JPH0653201U - Car disc wheel - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide an automobile disc wheel having a rim-disc connection structure capable of coping with a vehicle model having a large offset amount and a brake heat radiating means having a high cooling effect. By connecting a disc connecting portion 13 extending inward in the radial direction from a front flange surface of a rim 10 to a disc 20 via a bolt and a nut 30, a disc wheel adapted to a vehicle type having a large offset amount can be obtained. Rim 10
The brake caliper K is arranged by the heat dissipation ribs 16 radially provided in the annular recess 15 between the disc connecting portion 13 and the well rising portion 14 and the heat releasing window holes 17 formed in the disc connecting portion 13. The hot air generated by the heat generated by the brake in the space 18 is stirred and cooled, and is discharged to the outside.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disc wheel which has a high effect of cooling the heat generated by a brake of an automobile and is suitable for a vehicle model having a large offset amount.

[0002]

[Prior art]

 Among conventional vehicle wheel wheels for automobiles, as one having a rim / disk connecting structure with a large offset amount, an example of a two-piece structure product is shown in FIG. 3. This disc wheel is composed of a bead seat portion 2 on the surface side of the rim 1 and a base end of a disc fitting joint portion 4 which protrudes outward from the root portion of the well rising portion 3 substantially in parallel to the bead seat portion 2 in the rim width direction. The portion forms an annular groove 5 that opens outward in the rim width direction. Further, the disk 6 is provided with a plurality of window holes 7 at intervals in the circumferential direction around the axle, and an annular rib 8 is provided on the back side.

[0003]

[Problems to be solved by the device]

 In the conventional disk wheel for this type of vehicle, the depth of the annular groove 5 increases as the offset amount increases, so that it takes time and effort to clean the dirt adhering to the groove 5. In particular, it is extremely difficult to completely remove dirt on the well valve 3 where the tire valve (not shown) is attached, so it is said that if it is used for a long time, the appearance will be impaired. The problem derives.

A brake caliper K is arranged in a space 9 formed on the rear surface side (inner surface side of the rim 1) of the vehicle disk wheel, so that high-temperature air generated by the heat generated by the brake is transferred to the window hole 7. The ribs 8 are used to release the heat, but such a heat radiating means cannot be expected to have a satisfactory cooling effect, and therefore it is desired to develop a more effective heat radiating means.

The present invention solves the above problems and provides a disc wheel for an automobile, which is provided with a connection structure of a rim and a disc capable of coping with a demand, and a heat radiation means for heat generation of a brake. To aim.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, a rim of an automobile disc wheel is provided with a disc connecting portion extending radially inward from a front flange surface and connected to a disc, and the disc connecting portion and a well rising portion of the rim are provided. A heat-dissipating rib that radially divides the recess is provided in the annular recess formed between the two, and a heat-dissipating window hole that allows the space on the back side of the disk wheel to communicate with the outside air through each of the defined recesses. It is opened in the disc connection section.

[0007]

[Action]

 The disc wheel for an automobile of the present invention has the disc connecting portion extending radially inward from the front flange surface of the rim, so that it is easy to cope with a vehicle model having a large offset amount and the conventional rim width outward direction. Instead of the annular recessed groove that opens inwardly, an annular recessed portion that opens inward in the radial direction is formed.

Further, in the disc wheel for an automobile of the present invention, high-temperature air generated by the heat generated by the brake is stirred and cooled by the heat-radiating ribs of the annular recess and the heat-radiating window holes of the disc connecting portion, and then discharged to the outside. To be done.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 of the drawings. The figure shows an embodiment of a disc wheel having a two-piece structure. The rim 10 is provided with a disc connecting portion 13 that extends inward in the radial direction from the surface of the bottom portion of the front surface side flange portion 11 on the bead seat portion 12 side, and the disc connecting portion 13 is fastened with the disc 20 and a bolt / nut 30. They are integrated into a disc wheel.

In this way, between the disc connecting portion 13 of the rim 10 and the well rising portion 14 facing the disc connecting portion 13, a bead seat portion 12 serves as a bottom surface and a recessed portion 15 which opens radially inward is formed in an annular shape. To be done. Radiating ribs 16 are provided on the inner surface of the recess 15 at appropriate intervals in the circumferential direction, and the recess 15 is radially partitioned by the radiating rib 16.

Further, in the disc connecting portion 13 of the rim 10, an elongated heat radiating window hole 17 is opened along the peripheral edge of the bead seat portion 12 side between the adjacent heat radiating ribs 16, and the disc wheel is formed. The space portion 18 on the back side of is communicated with the outside air through the respective recessed portions 15 that are radially defined. By providing the above-described rim / disk connecting structure, not only the position of the disk connecting portion 13 of the rim 10 in the rim width direction does not change from the position of the conventional large-offset disk wheel, but also the surface Since the front flange surface of the front edge of the side flange portion 11 can be displaced outward in the rim width direction, it is possible to easily cope with a vehicle model having a large offset amount.

Further, in this disc wheel, since the annular recess 15 formed between the disc connecting portion 13 of the rim 10 and the well rising portion 14 communicates with the space portion 18 on the rear side of the disc wheel, The high temperature air heated by the heat of the brake in which the caliper K is arranged in the space 18 is agitated and cooled by the heat dissipation ribs 16 of the annular recess 15, and the annular recess 15 is communicated with the outside air. The heat is released to the outside from the heat dissipation window 17 of the disk connecting portion 13.

The present invention is not limited to the disc wheel having the two-piece structure described in the above embodiment, and is similarly applied to the disc wheel having the one-piece structure in which the rim and the disc are integrally molded. be able to.

[0014]

As described above, according to the present invention, by providing the disc connecting portion extending inward in the radial direction from the front flange surface of the rim, the disc wheel corresponding to the vehicle model with a large offset amount is provided. In addition to being easy to obtain, the conventional annular groove that opens outward in the rim width direction is not formed, so that the problem due to involuntary cleaning is solved.

Further, according to the present invention, a heat dissipation rib radially provided in an annular recess formed between the disc connecting portion of the rim and the well rising portion, and a heat releasing window provided in the disc connecting portion. The holes allow the high-temperature air in the space where the brake is arranged to be agitated and cooled and released to the outside, so that the heat dissipation efficiency is high and a sufficiently satisfactory cooling effect can be contained.

[Brief description of drawings]

FIG. 1 is a partial front view of a front surface side showing an example of an automobile disk wheel of the present invention.

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

FIG. 3 shows an example of a conventional automobile disc wheel.
It is sectional drawing shown corresponding to.

[Explanation of symbols]

 10 Rim 11 Front Side Flange 13 Disc Connection 14 Well Rise 15 Circular Recess 16 Heat Dissipation Rib 17 Heat Dissipation Window 18 Space 20 Disc

Claims (1)

[Scope of utility model registration request] 1. An annular ring formed between a disc connecting portion of a rim and a well rising portion, the disc connecting portion extending radially inward from a front flange surface and connected to a disc on a rim of an automobile disc wheel. A heat-radiating rib that radially divides the concave portion is provided in the concave portion, and a heat-radiating window hole that allows the space on the back side of the disc wheel to communicate with the outside air through the divided concave portions is formed in the disc connecting portion. An automobile disc wheel.