An aluminum alloy wheel hub inner rim structure capable of improving a rim mode

Abstract

The utility model belongs to the technical field of automobile parts, concretely relates to an aluminium alloy wheel hub inner rim structure capable of improving the rim mode, which comprises inner rim upper flange, inner rim groove web, inner rim lower flange, inner rim lower flange protrusion, rim transition fillet and inner rim plane connected in sequence. The inner rim upper flange guarantees the structural strength of the inner rim; the inner rim groove web reduces the thickness of the inner rim and lightens the weight; the inner rim lower flange improves the bending resistance and impact resistance of the inner rim and simultaneously improves the rim mode; the inner rim lower flange protrusion structure improves the rim mode; the rim transition fillet connects the inner rim lower flange protrusion and the rim. The utility model guarantees the structural strength of the inner rim, reduces the weight of the rim and improves the rim mode. The utility model guarantees the structural strength of the inner rim, reduces the weight of the rim and improves the rim mode.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, specifically relating to an inner rim structure of an aluminum alloy wheel hub that can improve the rim mode. Background Technology

[0002] With the rapid development of new energy vehicles, the performance requirements for key components are increasing. To meet the demands of high load and low energy consumption, aluminum alloy wheels are evolving towards larger size and lighter weight. However, this can easily lead to a reduction in structural stiffness, posing a severe challenge to the modal characteristics of the wheel rim.

[0003] Meanwhile, new energy vehicles lack the noise masking of traditional engines, making road noise and motor whine more prominent, causing drivers and passengers to be exceptionally sensitive to the vehicle's NVH performance. If the wheel rim mode resonates with the road surface or electric drive excitation, it will cause severe vibration and noise, seriously damaging comfort and endangering structural safety.

[0004] Therefore, proactively improving the rim modal frequency through structural optimization and material innovation, and avoiding common excitation frequency bands, has become a key technological path to enhance the quality, safety, and market competitiveness of new energy vehicles. Utility Model Content

[0005] This invention proposes an inner rim structure for aluminum alloy wheel hubs that can improve rim modal frequency, thereby solving the problem that rim modal frequency can cause severe vibration and noise in the prior art.

[0006] To achieve the above objectives, the present invention proposes the following technical solution:

[0007] An aluminum alloy wheel hub inner flange structure that can improve the rim mode includes an inner flange upper flange, an inner flange groove web, an inner flange lower flange, an inner flange lower flange protrusion, a rim transition fillet, and an inner flange plane connected in sequence.

[0008] The height of the upper flange of the inner rim is 5.5mm to 6.5mm; the depth of the groove web of the inner rim is 2mm to 3mm; the protruding structure of the lower flange of the inner rim extends beyond the plane of the inner rim, and the height of the extension ranges from 0.8mm to 1mm.

[0009] Preferably, the upper flange of the inner wheel rim is flush with the lower flange of the inner wheel rim.

[0010] Preferably, the radius of the fillet of the lower flange of the inner wheel rim is 3mm, and the radius of the fillet of the raised structure of the lower flange of the inner wheel rim is 3mm.

[0011] The advantages of this utility model are:

[0012] This invention proposes an inner rim structure for an aluminum alloy wheel hub that improves rim modality. The upper flange of the inner rim ensures its structural strength; the grooved web of the inner rim reduces its thickness and weight; the lower flange improves its bending and impact resistance, while also enhancing rim modality; the raised structure of the lower flange further improves rim modality; and the rim transition fillet connects the raised lower flange to the rim. This design ensures the structural strength of the inner rim while reducing its weight and improving rim modality. Attached Figure Description

[0013] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0014] Figure 1 A schematic diagram of an inner rim structure of an aluminum alloy wheel hub that can improve the rim mode;

[0015] Figure 2 This is a schematic diagram of the inner rim structure of an aluminum alloy wheel hub that can improve the rim mode. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0017] The following detailed description is exemplary and intended to provide further detailed explanation of the present invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this invention. Example

[0018] Please see Figure 1 As shown, this utility model provides an aluminum alloy wheel hub inner flange structure that can improve the rim mode, including an inner flange upper flange 1, an inner flange groove web 2, an inner flange lower flange 3, an inner flange lower flange protrusion 4, a rim transition fillet 5, and an inner flange plane 6 connected in sequence.

