Lightweight automobile brake disc

Abstract

The utility model belongs to the technical field of automobile brake systems, and particularly relates to a light-weight automobile brake disc. The outer side of the disc body is provided with an arc-shaped groove and embedded radiating fins, and the groove is filled with a heat-conducting silica gel layer; a mounting hole is formed in the center of the disc body, honeycomb lightening holes are formed around the disc body, and a tungsten carbide coating is sprayed on the inner wall; a first reinforcing rib and a second reinforcing rib are arranged on the two sides of the disc body and are welded and fixed through a connecting plate. The disc body is made of an aluminum alloy base material, the surface of the disc body is subjected to anodic oxidation and graphene coating treatment, and the disc body has both light weight and corrosion resistance. By optimizing the structural design, the weight is remarkably reduced while the strength is guaranteed, the heat dissipation performance is improved, and the automobile brake pad is suitable for a high-performance vehicle brake system and meets the requirements of modern automobiles for light weight and efficient heat dissipation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile brake system, concretely is a kind of light weight automobile brake disc. BACKGROUND

[0002] During braking, brake disc generates a lot of heat due to friction, and if the heat cannot be dissipated in time, it will affect the braking performance and safety. After searching, a kind of automobile brake disc with the publication number CN109027060B was disclosed on January 21, 2020. The design improves the heat dissipation effect by setting cooling liquid, heat-sensitive elastic sheet, through hole and heat sink in the brake disc. Although this structure can improve the heat dissipation performance to some extent, the overall structure is relatively complex, which increases the manufacturing difficulty and production cost. At the same time, the design does not optimize the material or structure of the brake disc, so the weight is still relatively high, which cannot meet the demand of modern automobile parts lightweight. In addition, the balance between weight and heat dissipation performance of traditional brake disc is insufficient, which further limits its application in high-performance vehicles.

[0003] Therefore, it is urgent to design a light weight automobile brake disc to solve the problem of heat dissipation performance and lightweight. INVENTION CONTENTS

[0004] To solve the technical problems of the existing automobile brake disc mentioned in the background art, such as high manufacturing difficulty and cost increase due to complex internal structure, and difficulty in meeting the demand of modern automobile due to non-lightweight optimization, a light weight automobile brake disc is provided to balance the heat dissipation performance and lightweight.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the light weight automobile brake disc of the utility model is as follows:

[0006] A light weight automobile brake disc, comprising a disc body and a heat dissipation assembly, a plurality of arc-shaped grooves are arranged on the outer side of the disc body, the arc-shaped grooves are uniformly distributed along the circumference of the disc body, a plurality of groups of heat dissipation fins are embedded in the arc-shaped grooves, the heat dissipation fins are fixed in the arc-shaped grooves by bolts, and a heat-conducting silica gel layer is filled between the heat dissipation fins and the arc-shaped grooves. A mounting hole is arranged at the center of the disc body, a plurality of groups of weight reduction holes are arranged around the mounting hole, the weight reduction holes are arranged in a honeycomb shape, and a tungsten carbide coating is sprayed on the inner wall of the weight reduction holes. First and second reinforcing ribs are arranged on the two side surfaces of the disc body respectively, the first and second reinforcing ribs extend along the radial direction of the disc body, and the first and second reinforcing ribs are fixed by welding through a connecting plate.

[0007] Further, the disc body is made of an aluminum alloy base material, the surface of the aluminum alloy base material is subjected to anodic oxidation treatment, the thickness of the anodic oxidation layer is 20-30 microns, and the surface of the anodic oxidation layer is coated with a graphene coating, and the thickness of the graphene coating is 5-10 microns.

[0008] Further, the heat dissipation fin is made of copper-aluminum alloy composite material, the copper content of the copper-aluminum alloy composite material is 30%-40%, and the aluminum content is 60%-70%. The heat dissipation fin is provided with a plurality of convex parts, the convex parts are uniformly distributed along the length direction of the heat dissipation fin, the height of the convex part is 2-3mm, and the convex part is integrally formed with the heat dissipation fin.

