An improved aluminum alloy wheel hub for motor vehicle

Abstract

The present invention provides an improved aluminum alloy wheel hub for motor vehicles, wherein the wheel spokes of the improved aluminum alloy wheel hub for motor vehicles define a plurality of circular windows, the wheel spokes are located between the flange and the outer wheel lip bead seat, and the upper surface of the wheel spokes includes a wheel spoke conical surface A, a wheel spoke connecting arc surface B and a flange outer end surface C. The advantages of the improved aluminum alloy wheel hub for motor vehicles of the present invention are: (1) more uniform stress distribution; (2) lower overall stress level of the wheel hub; (3) lower overall mass of the wheel hub; and (4) higher reliability of the wheel hub.

Description

Technical Field

[0001] The invention relates to the technical field of motor vehicle parts, and in particular to an improved motor vehicle aluminum alloy wheel hub. Background Art

[0002] Wheel hub, also known as wheel rim, is a cylindrical part of the tire inner profile that supports the tire and is centrally mounted on the shaft. Common automobile wheel hubs include steel wheel hubs and aluminum alloy wheel hubs. Steel wheel hubs have high strength and are often used in large trucks; however, steel wheel hubs are heavy and have a single appearance, which does not conform to today's low-carbon and fashionable concepts and are gradually being replaced by aluminum alloy wheel hubs. Compared with steel automobile wheels, aluminum alloy wheel hubs have obvious advantages: low density, about 1 / 3 of steel, which means that aluminum alloy wheel hubs of the same volume will be 2 / 3 lighter than steel wheel hubs. Statistics show that if the weight of the entire vehicle is reduced by 10%, fuel efficiency can be increased by 6%~8%, so the promotion of aluminum alloy wheel hubs is of great significance for energy conservation, emission reduction and low-carbon life.

[0003] In commercial vehicles, such as buses and vans, steel wheels or aluminum alloy forged wheels are often used. However, the existing aluminum alloy forged wheels have the characteristics of insufficient strength and insignificant weight reduction effect. In order to realize the wide application of aluminum alloy forged wheels, it is necessary to find a better wheel configuration structure. Summary of the invention

[0004] Therefore, an object of the present invention is to provide an improved aluminum alloy wheel hub for motor vehicles, thereby overcoming the above problems.

[0005] Unless otherwise specified, in the present invention, "aluminum alloy" refers to an alloy with aluminum as the main alloy material, such as A356.2 aluminum alloy, 7 series aluminum alloy, 8 series aluminum alloy, etc. As long as the aluminum alloy has been used for forging, casting or other forming methods of aluminum alloy wheels in the prior art, it is considered that the aluminum alloy can be selected for the aluminum alloy wheel.

[0006] Unless otherwise specified, in the present invention, the terms "hub" and "wheel", "rim" and the like are used interchangeably, and are intended to refer to a device mounted on the front and rear axles of a motor vehicle for power transmission and rolling forward. The outer side of the "hub" generally includes a part made of rubber, resin, leather, plastic, braid or other materials, or a composite of the above materials, such as a tire.

[0007] Unless otherwise specified, the "wheel hub" described in the present invention also includes wheels installed at other locations of the motor vehicle, such as the rear of the vehicle body or under the trunk, for decoration or spare replacement purposes, rather than directly installed on the front and rear axles of the motor vehicle.

[0008] Unless otherwise specified, within the present invention, "motor vehicle" refers to a man-made device that runs on the ground on a wheeled structure in all or part of its functional mode. In a narrow definition of the term, "motor vehicle" includes various vehicles such as compact passenger cars, SUVs, MPVs, sports cars, large and medium-sized trucks, vans, pickups, trucks, vans, tractors, trailers, mining cars, etc. In a broad definition of the term, "motor vehicle" also includes aircraft that need to glide takeoff and landing on the ground, planetary or satellite exploration equipment such as lunar rovers, amphibious vehicles, military armored vehicles, movable bases for large equipment, beam transporters, tanks, steam locomotives, electric locomotives, diesel locomotives, and manual rail engineering vehicles. In other definitions of terms, "motor vehicle" also includes a roller device fixed to the ground or device. In the environment of the roller device, the rotation of the wheel hub drives the belt or chain that is close to it and drives the belt or chain to move.

