Patent Application
20190389244
The present application claims benefit of Chinese Application No. 201810666438.1, filed on Jun. 26, 2018, the contents of which are hereby incorporated by reference in its entirety.
Aluminum alloy hubs have won the favor of more and more private car owners by attractive appearance, safety, comfort and other characteristics. Since the aluminum alloy hubs are light and high in manufacturing precision, the deformation is small during high-speed rotation, and the inertial resistance is also small. The aluminum alloy hubs have the metal characteristics of absorbing vibration and rebounding force, and have the advantages of high dimensional accuracy, high roundness, small yaw and good balance after being machined by numerical control machines, so that cars are driven smoothly and comfortably.
When an aluminum alloy hub of a motor vehicle is designed, the design result of a front wheel disc may be slightly different from the optimal weight result. When the front wheel disc covers a too large area, the overall wheel has an excessive wheel disc weight, which offsets the advantage of the aluminum alloy hub in weight reduction. In order to overcome this problem, weight reduction sockets are usually provided on the back of spokes of the wheel disc to reduce the overall weight of the wheel disc. However, the setting of the weight reduction sockets may affect the mechanical strength of the aluminum alloy hub, especially the impact strength and the fatigue performance, and even cause the aluminum alloy hub to fail in relevant tests.
Thus, it has been desirable in the art to balance the weight reduction and the mechanical strength by designing appropriate weight reduction sockets for the front side design of the specific wheel disc to reduce the weight of the hub as much as possible on the premise that the strength of the aluminum alloy hub is ensured.
The present disclosure relates to the technical field of automobile parts, and specifically relates to a motor vehicle aluminum alloy hub having weight reduction sockets at the back cavity.
Accordingly, the objective of the present disclosure is to provide a hub including weight reduction sockets on the back of spokes.
In one aspect of the present disclosure, a motor vehicle aluminum alloy hub having weight reduction sockets at the back cavity is provided, the hub including a wheel disc and a rim; the rim includes a valve hole; the wheel disc includes a flange, a flange peripheral portion and spokes, and the outer side of the flange is connected to the spokes and the flange peripheral portion; six bolt holes are uniformly distributed in the flange; six decorative holes are uniformly distributed in the flange; one end of each spoke is connected to the outer side of the flange, and the other end is connected to the rim; the wheel disc includes 15 sets of spokes, and one side of the two adjacent sets of spokes facing the flange includes the flange peripheral portion; in which:
The spoke has a lowered slope surface from the flange to the rim; the flange peripheral portion, the adjacent spokes and the edge of the rim jointly surround a first window of a round rectangle; totally 15 windows are formed in sequence; the outer edge of each window includes a front plane surface in a round rectangle shape;
The spoke includes a spoke weight reduction socket on one side of the back cavity, the spoke weight reduction socket is conical, the two ends of the spoke weight reduction socket are 5-10 mm away from the edge of the spoke, and the cross section of each edge of the cone is inverted trapezoidal; the depth of the spoke weight reduction socket is 3-6 mm, and the thickness of the spoke at the bottom of the spoke weight reduction socket is 15-18 mm; on the back of the spoke, the outer side of the spoke weight reduction socket includes a back plane surface, having a width of 5-10 mm.
The spoke includes a flange peripheral portion weight reduction socket communicating with the spoke weight reduction socket on the back of the flange peripheral portion, the flange peripheral portion weight reduction socket is connected to the spoke weight reduction socket, the depth of the flange peripheral portion weight reduction socket is 3-6 mm, and the thickness of the wheel disc at the bottom of the flange peripheral portion weight reduction socket is 25-30 mm; on the back of the flange peripheral portion, the outer side of the flange peripheral portion weight reduction socket includes a back plane surface, having a width of 6-12 mm. The flange includes flange weight reduction sockets between the bolt holes on one side of the back cavity, the surface of the flange weight reduction socket is a curved surface obtained by parabolic rotation, the depth of the flange weight reduction socket is 15-20 mm, and the thickness of the flange at the deepest position is 17-20 mm; and the center of the flange weight reduction socket has a decorative hole reaching the front side and having a diameter of 7-12 mm.
In a preferred aspect of the present disclosure, the angles between the spokes and the plane of the circumference of the wheel disc flange are 110 degrees, and the ends of the spokes are 15 mm lower than the spoke flange.
In a preferred aspect of the present disclosure, the front surface of the flange is a cambered surface, ending at the windows, and the highest position is 3-4 mm away from the surface.
In a preferred aspect of the present disclosure, the flange includes six bolt holes.
