Heat-crack-resistant casting reinforcing rib structure of automobile brake disc

Abstract

The utility model discloses a heat crack resistant casting reinforcing rib structure of an automobile brake disc, which is arranged on an inner side friction plate close to a wheel and positioned in a space between an outer side friction plate and the inner side friction plate, and comprises a plurality of radial reinforcing ribs, an outer ring reinforcing rib and an inner ring reinforcing rib, each radial reinforcing rib is arranged in an S shape, the outer ring reinforcing ribs are annularly arranged on the outer ring of the inner side friction plate in the circumferential direction of the inner side friction plate, and the inner ring reinforcing ribs are annularly arranged on the inner ring of the inner side friction plate in the circumferential direction of the inner side friction plate. According to the brake disc, the radial reinforcing ribs, the outer ring reinforcing ribs and the inner ring reinforcing ribs are matched with one another to form a complete reinforcing structure system and act together in different directions, so that the brake disc can bear complex stress conditions, the overall mechanical property is improved, and the brake disc better meets the requirements under various brake conditions; and safe and reliable operation of an automobile brake system is ensured.

Description

A heat-crack resistant casting reinforcing rib structure for automotive brake discs Technical Field

[0001] This utility model belongs to the field of automotive parts technology, specifically relating to a heat-resistant casting reinforcing rib structure for automotive brake discs. Background Technology

[0002] Brake discs are a key component of automotive braking systems. Brake pads, clamped between calipers and brake discs, create friction between the contact surfaces, thus braking the vehicle and slowing it down or bringing it to a stop. In actual use, when a vehicle brakes, the surface of the brake disc rubs intensely against the brake pads, generating a large amount of heat and causing the surface temperature to rise rapidly. However, the interior of the brake disc experiences a slower temperature rise due to heat conduction, resulting in a significant temperature difference between the surface and interior. According to the principle of thermal expansion and contraction, the surface expands due to its higher temperature, while the interior expands less due to its lower temperature. This uneven expansion creates enormous thermal stress within the brake disc. When this thermal stress exceeds the strength limit of the brake disc material, cracks can easily form at stress concentration points, such as the edges of the brake disc or around cooling vents. Summary of the Invention

[0003] The purpose of this invention is to provide a heat-crack resistant casting reinforcing rib structure for automotive brake discs, in order to solve the defects mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides a heat-crack resistant cast reinforcing rib structure for automotive brake discs. The automotive brake disc includes a disc-shaped outer friction pad, a disc-shaped inner friction pad, and a fixing seat disposed between the outer and inner friction pads and fixing them together as a single unit. A mounting seat is fixedly disposed in the center of the inner friction pad, and the mounting seat has multiple sets of threaded holes evenly distributed on it. The automotive brake disc is fixedly mounted on the automotive wheel via the mounting seat and the threaded holes. The heat-crack resistant cast reinforcing rib structure of the automotive brake disc... The automotive brake disc heat-crack resistant casting reinforcing rib structure is configured on the inner friction pad near the wheel and in the space between the outer and inner friction pads. It includes radial reinforcing ribs, outer ring reinforcing ribs, and inner ring reinforcing ribs. Multiple radial reinforcing ribs are radially distributed along the radial direction of the inner friction pad, and each radial reinforcing rib is arranged in an "S" shape. The outer ring reinforcing ribs are arranged in a ring around the outer ring of the inner friction pad along the circumferential direction. The inner ring reinforcing ribs are arranged in a ring around the inner ring of the inner friction pad along the circumferential direction.

[0005] Furthermore, in the above-mentioned heat-crack resistant casting reinforcing rib structure of the automobile brake disc, each radial reinforcing rib has two grooves on the bottom surface near the inner friction pad, including a first groove located on the outer ring of the inner friction pad and a second groove located on the inner ring of the inner friction pad. The outer ring reinforcing rib is inserted into the first groove of each radial reinforcing rib, and the inner ring reinforcing rib is inserted into the second groove of each radial reinforcing rib.

[0006] Furthermore, in the aforementioned heat-crack resistant casting reinforcing rib structure of the automotive brake disc, multiple heat dissipation holes are provided on the outer friction plate and the inner friction plate, and the heat dissipation holes on the inner friction plate are all located between adjacent radial reinforcing ribs.

[0007] By implementing the heat-crack resistant casting reinforcing rib structure of the automotive brake disc of this utility model, the radial reinforcing ribs, outer ring reinforcing ribs, and inner ring reinforcing ribs work together to form a complete reinforcing structure system. These ribs act in conjunction in different directions, enabling the brake disc to withstand complex stress conditions, improving its overall mechanical performance, better adapting to the requirements of various braking conditions, and ensuring the safe and reliable operation of the automotive braking system. Compared with the prior art, the heat-crack resistant casting reinforcing rib structure of the automotive brake disc of this utility model has the following advantages and beneficial effects:

[0008] (1) By setting “S”-shaped radial reinforcing ribs in a radial distribution along the inner friction pad, the structural strength and toughness of the brake disc are greatly improved. Compared with straight reinforcing ribs, the “S”-shaped structure can better absorb and disperse stress when subjected to external force, effectively resist the impact and shear force generated during braking, and reduce the risk of deformation, cracking or even breakage of the brake disc due to stress. Especially at the position of heat dissipation holes on the brake disc, it can avoid thermal cracks at stress concentration points when thermal stress exceeds the strength limit of the brake disc material, thereby significantly extending the service life of the brake disc.