[0009] In one aspect of the present invention, the "motor vehicle aluminum alloy wheel hub" includes a flange, a spoke and a rim; the flange is cylindrical and has flange bolt holes that penetrate the bottom surface of the cylinder evenly distributed; the inner end of the spoke is connected to the flange, and the outer end is connected to the rim through a bead seat; the rim includes an outer wheel lip, an outer wheel lip bead seat, a wheel well, a rim middle section, an inner wheel lip bead seat and an inner wheel lip that are connected in sequence end to end along a direction perpendicular to the plane where the flange is located; the outer wheel lip extends along the outer wheel lip bead seat in a direction away from the flange, and The end includes an outer wheel rim; the outer wheel lip bead seat is connected to the outer wheel lip in the outer direction of the wheel disc, is connected to the wheel disc on the side, and is connected to the wheel well in the inner direction of the wheel disc; the wheel well is conical or cylindrical, and is connected to the middle section of the rim in the outer direction of the wheel disc; the middle section of the rim is conical or cylindrical, and is connected to the inner wheel lip bead seat in the outer direction of the wheel disc; the inner wheel lip bead seat is recessed relative to the inner wheel lip, and is connected to the inner wheel lip in the outer direction of the wheel disc; the inner wheel lip extends in a direction away from the center axis of the flange, and includes an inner wheel rim at the end.

[0010] In one aspect of the present invention, an improved aluminum alloy wheel hub for motor vehicles is provided, wherein the spokes of the improved aluminum alloy wheel hub for motor vehicles define a plurality of circular windows, the spokes are located between the flange and the outer lip bead seat, the upper surface of the spokes includes a spoke conical surface A, a spoke connecting arc surface B and a flange outer end surface C, the flange outer end surface C is an annular plane, and has a length of 175 to 235 mm from the center point of the flange to the upper edge of the spoke connecting arc surface B, and has an inner diameter of 95 to 152 mm; the spoke conical surface A, the spoke connecting arc surface B and the flange outer end surface C are connected to the aluminum alloy wheel hub of the motor vehicle by a method In the cross section on the plane of the central axis of the flange, the projection of the spoke connecting arc surface B is an arc with a diameter of 72.63 mm and an arc angle of 50 to 65 degrees, and the two ends of the spoke connecting arc surface B are tangent to the outer end face C of the flange and the spoke conical surface A respectively; the semi-apex angle of the spoke conical surface A is 25 to 35 degrees, the diameter of the circle where the upper edge of the spoke conical surface intersects with the plane parallel to the flange plane is 455 to 475 mm, and the diameter of the circle where the lower edge intersects with the plane parallel to the flange plane is 500 to 520 mm; the lower surface of the spoke is set so that the spoke has a thickness of 18.30 to 29.30 mm.

[0011] In a preferred aspect of the present invention, the semi-apex angle of the spoke cone surface A is 29 degrees.

[0012] In a preferred aspect of the present invention, the radius of the projected arc of the spoke connecting arc surface B is 36.32 mm, and the arc angle is 57.8 degrees.

[0013] In a preferred aspect of the present invention, the minimum distance between the projection line segment of the flange outer end surface C and the chamfer of the flange bolt hole is 20.93 mm.

[0014] In a preferred aspect of the present invention, the flange of the motor vehicle aluminum alloy wheel hub is composed of a hollow cylinder with an outer diameter of 380-450 mm, an inner diameter of 200-270 mm, and a thickness of 20-30 mm, and the flange includes 8-12 flange bolt holes with a diameter of 20-30 mm, and the flange bolt holes are evenly distributed on the circumference of the flange.

[0015] In a preferred aspect of the present invention, the flange of the aluminum alloy wheel hub of the motor vehicle is composed of a hollow cylinder with an outer diameter of 405.85 mm, an inner diameter of 248.2, and a thickness of 23 mm, and the flange includes 8-12 flange bolt holes with a diameter of 20-30 mm.

[0016] In a preferred aspect of the present invention, the line segments obtained by the intersection of the lower surface of the spoke and the plane of the center axis of the flange are connected by tangent arcs.

[0017] In a further preferred aspect of the present invention, the tangent arcs are composed of six arcs, wherein arcs H, arcs I, arcs J, arcs K, arcs L, and arcs M extend from the back of the flange to the rim in sequence, and: arc H is concave toward the back of the wheel disc, with a radius of 8.2-9.5 mm and an arc angle of 16.5-30.5 degrees; arc I is concave toward the front of the wheel disc, with a radius of 6.0-8.0 mm and an arc angle of 70.5-95.5 degrees; arc J is concave toward the front of the roulette wheel, with a radius of 340~380mm and an arc angle of 0.5~2.5 degrees; arc K is convex toward the back of the roulette wheel, with a radius of 200~220mm and an arc angle of 2.5~7.5 degrees; arc L is convex toward the back of the roulette wheel, with a radius of 125~140mm and an arc angle of 8.0~11.5 degrees; arc M is convex toward the back of the roulette wheel, with a radius of 95~110mm and an arc angle of 8.5~18.5 degrees.