[0009] Further, the groove bottom of the arc-shaped groove is provided with a plurality of flow guide holes, the flow guide holes penetrate through the two side surfaces of the disc body, the diameter of the flow guide hole is 3-5mm, the flow guide holes are uniformly distributed along the length direction of the arc-shaped groove, and the spacing between adjacent flow guide holes is 8-10mm.

[0010] Further, the number of weight reduction holes is 12-16, the diameter of the weight reduction hole is 10-15mm, and the center distance of the weight reduction hole is 20-25mm. The thickness of the tungsten carbide coating sprayed on the inner wall of the weight reduction hole is 0.1-0.2mm, and the surface roughness of the tungsten carbide coating is Ra0.8-Ra1.6.

[0011] Further, the cross-sectional shape of the first and second reinforcing ribs is trapezoidal, and the included angle between adjacent reinforcing ribs is 90°.

[0012] Further, the thickness of the connecting plate is 2-3mm, the connecting plate is fixed at both ends with the first and second reinforcing ribs by spot welding, the number of spot welding points is 3-5, and the diameter of the spot welding point is 4-6mm.

[0013] Further, the number of mounting holes is 5-8, the diameter of the mounting hole is 12-16mm, and the center distance of the mounting hole is 30-40mm. The inner wall of the mounting hole is provided with a thread, the thread depth is 5-8mm, and the thread angle is 60°.

[0014] Further, the outer edge of the disc body is provided with an annular groove, the width of the annular groove is 10-15mm, the depth is 3-5mm, the annular groove is embedded with a sealing ring, the material of the sealing ring is fluorine rubber, and the cross-sectional diameter of the sealing ring is 5-8mm.

[0015] The light weight automobile brake disc has the following advantages:

[0016] By incorporating arc-shaped grooves and heat sinks on the outer side of the disc, the efficient thermal conductivity of the heat sinks rapidly transfers heat to the outside. Simultaneously, the airflow holes within the arc-shaped grooves accelerate airflow, further enhancing heat dissipation. The disc body utilizes an aluminum alloy substrate with anodizing and graphene coating treatments, reducing overall weight while improving corrosion and wear resistance. The honeycomb arrangement of the weight-reducing holes significantly reduces disc weight while maintaining structural strength, and the application of a tungsten carbide coating further enhances the wear resistance of these holes. The first and second reinforcing ribs are welded together via connecting plates, forming a stable support structure that effectively disperses stress generated during braking and prevents disc deformation. The sealing ring embedded within the annular groove prevents external impurities from entering the disc, extending its service life. The overall structural design is rational, and the manufacturing process is simple, significantly improving heat dissipation performance while meeting lightweight requirements, making it suitable for braking systems in high-performance vehicles. Attached Figure Description

[0017] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Fig. 2 This is a schematic diagram of the overall structure of the arc-shaped groove and heat sink of this utility model;

[0019] Fig. 3 This is a schematic diagram of the overall structure of the reinforcing rib and connecting plate of this utility model.

[0020] The attached figures are labeled as follows:

[0021] 1. Plate body; 2. Arc groove; 3. Heat sink; 4. Weight reduction hole; 5. First reinforcing rib; 6. Second reinforcing rib; 7. Connecting plate; 8. Mounting hole; 9. Annular groove; 10. Sealing ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] This utility model discloses a lightweight automotive brake disc comprising a disc body 1, an arc-shaped groove 2, a heat sink 3, a weight-reducing hole 4, a first reinforcing rib 5, a second reinforcing rib 6, a connecting plate 7, a mounting hole 8, an annular groove 9, and a sealing ring 10. These components achieve optimized lightweighting and heat dissipation through specific structural design and positional relationships. The following description, in conjunction with... Figs. 1 to 3 The specific embodiments of this utility model will be described in detail.

