Patent Application
20190270336
The present application claims benefit of Chinese Patent Application No. 201820299234.4, filed on Mar. 5, 2018, the contents of which are hereby incorporated by reference in its entirety.
As natural resources shrink, the direction of development of modern automobile industry technology is to further reduce the weight of automobiles, reduce the consumption of fuels and reduce the emission of exhaust.
Aluminum alloy hubs have won the favor of more and more private car owners by attractive appearance, safety, comfort and other characteristics. The lightweight design of the rim of the aluminum alloy hub is to optimize the design of the rim structure under the predetermined use environment and load condition, thereby reducing the weight of the hub and meeting the reliability and basic performance of the hub.
Thus, it has been desirable in the art to balance the weight reduction and the mechanical strength by reducing the weight of the hub as much as possible on the premise that the strength of the aluminum alloy hub is ensured by a specific outer rim weight reduction design.
The disclosure relates to the technical field of automobile parts, and specifically, relates to a weight reduction solution for an aluminum alloy hub with an outer rim having hexagonal weight reduction sockets.
The disclosure provides a rim with weight reduction sockets to overcome the above difficulties.
Unless otherwise stated, the wheel and the rim of the disclosure are made of an aluminum alloy, specifically, are casted with A356.2 aluminum alloy.
Unless otherwise stated, in the disclosure, “wheel” and “hub” are intended to express the same meaning, i.e., a wheel ring made of an aluminum alloy, including a wheel disc and a rim. The wheel disc and the rim may be combined by bolts, welding, snapping or other method, or integrally formed.
In one aspect of the disclosure, provided is a rim with weight reduction sockets, the rim being made of an aluminum alloy and including an inner flange, a middle portion and an outer flange, the inner flange, middle portion and outer flange are all annular and are connected end to end to form a cylindrical rim, in which the middle portion of the rim includes weight reduction sockets; and the weight reduction sockets are of regular hexagons, and are arranged adjacently on the outer side of the middle portion of the rim in the shape of a honeycomb.
In one aspect of the disclosure, the side lengths of the regular hexagons of the weight reduction sockets are 15-40 mm, the depths of the weight reduction sockets are 0.5-2.0 mm, and the distances between the adjacent weight reduction sockets are 3-10 mm
In a preferred aspect of the disclosure, the regular hexagons of the weight reduction sockets are arranged in such a manner that one angle is perpendicular to a wheel disc of a wheel, and 2-4 rows of regular hexagonal weight reduction sockets are arranged at the middle portion of the rim.
In a preferred aspect of the disclosure, the angles of the weight reduction sockets are fillets.
In a preferred aspect of the disclosure, the middle portion of the rim further includes ribbed bulges, and the ribbed bulges are located on the outer side of the middle portion of the rim and are perpendicular to the wheel disc of the wheel.
In a preferred aspect of the disclosure, 4-6 ribbed bulges are uniformly distributed on the circumference of the rim, and each ribbed bulge has a width of 8-14 mm and a height of 1-3 mm.
In a preferred aspect of the disclosure, the aluminum alloy is A356.2 aluminum alloy.
In another aspect of the disclosure, further provided is a wheel having the above rim.
The weight of the hub is reduced by designing the weight reduction sockets in a specific shape for the outer rim of the hub and selecting the size of the weight reduction sockets. In addition, the hub after weight reduction still has excellent mechanical properties, meets the American Wheel Standards of SAE J175 and SAE J328-2005, namely meets the performance requirements for 13-degree impact strength, 90-degree impact strength, radial impact, radial fatigue and bending fatigue, and also meets the requirements of GB/T 5334-2005 and GB/T 15704-1995 for wheel strengths and fatigues.
The embodiments of the disclosure will be described in detail below in combination with the accompanying drawings, in which:
11—rim, 12—flange plate, 13—spoke, 21—weight reduction socket, 22—ridged bulge.
The present embodiment provides a motor vehicle aluminum alloy hub with an outer rim having weight reduction sockets. The hub includes a wheel disc and a rim, and the wheel disc includes a flange plate, a flange plate periphery portion and spokes. Weight reducing sockets are provided on the outer side of the rim of the hub, the single weight reduction socket of the rim is hexagonal, the side length of the regular hexagon is 21 mm, the weight reduction sockets have a depth of 2.5 mm, internal fillets of R2, a rib width of 4 mm and a rib height of 1.5 mm; and four side form joint ridges of 10 mm are provided. By test, the weight of the hub is 11.29 kg in the absence of weight reduction sockets and is reduced by 0.95 kg in the presence of weight reduction sockets, and the weight reduction effect is about 8.4%.
Various properties of the motor vehicle hub of first embodiment were tested. The strengths and fatigues, including 13-degree impact strength, 90-degree impact strength, radial impact, radial fatigue, bending fatigue and the like, of the above wheel were tested in the test center of Dicastal. The tests show that the hub meets American Wheel Standards of SAE J175 and SAE J328-2005, namely meets the performance requirements for 13-degree impact strength, radial fatigue and bending fatigue, and also meets the requirements of GB/T 5334-2005 and GB/T 15704-1995 for wheel strengths and fatigues.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201820299234.4 | Mar 2018 | CN | national |
