JP2000264002A - Wheel for automobile and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To meet an optional design and improve rigidity of a wheel without departure from the wheel. SOLUTION: This wheel comprises a rim 10 and a double disc. The double disc is formed with a back side disc 20 connected to an internal circumference of a drop part 11 of the rim 10 at a part extending to a parallel direction with a wheel axis, and a front side disc 30 undetachably mounted to the rim 10 via a connecting member 40, being arranged on a wheel surface side which is outside of the wheel axis direction than the back side disc 20 and having a thinner thickness than the back side disc 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle wheel and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, in order to enhance the design, a cap (full cap) whose outer diameter extends to the rim is attached to the front side of the disc, and a full cap wheel in which a welding line between the rim and the disc is not visible from the front side. There was something. Since the full cap wheel has a separate full cap from the wheel, it was possible to handle any design.

[0003]

However, the conventional full cap wheel has the following problems. Because the full cap is fitted to the disc,
It may come off during running. Full caps often protrude axially outward from the wheel, making it difficult to respond to any design.
Easy to be scratched. Since the full cap is used only for enhancing the design, it hardly contributes to increasing the rigidity of the wheel, and thus does not increase the riding comfort. An object of the present invention is to provide an automobile wheel that does not come off from the wheel, can cope with any design, and improves the rigidity of the wheel. Another object of the present invention is to provide an automobile wheel which is hardly damaged in addition to the above objects.

[0004]

The present invention to achieve the above object is as follows. (1) a rim and a double disk, wherein the double disk has a portion extending in a direction parallel to the wheel axis direction and a back side disk joined to the inner periphery of the drop portion of the rim at the portion; A vehicle which is disposed on the wheel surface side outside the rear disk in the wheel axial direction, has a smaller thickness than the rear disk, and is irremovably mounted via the rim and a connecting member. For wheels. (2) A rim and a double disk, wherein the double disk is connected to the rear disk joined to the inner periphery of the drop portion of the rim, and is disposed closer to the wheel surface than the rear disk and connected to the rim. A method of manufacturing a vehicle wheel, comprising: a front disk irremovably mounted via a member; a step of joining the connecting member and the rim, and joining the back disk and the rim, Joining a disc and the connecting member to each other. (3) The method according to (2), wherein the joining of the rim and the connecting member and the joining of the front disk and the connecting member are performed by friction welding.

[0005] In the method of manufacturing a vehicle wheel of (1) and the method of manufacturing an automobile wheel of (2), since the back side disk and the front side disk are double disks, the front side disk can be used for any design. Is possible.
Further, since the front disk is irremovably attached to the rim via the connecting member, the front disk does not come off the wheel. In addition, the front disc is permanently attached to the rim, so the rim has the front disc in addition to the back disc, which increases the rigidity of the wheel, thereby improving running stability and riding comfort I do. Further, by flattening the front disk, a structure in which the surface of the front disk does not protrude outward from the wheel in the axial direction can be easily obtained, and scratches can be reduced. In the method for manufacturing an automobile wheel according to the above (3), the joining of the connecting member to the rim and the front disk is performed by friction welding, so that there is little welding burn to the surface of the front disk and the outer periphery of the rim. Bonding after surface treatment such as is also possible.

[0006]

1 and 2 show a first embodiment of the present invention. FIGS. 3 to 5 show a second embodiment of the present invention.
8 to 8 show a third embodiment of the present invention, and FIGS. 9 and 10 show a fourth embodiment of the present invention. Portions common to all embodiments of the present invention are denoted by the same reference numerals throughout all embodiments of the present invention.

First, portions common to the first to fourth embodiments of the present invention will be described with reference to FIGS. The vehicle wheel according to the embodiment of the present invention is made of steel or aluminum or a combination thereof, and includes a rim 10, a back disk 20, a front disk 30, and a connecting member 40 connecting the rim 10 and the front disk 30. , Consisting of Rim 1
0 is made of steel or aluminum, and as shown in FIG.
A drop portion 11 for dropping one bead of the tire when the tire (not shown) is mounted is provided at a central portion in the axial direction, and sidewall portions 13 are provided at both ends of the drop portion 11.
a and 13b are formed continuously. The sidewall portions 13a and 13b and the drop portion 11 are connected by drop connection portions 12a and 12b, respectively. The drop connecting portion is formed in an R shape.

