molded pattern representing a three-dimensional, profoundly effecting pseudo-wire spoke shape can be obtained, thus solving some of the problems described above.

However, the wheel discs of the known invention are not so different from the wheel discs of a single structure in that they are single light alloy castings, and cannot be manufactured by another forging processing means effective for improving the strength of the wheel discs.

In addition, since the wheel disk is made of a single part, once manufactured, it is not possible to change the molding pattern of the wheel disk in such a manner as to change the combination of the front and rear barriers.

Therefore, it is not possible to manufacture wheel disks having various modeling patterns in various small and medium production systems.

In Japanese Patent Application Laid-Open Nos. 227501/1984 and 185302/1983, the bosses of the wheel disk are adapted to be attached to the hub of the axle by a plurality of screw fastening devices extending in parallel with the wheel rotation axis.

In this regard, it is conceivable for a means of integrally rotatable attachment of the wheel disc and the boss to the hub of the axle via a separate adapter plate. However, even in this case, there is no change in that a plurality of screw fasteners for attaching the boss of the wheel disc to the adapter plate extend in parallel with the wheel rotation axis.

Thus, assuming that the diameter of the wheel disks is constant, the PCD (Pitch CircIe Diameter) of the screw fastening device that attaches the boss to the hub of the axle directly or indirectly through the adapter plate becomes excessively large. Correspondingly, the boss of the wheel disc should be given the diameter as large as possible because it requires strength for attachment.

If so, the intermediate section between the boss of the wheel disk and the periphery rib is limited in area and correspondingly limited in the degree of freedom to provide the pattern to the region, thus the length of the pseudo wire spokes forming the pattern. Is inevitably reduced.

In the case of means for attaching the boss of the wheel disc directly or indirectly to the hub of the axle through an adapter plate with a screw fastening device extending parallel to the wheel axis of rotation, the horizontal component of the external force exerted on the wheel on the road is Tensile and shear stresses are generated so that the loads acting in all directions cannot be effectively distributed or absorbed.

As a result, when the wheel is to be mounted on a 4WD vehicle or a 4WS vehicle, it is very difficult to set the wheel mounting state to impart durability and to cope with the wheel-needed complex action to change the external force direction on the wheel.

The present invention is devised to solve the problems of the prior art.

In particular, the present invention relates to a vehicle wheel disk made of light alloy, the first object of the present invention is a split (split) form of the wheel disk is composed of two parts of the main disk and a secondary disk disposed opposite thereto, The sub discs are centered on the surface of the main disc at the front, so that these two discs are integrally with each other by a plurality of screw fasteners at the boss and at the periphery by a plurality of screw fasteners separate from the screw fasteners. Can be attached and rotated as a unit, these two disks being substantially spaced on one side with the mirrored surface comprising the axis of rotation a space surrounded by three planes each comprising the middle section of the disk and the wheel axis of rotation; It is arranged to be bridged by a three-dimensional truss, which is a triangular cross section, whereby a conventional wheel disk or this disk It is to provide a wheel disc for a vehicle, unlike a conventional wheel cam mounted on the vehicle, which has sufficient strength to act as a support member and is configured to improve its durability.

The second object of the present invention is that the main disk has a plurality of vent holes in the middle region between the boss and the periphery, which vent holes are distributed as a distinct aesthetic pattern, attached to the main disk and on the front surface of the main disk. The secondary disk, which is superimposed on, has a middle section formed therein with a plurality of venting holes having a different size, shape and distribution than the venting holes of the main disk, thereby forming the three-dimensional three-dimensional truss. In combination with the present invention, there is provided such a wheel disc for a vehicle in which a three-dimensional solid molding pattern appears on the wheel disc even though the wheel disc itself is formed of a light alloy.

The third object of the present invention is that a sub-disc made of separate parts is superimposed on the surface of the main disc at the front, after which these two discs are provided by a plurality of screw fastening devices at the boss and another at the periphery thereof. It is detachably attached to each other by a plurality of screw fastening devices, and the main disk and the sub-disk can be recombined so that the aesthetic pattern imparted by these two disks can be changed at any time to provide a wide variety of aesthetic patterns. It is to provide a wheel disc for a vehicle suitable for small and medium production systems.

