JP2014121893A - Disk for assembly type automobile wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk for assembly type automobile wheel capable of making the wheel which has a multi-piece structure such as two pieces or three pieces look as large as possible visually.SOLUTION: The disk comprises: a central part 102 coupled to a vehicle side; an annular part 104 coupled to a rim side; and plural spokes 110 coupling the central part 102 and the annular part 104. The spokes 110 are disposed so as to overlap a front face side of the annular part 104, and the spokes 110 and the annular part 104 are coupled on a position which is outside in a radial direction of an inner peripheral face 104a of the annular part. (An undercut part is provided.)

Description

  The present invention relates to the technical field of automobiles, and more particularly to an assembly-type automobile wheel represented by a two-piece or three-piece automobile wheel.

  Conventionally, an assembly type automobile wheel 10 as shown in FIG. 5 is known (see Patent Document 1). The assembly type automobile wheel mainly includes a rim 12 for assembling a tire (not shown) and a disk 20 coupled to the rim 12. The disk 20 has bolt holes 16 used for fixing to the vehicle side, an annular portion 19 coupled to the rim 12, and a plurality of spokes 18 extending radially to connect the bolt holes 16 and the annular portion 19. It is provided and is configured in a substantially disk shape.

  In the case of a two-piece structured assembling type automobile wheel, the rim 12 is configured as an integrated structure on the outer side and the inner side (see the left side of FIG. 5). The inner side 12b is configured as a separate structure (see the right side of FIG. 5).

  Assembling of the disk 20 and the rim 12 is performed by coupling with a bolt (pierce bolt) 14 or coupling with a weld 16 at an annular portion 19 of the disk 20.

Japanese Utility Model Publication No. 62-196702

  In recent years, since there is a tendency to prefer a large-diameter wheel, an emphasis is placed on a design that looks visually larger even if the diameter is the same. In an automobile wheel having a one-piece structure, an approach that looks like a larger-diameter wheel by using a technique that extends the spoke to the outer peripheral edge of the outer rim is often used. This is because it is possible to make an impression that the wheel has a large diameter by using the optical illusion by showing the spoke long.

  However, in the assembly-type automobile wheel having a two-piece structure or a three-piece structure, it is necessary to firmly connect the rim and the disk. Therefore, it is inevitable that the disk (annular portion thereof) is placed on the inner peripheral surface side of the rim. There is a problem (that is, the spoke cannot be extended to the outer peripheral edge of the rim), and the length of the spoke is inevitably limited. In particular, since it is a portion that is difficult to see on the back side of the disk, it has been integrally molded from the spoke to the annular portion without any particular ingenuity. That is, it must be a short spoke, and it was difficult to visually show a large diameter.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an assembly-type automobile wheel disk that can be seen more visually in a so-called multi-piece automobile wheel such as a two-piece or three-piece structure.

  In order to solve the above-mentioned problems, the present invention comprises a central part connected to the vehicle side, an annular part connected to the rim side, and a plurality of spokes connecting the central part and the annular part, the spokes being It arrange | positions so that it may overlap with the front side of the said cyclic | annular part, The said spoke and the said cyclic | annular part are connected in the position of the radial direction outer side rather than the internal peripheral surface of the said cyclic | annular part.

  In short, the spoke's rear surface (the back surface of the portion where the spoke and the annular portion overlap) has a so-called “undercut portion” that is wound radially outward from the inner peripheral surface of the annular portion, thereby allowing the spoke to be visually recognized. It will look longer. That is, the longer the spokes appear, the more the automobile wheel incorporating the disc appears "larger in diameter". Furthermore, by turning the back surface of the spoke (the back surface of the portion where the spoke and the annular portion overlap), the spoke can be visually grasped as floating from the annular portion, and the spoke becomes a more three-dimensional design. In addition, since the spokes can bend more flexibly with respect to the annular part by rolling the back side of the spoke (the back side of the part where the spoke and the annular part overlap), the wheel for automobiles incorporating the disk Because the input from the rim side when traveling with the rim is less likely to be biased to the rim and disk connection part such as a specific pierce bolt or a specific welded part (in other words, it is easily dispersed) ), An advantageous effect peculiar to a multi-piece automobile wheel that can prevent problems such as loosening of bolts and peeling of welded parts.