In a preferred aspect of the present disclosure, the flange includes six decorative holes.
In a preferred aspect of the present disclosure, each window has a length of 150-170 mm and a width of 20-30 mm.
In a preferred aspect of the present disclosure, the two ends of the spoke weight reduction socket are 6 mm away from the spoke edge; the angle between the outer edge of the spoke weight reduction socket and the surface of the wheel back cavity is 105 degrees, and the angle between the inner edge of the spoke weight reduction socket and the surface of the wheel back cavity is 110 degrees.
In a preferred aspect of the present disclosure, the depth of the weight reduction sockets on the back of the flange is 16 mm, and the thickness of the flange at the deepest position is 19 mm.
Hub back cavity weight reduction sockets in a specific shape are designed for the front side of the specific hub, and the sizes of the weight reduction sockets are selected, thereby reducing the weight of the hub. In addition, the hub after weight reduction still has excellent mechanical properties, meets American wheel SAE J175 and SAE J328-2005 standards, namely meet the performance requirements for 13-degree impact strength, radial fatigue and bending fatigue, and can also meet the requirements of national standards GB/T 5334-2005 and GB/T 15704-1995 for wheel strengths and fatigues.
The present embodiment provides a hub including weight reduction sockets on the back of spokes. The hub includes a wheel disc and a rim, the wheel disc includes a flange, a flange peripheral portion and spokes, and the outer side of the flange is connected to the spokes and the flange peripheral portion; one end of each spoke is connected to the outer side of the flange, and the other end is connected to the rim; the wheel disc includes 15 sets of spokes, and one side of the two adjacent sets of spokes facing the flange includes the flange peripheral portion.
The spoke has a lowered slope surface from the flange to the rim; the flange peripheral portion, the adjacent spokes and the edge of the rim jointly surround round rectangles to form 15 windows; and the outer edge of the window includes a front plane surface of a round rectangle shape. The narrow plane of the front surface of the hub has a width of 5 mm, the spoke weight reduction socket is groove-shaped and is lowered in a slope shape, the angle between the slope and the plane is 110°, the depth of the slope is 16 mm, the front surface of the flange is cambered surface, the cambered surface stops at the windows, and the distance between the highest position of the flange and the surface is 3.5 mm.
The spoke includes a spoke weight reduction socket on one side of the back cavity, the spoke weight reduction socket is conical, the two ends of the spoke weight reduction socket are 6 mm away from the edge of the spoke, and the cross section of each edge of the cone is inverted trapezoidal; the depth of the spoke weight reduction socket is 4-5 mm, and the thickness of the spoke at the bottom of the spoke weight reduction socket is 27 mm; the spoke weight reduction socket is in a “cone” shape with two sides 6 mm away from the edge of the spoke, the angle between the outer edge of the weight reduction socket and the surface of the wheel back cavity is 105°, and the angle between the inner edge of the weight reduction socket and the surface of the wheel back cavity is 110°, and the depth of the socket is 4.5 mm.
The spoke includes a flange peripheral portion weight reduction socket communicating with the spoke weight reduction socket on the back of the flange peripheral portion, the flange peripheral portion weight reduction socket is connected to the spoke weight reduction socket, the depth of the flange peripheral portion weight reduction socket is 4 mm, and the thickness of the wheel disc at the bottom of the flange peripheral portion weight reduction socket is 28 mm; on the back of the flange peripheral portion, the outer side of the flange peripheral portion weight reduction socket includes a back plane surface, having a width of 7 mm;
The flange includes flange weight reduction sockets between bolt holes on one side of the back cavity, the surface of the flange weight reduction socket is a curved surface obtained by parabolic rotation, the depth of the flange weight reduction socket is 17 mm, and the thickness of the flange at the deepest position is 19 mm; and the center of the flange weight reduction socket has a decorative hole reaching the front side and having a diameter of 9 mm.
The hub is 15.6 kg in the absence of weight reduction sockets, but 12.1 kg in the presence of the weight reduction sockets, so the weight reduction effect is 22%.
Various properties of the motor vehicle hub of Embodiment 1 were tested. The strengths and fatigues, including 13-degree impact strength, radial fatigue, bending fatigue and the like, of the wheel were tested in the test center. The tests show that the hub meets American wheel SAE J175 and SAE J328-2005 standards, namely meet the performance requirements for 13-degree impact strength, radial fatigue and bending fatigue, and can also meet the requirements of national standards GB/T 5334-2005 and GB/T 15704-1995 for wheel strengths and fatigues.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201810666438.1 | Jun 2018 | CN | national |
