Tire bead locking ring for preventing tire from knocking over

Abstract

The invention relates to a tire bead locking ring capable of preventing a tire from knocking over, in particular to a tire bead locking ring capable of ensuring that a tire bead does not slip towards the center of a rim when the tire is in a low-air-pressure or zero-air-pressure state. The tire bead locking ring 2 is a rubber circular ring located at the bottom of the rim 1, and the two ends of the circular ring abut against the inner side of the tire bead 3 to prevent the tire bead 3 from sliding. The wheel rim is characterized in that the outer surface of the circular ring is a plane, and the outer diameter phi Dh of the circular ring, the diameter phi D of the wheel rim and the height G of the wheel flange meet the condition that 1 / 2G < = 1 / 2 (phi Dh-phi D) < = G; the inner surface of the circular ring is attached to the rim, and two or more friction strips are arranged on the inner surface in the circumferential direction so that the friction force between the circular ring and the rim can be increased, and slippage between the circular ring and the rim can be prevented. Two ends of the circular ring are in contact with the tire bead, and the end material is soft to avoid damage to an airtight layer of the tire bead; the circular ring has enough compressive strength and rigidity in the axial direction, so that when the air pressure of the tire is reduced, the circular ring can abut against the tire bead without being damaged or deformed.

Description

Technical Field

[0001] The present invention belongs to the technical field of tires, and relates to a bead locking ring for preventing tire bead unseating, in particular to a bead locking ring that can ensure that the bead does not slip towards the center of the rim when the tire is in a low-pressure or zero-pressure state. Background Art

[0002] For vehicles equipped with a central inflation and deflation system, when driving on relatively soft ground such as deserts, river beaches, swamps, etc. or when crossing obstacles such as rocks and mountains, it is necessary to appropriately reduce the tire pressure according to the actual situation to increase the tire contact area with the ground in order to obtain good passability. However, when the tire pressure is reduced, the force pressing the bead against the rim seat will also decrease accordingly. At the same time, when the vehicle is driving, especially when turning, the sidewall of the tire will undergo obvious torsional deformation, and the force exerted by the sidewall to push the bead away from the rim edge will also increase, causing the bead to disengage from the rim edge and slip towards the middle, resulting in a bead unseating accident.

[0003] Currently, the technology for preventing tire bead unseating mainly involves making certain modifications to the rim to prevent the bead from slipping, so as to achieve the purpose of preventing bead unseating. Generally speaking, it can be divided into inner anti-unseating technology and outer anti-unseating technology relative to the position of the bead. For example, the rim described in Patent CN110962509A adds convex peaks on the inner side of the bead, so that the bead is just stuck between the rim edge and the convex peaks to prevent the bead from slipping, which belongs to inner anti-unseating technology; the rim described in Patent CN209336412U tightly clamps the bead from the outside of one bead using a chuck, so that the bead cannot move, which belongs to outer anti-unseating technology. These two types of technologies have their own advantages and disadvantages. The inner anti-unseating technology is simple to install but cannot completely prevent unseating; the outer anti-unseating technology has a better anti-unseating effect, but is heavy and costly. At the same time, because the metal chuck is directly stuck on the tire, it will inevitably cause certain damage to the tire and affect the tire life. Summary of the Invention

[0004] The purpose of the present invention is to provide a bead locking ring that can firmly lock the beads on both sides of the tire to the rim seat, achieving a good anti-unseating effect and not causing damage to the tire body, solving the problems existing in the current tire anti-unseating technology, and being simple and practical.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A bead locking ring for preventing tire bead unseating, in particular to a bead locking ring that can ensure that the bead does not slip towards the center of the rim when the tire is in a low-pressure or zero-pressure state. The bead locking ring is a rubber ring located at the bottom of the rim, and both ends of the ring abut against the inner side of the bead to prevent the bead from slipping.

[0007] It is characterized in that:

[0008] The outer surface of the bead locking ring is a plane, and the outer diameter of the bead locking ring is φD h satisfies the condition with the rim diameter φD and the flange height G: 1 / 2G ≤ 1 / 2(φD h - φD) ≤ G;

[0009] The inner surface of the bead locking ring fits with the rim, varies with the rim profile, and has more than two friction strips arranged circumferentially on the inner surface. The height of the friction strips is about 1-2 mm to increase the friction force between the bead locking ring and the rim and prevent relative sliding between the bead locking ring and the rim;

[0010] Both ends of the bead locking ring contact the bead, and the end shape can adapt to and fit the inner contour of the bead. The end material is relatively soft to avoid damaging the airtight layer of the bead part;

[0011] The bead locking ring has sufficient compressive strength and stiffness in the axial direction to ensure that it can resist the bead without damage or deformation when the tire pressure drops.