[0009] (2) By setting “S”-shaped radial reinforcing ribs in a radial distribution along the inner friction pad, the heat dissipation area of ​​the brake disc can be increased. During braking, heat can be quickly conducted to the edge of the brake disc through these reinforcing ribs and then dissipated into the surrounding air. At the same time, the radial distribution makes the heat conduction on the brake disc more uniform, avoids local overheating, helps maintain the stability of braking performance, and prevents the braking effect from being affected by heat fade.

[0010] (3) By setting an outer ring reinforcing rib along the circumference of the inner friction pad, the structural strength of the brake disc edge can be enhanced, preventing the brake disc edge from curling, deforming or aggravating wear due to large centrifugal force and friction during braking. This helps to maintain the overall shape of the brake disc, ensure the effective contact area between the brake pad and the brake disc during braking, and improve braking efficiency.

[0011] (4) By setting inner ring reinforcing ribs in the inner ring of the inner friction pad along the circumferential direction of the inner friction pad, the central area of ​​the brake disc is strengthened. When braking, the central part of the brake disc bears a large pressure and torque. The inner ring reinforcing ribs can improve the rigidity and strength of the central area, prevent excessive local deformation or cracks, and ensure the structural integrity and performance stability of the brake disc throughout the entire use process. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for further understanding of the embodiments of this utility model and constitute a part of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0013] Figure 1 is a three-dimensional structural diagram of an automobile brake disc;

[0014] Figure 2 is a three-dimensional structural diagram of an automobile brake disc from another angle, showing the location of the heat-crack-resistant casting reinforcing rib structure of the automobile brake disc of this utility model.

[0015] Figure 3 is a schematic diagram of the heat-resistant crack-resistant casting reinforcing rib structure of the automobile brake disc of this utility model;

[0016] Figure 4 is a cross-sectional view of Figure 3;

[0017] Figure 5 is another cross-sectional view of Figure 3.

[0018] Explanation of reference numerals in the attached figures:

[0019] 11. Outer friction pad; 12. Mounting seat; 13. Inner friction pad; 14. Heat dissipation hole; 15. Mounting seat; 16. Threaded hole; 2. Heat-resistant crack-resistant cast reinforcing rib structure of automobile brake disc; 21. Radial reinforcing rib; 211. First groove; 212. Second groove; 22. Outer ring reinforcing rib; 23. Inner ring reinforcing rib. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] Please refer to Figures 1-5. The automotive brake disc includes a disc-shaped outer friction pad 11, a disc-shaped inner friction pad 13, and a mounting base 12 disposed between the outer friction pad 11 and the inner friction pad 13 and fixing the outer friction pad 11 and the inner friction pad 13 together. Multiple heat dissipation holes 14 are provided on the outer friction pad 11 and the inner friction pad 13. A mounting base 15 is fixedly disposed in the middle of the inner friction pad 13. Multiple sets of screw holes 16 are evenly provided on the mounting base 15. The automotive brake disc is fixedly installed on the automotive wheel through the mounting base 15 and the screw holes 16. The heat-resistant crack-resistant casting reinforcing rib structure 2 of the automobile brake disc provided by this utility model is disposed on the inner friction plate 13 near the wheel and in the space between the outer friction plate 11 and the inner friction plate 13. The heat-resistant crack-resistant casting reinforcing rib structure 2 of the automobile brake disc includes radial reinforcing ribs 21, outer ring reinforcing ribs 22, and inner ring reinforcing ribs 23. Multiple radial reinforcing ribs 21 are radially distributed along the radial direction of the inner friction plate 13, and each radial reinforcing rib 21 is arranged in an "S" shape. The outer ring reinforcing ribs 22 are arranged in a ring around the outer ring of the inner friction plate 13 along the circumferential direction. The inner ring reinforcing ribs 23 are arranged in a ring around the inner ring of the inner friction plate 13 along the circumferential direction.

[0022] In a preferred embodiment, each radial reinforcing rib 21 has two grooves on its bottom surface near the inner friction plate 13, including a first groove 211 located on the outer ring of the inner friction plate 13 and a second groove 212 located on the inner ring of the inner friction plate 13. The outer ring reinforcing rib 22 is inserted into the first groove 211 of each radial reinforcing rib 21, and the inner ring reinforcing rib 23 is inserted into the second groove 212 of each radial reinforcing rib 21.

[0023] In a preferred embodiment, the heat dissipation holes 14 on the inner friction plate 13 are all located between adjacent radial reinforcing ribs 21.