[0026] Example 1

[0027] The disc body 1 is the core component of the entire brake disc, made of aluminum alloy. This material choice aims to reduce overall weight and improve heat conduction performance. Multiple arc-shaped grooves 2 are formed on the outer side of the disc body 1, evenly distributed around its circumference. Each arc-shaped groove 2 contains multiple sets of heat dissipation fins 3. The heat dissipation fins 3 are fixed to the inside of the arc-shaped grooves 2 with bolts. During fixing, a thermally conductive silicone layer is filled between the heat dissipation fins 3 and the arc-shaped grooves 2 to ensure tight contact. Multiple airflow guide holes are provided at the bottom of the arc-shaped grooves 2. These guide holes, with a diameter of 3-5 mm, penetrate both sides of the disc body 1 and are evenly distributed along the length of the arc-shaped grooves 2, with a spacing of 8-10 mm between adjacent guide holes. The design of the guide holes allows air to convect during brake disc operation, thereby accelerating heat dissipation. The groove 2 has a chamfered edge with a chamfer angle of 45° and a chamfer width of 1-2 mm. The chamfered surface is polished, and the surface roughness after polishing is Ra0.4-Ra0.8. This design not only reduces stress concentration but also improves the appearance quality.

[0028] The heat sink 3 is made of a copper-aluminum alloy composite material, with a copper content of 30%-40% and an aluminum content of 60%-70%. The surface of the heat sink 3 has multiple protrusions, evenly distributed along its length, with a height of 2-3 mm, and integrally formed with the heat sink 3. This protrusion design increases the surface area of ​​the heat sink 3, thereby further improving heat dissipation. The high thermal conductivity of the heat sink 3 enables rapid transfer of heat generated by the plate 1 during operation to the outside, while the airflow holes further enhance heat dissipation efficiency by guiding airflow.

[0029] The disc body 1 has 5-8 mounting holes 8 at its center, with a diameter of 12-16 mm and a center-to-center distance of 30-40 mm. The inner wall of the mounting holes 8 is threaded with a thread depth of 5-8 mm and a thread angle of 60°. This design facilitates the installation and removal of the brake disc from the vehicle wheel hub. Around the mounting holes 8 are multiple sets of weight-reducing holes 4, arranged in a honeycomb pattern, numbering 12-16, with a diameter of 10-15 mm and a center-to-center distance of 20-25 mm. The inner wall of the weight-reducing holes 4 is coated with a tungsten carbide coating with a thickness of 0.1-0.2 mm and a surface roughness of Ra0.8-Ra1.6. The application of the tungsten carbide coating significantly improves the wear resistance of the inner wall of the weight-reducing holes 4, while the honeycomb arrangement effectively reduces the overall weight of the disc body 1 while maintaining structural strength.

[0030] Example 2

[0031] Based on Example 1, reinforcing ribs were added, and the reinforcing ribs were fixedly installed on both sides of the disc body 1.

[0032] The reinforcing ribs include a first reinforcing rib 5 and a second reinforcing rib 6, both extending radially along the disc body 1. Both ribs have a trapezoidal cross-sectional shape, and the included angle between adjacent reinforcing ribs is 90°. The first reinforcing rib 5 and the second reinforcing rib 6 are welded together by a connecting plate 7, which is 2-3 mm thick. Both ends of the connecting plate 7 are spot-welded to the first reinforcing rib 5 and the second reinforcing rib 6 respectively, with 3-5 spot welds of 4-6 mm in diameter. This welding method forms a stable support structure, effectively dispersing the stress generated during braking and preventing deformation of the disc body 1.

[0033] The outer edge of the disc body 1 has an annular groove 9, which is 10-15 mm wide and 3-5 mm deep. A sealing ring 10 is embedded within the annular groove 9. The sealing ring 10 is made of fluororubber and has a cross-sectional diameter of 5-8 mm. Its function is to prevent external impurities from entering the disc body 1, thus extending the service life of the brake disc. The surface of the disc body 1 is anodized, with an anodized layer thickness of 20-30 micrometers. A graphene coating, 5-10 micrometers thick, is then applied to the surface of the anodized layer. The anodizing treatment improves the corrosion resistance of the disc body 1, while the graphene coating further enhances its wear resistance.