[0012] The beneficial effects of the present invention are:

[0013] The bead locking ring described in the present invention can lock both bead sides of the tire on the rim at the same time, has a good anti - detachment effect, is suitable for all terrains, and improves the traction and controllability of the tire when used under reduced pressure; the bead locking ring does not damage the tire body, does not destroy the airtightness of the tire, is simple to manufacture and install. In addition to off - road use, the bead locking ring of the present invention can also be installed on general vehicles to prevent the tire from slipping off the rim and improve safety. Brief Description of the Drawings

[0014] Figure 1 is a schematic diagram of the bead locking ring body;

[0015] Figure 2 is a schematic diagram after the bead locking ring is installed.

[0016] The markings in the figure are as follows: 1 - rim; 2 - bead locking ring; 3 - bead; 4 - friction strip on the inner surface of the bead locking ring; 5 - end of the bead locking ring; φD h - outer diameter of the bead locking ring; φD - rim diameter; G - flange height. Detailed Description of the Embodiment

[0017] The present invention will be described in detail below in conjunction with the drawings and specific embodiments.

[0018] As Figure 1 shown, the bead locking ring 2 described in the present invention is a rubber ring with a specific width. The outer surface of the rubber ring is a plane, the inner surface fits on the rim 1, and both ends of the ring contact the inner surface of the bead 3.

[0019] Specifically, the outer diameter φD of the bead locking ring 2 is h The condition between the rim diameter φD and the rim height G is: 1 / 2G≤1 / 2(φD h -φD)≤G to ensure that the bead locking ring 2 can tightly lock the bead 3.

[0020] The inner surface profile of the bead locking ring 2 may be different according to the profile of the rim 1 . Generally, the bead locking ring 2 can fit closely with the rim 1 .

[0021] Furthermore, more than two friction strips 4 are circumferentially arranged on the inner surface of the bead locking ring 2, which are about 1 to 2 mm high and have rounded edges. This increases the friction between the bead locking ring 2 and the rim 1 without affecting the installation, thereby preventing relative sliding between the bead locking ring 2 and the rim 1.

[0022] Furthermore, both ends of the bead locking ring 2 are in contact with the inner surface of the bead 3, and the shape of the bead locking ring end 5 is adapted to and fits the shape of the inner contour of the bead 3. At the same time, the material of the contact portion of the bead locking ring end 5 is relatively soft to avoid damaging the airtight layer and affecting the airtightness of the tire.

[0023] Furthermore, the bead locking ring 2 has sufficient strength and rigidity in the axial direction, and will not be damaged or deformed when squeezed by the bead 3.

[0024] As a preferred solution of this embodiment, the friction strips 4 on the inner surface of the bead locking ring can be evenly arranged in the axial direction and the number can be larger, so that the friction between the bead locking ring and the rim is greater and less likely to slide relative to each other.

[0025] As a preferred solution of this embodiment, reinforcing ribs with a certain compressive strength, such as engineering plastics, lightweight alloys, etc., can be added to the tire bead locking ring 2, so that the tire bead locking ring 2 has greater axial compressive strength and rigidity to cope with tires with greater loads and usage strengths and prevent the tire from falling off.

[0026] Figure 2 The bead locking ring 2 is a schematic diagram after being installed. The bead locking ring 2 tightly clamps the rim 1 and can lock the tire beads 3 on both sides to prevent the tire beads 3 from slipping, thereby effectively preventing the tire from falling off and improving the traction and handling of the tire when the tire is used at reduced pressure.

[0027] The bead locking ring of the present invention can be installed on general vehicles in addition to off-road applications to prevent the tire from falling off the bead and improve safety.

[0028] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in any other form. Any person skilled in the relevant art can use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A bead locking ring for preventing tire bead unseating, particularly relating to a bead locking ring that can ensure that the bead does not slip towards the center of the rim when the tire is in a low-pressure or zero-pressure state. It is characterized in that the bead locking ring is a rubber ring located at the bottom of the rim, and both ends of the ring abut against the inner side of the bead to prevent the bead from slipping.

2. The bead locking ring according to claim 1, characterized in that: The outer surface of the bead locking ring is a plane, and the outer diameter of the bead locking ring is φD h satisfies the condition with the rim diameter φD and the flange height G: 1 / 2G ≤ 1 / 2(φD h - φD) ≤ G; the inner surface of the bead locking ring fits the rim, varies according to the contour of the rim, and is provided with more than two friction strips along the circumferential direction on the inner surface. The friction strips are about 1-2 mm high to increase the frictional force between the bead locking ring and the rim and prevent relative sliding between the bead locking ring and the rim; both ends of the bead locking ring contact the bead, and the end shape can adapt to and fit the inner contour of the bead. The end material is relatively soft to avoid damaging the airtight layer of the bead part; the bead locking ring has sufficient compressive strength and stiffness in the axial direction to ensure that it can abut against the bead without damage or deformation when the tire pressure drops.

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