In this case, in addition to forming opposing intermediate sections of two disks with many vent holes of different shapes and distributions, the surface of one of these disks is exposed as a cast or untreated surface. The surface of the other disk can be plated, cut, painted or otherwise treated, while leaving the original state as it is, in this way the aesthetic patterns can be more colorful.

The fourth object of the present invention is to form a separate form consisting of two parts besides the main disk and the sub disk facing each other, so that not only the two disks are cast by light alloys, but also forging grooves effective for increasing the strength are different. Providing a wheel disk that enables mass production by processing means, facilitates manufacturing and imparts various shapes in which all or a portion of the wheel rim supporting the tire integrally protrudes from the main disk or the sub disk. will be.

The fifth object of the present invention is that, when two disks are attached to the hub of the axle, when separate adapter plates are arranged between the disks, the superimposed surfaces of the disks are in the form of conical inclined surfaces, and two extra disks. A plurality of separate screw fasteners extending through the conical surface to attach the boss to the adapter plate so that their axes intersect the axis of rotation of the wheel and the heads of the screw fasteners are inclined toward the wheel axis of rotation. The PCD of the fastening devices is reduced by an amount corresponding to the inclination angle, and accordingly, the boss diameter of the secondary disk of the wheel disk is correspondingly reduced, resulting in a relatively large area in the intermediate region between the boss and the periphery, which is not limited. Aesthetic patterns can be added, and the pseudo wire spokes can be extended longer. To provide a vehicle wheel disc.

With the screw fastening device inclined, external forces applied to the wheels horizontally and vertically on the road are effectively distributed or absorbed, so that the wheel discs can be mounted stably and firmly on 4WD and 4WS where the wheels must perform complex movements. have.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 show an assembled vehicle wheel according to the basic embodiment of the present invention. Reference numeral (R) denotes a tire support rim, (D) a wheel disc composed of a main disk 21 which is acted as a support member and is matched on the rear (rear) side of the wheel and a sub-disc 22 arranged on the front surface. Indicates.

The sub disks 22 overlap on the surface of the main disk 21 at the front and are integrally coupled to each other, thereby forming a wheel disk D having a dual structure. The wheel disc D has a wheel rim R to be integrally attached thereto, thereby completing the wheel as a three-wheeled vehicle wheel.

In the main disk 21 of the wheel disk D, the disk is manufactured by forging or other plastic treatment of an aluminum alloy or another metal alloy, and the circular peripheral portion 23 having a predetermined diameter includes a third screw fastening device to be described later. The receiving plurality of screw holes are formed symmetrically about a radial line with respect to each other. Reference numeral 25 denotes a boss arranged in the center of the main disk and detachably attached to the hub via a separate adapter plate A for rotation with the hub 26 of the axle.

Reference numeral 27 denotes an intermediate section between the boss 25 and the peripheral edge 23 of the main disk 21 in which a plurality of vent holes 28 are formed, which are distributed in a predetermined size and shape. The aesthetic pattern on (27) has a pseudo wire spoke shape as shown in FIG.

The cross ribs defining the vent holes 28 on the side are arranged in a mesh shape that expresses the feeling that the wheel is a wire spoke wheel. However, the aesthetic pattern is not limited to such pseudo wire spoke shapes.

An adapter plate A is used to replaceably attach the wheel disk D to the hub 26 of the axle, which is a circle with an axle relief port 29, preferably forged or other plastic working. By a light alloy. Reference numeral 30 denotes a plurality of first screw fastening devices for attaching the adapter plate A to the hub 26 of the axle. As can be seen in FIG. 3, each device 30 consists of a known stud bolt extending integrally forward from the hub and a fastening nut engaged therewith. These threading devices extend parallel to the wheel axis of rotation 0-0.

Reference numeral 31 denotes a plurality of protrusions (total of five in the figure) which protrude integrally forwardly from the surface of the adapter plate and are symmetrically arranged about a radial line with respect to each other, with these protruding portions 31 A plurality of grooves 32 are formed therebetween. Therefore, on the surface of the adapter plate A, the projections 31 and the grooves 32 are alternately arranged.

The upper surfaces (front surfaces) of the protrusions 31 are machined to form concave conical inclined surfaces 33 of the same height with each other, and each of the protrusions 31 has a second screw perpendicular to the conical inclined surface 33. A screw hole 35 for the fastening device 34 is formed.

