High-corrosion-resistance automobile hub unit

Abstract

The utility model relates to the technical field of automobile hubs, in particular to a high-corrosion-resistance automobile hub unit which comprises an outer ring, an inner ring is installed in the outer ring in a pressed mode, a flange plate is fixedly installed at the end, away from the inner ring, of the outer ring, a plurality of steel balls are movably installed in the outer ring, and a retainer is fixedly installed on the outer sides of the steel balls. An upper sealing piece is installed in the inner gap of the end, close to the inner ring, of the outer ring, a lower sealing piece is installed in the inner gap of the end, close to the flange plate, of the outer ring, and a magnetic reverse gland is fixedly installed on one side of the upper sealing piece. The special lubricating grease is coated between the magnetic back pressure cover and the upper sealing piece, so that the sealing effect of the hub is improved, the coating protection effect on the hub is achieved, meanwhile, the friction resistance between the magnetic back pressure cover and the upper sealing piece is reduced, the corrosion resistance of the hub is improved, and the service life of the hub is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile hubs, in particular to a high-corrosion-resistant automobile hub unit. Background Art

[0002] Wheels are primarily categorized by material, including steel and alloy. Steel wheels offer lower production costs and simpler manufacturing processes, but they are heavier, have greater inertia, and are less fuel-efficient. They also lack the heat dissipation efficiency of alloy wheels. Alloy wheels offer advantages such as lightweight, attractive appearance, improved heat dissipation, reduced inertia, and high manufacturing precision. However, they are relatively expensive and require more complex manufacturing processes.

[0003] The wheel hub, commonly known as the "rim" or "steel rim," is the center of the wheel where the axle is mounted. It easily accumulates dirt and, if left uncleaned for extended periods, can corrode and deform, posing a safety hazard. Therefore, special care must be taken to maintain the hub. Furthermore, the hub's design should also enhance its corrosion resistance.

[0004] For example, the automobile wheel hub disclosed in authorization announcement number CN202264602U has a low scrap rate. To achieve this purpose, the automobile wheel hub has a runout detection surface, characterized in that the runout detection surface is penetrated by multiple threaded holes for connecting tire bolts. However, this utility model lacks protective measures for the wheel hub, which is not conducive to ensuring the corrosion resistance of the wheel hub during long-term use and reduces the service life of the wheel hub. To this end, we propose a highly corrosion-resistant automobile wheel hub unit. Utility Model Content

[0005] The purpose of the present utility model is to provide a highly corrosion-resistant automobile wheel hub unit to solve the problem of poor corrosion resistance of the wheel hub during long-term use proposed in the above background art.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A highly corrosion-resistant automobile wheel hub unit comprises an outer ring, an inner ring being press-fitted into the interior of the outer ring, a flange being fixedly mounted on one end of the outer ring away from the inner ring, a plurality of steel balls being movably mounted in the interior of the outer ring, a retaining frame being fixedly mounted on the outside of the steel balls, an upper seal being mounted in the internal gap of the outer ring near one end of the inner ring, a lower seal being mounted in the internal gap of the outer ring near one end of the flange, a magnetic counter-pressure cover being fixedly mounted on one side of the upper seal, and special grease being coated between the magnetic counter-pressure cover and the upper seal.

[0008] Preferably, the upper sealing member and the lower sealing member are both made of nitrile rubber, and the amount of grease used is 0.6-1.0g.

[0009] Preferably, a flange is provided on one side of the flange close to the outer ring, the outer side of the flange is sleeved with the outer ring, and the inner ring and one end of the flange are engaged with each other.

[0010] Preferably, the steel balls are evenly distributed on the inner side of the outer ring in an array with the outer ring axis as the base point.

[0011] Preferably, the flange is provided with four mounting holes, and the four mounting holes are evenly distributed in an array with the center of the flange as a base point.

[0012] Preferably, a connecting flange is fixedly provided on the outside of the outer ring, a spline is provided at the center of the flange, and the number of spline teeth is 36.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This highly corrosion-resistant automotive wheel hub unit has a special grease applied between the magnetic counter-pressure cover and the upper seal. This not only improves the sealing effect of the wheel hub and provides a protective coating for the wheel hub, but also reduces the frictional resistance between the magnetic counter-pressure cover and the upper seal, thereby improving the corrosion resistance of the wheel hub and extending its service life.

[0015] 2. This highly corrosion-resistant automotive wheel hub unit utilizes upper and lower seals installed in the gap between the outer and inner rings, combined with a magnetic counter-pressure cover for multiple sealing functions, ensuring effective sealing of the hub. By fitting the outer ring over the flange and then engaging the inner ring with one end of the flange, the hub achieves a compact, integrated structure, improving overall stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 2 It is a front view structural schematic diagram of the present utility model.