[0018] In a further preferred aspect of the present invention, arc H is concave toward the back of the roulette wheel, with a radius of 8.75 mm and an arc angle of 18.5 to 20.5 degrees; arc I is concave toward the front of the roulette wheel, with a radius of 7.67 mm and an arc angle of 80.5 to 85.5 degrees; arc J is concave toward the front of the roulette wheel, with a radius of 358.7 mm and an arc angle of 1.4 to 1.8 degrees; arc K is convex toward the back of the roulette wheel, with a radius of 213.5 mm and an arc angle of 3.5 to 4.2 degrees; arc L is convex toward the back of the roulette wheel, with a radius of 133.82 mm and an arc angle of 9.0 to 10.0 degrees; arc M is convex toward the back of the roulette wheel, with a radius of 103.52 mm and an arc angle of 12.5 to 14.5 degrees.

[0019] In a further preferred aspect of the present invention, three specific wheel hub structures are provided, and the improved aluminum alloy wheel hub for motor vehicles is selected from the following ones.

[0020] (A) The wheel spoke 3 of the improved aluminum alloy wheel hub for motor vehicles defines a plurality of circular windows, the wheel spoke is located between the flange and the outer wheel lip bead seat, the upper surface of the wheel spoke 3 includes a wheel spoke conical surface A, a wheel spoke connecting arc surface B and a flange outer end surface C, the flange outer end surface C is an annular plane, the flange 2 of the aluminum alloy wheel hub for motor vehicles is composed of a hollow cylinder with an outer diameter of 405.85 mm, an inner diameter of 248.2 and a thickness of 23 mm, and the flange 2 includes 10 holes with a diameter of 26 mm. mm flange bolt hole 1; in the cross section of the spoke cone surface A, the spoke connection arc surface B and the flange outer end surface C and the motor vehicle aluminum alloy wheel hub on the plane passing through the central axis of the flange 2, the projection of the spoke connection arc surface B is an arc with a diameter of 36.32 mm and an arc angle of 57.8 degrees, and the two ends of the spoke connection arc surface B are tangent to the flange outer end surface C and the spoke cone surface A respectively; the semi-vertex angle of the spoke cone surface A is 29 degrees, and the diameter of the circle where the upper edge of the spoke cone surface intersects with the plane parallel to the flange plane is 465.35 mm The diameter of the circle where the lower edge intersects with the plane parallel to the flange plane is 511.04 mm; the lower surface of the spoke 3 is set so that the spoke has a thickness of 23.96 mm; the line segments obtained by the intersection of the lower surface of the spoke and the plane of the center axis of the flange are connected by tangent arcs; the tangent arcs are composed of six arcs, among which arc H, arc I, arc J, arc K, arc L, arc M extend from the back of the flange to the rim in sequence, arc H is concave toward the back of the wheel disc, and the radius is 8.75 The arc line I is concave toward the back of the roulette wheel, with a radius of 7.67 mm and an arc angle of 82.79 degrees; the arc line J is concave toward the front of the roulette wheel, with a radius of 358.7 mm and an arc angle of 1.67 degrees; the arc line K is convex toward the back of the roulette wheel, with a radius of 213.5 mm and an arc angle of 3.78 degrees; the arc line L is convex toward the back of the roulette wheel, with a radius of 133.82 mm and an arc angle of 9.55 degrees; the arc line M is convex toward the back of the roulette wheel, with a radius of 103.52 mm and an arc angle of 14.35 degrees;