Each of the second screw fastening devices 34 is in the form of a head bolt as shown in FIG.

On the other hand, on the bottom surface of the groove 32 is a non-conical flat surface 36 continuous with the surface of the adapter plate A, and in the center of the groove 32 is a hole 37 for receiving the first screw fastener. ) Is formed.

In this case, the PCD (pitch circle diameter) of the hole 37 for accommodating the first screw fastening device 30 varies according to the vehicle manufacturer and the vehicle shape. Therefore, as can be seen by comparing FIGS. 4 and 6, an adapter plate comprising various types of adapter plates A is produced, and the holes 37 for receiving the first screw fasteners 30 of the plates. Has a large PCD d1, and the hole 37 for receiving the first screw fastener 30 of the other plate has a small PCD d2. They are optionally used to indirectly attach the wheel disc D to the hub 26 of the axle.

However, it goes without saying that the screw hole 35 for accommodating the second screw fastening device 34 has a constant PCD d3 common to all the adapters A.

With such a configuration, even if the PCD of the first screw fastening device 30 varies according to the vehicle manufacturer and the vehicle type, it is only necessary to change the adapter plate A without having to manufacture and store various types of wheels. If necessary, the wheel disk D can be attached to the hub 26 of the axle. This configuration is very useful.

In any case, the outer circumferential surface of the protrusion 31 extending from the surface of the adapter plate A overlaps and acts as a male slde mating surface 38 and is in intimate contact imparted by a spigot joint structure. Keep it.

When the adapter plate A is attached to the hub 26 of the axle, as can be clearly seen in Figure 3, the flat surface 36 of the adapter plate A is in a plane perpendicular to the wheel axis of rotation 0-0 and concave. The conical inclined surface 33 is in a plane intersecting a predetermined angle with the wheel rotation axis.

Corresponding to the surface shape of the adapter plate A, on the back (rear) of the main disk 21, a plurality of convex conical inclined surfaces 39 adapted to engage with the concave conical inclined surface 33 of the adapter plate A are provided. The inclined surfaces 39 are symmetrically disposed about radial lines. The screw holes 35 accommodating the second screw fastening device 34 of the adapter plate A are aligned with the holes 40 accommodating the fastening device 34 through the center of the convex inclined surface 39. Formed.

The notch 41 which accommodates the 1st screw fastening device 30 is formed in the back surface of the boss | hub 25 of the main disk 21 in the position corresponding to the groove | channel 32 of the adapter plate A, This notch They are alternately arranged with convex conical slopes 39.

That is, the fastening nut coupled to the front of the stud bolt of the first screw fastening device 30 is received in the notch 41 of the main disk 21, thereby, as shown in Figure 3, the main disk ( 21) to prevent interference between the back and the fastening nut.

Looking at the sub disc 22 of the wheel disc D, the sub disc is rejected by forging of light alloys or other plastic working methods and has a diameter substantially the same as that of the main disc 21. Reference numeral 42 denotes the periphery of the secondary disk 22 in which the third screwing device 43 accommodating hole 44, which is aligned with the screw hole 24 of the periphery of the main disk 21, is formed.

Each of the third screw fastening devices 43 is composed of a head bolt and a fastening nut coupled thereto extending in parallel with the wheel rotation axis 0-0. The periphery 23 of the main disk 21, the periphery 42 of the sub disk 22 and the attachment leg 45 extending inwardly from the wheel rim R are detachably attached to each other.

Reference numeral 46 denotes a boss in the center of the sub-disk 22 in which the second screw fastener 34 receiving hole 47 is formed, and the hole 47 indicates the fastening device 34 receiving hole 40. ) Is aligned with

In this case, the surface of the boss 25 of the main disk 21 is machined to form a concave conical inclined surface 48, while the back of the boss 46 of the sub disk 22 is an uneven conical inclined surface 49. It is processed to form The bosses 46 of the sub disc 22 are superimposed on the boss 25 of the main disc 21 at the front side and detachably attached to each other by the second screw fastening device 34.

