Wheel hub for preventing tire fall-off

Abstract

The utility model relates to a hub of preventing tire from falling off belongs to the technical field of automobile parts, the hub has the rim, spoke and the convex peak of forming the bead seat with the rim cooperation, at least one convex peak has the step structure far from the side of bead seat, and the roughness of this side bevel is 3.2, the bead seat has the sawtooth groove, the radial height of convex peak is higher than the radial height of conventional convex peak 1.2 1.5mm, the hub of preventing tire from falling off of the utility model has the characteristics of improving tire installation simple degree and safety, through setting up the step of guiding tire step -by -step installation under the hub convex peak, the tire is more easily inflated with 3.2 roughness processing, the sawtooth groove on the bead seat provides reliable mechanical interlocking structure, reduces the probability of tire removal, greatly reduces the installation difficulty and security risk, fundamentally solves the problem of the prior art that the tire is difficult to inflate and the risk of tire explosion is big because of the convex peak being too high, realizes the organic unity of tire convenient installation and driving safety.

Description

Technical Field

[0001] This utility model relates to a wheel hub, specifically a wheel hub that prevents tires from falling off, and belongs to the field of automotive parts technology. Background Technology

[0002] With the rapid development and increasing popularity of the automotive industry, higher requirements have been placed on vehicle safety performance. As a crucial load-bearing component connecting the tires and the vehicle, the wheel hub's structural design directly affects the overall driving safety and reliability of the vehicle.

[0003] Current technologies typically use the rim to secure the tire. While simple, this method is insufficient to guarantee a secure tire installation under conditions requiring lower tire pressure, such as in deserts or rock climbing. To reduce the probability of tire detachment, the industry commonly employs increased friction and mechanical restraints to achieve anti-detachment functionality. This design has become a relatively fixed technical approach and is widely used in various off-road wheel products. However, while it enhances the anti-detachment effect, it also increases the difficulty of tire installation. Installers need to apply extremely high atmospheric pressure to press the tire lip into the bead seat. This process is not only inefficient and laborious but also poses a significant safety hazard of tire blowout due to uncontrolled air pressure. Furthermore, the rigid contact between the rim and tire under high friction further exacerbates the difficulty of tire inflation and can easily damage the tire lip, affecting sealing performance and service life. These technical defects make it difficult to achieve a balance between safety, convenience, and reliability in existing rim-mounted anti-detachment designs, becoming a bottleneck restricting the advancement of rim technology. Utility Model Content

[0004] In view of this, the present invention provides a wheel hub that prevents tires from falling off, so as to solve the problem in the prior art of how to significantly reduce the difficulty and risk of tire inflation and installation while maintaining sufficient anti-fall-off performance, and achieve a balance between safety and convenience.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A wheel hub for preventing tire detachment, the wheel hub having a rim and spokes, the wheel hub having a convex peak that mates with the rim to form a bead seat, at least one of the convex peaks having a stepped structure on the side away from the bead seat, and the bead seat having a serrated groove.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the radial height of the bead seat convexity is 1.2-1.5 mm higher than that of a conventional convexity, meaning the height of the bead seat convexity is higher than that of a conventional convexity.

[0008] Furthermore, the roughness of at least one of the bead-side slopes away from the bead seat is 3.2.

[0009] Furthermore, the wheel hub is provided with air core holes or air core grooves.

[0010] Furthermore, the stepped structure is a double-layered step.

[0011] The beneficial effects of this utility model are: This utility model's wheel rim design for preventing tire detachment improves the ease and safety of tire installation. By setting a step below the wheel rim's raised peak, it guides the tire installation in stages, allowing the tire to first fully ascend the step and then smoothly slide into the bead seat with lower air pressure. The 3.2 surface roughness machining effectively reduces frictional resistance, making the tire easier to inflate. The serrated grooves on the bead seat provide a reliable mechanical locking structure. After the tire sidewall is engaged, traction is significantly increased, reducing the chance of tire detachment and greatly reducing installation difficulty and safety hazards. It fundamentally solves the problems of difficult inflation and high risk of tire blowout caused by excessively high raised peaks in existing technologies, achieving a harmonious balance between convenient tire installation and driving safety. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the wheel hub of this utility model; Figure 2 This is a schematic diagram of the side structure of the wheel hub of this utility model; Figure 3 This is a cross-sectional view of the hub structure of this utility model.

[0013] The attached diagram lists the components represented by each number as follows: 1. Hub; 2. Rim; 3. Spoke; 4. Peak; 5. Stepped structure; 6. Serrated groove; 7. Core hole. Detailed Implementation

[0014] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0015] like Figure 1-3 As shown, the wheel hub 1 prevents the tire from falling off. The wheel hub 1 has a rim 2, a spoke 3, and a protrusion 4 that cooperates with the rim 2 to form a bead seat. At least one of the protrusions 4 has a stepped structure 5 on the side away from the bead seat. As shown, the protrusion 4 on the side closer to the spoke 3 has a corresponding stepped structure 5. After the stepped structure 5 is set, the tire can be first inserted into the first step. At this time, a lower air pressure can be used to make it slide into the bead seat, which is convenient for installation. The bead seat has a serrated groove 6 to increase the friction and make it difficult for the tire to fall off.

[0016] In another embodiment of this utility model, the radial height of the convex peak 4 is 1.2-1.5 mm higher than that of the conventional convex peak. The height of the conventional convex peak is in accordance with the terminology, specification designation and marking of wheels and rims for pneumatic tires 2 in GB T2933-2009. This reduces the chance of the tire coming off when the tire is driven at a lower air pressure.

[0017] In another embodiment of this utility model, the roughness of the inclined surface on the side of at least one convex peak 4 away from the bead seat is 3.2, that is, the arithmetic mean deviation of the surface micro-irregularity is 3.2 micrometers, which is a medium level of precision. This part corresponds to the processing of the stepped structure 5. The step structure 5 is used to facilitate the installation of the tire and can appropriately reduce the friction, making it easier for the tire to be inflated and slide into the bead seat.

[0018] In another embodiment of this utility model, the hub 1 is provided with an air core hole 7 or an air core groove, as shown in the figure, which adopts a hole design, or a groove design, that is, a groove is opened along the width direction of the hub 1 to accommodate inner tubes of different specifications.

[0019] In another embodiment of this utility model, the stepped structure 5 is a double-layered step.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wheel hub for preventing tire detachment, the wheel hub having a rim and spokes, characterized in that, The hub has a protrusion that mates with the rim to form a bead seat, and at least one of the protrusions has a stepped structure on the side away from the bead seat, and the bead seat has a serrated groove.

2. The wheel hub for preventing tire detachment according to claim 1, characterized in that, The radial height of the convex peak is 1.2-1.5 mm higher than that of a conventional convex peak.

3. The wheel hub for preventing tire detachment according to claim 1, characterized in that, The roughness of at least one of the convex peaks on the side of the bead seat away from the bead seat is 3.

2.

4. The wheel hub for preventing tire detachment according to any one of claims 1 to 3, characterized in that, The hub is provided with an air core hole or an air core groove.

5. The wheel hub for preventing tire detachment according to any one of claims 1 to 3, characterized in that, The stepped structure is a double-layered step.

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