[0021] The difference between (B) and A is that arcs H, I, J, K, L and M extend from the back of the flange to the rim in sequence. Arc H is concave toward the back of the wheel disc, with a radius of 8.75 mm and an arc angle of 25.21 degrees; Arc I is concave toward the back of the wheel disc, with a radius of 7.67 mm and an arc angle of 90 degrees; Arc J is concave toward the front of the wheel disc, with a radius of 358.7 mm and an arc angle of 1.14 degrees; Arc K is convex toward the back of the wheel disc, with a radius of 213.5 mm and an arc angle of 3.42 degrees; Arc L is convex toward the back of the wheel disc, with a radius of 133.82 mm and an arc angle of 10.29 degrees; Arc M is convex toward the back of the wheel disc, with a radius of 103.52 mm, and the arc angle is 15.55 degrees; the lower surface of the spoke is set so that the spoke has a thickness of 24.46 mm; the difference between (C) and A is that arc H, arc I, arc J, arc K, arc L, and arc M extend from the back of the flange to the rim in sequence, arc H is concave toward the back of the wheel disc, with a radius of 8.75 mm and an arc angle of 18.87 degrees; arc I is concave toward the back of the wheel disc, with a radius of 7.67 mm and an arc angle of 82.79 degrees; arc J is concave toward the front of the wheel disc, with a radius of 358.7 mm and an arc angle of 1.96 degrees; arc K is convex toward the back of the wheel disc, with a radius of 213.5 mm and an arc angle of 6.96 degrees; arc L is convex toward the back of the wheel disc, with a radius of 133.82 mm, and the arc angle is 8.06 degrees; the arc M is convex toward the back of the wheel disc, with a radius of 103.52 mm and an arc angle of 8.87 degrees; the lower surface of the spoke is configured so that the spoke has a thickness of 24.31 mm.

[0022] The advantages of the improved aluminum alloy wheel hub for motor vehicles of the present invention are: (1) more uniform stress distribution; (2) lower overall stress level of the wheel hub; (3) lower overall mass of the wheel hub; and (4) higher reliability of the wheel hub. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0024] Figure 1 : A three-dimensional schematic diagram of the wheel hub of embodiment 1 of the present invention.

[0025] Figure 2 : A schematic cross-sectional view of a half portion of a wheel hub according to embodiment 1 of the present invention.

[0026] Figure 3 : A schematic cross-sectional view of the wheel hub of Comparative Example 1 of the present invention.

[0027] In the figure: A-spoke cone surface, B-spoke connecting arc surface, C-flange outer end surface, 1-flange bolt hole, 2-flange, 3-spoke, 4-rim, 41-outer wheel lip, 42-outer wheel lip bead seat, 43-wheel well, 44-middle section of rim, 45-inner wheel lip bead seat, 46-inner wheel lip, D-arc D, E-arc E, F-arc F, G-arc G, H-arc H, I-arc I, J-arc J, K-arc K, L-arc L, M-arc M, N-arc N, P-arc P, Q-arc Q, R-arc R, S-arc S. DETAILED DESCRIPTION

[0028] Embodiment 1: In this embodiment, an improved aluminum alloy wheel hub for motor vehicles is disclosed, which includes a flange 2, a spoke 3 and a rim 4; the flange 2 is cylindrical and has flange bolt holes 1 evenly distributed thereon that penetrate the bottom surface of the cylinder; the inner end of the spoke 3 is connected to the flange 2, and the outer end is connected to the rim 4 through an outer wheel lip bead seat 42; the rim 4 includes an outer wheel lip 41, an outer wheel lip bead seat 42, a wheel well 43, a rim middle section 44, an inner wheel lip bead seat 45 and an inner wheel lip 46 that are connected in sequence from end to end along a direction perpendicular to the plane where the flange 2 is located; the outer wheel lip 41 extends along the outer wheel lip bead seat 42 toward a position away from the flange 2 direction, and includes an outer wheel rim at the end; the outer wheel lip bead seat 42 is connected to the outer wheel lip in the outer direction of the wheel disc, is connected to the wheel disc on the side, and is connected to the wheel well 43 in the inner direction of the wheel disc; the wheel well 43 is conical or cylindrical, and is connected to the rim middle section 44 in the outer direction of the wheel disc; the rim middle section 44 is conical or cylindrical, and is connected to the inner wheel lip bead seat 42 in the outer direction of the wheel disc; the inner wheel lip bead seat 42 is recessed relative to the inner wheel lip 46, and is connected to the inner wheel lip 46 in the outer direction of the wheel disc; the inner wheel lip 46 extends in a direction away from the central axis of the flange 2, and includes an inner wheel rim at the end.