The bead seat portions 14a and 14b extend outward from the respective outer peripheral ends of the sidewall portions 13a and 13b in the rim axial direction.
A flange portion 15b is formed continuously with the outer end of the flange 4b in the axial direction of the rim. The flange portion 15a on the side where the back disk 20 and the front disk 30 are arranged is connected to the other bead seat portion 14a. On the front surface of the side wall 13a of the rim 10 or the front surface of the flange portion 15a, a plurality of connection receiving portions 16 projecting to the front side are formed intermittently in the circumferential direction on substantially the same circumference and integrally with the rim 10. Have been. However, the connection receiving portion 16 may be continuous in the circumferential direction.

The back disk 20 is made of steel or aluminum, and a conventionally used disk can be used. A hub hole 21 is provided in the center of the backside disk 20 in the radial direction.
Are provided around the hub hole 21 and the hub mounting portion 2 is provided.
2 are formed. The hub mounting portion 22 is provided with a plurality of bolt holes 23 at equal intervals in the circumferential direction. By inserting a hub bolt (not shown) extending from a hub (not shown) into the bolt hole 23 and screwing a hub nut (not shown) into the hub bolt, the wheel is fixed to the hub of the axle at the rear disc 20 site.

A hat portion 24 is formed on the outer peripheral portion of the hub mounting portion 22 of the back side disk 20 so as to be convex on the surface side, which is the outer side in the wheel axial direction. A rising portion 26 that rises inward in the rim axial direction is formed at the outer peripheral end of the back disk 20. The rising portion 26 is formed by molding or cutting so as to be in contact with the inner peripheral surface of the drop portion 11 of the rim 10. Hat part 2
A plurality of first decorative holes 25 are provided in the circumferential direction at the connection portion between 4 and the rising portion 26. Back disc 20
The rising portion 26 is inserted or press-fitted into the inner peripheral surface of the drop portion 11 of the rim 10, and the tip of the rising portion 26 and the drop portion 11 are fillet-welded by MAG welding (usually carbon dioxide gas arc welding) or the like. As a result, the rim 10
And joined.

The front disk 30 is not directly attached to the rim 10 but is attached to the rim 10 via a connecting member 40 so as not to be detachable. The front disk 30 is made of steel or aluminum, and is made of the same material as or different from that of the rim 10 or the back disk 20. The front disk 30 has a smaller thickness than the rear disk 20 and does not come into contact with the rear disk.
It is arranged on the wheel surface side which is outside the wheel axial direction from 0. The front disk 30 is a substantially flat disk and extends in a direction perpendicular to the wheel axis direction.

A hole 31 is provided at a portion corresponding to the hub hole 21 and the hub mounting portion 22 of the rear disk 20 at the radial center of the front disk 30. Hole 31
, A second decorative hole 32 is formed in a portion corresponding to the connection portion between the hat portion 24 and the rising portion 26 of the back side disk 20 and a portion corresponding to the outer peripheral end and in the vicinity thereof. When the front disk 30 is a single item, the shape of the second decorative hole 32,
Since the size can be arbitrarily determined by the manufacturer, it is possible to manufacture the front side disk 30 having excellent design. Front disk 3
The outer peripheral end of 0 or its vicinity may or may not be in contact with the rim 10. Front disk 30
Is in contact with the rim 10, the front disk 30
The insertion portion 33 may be formed in a portion that is in contact with the rim 10.

