Scratch-proof motorcycle disc brake disc with sand discharging grooves

Abstract

The utility model relates to the technical field of motorcycle brake discs, and discloses a scratch-proof motorcycle disc brake disc with sand discharge grooves, which comprises a disc brake disc body, heat dissipation holes and screw holes, a fixing plate is fixedly arranged in the middle of the disc brake disc body, a ventilation ring is arranged on the outer side of the fixing plate, the sand discharge grooves are arranged on the outer side of the ventilation ring, the heat dissipation holes are arranged among the sand discharge grooves, and the screw holes are arranged in the heat dissipation holes. The middle of the disc brake disc body is provided with an air guide structure, discs on the two sides of the disc brake disc body are fixedly connected through reinforcing ribs, the outer arc portion of each sand discharging groove is an inclined face, the inner arc portion of each sand discharging groove is a right-angle face, and the contact face between the sand discharging grooves and the disc brake disc body and the contact face between the heat dissipation holes and the disc brake disc body are subjected to round corner treatment. When the hollow air guide structure rotates, internal low pressure drives airflow to flow in from the heat dissipation holes and to be discharged from the edge, complete air circulation is formed, the heat dissipation performance is greatly improved, no sharp face exists between the brake pad and the brake disc due to round corner treatment, the airflow is guided, the pollution discharge capacity is enhanced, and meanwhile the scratch probability is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycle brake discs, in particular to a scratch-proof motorcycle disc brake disc with a sand discharge groove. Background Art

[0002] The development history of motorcycle disc brakes can be traced back to the early 20th century. With the continuous advancement of motorcycle technology and changes in market demand, the design and performance of disc brakes have been continuously improved and enhanced. In the early days, motorcycles mainly used drum brakes, but with the passage of time, the advantages of disc brakes gradually emerged. However, the material technology of the disc brake system at that time was not developed enough, and the braking efficiency and wear resistance were not mature. With the continuous advancement of technology, the materials and manufacturing processes of brake discs have been significantly improved. Asbestos friction materials are widely used in brake disc manufacturing. Subsequently, the successful research and development of ceramic friction materials and carbon fiber friction materials have promoted the rapid development of friction materials and further improved the performance of brake discs.

[0003] Motorcycles have a long history and have evolved into many types, such as street cars, retro cars, sports cars and off-road vehicles. Among them, off-road vehicles and sports cars often need to ride in harsh environments. Complex road conditions are a great test for the vehicle's own hardware. The brake disc is one of the most important components in the vehicle's braking system. The quality of the brake disc is directly related to the vehicle's braking ability and the safety of the rider. However, existing brake discs are mostly considered in terms of cost, lightweight and braking ability, and the scratch resistance of the brake disc itself is rarely considered. Sand and dirt on the road surface are easily attached to the brake disc, and are squeezed and pressed on the brake disc by the brake caliper during braking. As the brake disc rotates at high speed, it is easy to scratch the brake disc, which in turn affects its friction performance and heat dissipation effect, ultimately leading to a decrease in braking performance and increased riding risks. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an anti-scratch motorcycle disc brake disc with a sand removal groove, which has the advantages of anti-scratch and fast heat dissipation, and solves the problem that the disc brake disc is easily damaged by friction from foreign objects.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of anti-scratch and fast heat dissipation, the utility model provides the following technical solution: an anti-scratch motorcycle disc brake disc with sand discharge grooves, comprising a disc brake disc body, heat dissipation holes and screw holes, a fixing plate is fixedly installed in the middle of the disc brake disc body, the fixing plate has screw holes arranged in a ring, a ventilation ring is provided on the outside of the fixing plate, a sand discharge groove is provided on the outside of the ventilation ring, heat dissipation holes are provided between the sand discharge grooves, an air guide structure is provided in the middle of the disc brake disc body, and the discs on both sides of the disc brake disc body are fixedly connected by reinforcing ribs.

[0008] Preferably, the heat dissipation holes are arranged in groups of five, with a total of ten groups, and are evenly arranged on both sides of the disc brake disc.

[0009] Preferably, the sand removal grooves are arranged between each group of heat dissipation holes and are symmetrically distributed on both sides of the disc brake disc.

[0010] Preferably, a ventilation ring is provided inside the sand discharge groove, and all the sand discharge grooves are connected together from the root through the ventilation ring.

[0011] Preferably, the inner cross-section of the sand removal groove is trapezoidal, the outer arc portion of the sand removal groove is an inclined surface, and the inner arc portion is a right-angle surface.