[0029] The wheel spoke 3 of the improved aluminum alloy wheel hub for motor vehicles defines a plurality of circular windows, the wheel spoke is located between the flange and the outer wheel lip bead seat, the upper surface of the wheel spoke 3 includes a wheel spoke conical surface A, a wheel spoke connecting arc surface B and a flange outer end surface C, the flange outer end surface C is an annular plane, the flange 2 of the aluminum alloy wheel hub for motor vehicles is composed of a hollow cylinder with an outer diameter of 405.85 mm, an inner diameter of 248.2 and a thickness of 23 mm, and the flange 2 includes 10 holes with a diameter of 26 mm. mm flange bolt hole 1; in the cross section of the spoke cone surface A, spoke connection arc surface B and flange outer end surface C and the motor vehicle aluminum alloy wheel hub on the plane passing through the center axis of the flange 2, the projection of the spoke connection arc surface B is an arc with a diameter of 36.32mm and an arc angle of 57.8 degrees, and the two ends of the spoke connection arc surface B are tangent to the flange outer end surface C and the spoke cone surface A respectively; the semi-apex angle of the spoke cone surface A is 29 degrees, the diameter of the circle where the upper edge of the spoke cone surface intersects with the plane parallel to the flange plane is 465.35mm, and the diameter of the circle where the lower edge intersects with the plane parallel to the flange plane is 511.04mm; the lower surface of the spoke 3 is set so that the spoke has a thickness of 23.96mm. The line segment obtained by the intersection of the lower surface of the spoke with the plane of the center axis of the flange is connected by tangent arcs. The tangent arcs are composed of six arcs, among which arcs H, arc I, arc J, arc K, arc L and arc M extend from the back of the flange to the rim in sequence, arc H is concave toward the back of the wheel disk, with a radius of 8.75 mm and an arc angle of 18.87 degrees; arc I is concave toward the back of the wheel disk, with a radius of 7.67 mm and an arc angle of 82.79 degrees; arc J is concave toward the front of the wheel disk, with a radius of 358.7 mm and an arc angle of 1.67 degrees; arc K is convex toward the back of the wheel disk, with a radius of 213.5 mm and an arc angle of 3.78 degrees; arc L is convex toward the back of the wheel disk, with a radius of 133.82 mm and an arc angle of 9.55 degrees; arc M is convex toward the back of the wheel disk, with a radius of 103.52 mm and an arc angle of 14.35 degrees.

[0030] Embodiment 2: In this embodiment, the difference from Embodiment 1 is that arc H, arc I, arc J, arc K, arc L, and arc M extend from the back of the flange to the rim in sequence, arc H is recessed toward the back of the wheel disk, with a radius of 8.75 mm and an arc angle of 25.21 degrees; arc I is recessed toward the back of the wheel disk, with a radius of 7.67 mm and an arc angle of 90 degrees; arc J is recessed toward the front of the wheel disk, with a radius of 358.7 mm and an arc angle of 1.14 degrees; arc K is convex toward the back of the wheel disk, with a radius of 213.5 mm and an arc angle of 3.42 degrees; arc L is convex toward the back of the wheel disk, with a radius of 133.82 mm and an arc angle of 10.29 degrees; arc M is convex toward the back of the wheel disk, with a radius of 103.52 mm and an arc angle of 15.55 degrees. The lower surface of the spoke is configured so that the spoke has a thickness of 24.46 mm.

[0031] Embodiment 3: In this embodiment, the difference from Embodiment 1 is that arc H, arc I, arc J, arc K, arc L, and arc M extend from the back of the flange to the rim in sequence, arc H is concave toward the back of the wheel disk, with a radius of 8.75 mm and an arc angle of 18.87 degrees; arc I is concave toward the back of the wheel disk, with a radius of 7.67 mm and an arc angle of 82.79 degrees; arc J is concave toward the front of the wheel disk, with a radius of 358.7 mm and an arc angle of 1.96 degrees; arc K is convex toward the back of the wheel disk, with a radius of 213.5 mm and an arc angle of 6.96 degrees; arc L is convex toward the back of the wheel disk, with a radius of 133.82 mm and an arc angle of 8.06 degrees; arc M is convex toward the back of the wheel disk, with a radius of 103.52 mm and an arc angle of 8.87 degrees. The lower surface of the spoke is configured so that the spoke has a thickness of 24.31 mm.

[0032] Comparative Example 1: The difference between this comparative example and Example 1 is that the line segments obtained by the intersection of the lower surface of the spoke of the comparative hub and the plane of the center axis of the flange are connected by tangent arcs, and the tangent arcs are composed of five arcs, among which arc N, arc P, arc Q, arc R, and arc S extend from the back of the flange to the rim in sequence, arc N is concave toward the front of the wheel disc, with a radius of 8.20 mm and an arc angle of 26.36 degrees; arc P is concave toward the front of the wheel disc, with a radius of 11.04 mm and an arc angle of 49.89 degrees; arc Q is concave toward the front of the wheel disc, with a radius of 34.14 mm and an arc angle of 8.92 degrees; arc R is convex toward the back of the wheel disc, with a radius of 19.00 mm and an arc angle of 29.28 degrees; arc S is convex toward the back of the wheel disc, with a radius of 256.85 mm, and the arc angle is 11.20 degrees. The lower surface of the spoke is configured so that the spoke has a thickness of 24.68 mm. The comparative example wheel rim and flange structure are the same as those of Example 1.