[0018] In the figure: 1. Outer ring; 2. Inner ring; 3. Flange; 4. Steel ball; 5. Cage; 6. Magnetic counter-pressure cover; 7. Upper seal; 8. Lower seal. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 2 As shown, the utility model provides a technical solution:

[0021] A highly corrosion-resistant automobile wheel hub unit comprises an outer ring 1, an inner ring 2 being press-fitted into the inner portion of the outer ring 1, a flange 3 being fixedly mounted on one end of the outer ring 1 away from the inner ring 2, a plurality of steel balls 4 being movably mounted into the inner portion of the outer ring 1, a retaining frame 5 being fixedly mounted on the outer side of the steel balls 4, an upper seal 7 being mounted in the internal gap of the outer ring 1 near the end of the inner ring 2, a lower seal 8 being mounted in the internal gap of the outer ring 1 near the end of the flange 3, a magnetic counter-pressure cover 6 being fixedly mounted on one side of the upper seal 7, and special grease being coated between the magnetic counter-pressure cover 6 and the upper seal 7.

[0022] In this embodiment, preferably, the upper seal 7 and the lower seal 8 are both made of nitrile rubber, the amount of grease used is 0.6-1.0g, a flange is provided on the side of the flange 3 close to the outer ring 1, the outer ring 1 is sleeved on the outside of the flange, the inner ring 2 and one end of the flange are engaged with each other, the steel balls 4 are evenly distributed on the inner side of the outer ring 1 in an array with the axis of the outer ring 1 as the base point, the flange 3 is provided with four mounting holes, and the four mounting holes are evenly distributed in an array with the center of the flange 3 as the base point, a connecting flange is fixedly provided on the outside of the outer ring 1, a spline is provided in the center of the flange 3, and the number of spline teeth is 36.

[0023] In use, the highly corrosion-resistant automotive wheel hub unit of this embodiment is constructed by placing the outer ring 1 over the outer edge of the flange 3, then engaging the inner ring 2 with one end of the flange 3, positioning the steel balls 4 and retainer 5 between the flange and the outer ring 1. Finally, the magnetic counter-pressure cover 6 is fixed to one side of the upper seal 7. Before installation, 0.6-1.0g of specialized grease is applied between the magnetic counter-pressure cover 6 and the upper seal 7. This not only improves the sealing effectiveness of the wheel hub and provides a protective coating for the wheel hub, but also reduces friction between the magnetic counter-pressure cover 6 and the upper seal 7. When the vehicle wheel rotates, the arrangement of the balls and retainer 5 causes the inner ring 2, outer ring 1, and rolling elements of the wheel hub bearing to rotate together. The rolling elements utilize their circular surfaces to reduce friction, enabling the wheel to rotate more freely and stably. The upper and lower seals 7 and 8 installed in the gap between the outer and inner rings 1 and 2, combined with the multiple sealing functions of the magnetic counter-pressure cover 6, ensure the wheel hub's sealing effectiveness. In summary, the wheel hub combines protective measures on the basis of effective sealing, thereby effectively improving the corrosion resistance and operating stability of the wheel hub, thereby extending the service life of the wheel hub.

[0024] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly corrosion-resistant automobile wheel hub unit, comprising an outer ring (1), characterized in that: The inner ring (2) is pressed into the inner part of the outer ring (1), a flange (3) is fixedly installed at one end of the outer ring (1) away from the inner ring (2), a plurality of steel balls (4) are movably installed inside the outer ring (1), a retaining frame (5) is fixedly installed outside the steel balls (4), an upper seal (7) is installed in the internal gap of the outer ring (1) close to one end of the inner ring (2), a lower seal (8) is installed in the internal gap of the outer ring (1) close to one end of the flange (3), a magnetic counter-pressure cover (6) is fixedly installed on one side of the upper seal (7), and special grease is applied between the magnetic counter-pressure cover (6) and the upper seal (7).

2. The highly corrosion-resistant automobile wheel hub unit according to claim 1, characterized in that: The upper sealing member (7) and the lower sealing member (8) are both made of nitrile rubber, and the amount of the lubricating grease used is 0.6-1.0g.

3. The highly corrosion-resistant automobile wheel hub unit according to claim 1, characterized in that: The flange (3) is provided with a flange on one side close to the outer ring (1), the outer side of the flange is sleeved with the outer ring (1), and the inner ring (2) is engaged with one end of the flange.

4. The highly corrosion-resistant automobile wheel hub unit according to claim 1, characterized in that: The steel balls (4) are evenly distributed on the inner side of the outer ring (1) in an array with the axis of the outer ring (1) as a base point.

5. The highly corrosion-resistant automobile wheel hub unit according to claim 1, characterized in that: The flange (3) is provided with four mounting holes, and the four mounting holes are evenly distributed in an array with the center of the flange (3) as a base point.

6. The highly corrosion-resistant automobile wheel hub unit according to claim 1, characterized in that: A connecting flange is fixedly provided on the outside of the outer ring (1), and a spline is provided at the center of the flange (3), with the number of spline teeth being 36.

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