Side supporting structure for inner rim of aluminum alloy hub

Abstract

An inner rim side supporting structure of an aluminum alloy hub relates to the field of manufacturing of aluminum alloy hubs, comprises an aluminum alloy hub main body, and is characterized in that a supporting lantern ring is fixedly clamped on the inner side wall of the inner rim side of the aluminum alloy hub main body, the supporting lantern ring is in a taper sleeve shape, a clamping groove is formed in the inner side wall of the aluminum alloy hub main body, and the supporting lantern ring is connected with the aluminum alloy hub main body. A non-return protrusion matched with the clamping groove is arranged on the outer side of the supporting lantern ring. And the supporting lantern ring is provided with an assembly buffer notch. The wheel has the advantages that the impact resistance and fatigue resistance of the inner rim are high, the inner rim is not prone to cracking, and safety is high.

Description

Technical Field

[0001] The utility model relates to the field of aluminum alloy wheel hub manufacturing, and more specifically, to a side support structure for the inner rim of an aluminum alloy wheel hub that improves the impact resistance and fatigue resistance at the inner rim, is not prone to cracking at the inner rim, and has high safety. Background Art

[0002] As we know, in the current aluminum alloy wheel casting technology, whether it is low-pressure casting or gravity casting, the wheels show that the outer rim is supported by spokes, while the inner rim is a completely suspended structure without any support. Since the entire rim and the inner rim are suspended, during vehicle driving, the inner rim is frequently impacted and deformed, restored and then deformed again. This cycle repeats continuously, gradually reaching the yield limit of the aluminum alloy material, resulting in plastic deformation at this part, and then forming fine cracks that are difficult to identify with the naked eye. Research shows that once the fine cracks are generated, they will extend in all directions and in the depth direction at a geometric rate. Therefore, once the yield limit of the aluminum alloy material is reached, microcracks will first occur, and if used continuously, fatigue cracks visible to the naked eye will appear at the inner rim of the wheel. At this moment, if the vehicle encounters a large impact, it may even lead to a tragedy of vehicle destruction and death, leaving a great safety hazard for vehicle driving. According to consumer feedback, whether it is a domestic brand, a joint venture brand, or a luxury brand, the cracking of the inner rim of aluminum alloy wheels is an objective fact. Currently, most manufacturers adopt the measure of increasing the thickness of the inner rim and the inner side of the rim. Its disadvantages are twofold: one is that the strengthening effect is not very ideal, and there are still market feedbacks and complaints about rim deformation or cracking from time to time; the other is that to ensure the sequential solidification conditions of the casting during casting, it must conform to the wall thickness gradient principle. Now, since the inner rim and the rim part farthest from the gate are thickened, it is also necessary to increase the casting blank allowance of other parts of the casting more, resulting in a large increase in the machining allowance of the subsequent processing procedures, consuming more manpower, material resources and energy. At the same time, it will also greatly increase the aluminum consumption, and the percentage of the net weight of the wheel finished product to the casting blank will be greatly reduced, increasing the enterprise cost. The applicant applied for an invention patent with the name: A Side Support Structure for the Inner Rim of an Aluminum Alloy Wheel Hub, and the patent number: 2019103625996 on April 30, 2019. Although this patent solves the above technical problems, it has the defects of complex structure, troublesome installation and operation, and high cost. After long-term use, due to the aging of the elastic liquid glue layer after solidification and the gradually decreasing adhesion force with the support collar or the inner side of the aluminum alloy wheel hub, the support collar is prone to separation from the aluminum alloy wheel hub under a large impact force. Content of the Utility Model

[0003] The purpose of the utility model is to solve the deficiencies of the above-mentioned existing technologies, and provide a side support structure for the inner rim of an aluminum alloy wheel hub that improves the impact resistance and fatigue resistance at the inner rim, is not prone to cracking at the inner rim, has high safety, and the support collar is not prone to separation from the aluminum alloy wheel hub after long-term use.

[0004] The technical solution adopted by the present utility model to solve the deficiencies of the above-mentioned prior art is as follows:

[0005] An inner rim side support structure for an aluminum alloy wheel hub, comprising an aluminum alloy wheel hub body, characterized in that a support collar is fixedly clamped on the inner side wall of the inner rim side of the aluminum alloy wheel hub body. The support collar is in the shape of a tapered sleeve. A clamping groove is provided on the inner side wall of the aluminum alloy wheel hub body. An anti-reverse protrusion cooperating with the clamping groove is provided on the outer side of the support collar; an assembly buffer notch is provided on the support collar.