[0033] Example 4: The weights of the wheels of Examples 1, 2 and 3 and Comparative Example 1 were measured, and the results are shown in Table 1.

[0034] Table 1: Weight measurement results of Examples 1, 2 and 3 and Comparative Example 1 (unit: Kg).

[0035]

[0036] As can be seen from Table 1, when the structures of other parts are the same, the weights of Examples 1, 2 and 3 are all reduced compared with Comparative Example 1, and the weight of Example 1 is reduced by 330 g compared with Comparative Example 1.

[0037] Example 5: Two performance tests and stress level measurements were performed on the wheels of Examples 1, 2 and 3 and Comparative Example 1. The above wheels were subjected to bending fatigue and radial fatigue tests in accordance with the national standard GB / T 5909-2009 at the test center of CITIC Dicastal Co., Ltd.

[0038] Unless otherwise specified, the radial fatigue testing machine used in this embodiment is also called a wheel radial fatigue testing machine, which is purchased from Jinan Yongce Industrial Equipment Co., Ltd.

[0039] Before the radial fatigue test process, the wheel hub is first fixed to the radial fatigue testing machine, and then the strain gauge is fixed on the front of the wheel hub window, and the strain gauge is connected to the data acquisition device through a wire. Then the loading and rotation of the fatigue test are carried out according to the method of the national standard GB / T 5909-2009. After the wheel rotates at least one circle, the strain gauge transmits the strain information (ε, dimensionless, usually expressed as a percentage) to the data acquisition device. Then, according to the stress-strain relationship: σ=E*ε, the strain is converted into stress (σ is stress, unit MPa; E is elastic modulus, 68980MPa). The test passability and stress level results are shown in Table 2.

[0040] In this embodiment, the strain gauge is an elastic strain gauge purchased from AVIC Electric Measurement Instrument Co., Ltd.

[0041] The test passability and stress level results are shown in Table 2.

[0042] Table 2: Wheel performance tests and stress level measurements of Examples 1, 2 and 3 and Comparative Example 1 (unit: MPa).

[0043]

[0044] Note: In the table, Y means passing the test, and N means failing the test.

[0045] As can be seen from Table 2, Examples 1, 2 and 3 can all pass two tests, while Comparative Example 1 can only pass the bending fatigue test. As can be seen from Table 2, the maximum stress level on the front side of the hub window of Examples 1, 2 and 3 is lower, while the stress level of Comparative Example 1 is higher. The stress of Example 1 is 19.2 MPa lower than that of Comparative Example 1. It can be seen that the hubs of Examples 1-3 achieve stress reduction and weight reduction of the hubs through the special setting of the spoke shape. However, this stress reduction cannot be observed in Comparative Example 1 which does not have a special spoke shape.

[0046] Example 6: The static rigidity of the wheels of Examples 1, 2 and 3 and Comparative Example 1 was measured. The static rigidity of the wheels was measured in the test center of CITIC Dicastal Co., Ltd. according to the SAEJ328 standard of the American Wheel Engineering Association. Static rigidity represents the ability of the wheel to resist deformation when subjected to static force. The higher the value, the stronger the ability to resist deformation and the higher the reliability of the wheel. The test results are shown in Table 3.

[0047] Table 3: Static rigidity measurement results of wheels of Examples 1, 2 and 3 and Comparative Example 1 (unit: kNm / rad).

[0048] Example 1 Example 2 Example 3 Comparative Example 1 Static rigidity 21597.6 21442.4 21401.3 17561.4

[0049] As can be seen from Table 3, Examples 1, 2 and 3 all have relatively high static rigidity values, while Comparative Example 1 has relatively low static rigidity values. This indicates that under the same external force, Examples 1, 2 and 3 have relatively high structural stability and high reliability. Comparative Example 1 has relatively low static rigidity values, poor structural stability and low reliability.

[0050] It can be seen from Example 6 that the wheels of Examples 1-3 achieve weight reduction and improved static rigidity, thereby achieving greater mechanical strength without increasing the material (or even reducing the material).