That is, as shown in FIG. 3, the second screw fastening device 34 each consisting of a head bolt is used for accommodating the accommodating holes 47 of the sub disc 22 and the accommodating holes 35 of the main disc 21. As shown in FIG. After penetrating, it is screwed into the screw hole 35 of the adapter plate A. The second screw fastening device 34 is connected to the conical inclined surfaces 33 and 39 of the adapter plate A and the main disk 21 and to the conical inclined surfaces 48 and 49 of the main disk 21 and the sub disk 22. Since it extends at right angles, the axis PP of each screw intersects the wheel rotation axis 0-0 at a constant angle θ with its screw head inclined toward the wheel rotation axis 0-0.

Therefore, the horizontal and vertical loads applied to the vehicle wheel on the road are effectively dispersed or absorbed due to the second screw fastening device 34 being in an inclined state. When subjected to centrifugal force by the rotation of the wheel, the second screw fastening device 34 in the inclined state is pressed into the screw hole 35 of the adapter plate A, and thus there is no risk of accidental loosening.

Reference numeral 51 denotes an intermediate section between the boss 46 of the secondary disk 22 and the periphery 42, which is opposite the intermediate section 27 of the primary disk 21. The vent holes 52 are formed in a plurality of vent holes 28 different in size, shape and distribution. Thus, the aesthetic pattern that emerges from the middle region 51 of the secondary disk 22 is different from the aesthetic pattern that results from the middle region 27 of the primary disk 21.

That is, in the case of the pseudo wire spoke structure taken in the embodiment, the intersecting ribs defining the vent holes 28 of the main disk 21 on the rear side are passed through the vent holes 52 of the sub disk 22 disposed on the front side. You can earn The mesh pattern is intentionally changed between the two disks 21 and 22. The aesthetic pattern to be imparted to the middle section of the sub disc 22 is not limited to the illustrated pseudo wire spoke structure as long as the aesthetic pattern changes.

In this case, either the surface of the intermediate zone 27 of the primary disk 21 or the surface of the intermediate zone 51 of the secondary disk 22 is either a cast surface, that is, a surface that has not been treated otherwise. While the surface is exposed as, while other surfaces are treated by cutting, painting or other processing to vary the appearance of these surfaces, the aesthetic pattern can be colorful.

The sub discs 22 are superimposed on the surface of the main disc 21 at the front, and these discs are, as described above, by their second screw fasteners 34, at their bosses 46, 25, and At the periphery 42, 23, they are attached to each other by means of a third screw fastener 43, as shown in FIGS. 2 and 3, each comprising an intermediate zone 25, 51 and an axis of rotation 0-0, respectively. The space surrounded by the two planes is bridged by a three-dimensional truss having a substantially triangular cross section with one side of the plane including the wheel rotation axis.

The vertices, or vertices, of each triangle are represented by X, Y, and Z, and a predetermined space is secured between the middle section 27 of the main disk 21 and the middle section 51 of the secondary disk 22. This arrangement, in which the two disks 21 and 22 are attached to each other in an overlapping state to form a three-dimensional truss, is effective in increasing the strength of the structure, and with the three-dimensional effect of solidness expressed from the intermediate zones 27 and 51. Outstanding in aesthetics In addition, reference numeral 53 in FIG. 3 denotes a center cap detachably mounted on the boss 46 of the sub disk 22 from the front side.

1 to 5, the tire support wheel rim R is formed with an attachment leg 45 extending inwardly and engaged with the peripheral portion 23 of the main disk 21. A third screw fastening device 43 for attaching the peripheral portion 23 to the peripheral portion 42 of the secondary disk 22 is used to fix the two disks 21 and 22 to each other. However, the configuration of the first to sixth modifications shown in FIGS. 7 to 12 different from the basic embodiment is applied to the assembled vehicle wheel in which the wheel rim R of the present invention is attached to the wheel disk D. FIG. As long as it can be used.

Referring to the first variant of FIG. 7, the rear rim 54 forming the tire support wheel rim R extends continuously rearward from the periphery 23a of the main disk 21a but is separated from the rear rim 54. The inwardly attached leg 45a of the front rim 55 is held between the periphery 23a of the main disc 21a and the periphery 24a of the sub disc 22a; In this state, the three parts, that is, the main disk and the sub disk, and the front rim are detachably coupled to each other by the third screw fastening device 43a.