  Further, an undercut portion provided so that the spoke and the annular portion are connected to each other at a position radially outward from the inner peripheral surface of the annular portion extends over the entire circumference so as to go around the annular portion. It is provided.

  With this configuration, a three-dimensional shape in the depth direction (the depth direction when the disc is viewed from the front) appears in the annular portion itself, so that the annular portion is more visually grasped in three dimensions. . In addition, since the molding can give a complicated impression, it is possible to give a visually more luxurious impression.

  Further, the undercut portion is formed so as to extend to a position of a pierce bolt hole formed in the annular portion.

  With this configuration, the head of the pierce bolt to be installed in the pierce bolt hole (more specifically, the disc center side of the pierced bolt head mounted) can be more visually grasped from the undercut portion. It becomes easier and it can be impressed as an annular portion with a visually more complicated molding. Note that when the automobile wheel is viewed from the front, the portion is difficult to visually grasp, but when mounted on the vehicle, the opportunity to see it from obliquely above is overwhelmingly increased. That is, since the undercut extends to the pierce bolt hole, the exposure of the pierce bolt head on the disc center side can be grasped visually.

  By applying the present invention, even in a so-called multi-piece structure automobile wheel such as a two-piece or a three-piece structure, a spoke can be seen three-dimensionally longer, resulting in a visually large diameter and high-class feeling. A certain assembly-type vehicle wheel can be provided.

1 is a front view of an assembly-type automobile wheel disc according to the present invention. It is a rear view of the assembly-type vehicle wheel disc according to the present invention. It is sectional drawing which follows the arrow AA line of FIG. It is a comparison figure for comparing the visual length of the spoke by the presence or absence of an undercut. This is a conventional assembly-type automobile wheel described in Patent Document 1.

  Hereinafter, with reference to the accompanying drawings, a description will be given of an assembly-type automobile wheel 100 which is an example of an embodiment of the present invention. For easy understanding of the drawings, it should be noted that there are portions where the size and dimensions of each portion are exaggerated and there are portions that do not necessarily match the actual product. In addition, each drawing is viewed in the direction of the reference sign, and is expressed as upper, lower, left, right, near, and back based on the direction.

<Configuration of discs for assembly-type automobile wheels>
As shown in FIGS. 1 and 2, a disc for an assembly-type automobile wheel (hereinafter, simply referred to as “disc”) 100 according to the present invention has five bolt holes (wheels) near the center in front view. A central portion 102 having a hole 108 through which a bolt and a nut pass when fixed to a vehicle), eight spokes 110 extending radially outward from the central portion 102 in the radial direction, and a tip of the spoke 110 It is comprised from the ring-shaped annular part 104 of the front view to connect. In this embodiment, these are made of an aluminum alloy and are integrally formed. Reference numeral 112 denotes a design decorative hole.

  The spokes 110 are paired with two thin spokes (a first spoke 110a and a second spoke 110b), and a space 111 is formed between them. Due to the presence of the space 111, the spoke is configured in a more three-dimensional and complicated design.

  A plurality of pierce bolt holes 114 are formed in the annular portion 104. In the present embodiment, a total of 24 pierce bolt holes are provided between each of the spokes 110. In addition, since the bolt holes 115 are provided on the back side of the spoke 110 so as to have the same pitch as the pierce bolt holes 114, they are used evenly when combined with a rim (not shown). It is possible to fasten and fix to.

  Each spoke 110 is arranged as a design that overlaps (on the front side) on the annular portion 104 (actually, it is integrally formed with an aluminum alloy), but the front side and the inner peripheral surface of the annular portion 114. An undercut portion 105 is provided on the side so that a step is provided.

  As shown in FIG. 3, the undercut portion 105 is configured by rolling a part of the back surface of the spoke 110. In other words, the spoke 110 and the annular portion 104 are connected to each other at a position radially outward from the inner peripheral surface of the annular portion 104. In addition, the undercut portion 105 is formed not only on the back surface of the spoke 110 but also on the entire circumference so as to go around the annular portion 104 integrally with this portion. Further, since the undercut portion 105 is configured to extend to the pierce bolt hole 114, when a pierce bolt (not shown) is attached to the pierce bolt hole 114, The undercut portion 105 side of the pierce bolt head is exposed.

<Action and function of discs for assembly-type automobile wheels>
The assembly type vehicle wheel disc 100 according to the present invention is used by being assembled to a rim (not shown) by fastening with bolts (pierce bolts) or welding, as in the conventional example.