[0012] Preferably, the contact surfaces between the sand discharge groove and the heat dissipation hole and the disc brake body are all rounded.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a scratch-proof motorcycle disc brake disc with a sand removal groove, which has the following beneficial effects:

[0015] 1. The anti-scratch motorcycle disc brake with sand discharge groove is designed as a ventilated disc as a whole. The disc brake body is braked by upper and lower discs. The middle part is an air guide structure. The upper and lower discs are connected by the arc-shaped reinforcement ribs in the middle. There are through heat dissipation holes on the disc. Through the cooperation between the air guide structure and the heat dissipation holes, air can circulate from the inside and outside of the disc when the disc rotates. The air guide structure can be used as an air guide when the disc rotates, thereby further accelerating the air flow. The heat on the disc can be quickly taken away from the surface of the disc, reducing the temperature of the disc, avoiding the reduction of braking force caused by thermal attenuation of the disc, and ensuring safety during riding.

[0016] 2. The anti-scratch motorcycle disc brake with sand discharge groove has a sand discharge groove and a ventilation ring on the surface of the disc brake. The sand discharge groove is arc-shaped, and its cross-section is trapezoidal. The outer arc of the sand discharge groove is an inclined surface, and the inner arc is a right-angle surface parallel to the axial direction. When the disc brake is working, the outer arc of the sand discharge groove is the windward surface. Through the cooperation of the ventilation ring at the root of the sand discharge groove, airflow continuously passes through the sand discharge groove to form a guiding effect, thereby accelerating the gas flow in the sand discharge groove. The outer arc is relatively gentle, and air and impurities can enter the sand discharge groove along the arc surface. The inner arc is vertical and perpendicular to the incoming wind direction, and the resistance to the airflow increases rapidly. Under the joint influence of centrifugal force, the sand discharge groove is smooth and the air and impurities can enter the sand discharge groove along the arc surface. Under the action, with the arc-shaped air flow guidance of the sand discharge groove, impurities and dirt on the surface are quickly discharged, and the impurities on the surface are effectively cleaned. The contact surfaces of the sand discharge groove and the disc brake disc surface are rounded. During the friction between the brake pad and the disc brake disc, the contact between the two is smooth, without sharp surfaces, and is not easily scratched. The disc brake disc body is made of high-carbon steel with high hardness, high strength and good wear resistance. Under the action of these multiple factors, the disc brake disc can have good wear resistance and anti-slip properties, and the surface is not easily scratched, which not only achieves the beauty of the surface but also avoids the stress concentration and internal structure problems caused by surface scratches. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a longitudinal sectional view of the utility model;

[0019] Figure 3 It is a transverse cross-sectional view of the utility model.

[0020] In the figure: 1-disc brake body, 2-heat dissipation holes, 3-sand discharge grooves, 4-reinforcement ribs, 5-ventilation rings, 6-screw holes, 7-fixing plates, 8-air guide structure. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "left", "right", "front", "back", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] See also Figure 1 , a scratch-proof motorcycle brake disc with a sand discharge groove comprises a disc brake disc body 1, a heat dissipation hole 2 and a screw hole 6. A fixing plate 7 is fixedly installed in the middle of the disc brake disc body 1. The middle of the fixing plate 7 is hollowed out, and the inner ring part has an annularly distributed screw holes 6. The height of the fixing plate 7 is slightly higher than the disc brake disc body 1. During installation, it is fixedly installed at the center of the wheel hub through the screw holes 6, so that the disc brake disc body 1 is closer to the wheel hub and can be located at the center of the brake caliper, so that the braking pressure and friction on both sides of the disc brake disc can be well balanced. A ventilation ring 5 is provided on the outside of the fixing plate 7, and a sand discharge groove 3 is provided on the outside of the ventilation ring 5. The root of the sand discharge groove 3 is communicated with the ventilation ring 5. When the disc brake disc rotates, the ventilation ring 5 drives the gas flow in the sand discharge groove 3, and the centrifugal force Under the dual action, impurities and dirt inside the sand discharge groove 3 can be quickly discharged. There are heat dissipation holes 2 between the sand discharge grooves 3. The heat dissipation holes 2 are in a group of five, and a total of ten groups are evenly distributed between the sand discharge grooves 3. The two sides of the disc brake disc body 1 are braking structures, and the middle part is a hollow air guide structure 8. The heat dissipation holes 2 run through the inner and outer sides of the disc brake disc to form an air circulation channel. The middle air guide structure 8 can be used as an air guide when the disc brake disc rotates, further accelerating the flow of air, so that the heat generated by the disc brake disc during braking is quickly taken out by the air, reducing the temperature of the disc brake disc body 1 and ensuring good braking performance. The disc brake disc body 1 is made of high carbon steel and has the advantages of high hardness, high strength, good wear resistance, etc. It is not easy to be scratched due to friction with foreign objects.