[0019] The inner rim upper flange 1 ensures the structural strength of the inner rim; the inner rim groove web 2 reduces the thickness of the inner rim and lightens its weight; the inner rim lower flange 3 improves the inner rim's bending and impact resistance, while also improving the rim mode; the inner rim lower flange protrusion 4 improves the rim mode; and the rim transition fillet 5 connects the inner rim lower flange protrusion to the rim.

[0020] The upper flange 1 of the inner wheel rim is flush with the lower flange 3 of the inner wheel rim.

[0021] like Figure 2 As shown, the smaller the height H1 of the upper flange 1 of the inner rim, the greater the improvement in rim modality, but the inner rim strength and bending resistance will decrease. Considering all factors, the value of H1 is in the range of 5.5mm to 6.5mm. The larger the depth H2 of the inner rim groove web, the greater the improvement in rim modality, but the inner rim strength and torsional resistance will decrease. Considering all factors, the value of H2 is in the range of 2mm to 3mm. The protrusion 4 of the lower flange of the inner rim extends beyond the inner rim plane H3. Theoretically, the larger H3 is, the better the rim frequency is increased. Considering weight and improvement effect, the value of H3 is in the range of 0.8mm to 1mm.

[0022] The inner wheel rim lower flange fillet radius is 3mm, and the inner wheel rim lower flange protrusion 4 fillet radius is 3mm.

[0023] This utility model proposes an inner rim structure for an aluminum alloy wheel hub that can improve the rim modality, similar to an I-beam structure. It includes an upper inner rim flange 1, a grooved web 2, a lower inner rim flange 3, a lower inner rim flange protrusion 4, and a rim transition fillet 5. Specifically:

[0024] The inner rim upper flange 1 ensures the structural strength of the inner rim; the inner rim groove web 2 reduces the thickness of the inner rim and lightens its weight; the inner rim lower flange 3 improves the inner rim's bending and impact resistance, while also improving the rim mode; the inner rim lower flange protrusion 4 improves the rim mode; and the rim transition fillet connects the inner rim lower flange protrusion 4 to the rim.

[0025] This invention reduces the weight of the rim flange, improves the rim modality, and still maintains excellent mechanical properties. Example

[0026] The wheel using this invention and the ordinary inner flange wheel in Example 1 were subjected to wheel strength and fatigue tests, including 13-degree impact strength, radial impact, radial fatigue, and bending fatigue.

[0027] Table 1 compares the test results of ordinary inner flange wheels and wheels using this utility model, using the maximum stress as the comparison.

[0028] Table 1

[0029] Criterion Ordinary inner flange wheel The wheel adopting this utility model Weight (kg) \ 11.46 11.42 13 degrees of impact Max Strain ≤6.0% 5.2% 5.3% Radial impact Von Mises Stress ≤ 100MPa 91MPa 92.3MPa Radial fatigue Von Mises Stress ≤ 160 MPa 154.6 MPa 154.6 MPa Bending fatigue Von Mises Stress ≤ 105 MPa 98.4MPa 98.6MPa First-order mode of wheel rim Hz \ 272Hz 280Hz

[0030] Tests show that the wheel hub meets the American wheel standards SAE J175 and SAE J328-2005, namely the requirements for 13-degree impact strength, radial fatigue, and bending fatigue performance. It also meets the national standards GB / T 5334-2005 and GB / T15704-1995 for wheel strength and fatigue performance. In addition, it passed both dual-axle tests and road tests.

[0031] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. An inner rim structure of an aluminum alloy wheel hub capable of improving rim modes, characterized in that, It includes the inner rim upper flange, the inner rim groove web, the inner rim lower flange, the inner rim lower flange protrusion, the rim transition fillet, and the inner rim plane, which are connected in sequence. The height of the upper flange of the inner rim is 5.5mm to 6.5mm; the depth of the groove web of the inner rim is 2mm to 3mm; the protruding structure of the lower flange of the inner rim extends beyond the plane of the inner rim, and the height of the extension ranges from 0.8mm to 1mm.

2. The aluminum alloy wheel hub inner rim structure for improving rim mode as described in claim 1, characterized in that, The upper flange of the inner rim is flush with the lower flange of the inner rim.

3. The aluminum alloy wheel hub inner rim structure for improving rim mode as described in claim 1, characterized in that, The radius of the fillet of the lower flange of the inner wheel rim is 3mm, and the radius of the fillet of the raised structure of the lower flange of the inner wheel rim is 3mm.

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