Split rear anti-lock braking system for motorcycle hub and spoke protection.

Description

1 / 4 Split rear anti-lock braking system for motorcycle hub and spoke protection.

[001] This utility model patent, applied to the field of mechanics, presents an Anti-Locking system to protect the hub and spoke of your motorcycle against damage caused by the chain falling or shifting. Its application prevents impacts and wear, ensuring that the chain remains in place during riding, reducing the risk of mechanical failures and increasing safety, extending the lifespan of critical motorcycle parts and maintaining optimal performance.

[002] The anti-lock device is an accessory designed for motorcycles, especially off-road models, with the main function of preventing the chain from detaching from the sprocket and becoming lodged between the hub and the spokes of the rear wheel. This problem is common in situations of intense use or on uneven terrain, and can cause significant damage to the motorcycle and compromise the rider's safety.

[003] The main functions of the Anti-Locking System are: • Prevention of Damage to the Hub and Spokes: By preventing the chain from getting caught between the hub and spokes, the Anti-lock Braking System protects these components from deformation or breakage that could result in costly repairs and motorcycle downtime; • Chain Tension Maintenance: By keeping the chain on its proper path, this accessory ensures the correct tension, preventing premature wear of both the chain and the sprocket and pinion; • Easy Chain Replacement: In case of detachment, the anti-lock system allows the chain to be repositioned without the need for specific tools, offering convenience to the rider, especially in off-road environments where access to tools may be limited.

[004] Chain failure during riding can lead to dangerous situations, including loss of control of the motorcycle. Hence the importance of using an anti-lock device, since Petition 870250089301, dated 10 / 01 / 2025, page 7 / 11 2 / 4 minimizes this risk, providing a safer riding experience. Therefore, the anti-lock braking system is an essential accessory for motorcyclists seeking to increase the durability of their vehicles and ensure safe riding, especially in challenging conditions.

[005] Searches conducted in the world's leading patent databases revealed the situation below, which presents the trend of the state of the art of the technology for which a patent is now being sought by this official body.

[006] Patent MU 8801984-5 presents an arrangement introduced in a motorcycle sprocket guard that integrates a unique annular structure, injected in polymeric materials, whose adopted materials eliminate vibration and imbalance at medium and high speeds. Due to its unique structure, this device requires the motorcycle wheel to be disassembled to allow its installation and assembly.

[007] Patent PI 1103560-9 presents improvements introduced in a chain guard applied to the hub and sprocket assembly of motorcycles in general. More precisely, it concerns a chain guard applied to the hub and sprocket assembly where the guard provides coverage for the chain in the area of ​​the differential to the intermediate hub of the motorcycle.

[008] The protector is presented in two parts, configured by a pair of discs which have a central hole from which a flat section develops where, in turn, multiple threaded holes are made, which are arranged radially. The two-part structure presented for the protector divides it into two discs which, in the same way as a single disc, require the removal of the motorcycle wheel to allow its installation and assembly. Petition 870250089301, dated 10 / 01 / 2025, page 8 / 11 3 / 4

[009] Patents PI 0402161-4 and PI 1001821-2 describe a motorcycle chain and sprocket guard, consisting of a disc-shaped flange fixed to the wheel hub, between the sprocket and the spokes of the motorcycle wheel, preventing the chain, when it leaves its predefined path by the sprocket, from falling onto the wheel spokes, causing it to lock and consequently causing the motorcycle rider to fall, as well as material damage to the hub, chain and sprocket. Similarly, due to its unique structure, this device requires the motorcycle wheel to be disassembled to allow its installation and assembly.

[010] Therefore, it is clear that none of the solutions presented demonstrates the degree of inventiveness of the creation described here, in order to truly improve the state of the art. The technology proposed here can be better understood with the help of the figures described below:

[011] Figure 1 shows a 3D drawing of the Anti-lock system with the two halves of the rim joined together.

[012] Figure 2 shows a 3D drawing of one of the rim halves, visualizing the holes for joining the half-rims.

[013] Figure 3 shows a photo of the Anti-lock Braking System installed on the rear wheel of a motorcycle.

[014] Figure 1 shows a photo of the Anti-lock system with the two semi-rings mounted and bolted on.

[015] The present patent, “TWO-PART REAR ANTI-LOCK SYSTEM FOR PROTECTION OF MOTORCYCLE HUB AND SPOKE” presents the differential of allowing its installation without the need to disassemble the wheel or any other part of the motorcycle. As it is two-part, in the direction Petition 870250089301, dated 10 / 01 / 2025, page 9 / 11 With a 4 / 4 cross-section of its radius, its assembly is easy and efficient in any situation. The system is connected by two screws and two nuts, with no restrictions on the type of connection.

[016] This system comprises two semi-rims (1) with an angular amplitude of 180°, so that when joined, they form the complete 360° rim. The rims can be made with various diameters to allow adjustment to various types of wheels and motorcycles. The angular amplitude of the semi-rims (1) can also have values ​​other than 180°, without restrictions when the construction of the semi-rims (1) is arranged.

[017] The semi-rims (1) have a slot with a hole (2) that allows them to be joined by means of screws (3) with nuts, with one screw (3) at each end of the semi-rim (1) to promote a more precise fastening. The fastening system can be made by screws, rivets, quick couplings, without restrictions. Petition 870250089301, dated 10 / 01 / 2025, page 10 / 11

Claims

1 / 1 CLAIM 1. “SPLIT REAR ANTI-LOCK SYSTEM FOR PROTECTING MOTORCYCLE HUB AND SPOKES”, characterized by comprising split half-rings (1) in the transverse direction of their radius, with slots with holes (2) that allow the joining of the half-rings (1) by means of screws (3) with nuts, forming a complete 360° ring, to allow its installation without the need to disassemble the wheel or any other part of the motorcycle. Petition 870250089301, dated 10 / 01 / 2025, page 11 / 11

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