Claims

1. An improved aluminum alloy wheel hub for motor vehicles, wherein the wheel spokes of the improved aluminum alloy wheel hub for motor vehicles define a plurality of circular windows, the wheel spokes are located between the flange and the outer wheel lip bead seat, the upper surface of the wheel spokes comprises a wheel spoke conical surface A, a wheel spoke connecting arc surface B and a flange outer end surface C, the flange outer end surface C is an annular plane, and has a length of 175 to 235 mm from the center point of the flange to the upper edge of the wheel spoke connecting arc surface B, and has an inner diameter of 95 to 152 mm; the wheel spoke conical surface A, the wheel spoke connecting arc surface B and the flange outer end surface C are connected to the aluminum alloy wheel hub of the motor vehicle through In the cross section on the plane of the center axis of the flange, the projection of the spoke connection arc surface B is an arc with a diameter of 72.63 mm and an arc angle of 50 to 65 degrees, and the two ends of the spoke connection arc surface B are tangent to the flange outer end surface C and the spoke cone surface A respectively; the semi-apex angle of the spoke cone surface A is 25 to 35 degrees, the diameter of the circle where the upper edge of the spoke cone surface intersects with the plane parallel to the flange plane is 455 to 475 mm, and the diameter of the circle where the lower edge intersects with the plane parallel to the flange plane is 500 to 520 mm; the spoke has a thickness of 18.30 to 29.30 mm; The line segments obtained by the intersection of the lower surface of the spoke and the plane of the center axis of the flange are connected by tangent arcs; the tangent arcs are composed of six arcs, wherein arcs H, arcs I, arcs J, arcs K, arcs L, and arcs M extend from the back of the flange to the rim in sequence, and: arc H is concave toward the back of the wheel disc, with a radius of 8.2 to 9.5 mm and an arc angle of 16.5 to 30.5 degrees; arc I is concave toward the front of the wheel disc, with a radius of 6.0 to 8.0 mm and an arc angle of 7 The arc J is concave toward the front of the roulette wheel, with a radius of 340-380 mm and an arc angle of 0.5-2.5 degrees; the arc K is convex toward the back of the roulette wheel, with a radius of 200-220 mm and an arc angle of 2.5-7.5 degrees; the arc L is convex toward the back of the roulette wheel, with a radius of 125-140 mm and an arc angle of 8.0-11.5 degrees; the arc M is convex toward the back of the roulette wheel, with a radius of 95-110 mm and an arc angle of 8.5-18.5 degrees.

2. The improved aluminum alloy wheel hub for motor vehicles according to claim 1, characterized in that: The semi-apex angle of the spoke cone surface A is 29 degrees.

3. The improved aluminum alloy wheel hub for motor vehicles according to claim 1, characterized in that: The radius of the projected arc of the spoke connecting arc surface B is 36.32 mm, and the arc angle is 57.8 degrees.

4. The improved aluminum alloy wheel hub for motor vehicles according to claim 1, characterized in that: The minimum distance between the projection line segment of the flange outer end surface C and the chamfer of the flange bolt hole is 20.93 mm.

5. The improved aluminum alloy wheel hub for motor vehicles according to claim 1, characterized in that: The flange of the motor vehicle aluminum alloy wheel hub is composed of a hollow cylinder with an outer diameter of 380-450mm, an inner diameter of 200-270mm, and a thickness of 20-30mm, and the flange includes 8-12 flange bolt holes with a diameter of 20-30mm, and the flange bolt holes are evenly distributed on the circumference of the flange.

6. The improved aluminum alloy wheel hub for motor vehicles according to claim 5, characterized in that: The flange of the aluminum alloy wheel hub of the motor vehicle is composed of a hollow cylinder with an outer diameter of 405.85 mm, an inner diameter of 248.2 and a thickness of 23 mm, and the flange includes 8-12 flange bolt holes with a diameter of 20-30 mm.

7. The improved aluminum alloy wheel hub for motor vehicles according to claim 1, characterized in that: Arc H is concave toward the back of the roulette wheel, with a radius of 8.75mm and an arc angle of 18.5 to 20.5 degrees; Arc I is concave toward the front of the roulette wheel, with a radius of 7.67mm and an arc angle of 80.5 to 85.5 degrees; Arc J is concave toward the front of the roulette wheel, with a radius of 358.7mm and an arc angle of 1.4 to 1.8 degrees; Arc K is convex toward the back of the roulette wheel, with a radius of 213.5mm and an arc angle of 3.5 to 4.2 degrees; Arc L is convex toward the back of the roulette wheel, with a radius of 133.82mm and an arc angle of 9.0 to 10.0 degrees; Arc M is convex toward the back of the roulette wheel, with a radius of 103.52mm and an arc angle of 12.5 to 14.5 degrees.