[0024] See also Figure 1 and Figure 2The cross section of the sand discharge groove 3 is trapezoidal, wherein the outer arc portion of the sand discharge groove 3 is an inclined surface, the bottom of the sand discharge groove is a plane, and the inner arc portion is vertical and perpendicular to the incoming wind surface. Such a design allows the airflow to first pass through the outer arc portion of the sand discharge groove 3 when the disc brake disc rotates. The outer arc portion with the inclined surface can guide the airflow into the sand discharge groove 3, and the inner arc portion is perpendicular to the incoming wind surface, which blocks the airflow. Under the action of centrifugal force, the airflow enters the sand discharge groove 3 and is discharged from the edge of the sand discharge groove 3. During use, when the airflow flows through the surface of the disc brake disc, it can drive the dirt and impurities on the surface to enter the sand discharge groove 3 and be discharged together, ensuring that there will be no foreign matter on the surface of the disc brake disc, and that the disc brake disc will not be scratched by foreign matter during riding and braking. The contact surfaces of the sand discharge groove 3 and the heat dissipation hole 2 with the disc brake disc body 1 are all rounded. When the brake pad generates pressure on the disc brake disc for braking, these rounded corners can avoid scratches between the brake pad and the disc brake disc. At the same time, they can also guide the airflow, accelerate the discharge of foreign matter and impurities, and prevent scratches on the surface of the disc brake disc during operation. When the brake pad is close to the disc brake disc for braking, if there is foreign matter between the two, the high-carbon steel disc brake disc surface can resist wear and impact. When the brake pad rotates through the sand discharge groove 3 and the heat dissipation hole 2, the foreign matter in the middle will enter along the rounded surface and the airflow and be discharged from the disc brake disc under the joint action of the airflow and centrifugal force, effectively preventing foreign matter from damaging the disc brake disc.

[0025] See also Figure 1 and Figure 3 The disc brake disc body 1 is hollow in arrangement, and the discs on the upper and lower sides are fixedly connected by the reinforcing ribs 4 in the middle. The two sides and the interior of the reinforcing ribs 4 are air guide structures 8. When the disc brake disc rotates, the air guide structure 8 can drive the airflow to pass quickly through the middle of the disc brake disc, thereby accelerating the flow of airflow. There are through heat dissipation holes 2 on the disc brake disc. When the airflow passes through the air guide structure 8, due to the fast airflow movement speed there, the air pressure inside the air guide structure 8 is lower than the external atmospheric pressure. The air on both sides enters the air guide structure from the heat dissipation holes 2 and is discharged along the outside of the air guide structure 8 and the reinforcing ribs 4. The airflow forms a complete passage from the outside to the inside of the disc brake disc, which greatly enhances the heat dissipation capacity of the disc brake disc and reduces the temperature of the disc brake disc, thereby ensuring good braking performance and avoiding the problem of easy scratches on the disc brake disc due to temperature rise.

[0026] Working principle: After the disc brake body 1 is installed in the specified direction, tighten the bolts to complete the fixation of the disc brake body 1. During driving, when the disc brake disc is contaminated with foreign matter and impurities, since the outer arc of the sand discharge groove 3 on the disc brake disc is an inclined surface, and the contact surface with the disc brake disc surface is rounded, the airflow is guided to the inside of the sand discharge groove 3 when flowing through the surface. The inner arc of the sand discharge groove 3 is vertical and perpendicular to the incoming wind surface. Under the action of centrifugal force, the airflow enters the sand discharge groove 3 and is discharged from the edge of the sand discharge groove 3. During the movement of the airflow, Impurities and dirt attached to the surface can be prevented from being scratched by the friction between the brake pad and the disc brake disc due to the rounded corners of the contact surfaces between the disc brake disc surface, the heat dissipation holes 2 and the sand discharge grooves 3. The air guide structure 8 in the middle of the disc brake disc body 1 accelerates the air flow and discharges the air from the edge during the rotation of the disc brake disc, so that the internal air pressure of the air guide structure 8 is lower than the external air pressure. The external air enters the air guide structure 8 from the heat dissipation holes 2 and is discharged from the edge as the disc brake disc rotates, forming a complete air flow cycle and accelerating the heat dissipation.