[0006] In a further improvement of the present utility model, a buffer guiding chute is provided on the support collar on one side of the assembly buffer notch, and a guiding insertion plate cooperating with the buffer guiding chute is provided on the support collar on the other side of the assembly buffer notch.

[0007] In a further improvement of the present utility model, reinforcing blocks are provided on the inner sides of the support collar on both sides of the assembly buffer notch. It can improve the strength of the support collar at the assembly buffer notch and reduce the deformation damage caused by repeated impacts.

[0008] Preferably, the axial dimension of the support collar is greater than the dimension of the bead seat of the aluminum alloy wheel hub body.

[0009] Preferably, the clamping groove is provided on the inner side of the aluminum alloy wheel hub body opposite to the peak of the bead seat. This can avoid having a greater impact on the strength of a local part of the aluminum alloy wheel hub body.

[0010] Preferably, the clamping groove is an annular groove, and the anti-reverse protrusion is an annular protrusion.

[0011] In the present utility model, the elasticity and toughness of the material for preparing the support collar are higher than those of the material for preparing the aluminum alloy wheel hub body.

[0012] In the present utility model, the material of the support collar is one of the metal materials 65Mn, copper-zinc alloy, and titanium-nickel alloy.

[0013] During production and assembly, when the support collar is squeezed inward, the outer diameter of the support collar can be reduced. The support collar is pressed into the inner side of the aluminum alloy wheel hub body from the inner rim side of the aluminum alloy wheel hub. The anti-reverse protrusion enters the clamping groove, and the support collar is axially fixed on the inner side of the aluminum alloy wheel hub body. The support collar provides support for the suspended (without spoke support) part on the inner side of the aluminum alloy wheel hub body, reducing the risk of rim impact deformation, impact cracks and fatigue cracks; at the same time, to maintain the excellent comfort performance of the aluminum alloy automobile wheel and the energy absorption of the support collar itself. The utility model can greatly improve the impact resistance, fatigue resistance and energy absorption of the inner rim of the aluminum alloy wheel hub and the rim part near the inner rim, thereby improving the performance of the entire aluminum alloy wheel and greatly reducing the risk of wheel hub deformation and cracking; at the same time, because the strength of the inner rim part is greatly improved, the thickness of this part can be appropriately reduced, making its casting state more in line with the wall thickness gradient principle, greatly reducing the weight of the product blank and improving the process yield of the aluminum alloy wheel. When not subjected to external extrusion or impact, the end of the guiding plug is located at the notch of the buffer guiding chute, preventing the support collars on both sides of the assembly buffer notch from being misaligned and stacked when subjected to external extrusion or impact, avoiding large deformation and improving the support performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is Figure 1 a partial enlarged view of part A of

[0016] Figure 3 is a three-dimensional structural diagram of the support collar in the present utility model.

[0017] Figure 4 is Figure 3 a partial enlarged view of part B of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] As Figures 1-4 shown in the aluminum alloy wheel hub inner rim side support structure, including an aluminum alloy wheel hub body, a support collar 5 is fixedly clamped on the inner side wall of the inner rim 1 side of the aluminum alloy wheel hub body. The support collar 5 is in the shape of a tapered sleeve. A clamping groove is provided on the inner side wall of the aluminum alloy wheel hub body. An anti-reverse protrusion 4 cooperating with the clamping groove is provided on the outer side of the support collar 5; an assembly buffer notch 7 is provided on the support collar 5. The assembly buffer notch 7 truncates the support collar (circumferentially). From Figure 4As can be seen, a buffer guiding chute 8 is provided on the supporting collar 5 on the left side of the assembly buffer notch 7, and a guiding inserting plate 6 cooperating with the buffer guiding chute 8 is provided on the supporting collar 5 on the right side of the assembly buffer notch 7; the guiding inserting plate 6 can slide freely in the buffer guiding chute 8. The clamping groove is arranged on the inner side of the aluminum alloy wheel hub body opposite to the convex peak 3 of the bead seat 2, so as to avoid having a great influence on the strength of a local part of the aluminum alloy wheel hub body. The clamping groove is an annular groove, and the anti-reverse protrusion 4 is an annular protrusion. The axial dimension of the supporting collar 5 is larger than the axial dimension of the bead seat 2 of the aluminum alloy wheel hub body, and the supporting effect is better.