  As described above, the disc 100 according to the present invention includes a central portion 102 connected to the vehicle side, an annular portion 104 connected to the rim side, and a plurality of spokes 110 connecting the central portion 102 and the annular portion 104. The spoke 110 is disposed so as to overlap the front surface side of the annular portion 104, and the spoke 110 and the annular portion 104 are coupled at a position radially outward from the inner peripheral surface 104a of the annular portion 104. It is configured. In short, the back surface of the spoke 110 (the back surface of the portion where the spoke 110 and the annular portion 104 overlap) has a so-called “undercut portion 105” that is wound radially outward from the inner circumferential surface 104 a of the annular portion. Thus, the spoke 110 appears visually longer (see FIG. 4). The length L1 of the spoke 110 of the disk 100 on which the undercut 105 is formed is longer than the spoke 210 of the disk 200 on which the undercut is not formed. Apparently longer than the length L2). That is, when the spoke 110 looks long, the automobile wheel incorporating the disk 100 appears to be “larger in diameter”. Furthermore, since the back surface of the spoke 110 (the back surface of the portion where the spoke 110 and the annular portion 104 overlap) is rolled up, the spoke 110 can be visually grasped as floating from the annular portion 104, and the spoke 110 is more three-dimensional. Design. In addition, since the back surface of the spoke 110 (the back surface of the portion where the spoke 110 and the annular portion 104 overlap) is rolled, the spoke 110 flexes (flexes) more flexibly with respect to the annular portion 104. When driving with an automobile wheel incorporating the disk 100, the input during traveling from the rim side is biased to the joint between the rim and the disk 100 such as a specific pierce bolt or a specific weld. Since it becomes difficult (in other words, it is easy to be dispersed), an advantageous effect peculiar to a multi-piece structure automobile wheel that can prevent problems such as loosening of bolts and peeling of a welded portion can be exhibited.

  In addition, an undercut portion 105 provided so that the spoke 110 and the annular portion 104 are connected at a position radially outward from the inner peripheral surface 104 a of the annular portion is provided over the entire circumference so as to make one round of the annular portion 104. As a result, a three-dimensional shape in the depth direction (the depth direction when the disk 100 is viewed from the front) appears in the annular portion 104 itself, so that the annular portion 104 can be more visually grasped in three dimensions. Become. In addition, since the molding can give a complicated impression, it is possible to give a visually more luxurious impression.

  Further, since the undercut portion 105 is formed so as to reach the position of the pierce bolt hole 114 formed in the annular portion 104, the head of the pierce bolt to be attached to the pierce bolt hole 114 (more specifically, The disc center part 102 side of the head of the pierced bolt is attached to the undercut part 105 so that it can be easily visually grasped, and it can be impressed as an annular part 104 with a visually complicated shape. It has become. Note that when the automobile wheel is viewed from the front, the portion is difficult to visually grasp, but when mounted on the vehicle, the opportunity to see it from obliquely above is overwhelmingly increased. That is, when the undercut portion 105 extends to the pierce bolt hole 114, the exposure of the pierce bolt head on the disc center portion 102 side is visually recognized clearly.

DESCRIPTION OF SYMBOLS 100 ... Assembling-type vehicle wheel disc 102 ... Center part 104 ... Ring part 104a ... Ring part inner peripheral surface 105 ... Undercut part 106 ... Center hub hole 108 ... Bolt hole 110 ... spoke 111 ... space 112 ... decoration hole 114 ... pierce bolt hole 115 ... bolt hole

Claims (3)

A center connected to the vehicle side;
An annular part connected to the rim side;
A plurality of spokes connecting the central portion and the annular portion;
The spoke is arranged so as to overlap the front side of the annular portion, and the spoke and the annular portion are connected at a position radially outward from the inner peripheral surface of the annular portion. Disc for assembly-type automobile wheel. In claim 1,
An undercut portion provided so as to connect the spoke and the annular portion at a position radially outward from an inner peripheral surface of the annular portion is provided over the entire circumference so as to make a round of the annular portion. A disc for an assembly-type automobile wheel, characterized in that In claim 2,
The assembly-type vehicle wheel disk, wherein the undercut portion is formed to extend to a position of a pierce bolt hole formed in the annular portion.

Images