[0027] To sum up, the anti-scratch motorcycle disc brake with sand removal groove is designed as a ventilated disc as a whole. The disc brake disc body 1 brakes through the upper and lower parts of the disc, the middle part is the air guide structure 8, the upper and lower parts of the disc are connected by the arc-shaped reinforcement rib 4 in the middle, and there are through-holes 2 on the disc. Through the cooperation between the air guide structure 8 and the heat dissipation holes 2, the air can circulate from the inside and outside of the disc when the disc rotates. The air guide structure 8 can serve as an air guide when the disc rotates, thereby further accelerating the air flow. The heat on the disc can be quickly taken away from the surface of the disc, which reduces the temperature of the disc, avoids the reduction of braking force caused by thermal attenuation of the disc, and ensures safety during riding. A sand discharge groove 3 and a ventilation ring 5 are arranged on the surface of the disc brake. The sand discharge groove 3 is arc-shaped, and its cross section is trapezoidal. The outer arc portion of the sand discharge groove 3 is an inclined surface, and the inner arc portion is a right-angled surface parallel to the axial direction. When the disc brake is working, the outer arc portion of the sand discharge groove 3 is the windward surface. Through the cooperation of the ventilation ring 5 at the root of the sand discharge groove 3, airflow continuously passes through the sand discharge groove 3 to form a guiding effect, thereby accelerating the gas flow in the sand discharge groove 3. The outer arc portion is relatively gentle, and air and impurities can enter the sand discharge groove 3 along the arc surface. The inner arc portion is vertical and perpendicular to the incoming wind direction, and the resistance to the airflow increases rapidly. Under the joint action of centrifugal force, Cooperating with the arc-shaped airflow guide of the sand discharge groove 3, impurities and dirt on the surface are quickly discharged, and the impurities on the surface are effectively cleaned. The contact surfaces of the sand discharge groove 3 and the disc brake disc surface are rounded. During the friction between the brake pad and the disc brake disc, the contact between the two is smooth, without sharp surfaces, and is not easily scratched. The disc brake disc body is made of high-carbon steel with high hardness, high strength and good wear resistance. Under the action of these multiple factors, the disc brake disc can have good wear resistance and anti-slip properties, and the surface is not easily scratched, which not only achieves the beauty of the surface but also avoids the stress concentration and internal structure problems caused by surface scratches.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A scratch-proof motorcycle disc brake disc with a sand removal groove comprises a disc brake disc body (1), a heat dissipation hole (2) and a screw hole (6), and is characterized in that: A fixing plate (7) is fixedly installed in the middle of the disc brake disc body (1), the fixing plate (7) is provided with screw holes (6) arranged in an annular manner, a ventilation ring (5) is provided on the outer side of the fixing plate (7), a sand discharge groove (3) is provided on the outer side of the ventilation ring (5), heat dissipation holes (2) are provided between the sand discharge grooves (3), an air guide structure (8) is provided in the middle of the disc brake disc body (1), and the discs on both sides of the disc brake disc body (1) are fixedly connected by reinforcing ribs (4).

2. The anti-scratch motorcycle disc brake disc with sand removal groove according to claim 1, characterized in that: The heat dissipation holes (2) are arranged in groups of five, with a total of ten groups, and are evenly arranged on both sides of the disc brake body (1).

3. The anti-scratch motorcycle disc brake disc with sand removal groove according to claim 1, characterized in that: The sand discharge grooves (3) are arranged between each group of heat dissipation holes (2) and are symmetrically distributed on both sides of the disc brake body (1).

4. The anti-scratch motorcycle disc brake disc with sand removal groove according to claim 1, characterized in that: A ventilation ring (5) is provided inside the sand discharge groove (3), and all the sand discharge grooves (3) are connected together from the root through the ventilation ring (5).

5. The anti-scratch motorcycle disc brake disc with sand removal groove according to claim 1, characterized in that: The inner cross section of the sand discharge groove (3) is trapezoidal, the outer arc portion of the sand discharge groove (3) is an inclined surface, and the inner arc portion is a right-angle surface.

6. The anti-scratch motorcycle disc brake with sand removal groove according to claim 1, characterized in that: The contact surfaces between the sand discharge groove (3) and the heat dissipation hole (2) and the disc brake body (1) are all rounded.

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