The connecting member 40 connects the rim 10 and the front disk 30. The connecting member 40 is composed of one or more types of components, and in the case of a plurality of types of components, includes a first connecting member 41 and a second connecting member 42. First connecting member 4
1 connects the front surface of the rim 10 and the back surface of the front disk 30 and is arranged continuously or intermittently in the wheel circumferential direction. The first connecting member 41 includes a shaft portion 42 of a second connecting member 42, which will be described later, at a portion that contacts the inner peripheral surface of the rim 10 and a portion that contacts the back surface of the front disk 30.
The connection insertion part 41a into which a can be inserted may be formed.

The second connecting member 42 has a shaft portion 42a and a head portion 42b. The shaft portion 42a can be inserted through the insertion portion 33 of the front disk 30 or the connection insertion portion 41a of the first connection member 41. The head 42b has a diameter that cannot be inserted. When the second connection member 42 is inserted into the insertion portion 33 or the connection insertion portion 41a, the tip of the shaft portion 42a contacts the inner surface of the rim 10, the back surface of the front disk 30, or the first connection member 41, and the head portion 42b It is hooked on the edge of the insertion portion 33 or the connection insertion portion 41a or in the vicinity thereof. When friction joining is performed using the second connecting member 42, the shaft portion 42a
(If the connection receiving portion 16 is formed on the rim 10, the connection receiving portion 16 may be deformed), and its length is reduced by the deformation, and the head 42b is inserted into the insertion portion 33 or the connection insertion portion 41a. The edge of or near it. Therefore, even if the rim 10 and the front disk 30 are not directly welded, the rim 10 and the first connection member 41, and the front disk 30 and the first connection member 41 are not directly welded, the rim 10 and the first connection member 41 are strongly connected.

Next, a method of manufacturing a vehicle wheel according to the present invention, which is common to the first to third embodiments of the present invention, will be described. In the vehicle wheel according to the embodiment of the present invention, one end of the first connecting member 41 or the second connecting member 42 is connected to the sidewall portion 13a or the flange portion 15a of the rim 10.
(For example, the case of joining to the front side surface of the side wall portion 13a is shown). At this time, if the connection receiving portion 16 is formed on the rim 10, the positioning of the connecting member 40 is easy, and the connection receiving portion 16 acts as a receiving portion for friction welding, thereby enabling a strong connection.

After joining the connecting member 40 and the rim 10,
The back disk 20 is inserted or press-fitted into the inner periphery of the drop portion 11 of the rim 10, and the end of the rising portion 26 and the inner peripheral surface of the drop portion 11 are joined by fillet welding by MAG welding (for example, carbon dioxide gas arc welding). . After joining the back disk 20 and the rim 10, the connecting member 40 is connected to the front disk 30.
, For example, by friction welding. At this time, the front disk 30 is arranged and joined without projecting the front disk 30 from the whole wheel in the axial direction and without the front disk 30 contacting the back disk 20. In the above description, the connecting member 40 and the rim 1
Although the rear disc 20 is joined to the rim 10 after joining the back disc 0, the connecting member 40 may be joined to the rim 10 after joining the back disc 20 to the rim 10.

Next, an operation common to all the embodiments of the present invention will be described. Since the front disc 30 and the back disc 20 are double discs, the design is entirely determined by the front disc 30. Therefore, the back disc 20 can be a conventionally used disc. The front disk 30 has a function as a design surface by being disposed on the front surface side which is outside the rear disk 20 in the wheel axial direction, and has a function as a design surface. Overall rigidity can be increased. The front disk 30 protects the hat portion 24 of the rear disk 20 from being damaged, but the rear disk 20 and the front disk 30 are not in contact with each other, and there is a gap between the hat portion 24 of the rear disk 20 and the front disk 30. Since the gap is provided, mud and the like do not collect in the hat portion 24 during use.

Further, in the automobile wheel and the method of manufacturing the same according to the first to third embodiments of the present invention, since the friction welding is used, the front side disk 30 is mounted before the front side disk 30 is assembled.
Even if plating or the like is performed on the surface side of the device, it is possible to assemble the device as it is, and it is not necessary to paint again after the assembly. Further, by making the front disk 30 made of aluminum, it is possible to have a design as an aluminum wheel regardless of the rear disk 20 and the rim 10. further,
By making the surface of the front disk 30 planar,
A sticker (not shown) can be attached to the surface, and high design can be realized.