[0019] In the present utility model, the elasticity and toughness of the material for preparing the supporting collar are higher than those of the material for preparing the aluminum alloy wheel hub body. The material of the supporting collar is preferably one of the metal materials 65Mn, copper-zinc alloy, and titanium-nickel alloy.

[0020] In a further improvement of the present utility model, reinforcing blocks are provided on the inner sides of the supporting collars on both sides of the assembly buffer notch. The strength of the supporting collars at the assembly buffer notch can be improved, and the deformation damage caused by repeated impacts can be reduced.

[0021] During production and assembly, by squeezing the supporting collar inward, the outer diameter of the supporting collar can be made smaller, and the supporting collar can be pressed into the inner side of the aluminum alloy wheel hub body from the inner rim side of the aluminum alloy wheel hub. The anti-reverse protrusion enters the clamping groove, and the supporting collar is axially fixed on the inner side of the aluminum alloy wheel hub body. The supporting collar provides support for the suspended (without spoke support) part on the inner side of the aluminum alloy wheel hub body, reducing the risk of rim impact deformation, impact cracks, and fatigue cracks; at the same time, to maintain the excellent comfort performance of the aluminum alloy automobile wheel and the energy absorption property of the supporting collar itself. The present utility model can greatly improve the impact resistance, fatigue resistance, and energy absorption property of the inner rim of the aluminum alloy wheel hub and the rim part near the inner rim, thereby improving the performance of the entire aluminum alloy wheel, and greatly reducing the risk of wheel hub deformation and cracking; at the same time, because the strength of the inner rim part is greatly improved, the thickness of this part can be appropriately thinned, making its casting state more in line with the wall thickness gradient principle, greatly reducing the weight of the product blank, and improving the process yield of the aluminum alloy wheel. When not subjected to external extrusion or impact, the end of the guiding inserting plate is located at the notch of the buffer guiding chute, preventing the supporting collars on both sides of the assembly buffer notch from being misaligned and stacked when subjected to external extrusion or impact, avoiding large deformation, and improving the supporting performance.

Claims

1. An inner rim side support structure for an aluminum alloy wheel hub, comprising an aluminum alloy wheel hub body, characterized in that, A support sleeve ring is fixedly clamped on the inner side wall of the inner rim side of the aluminum alloy wheel hub body. The support sleeve ring is in the shape of a tapered sleeve. A clamping groove is provided on the inner side wall of the aluminum alloy wheel hub body. An anti-reverse protrusion that cooperates with the clamping groove is provided on the outer side of the support sleeve ring; an assembly buffer notch is provided on the support sleeve ring.

2. The inner rim side support structure of the aluminum alloy wheel hub according to claim 1, characterized in that A buffer guiding sliding groove is provided on the support sleeve ring on one side of the assembly buffer notch, and a guiding insertion plate that cooperates with the buffer guiding sliding groove is provided on the support sleeve ring on the other side of the assembly buffer notch.

3. The aluminum alloy wheel inner rim side support structure according to claim 1, wherein Reinforcing blocks are provided on the inner sides of the support sleeve ring on both sides of the assembly buffer notch.

4. The inner rim side support structure of the aluminum alloy wheel hub according to claim 1, characterized in that, The axial dimension of the support sleeve ring is larger than the dimension of the bead seat of the aluminum alloy wheel hub body.

5. The inner rim side support structure of the aluminum alloy wheel hub according to claim 1, wherein The clamping groove is provided on the inner side of the aluminum alloy wheel hub body opposite to the convex peak of the bead seat.

6. The inner rim side support structure of the aluminum alloy wheel hub according to claim 1, characterized in that The clamping groove is an annular groove, and the anti-reverse protrusion is an annular protrusion.

7. The inner rim side support structure of the aluminum alloy wheel hub according to claim 1, characterized in that, The elasticity and toughness of the material for preparing the support sleeve ring are higher than those of the material for preparing the aluminum alloy wheel hub body.

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