8. The improved aluminum alloy wheel hub for motor vehicles according to claim 1, characterized in that: The improved aluminum alloy wheel hub for motor vehicles is selected from the following: (A) the wheel spokes (3) of the improved aluminum alloy wheel hub for motor vehicles define a plurality of circular windows, the wheel spokes are located between the flange and the outer wheel lip bead seat, the upper surface of the wheel spokes (3) includes a wheel spoke conical surface A, a wheel spoke connecting arc surface B and a flange outer end surface C, the flange outer end surface C is an annular plane, the flange (2) of the aluminum alloy wheel hub for motor vehicles is composed of a hollow cylinder with an outer diameter of 405.85 mm, an inner diameter of 248.2 and a thickness of 23 mm, and the flange (2) includes 10 flange bolt holes (1) with a diameter of 26 mm; the wheel spoke conical surface A, In the cross section of the spoke connection arc surface B and the flange outer end surface C and the motor vehicle aluminum alloy wheel hub on the plane passing through the center axis of the flange plate (2), the projection of the spoke connection arc surface B is an arc with a diameter of 36.32 mm and an arc angle of 57.8 degrees, and the two ends of the spoke connection arc surface B are tangent to the flange outer end surface C and the spoke cone surface A respectively; the semi-apex angle of the spoke cone surface A is 29 degrees, the diameter of the circle where the upper edge of the spoke cone surface intersects with a plane parallel to the flange plate plane is 465.35 mm, and the diameter of the circle where the lower edge intersects with a plane parallel to the flange plate plane is 511.04 mm; the lower surface of the spoke (3) is configured so that the spoke has a thickness of 23.96 mm; The line segments obtained by the intersection of the lower surface of the spoke and the plane of the center axis of the flange are connected by tangent arcs; the tangent arcs are composed of six arcs, among which arcs H, arc I, arc J, arc K, arc L, and arc M extend from the back of the flange to the rim in sequence, arc H is concave toward the back of the wheel disc, with a radius of 8.75mm and an arc angle of 18.87 degrees; arc I is concave toward the back of the wheel disc, with a radius of 7.67mm and an arc angle of 82.79 degrees; arc J is concave toward the front of the wheel disc, with a radius of 358.7mm and an arc angle of 1.67 degrees; arc K is convex toward the back of the wheel disc, with a radius of 213.5mm m, with an arc angle of 3.78 degrees; arc L is convex toward the back of the roulette disk, with a radius of 133.82mm and an arc angle of 9.55 degrees; arc M is convex toward the back of the roulette disk, with a radius of 103.52mm and an arc angle of 14.35 degrees; the difference between (B) and A is that arc H, arc I, arc J, arc K, arc L, and arc M extend from the back of the flange to the rim in sequence, arc H is concave toward the back of the roulette disk, with a radius of 8.75mm and an arc angle of 25.21 degrees; arc I is concave toward the back of the roulette disk, with a radius of 7.67mm and an arc angle of 90 degrees; arc J is concave toward the front of the roulette disk, with a radius of 358.7m m, the arc angle is 1.14 degrees; arc K is convex toward the back of the wheel disc, with a radius of 213.5mm and an arc angle of 3.42 degrees; arc L is convex toward the back of the wheel disc, with a radius of 133.82mm and an arc angle of 10.29 degrees; arc M is convex toward the back of the wheel disc, with a radius of 103.52mm and an arc angle of 15.55 degrees; the lower surface of the spoke is set so that the spoke has a thickness of 24.46mm; the difference between (C) and A is that arc H, arc I, arc J, arc K, arc L, arc M extend from the back of the flange to the rim in sequence, arc H is concave toward the back of the wheel disc, with a radius of 8.75m m, with an arc angle of 18.87 degrees; arc I is concave toward the back of the wheel disc, with a radius of 7.67mm and an arc angle of 82.79 degrees; arc J is concave toward the front of the wheel disc, with a radius of 358.7mm and an arc angle of 1.96 degrees; arc K is convex toward the back of the wheel disc, with a radius of 213.5mm and an arc angle of 6.96 degrees; arc L is convex toward the back of the wheel disc, with a radius of 133.82mm and an arc angle of 8.06 degrees; arc M is convex toward the back of the wheel disc, with a radius of 103.52mm and an arc angle of 8.87 degrees; the lower surface of the spoke is configured so that the spoke has a thickness of 24.31mm.

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