[0034] In practical applications, when a vehicle brakes, friction occurs between the brake disc and brake pads. The heat generated during this friction is conducted through the disc body 1 to the heat sink 3. The efficient thermal conductivity of the heat sink 3 rapidly transfers the heat to the outside, while the guide holes in the arc-shaped groove 2 guide airflow, further accelerating heat dissipation. The stable structure formed by welding the first reinforcing rib 5 and the second reinforcing rib 6 together with the connecting plate 7 effectively disperses the stress generated during braking, preventing deformation of the disc body 1. The honeycomb arrangement of the weight-reducing holes 4 significantly reduces the overall weight of the disc body 1 while maintaining structural strength, while the application of the tungsten carbide coating improves the wear resistance of the inner wall of the weight-reducing holes 4. The sealing ring 10 embedded in the annular groove 9 prevents external impurities from entering the disc body 1, extending the service life of the brake disc.

[0035] To enable those skilled in the art to fully understand and implement this utility model, the following supplementary explanation of the specific implementation principle of this utility model is provided in conjunction with a specific application scenario.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 light weight automotive brake disc characterized in that: The utility model relates to a disc body (1), arc groove (2), fin (3), weight reduction hole (4), first reinforcing rib (5), second reinforcing rib (6), connecting plate (7), mounting hole (8), annular groove (9) and sealing ring (10) are included, disc body (1) outside is equipped with a plurality of arc groove (2), arc groove (2) evenly distributed along disc body (1) circumference, arc groove (2) inlay is equipped with a plurality of groups of fin (3), and fin (3) is fixed in arc groove (2) through bolt, and fin (3) and arc groove (2) between fill heat conduction silica gel layer.

2. The light weight automotive brake disc as claimed in claim 1, wherein: Disc body (1) center is equipped with mounting hole (8), and mounting hole (8) around is provided with a plurality of groups of weight reduction hole (4), and weight reduction hole (4) is arranged in honeycomb, and the both sides of disc body (1) are equipped with first reinforcing rib (5) and second reinforcing rib (6) respectively, and first reinforcing rib (5) and second reinforcing rib (6) all extend along disc body (1) radial, and first reinforcing rib (5) and second reinforcing rib (6) between through connecting plate (7) welding fixed.

3. The light weight automotive brake disc as claimed in claim 1 wherein: Disc body (1) is made of aluminium alloy base material, and the surface of aluminium alloy base material is treated by anodic oxidation, and the thickness of anodic oxidation layer is 20-30 microns, and the surface of anodic oxidation layer is coated with graphene coating, and the thickness of graphene coating is 5-10 microns.

4. The light weight automotive brake disc of claim 1, wherein: Fin (3) is made of copper-aluminum alloy composite material, and the copper content of copper-aluminum alloy composite material is 30%-40%, and the aluminum content is 60%-70%, and the surface of fin (3) is provided with a plurality of convex parts, and the convex parts are evenly distributed along the length direction of fin (3), and the height of convex part is 2-3 mm, and the convex part is integrally formed with fin (3).

5. The light weight automotive brake disc as claimed in claim 1, wherein: The bottom of arc groove (2) is provided with a plurality of flow guide holes, and the flow guide holes penetrate through the both sides of disc body (1), and the diameter of flow guide hole is 3-5 mm, and the flow guide holes are evenly distributed along the length direction of arc groove (2), and the spacing between adjacent flow guide holes is 8-10 mm.

6. The light weight automotive brake disc of claim 1, wherein: The number of weight reduction hole (4) is 12-16, the diameter of weight reduction hole (4) is 10-15 mm, the center distance of weight reduction hole (4) is 20-25 mm, the inner wall of weight reduction hole (4) is sprayed with tungsten carbide coating, the thickness of tungsten carbide coating is 0.1-0.2 mm, and the surface roughness of tungsten carbide coating is Ra0.8-Ra1.

6.

7. The light weight automotive brake disc as claimed in claim 1, wherein: The cross-sectional shape of first reinforcing rib (5) and second reinforcing rib (6) is trapezoidal, and the included angle between adjacent reinforcing ribs is 90°.

8. The light weight automotive brake disc of claim 1, wherein: The outer edge of disc body (1) is provided with annular groove (9), and the width of annular groove (9) is 10-15 mm, and the depth is 3-5 mm, and annular groove (9) is inlaid with sealing ring (10), and the material of sealing ring (10) is fluorine rubber, and the cross-sectional diameter of sealing ring (10) is 5-8 mm.

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