Next, parts unique to each embodiment of the present invention will be described. In the first embodiment of the present invention, as shown in FIGS. 1 and 2, a connection receiving portion 16 is formed on a side wall portion 13 a of the rim 10, and the wheel surface of the front disk 30 is in the axial direction of the wheel. It is located in the same axial direction over almost the entire surface as the front end, and has a substantially planar shape.
The connecting member 40 is provided intermittently in the circumferential direction, and has both the first connecting member 41 and the second connecting member 42. The first connecting member 41 is formed by bending a thin plate at two places, and a portion parallel to the inner surface of the sidewall portion 13a and the back surface of the front disk 30 is formed, and the connecting insertion portion 41a is formed at that portion. The second connecting member 42
First connecting member 41 and sidewall portion 13 of rim 10
a, and between the first connecting member 41 and the front disk 30.

In the second embodiment of the present invention, as shown in FIGS. 3 to 5, the side wall portion 13a of the rim 10 has a connection receiving portion 16 (the rim 10 is pushed from the front side in a dot-like manner so that the rim 10 is also provided on the back side. (A shape in which a protruding portion is formed).
The front disk 30 is bent inward in the axial direction of the wheel at a position on the way from the hole 31 to the outer peripheral end, and is bent again and extends outward in the radial direction. The vicinity of the outer peripheral end is a bead seat portion of the rim 10. 14a is located at a position in contact with the inner peripheral surface, and a portion extending in the radial direction
Are formed. The connecting member 40 is provided intermittently in the wheel circumferential direction, and has both the first connecting member 41 and the second connecting member 42. First connecting member 4
One end of 1 is joined to the connection receiving portion 16 by friction welding, and the other end is located at the insertion portion 33. As shown in FIGS. 4 and 5, the second connecting member 42 may be joined to the end of the first connecting member 41 on the side not joined to the rim 10, The head 42b may be directly joined to the end of the first connecting member 41 on the side not joined to the rim 10 without the shaft 42a being provided. In the second embodiment of the present invention, since the connecting member 40 can be seen from the front side of the wheel, it is desirable to make the head 42b beautiful.

In the third embodiment of the present invention, as shown in FIGS. 6 to 8, the connection receiving portion 16 is not formed on the side wall portion 13a of the rim 10, and the wheel surface of the front disk 30 is It is located at the same axial position over substantially the entire front surface end of the rim in the axial direction, and has a substantially planar shape.
Further, the connecting member 40 includes only the first connecting member 41 and is provided continuously in the circumferential direction. One end of the first connection member 41 is joined to the inner peripheral surface of the sidewall portion 13a by friction welding, and the other end is joined to the back surface of the front disk 30 by friction welding. The first connecting member 41 is provided as shown in FIG.
As shown in FIG. 5, in order to strengthen the bead seat portion 14a, a tapered portion 41d having a shape smoothly following the inner peripheral shape of the bead seat portion 14a is formed near the end portion on the side joined to the rim 10. Is also good. 7 and 8
It is desirable that a drain hole 41b or a concave portion 41c is formed intermittently in the circumferential direction as shown in FIG.

In the fourth embodiment of the present invention, as shown in FIGS. 9 and 10, a connection receiving portion 16 is formed on the side wall portion 13a so as to protrude in a point-like manner on the inner peripheral side of the rim. The front-side disk 30 is bent inward in the wheel axial direction at a position on the way from the hole 31 to the outer peripheral end, is bent radially outward at the axially inner end, and is bent outward in the axial direction at the inner peripheral portion of the bead seat. The portion extending outward in the radial direction is in contact with the sidewall portion 13a, and the insertion portion 33 is intermittently formed in the circumferential direction. Also, the connecting member 40
Consists of only the second connecting member 42 and is provided intermittently in the circumferential direction. The shaft portion 42a of the second connecting member 42 is joined to the connection receiving portion 16 of the rim 10 by friction welding.