That is, the three parts, the main disk 21a, the sub disk 22a, and the front rim 55, which are integrated with the rear rim 54, cooperate with each other to form an assembled vehicle wheel. Reference numeral 56 denotes a sealing ring fixed between the front rim 55 and the rear rim 54.

With this configuration, changing the amount of offset of the wheel can be achieved very simply by replacing the front ring 55 as shown by the dashed line in FIG.

In the second modification of FIG. 8, the rear rim 54b of the wheel rim R extends rearward from the peripheral portion 23b of the main disk 21b, and the front rim 55b of the secondary disk 22b. Continuously integrally extending from the periphery, the two discs 21b and 22b are detachably attached by the third screw fastener 43b at the periphery 23b and 42b so that the wheel is made of two parts.

A third variant is shown in FIG. 9 where the entire diamond support wheel rim R extends continuously from the periphery 23c of the main disk 21c and the periphery 42c of the sub disk 22c is front. Is coupled to the peripheral portion 23c of the secondary disk 22c, and the two disks are detachably coupled to each other by the third screw fastening device 43c at the peripheral portions 23c and 42c. Thus, even in this case, the wheel is made of two parts.

The fourth modification shown in FIG. 10 is a modification of the above-described third modification, and the third screw fastening device 43d attaches two disks 21d and 22d at their peripheral portions 23d and 42d. Is a head bolt that is screwed into the peripheral portion 23d of the main disk 21d without a fastening nut and penetrates the sub disk 22d from the front surface.

In addition, in the basic embodiment of FIGS. 1 to 5, the second screw fastening device 34 for attaching the two disks 21 and 22 to the bosses 25 and 46 has an axis PP of the screw at a predetermined angle. (theta) crosses the wheel rotation axis 0-0 and is inclined so that its head 50 is directed toward the wheel rotation axis. However, as shown in the fifth modification of FIG. 11, the second screw fastening device 34e extends formally with the wheel rotation axis 0-0.

That is, the surface of the boss 25e of the superimposed main disk 21e on the adapter plate A and the sub disk 22e is a non-conical surface perpendicular to the wheel rotation axis 0-0.

In the sixth modification of FIG. 12, the first screw fastening device 30 attached to the adapter plate A and the hub 26 of the axle used in the basic embodiments of FIGS. The second screw fastening device 34f extending for the rotation axis 0-0 and lifelong is composed of a set of stud bolts in the hub 26 of the axle extending forward and a fastening nut coupled thereto, and the second screw fastening device ( 34f is used to simultaneously attach two disks 21f and 22f to the hub 26 of the axle.

As in the fifth and sixth modifications shown in FIGS. 11 and 12, the discs 21e, 22e, 21f, and 22f and the bosses 25e, 46e, 25f, and 46f are parallel to the wheel rotation axis 0-0. Even if it is attached to the hub 26 of the axle directly or indirectly through the adapter plate A by the second screw fasteners 34e and 34f, which extends, the object intended by the present invention can be achieved. However, when the second screw fastening device 34 is inclined at a predetermined angle θ with respect to the wheel rotation axis 0-0 and its head 50 is directed toward the wheel rotation axis, the embodiment shown in Figs. As can be clearly seen from the example, the PGD d3 of the second screw fastening device 34 is reduced by the amount that the head 50 is inclined in the direction of the wheel rotation axis.

As a result, if the diameter of the wheel disk D is constant, the diameter of the boss 46 of the sub disk 22 in the wheel disk D can be minimized. Despite this minimization, sufficient strength to be attached to the hub 26 of the axle by the second screw fastener 34 can be maintained. In addition, the area of the intermediate zone 51 is increased by both sizes corresponding to the above minimization, and the degree of freedom for giving the aesthetic pattern to the intermediate zone 51 is increased. For example, there is an effect that the length of the pseudo wire spoke that extends from the boss 46 to the periphery 42 can be extended. Such an effect can also be achieved in the case of the configuration of the first to fourth modifications shown in FIGS. 7 to 10.

The remaining configurations of the first to sixth modifications shown in FIGS. 7 to 12 are substantially the same as the basic embodiments shown in FIGS. Therefore, the detailed description is omitted except that the alphabet is written in the reference numeral used in the basic embodiment.