[0024] In the heat-crack resistant casting reinforcing rib structure of the automobile brake disc of this utility model, "S"-shaped radial reinforcing ribs 21 are arranged radially along the inner friction pad 13. Without adding too much weight, the structural strength and toughness of the brake disc are greatly improved. Compared with straight reinforcing ribs, the "S"-shaped structure can better absorb and disperse stress when subjected to external force, effectively resist the impact and shear force generated during braking, and reduce the risk of deformation, cracking or even breakage of the brake disc due to stress. Especially at the position of heat dissipation holes 14 on the brake disc, it can prevent thermal cracks from occurring at the stress concentration point when the thermal stress exceeds the strength limit of the brake disc material, thereby significantly extending the service life of the brake disc.

[0025] In the heat-resistant casting reinforcing rib structure of the automobile brake disc of this utility model, the radial reinforcing ribs 21 of the shape of “S” are arranged radially along the inner friction pad 13 to increase the heat dissipation area of ​​the brake disc. During braking, heat can be quickly conducted to the edge of the brake disc through these reinforcing ribs and then dissipated into the surrounding air. At the same time, the radial distribution makes the heat conduction on the brake disc more uniform, avoids local overheating, helps maintain the stability of braking performance, and prevents the braking effect from being affected by heat fade.

[0026] In the heat-crack-resistant casting reinforcing rib structure of the automotive brake disc of this utility model, by setting an outer ring reinforcing rib 22 in the outer ring of the inner friction pad 13 along the circumferential direction of the inner friction pad 13, the structural strength of the brake disc edge can be enhanced, preventing the brake disc edge from curling, deforming or aggravating wear due to large centrifugal force and friction during braking. This helps to maintain the overall shape of the brake disc, ensure the effective contact area between the brake pad and the brake disc during braking, and improve braking efficiency.

[0027] In the heat-crack resistant casting reinforcing rib structure of the automobile brake disc of this utility model, an inner ring reinforcing rib 23 is arranged in a ring along the circumferential direction of the inner friction pad 13 to strengthen the central area of ​​the brake disc. When braking, the central part of the brake disc bears a large pressure and torque. The inner ring reinforcing rib 23 can improve the rigidity and strength of the central area, prevent excessive local deformation or cracks, and ensure the structural integrity and performance stability of the brake disc throughout the entire service process.

[0028] By implementing the heat-crack resistant casting reinforcing rib structure of the automobile brake disc of this utility model, the radial reinforcing rib 21, the outer ring reinforcing rib 22, and the inner ring reinforcing rib 23 cooperate with each other to form a complete reinforcing structure system. They work together in different directions, enabling the brake disc to withstand complex stress conditions, improving the overall mechanical performance, better adapting to the requirements of various braking conditions, and ensuring the safe and reliable operation of the automobile braking system.

[0029] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely 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. At the same time, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement state shown in the accompanying drawings.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heat-crack resistant casting reinforcing rib structure for an automotive brake disc, the automotive brake disc comprising a disc-shaped outer friction pad, a disc-shaped inner friction pad, a fixing seat disposed between the outer friction pad and the inner friction pad and fixing the outer friction pad and the inner friction pad together, a mounting seat fixedly disposed in the middle of the inner friction pad, the mounting seat having multiple sets of screw holes evenly formed thereon, the automotive brake disc being fixedly mounted on the automotive wheel via the mounting seat and the screw holes, characterized in that... The heat-resistant crack-resistant cast reinforcing rib structure of the automotive brake disc is disposed on the inner friction pad near the wheel and in the space between the outer friction pad and the inner friction pad. The heat-resistant crack-resistant cast reinforcing rib structure of the automotive brake disc includes radial reinforcing ribs, outer ring reinforcing ribs, and inner ring reinforcing ribs. Multiple radial reinforcing ribs are radially distributed along the radial direction of the inner friction pad, and each radial reinforcing rib is arranged in an "S" shape. The outer ring reinforcing ribs are arranged in a ring around the outer ring of the inner friction pad along the circumferential direction of the inner friction pad, and the inner ring reinforcing ribs are arranged in a ring around the inner ring of the inner friction pad along the circumferential direction of the inner friction pad.

2. The heat check resistant cast rib structure for automobile brake disc according to claim 1, wherein Each of the radial reinforcing ribs has two grooves on its bottom surface near the inner friction pad, including a first groove on the outer ring of the inner friction pad and a second groove on the inner ring of the inner friction pad. The outer ring reinforcing rib is inserted into the first groove of each of the radial reinforcing ribs, and the inner ring reinforcing rib is inserted into the second groove of each of the radial reinforcing ribs.

3. The heat check resistant cast rib structure for an automobile brake disc according to claim 2, characterized by, Multiple heat dissipation holes are provided on the outer friction plate and the inner friction plate. The heat dissipation holes on the inner friction plate are all located between adjacent radial reinforcing ribs.

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