A method of manufacturing a vehicle wheel according to a fourth embodiment of the present invention is as follows. The back side disk 20 is inserted or pressed into the inner periphery of the drop portion 11 of the rim 10,
It is joined by G welding (usually carbon dioxide arc welding). Then, the front side disk 30 is inserted from the front side of the wheel by inserting the insertion portion 33 and the connection receiving portion 16, and the shaft portion 42 a and the connection receiving portion 16 are joined by friction welding using the connecting member 40, and the head portion 42 b has the front side. By pressing the disk 30, a strong connection between the front disk 30 and the rim 10 can be obtained. In the fourth embodiment of the present invention, since the connecting member 40 can be seen from the front side of the wheel, it is desirable to make the head 42b beautiful.

[0024]

According to the method for manufacturing an automobile wheel according to the first aspect and the method for manufacturing the automobile wheel according to the second aspect,
Since it is a double disk of the back disk and the front disk, it is possible to deal with any design by associating the front disk. Further, since the front disk is irremovably attached to the rim via the connecting member, the front disk does not come off the wheel. In addition, the front disc is permanently attached to the rim, so the rim has the front disc in addition to the back disc, which increases the rigidity of the wheel, thereby improving running stability and riding comfort I do. Further, since the front disk is a part of the wheel, a structure in which the surface of the front disk does not protrude outward from the wheel in the axial center direction can be easily obtained, and scratches are reduced. According to the method of manufacturing a vehicle wheel according to the third aspect, since the joining member is joined to the rim and the front side disk by friction welding, welding burn (discoloration) on the surface of the front side disk and the outer peripheral surface of the rim is prevented. Also, bonding after surface treatment such as painting is possible.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a vehicle wheel according to a first embodiment of the present invention and a wheel manufactured by the method of manufacturing the same.

FIG. 2 is an enlarged sectional view showing a connecting member and its vicinity in FIG. 1;

FIG. 3 is a sectional view of a vehicle wheel according to a second embodiment of the present invention and a wheel manufactured by the method of manufacturing the same.

FIG. 4 is an enlarged cross-sectional view showing the connecting member in FIG. 3 when a shaft portion is provided and the vicinity thereof.

FIG. 5 is an enlarged cross-sectional view of the connecting member in FIG. 3 and showing the connecting member in the case where a shaft portion is not provided and the vicinity thereof;

FIG. 6 is a sectional view of an automobile wheel according to a third embodiment of the present invention and a wheel manufactured by the method of manufacturing the same.

FIG. 7 is an enlarged perspective view of the connecting member in FIG. 6 when a hole for draining water is provided.

FIG. 8 is an enlarged perspective view of the connecting member in FIG. 6 when a concave portion is provided.

FIG. 9 is a sectional view of a vehicle wheel according to a fourth embodiment of the present invention and a wheel manufactured by the method of manufacturing the same.

FIG. 10 is an enlarged sectional view showing a connecting member and its vicinity in FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Rim 11 Drop part 20 Back side disk 30 Front side disk 40 Connecting member 41 1st connecting member 42 2nd connecting member 42a Shaft part 42b Head

Claims (3)

[Claims] 1. A rim and a double disc, wherein the double disc has a portion extending in a direction parallel to a wheel axis direction, and the portion is joined to an inner periphery of a drop portion of the rim at the portion. A disc, which is disposed on the wheel surface side that is outside the back disc in the wheel axial direction and has a smaller thickness than the back disc, and is irremovably attached via the rim and a connecting member; Car wheels. 2. A rim and a double disc, wherein the double disc is joined to an inner periphery of a drop portion of the rim, and the rim is arranged on a wheel surface side of the back disc. And a front disk irremovably attached via a connecting member, and a method for manufacturing an automobile wheel, comprising: a step of joining the connecting member and the rim, and joining the back disk and the rim. Joining the front side disk and the connecting member to each other. 3. The method for manufacturing a vehicle wheel according to claim 2, wherein the joining of the rim and the connecting member and the joining of the front disk and the connecting member are performed by friction welding.