In summary, according to the present invention, the sub disk 22 is formed separately from the main disk 21, and the sub disk 22 is overlapped on the surface of the main disk 21 so as to be in the middle of two opposing disks 21 and 22 facing each other. The space surrounded by three planes, each comprising zones 27 and 51 and wheel axis of rotation 0-0, is bridged by a three-dimensional truss having a triangular cross section as indicated by the reference numerals X, Y and Z.

Therefore, unlike the conventional wheel disk of the conventional single structure in which the accessory wheel cap is mounted on the outside, the strength of the wheel disk D serving as a support member for supporting the wheel rim R is remarkably increased.

Contributing to the achievement of this arc is that the secondary disk 22 and the main disk 21 are driven by the second screw fastening device 34 at the bosses 46 and 25 and the third screw at the peripheral edges 42 and 23. This is due to the fastening device 34 being fixed to each other. The increase in wheel strength cannot be achieved by the wheel cap, which is an accessory part to be attached later.

In addition, since the wheel disk (D) of the present invention is a double structure and a three-dimensional truss of a triangular cross section, the two disks (21) having an aesthetic pattern having a three-dimensional sense and elegance of the wire spoke wheel despite the wheel disk is made of light alloy. From the intermediate zones 27, 51 of 22).

In particular, a plurality of vent holes 28, 52 having different sizes, shapes, and distributions are formed in the intermediate zones 27, 51 of the two discs 21, 22, and the sub disc 22 and the main disc 21 Is detachably attached by the second and third screw fasteners 34 and 43. Thus, by manufacturing the main disk 21 and the sub disk 22 having different patterns provided by the vent holes 28 and 52. It is possible to vary the aesthetic pattern appearing on the wheel surface more easily and to more easily harmonize the aesthetic design with the body design.

In addition, since the main disk 21 and the sub disk 22 are independent of each other and cooperate with each other to form a wheel disk D having a dual structure, forging or other plastic working, which is advantageous for increasing the structure and strength, It can be made of light alloy by other processing means. In addition, as shown in the basic embodiment and the first to sixth modifications, the wheel disk may be formed to be integrally integrated with all or part of the tire support wheel rim R without any difficulty. In view of this, the present invention is very useful for manufacturing replaceable wheels as a variety of small scale and medium scale production systems.

Claims (2)

The boss 25 of the wheel disc D is attached to the hub 26 of the axle directly or indirectly via an adapter plate A, the wheel rim R being attached to the periphery 23 of the wheel disc D. And a plurality of vent holes 28 are distributed in the intermediate region 27 between the boss 25 and the periphery 23 so as to give an aesthetic pattern to the surface of the wheel disc D. In the vehicle light alloy wheel of the double disk structure formed, The wheel disc D serves as the main disc 21, and the sub disc 22, which is manufactured separately from the main disc 21, corresponds to the intermediate zone 27 of the main disc 21. A plurality of vent holes 52 different in size, shape, and distribution from the vent holes 28 formed in the main disk 21 are formed in the 51, and the sub disc 22 has an intermediate section 27. 51) and the three enclosed spaces, each containing the wheel rotation axis 0-0, are bridged by a three-dimensional truss having a triangular cross section with one side of the plane including the wheel rotation axis. Overlapped on the surface, The two disks 21 and 22 are rotated by a single unit so that the bosses 25 and 46 can be rotated by a plurality of screw fasteners 34 and at the periphery portions 23 and 42 a plurality of screw fasteners ( 43. A light alloy wheel for a vehicle having a double disc structure, which is detachably attached to each other by means of 43). The method of claim 1, The adapter plate (A) is detachably attached to the hub (26) of the axle by a number of screw fasteners (30) extending in parallel with the wheel axis of rotation 0-0, The bosses 25 of the main disk 21 overlap on the outer surface of the adapter plate A at the front side and the bosses 46 of the sub disc 22 overlap on the boss 25 of the main disk 21 at the front side. But their midpoint surfaces are formed as conical slopes (33, 39, 48, 49), The separate screw fasteners 34, which pass through the conical inclined surfaces 33, 39, 48 and 49, attach the bosses 25 and 46 of the two discs 21 and 22 to the adapter plate A, The light alloy wheel for a vehicle with a double disc structure, characterized in that the head 50 is inclined toward the wheel rotation axis 0-0 such that their respective axes PP intersect the wheel rotation axis 0-0 at a predetermined angle θ.