Heat dissipation brake disc

Abstract

The heat dissipation brake disc comprises an inner disc and an outer disc, the inner disc comprises a first body, a central shaft sleeve and a plurality of first air grooves located in one side of the first body, the first air grooves are distributed in a circumferential array around the axis of the shaft sleeve, the outer sides of the first air grooves extend to the edge of the first body, and connecting arms are formed between the adjacent first air grooves. The surface of the connecting arm is higher than that of the outer disc; the mounting grooves are formed in the surface of the second body and correspond to the first air grooves in number and position, the cooling fins are embedded in the mounting grooves in a one-to-one correspondence mode, the multiple mounting grooves are distributed in a circumferential array mode around the axis of the shaft sleeve, connecting parts are formed between the adjacent mounting grooves, and the outer ends of the connecting arms are connected with the inner ends of the connecting parts. According to the brake disc, the brake component and the heat dissipation component are arranged to be of a split structure, the heat dissipation face is enlarged, meanwhile, the inner disc can generate high-speed disordered airflow through rotation, the heat dissipation wind speed is increased, and meanwhile the brake performance and the heat dissipation performance of the brake disc are guaranteed.

Description

Technical Field

[0001] The utility model relates to a heat dissipation brake disc, which is suitable for the technical field of vehicle braking. Background Art

[0002] The brake disc is a vehicle braking device, which is usually coaxially fixed to the vehicle axle. When braking is required, the brake caliper clamps the disc, forcing it to reduce its speed, thereby achieving the purpose of deceleration or stopping.

[0003] Most of the existing brake discs are made of high-strength materials such as stainless steel and are processed through an integrated molding process, such as the brake disc disclosed in the patent with publication number CN208221434U. Although the processing cost and difficulty of this type of disc are relatively low, the overall stainless steel material leads to poor heat dissipation performance, which easily causes the brake disc to overheat and cause brake failure. In order to ensure the structural strength and heat dissipation performance of the brake disc at the same time, some brake discs in the prior art also adopt a multi-layer structure, such as the brake disc disclosed in the patent with publication number CN111306223A, which is a heat-conducting disc made of high heat dissipation material sandwiched between two left and right steel discs, and the structural strength is ensured by the left and right steel discs to ensure the braking effect; and the heat is conducted through the heat-conducting disc to dissipate heat. Although this type of structure can take into account both braking and heat dissipation, on the one hand, the structure is relatively complex and requires more processing materials, which will not only increase the processing cost, but also increase the weight of the brake disc, and cannot meet the use requirements of lightweight vehicles such as racing bicycles and mountain motorcycles; on the other hand, although a heat transfer plate is added to this type of structure, both sides of the heat transfer plate are covered by the brake steel disc, and the heat dissipation surface in contact with the air is very small, and the heat dissipation effect is extremely limited; and the brake disc itself cannot generate high-speed airflow, and relies entirely on the airflow generated by the vehicle's movement to carry away the heat. When the vehicle is on a downhill section with a slow travel speed but frequent braking, this type of brake disc cannot dissipate heat quickly, and it is difficult to ensure braking and heat dissipation effects. Utility Model Content

[0004] In order to solve the defects of the above-mentioned prior art, the utility model proposes a heat dissipation brake disc.

[0005] The technical solution adopted by the utility model is: a heat dissipation brake disc, comprising an inner disc for installation on a wheel axle, an outer disc coaxially installed with the inner disc, the inner disc comprising a first body, a sleeve located at the center of the first body, a plurality of first wind slots located on one side of the first body and distributed on the periphery of the sleeve for interfering with the airflow, the plurality of first wind slots are of the same shape and size, and the plurality of first wind slots are arranged in a circular array around the axis of the sleeve, the outer side of the first wind slots extends to the edge of the first body, and the convex parts of the first body located between each two adjacent first wind slots form an inner end and The connecting arm is connected to the sleeve, the outer end of the connecting arm extends to the edge of the inner disk and is connected to the inner side of the outer disk, and the height of the connecting arm surface is higher than the height of the outer disk surface; the outer disk includes a second body, a mounting groove opened on the inner side of the second body surface and the number of which is the same as the number of the first wind slots, and a heat sink embedded in the mounting groove in a one-to-one correspondence, and a plurality of mounting grooves are arranged in a circular array around the axis of the sleeve, and the positions of the mounting grooves correspond to the positions of the first wind slots in a one-to-one correspondence, and the parts of the second body located between every two adjacent mounting grooves constitute a connecting part, and the outer end of the connecting arm is connected to the inner end of the connecting part. By setting the brake disc as a combination of an inner disc and an outer disc, the brake disc structure can be simplified and easy to process, and the second body and the heat sink in the outer disc are split structures, which is convenient for setting the two to different materials, taking into account both structural strength and heat dissipation performance. When the brake disc is used for braking, the brake caliper is clamped on the outer part of the second body of the outer disc, and the heat generated by friction is quickly transferred to the heat sink, and the heat sink is embedded in the mounting groove, so that a large area of ​​contact with the air can be achieved for heat dissipation; further, a first wind slot is opened on the side of the first body of the inner disc, so that a height difference is formed between it and the connecting arm, so that the inner disc as a whole constitutes a structure similar to a wind wheel. When the inner disc rotates, it disturbs the air in the surrounding environment and generates high-speed turbulent airflow. The position of the heat sink corresponds to the position of the first wind slot, which makes the air flow rate around the heat sink faster, achieving the effect of rapid heat dissipation, and realizing the high structural strength and high heat dissipation performance of the heat dissipating brake disc.

[0006] Furthermore, the inner disc also includes a wind tunnel opened on the bottom surface of the first wind slot and penetrating the first body. The two sides of the inner disc are connected through the wind tunnel, so that the airflow generated by the moving vehicle can generate convection due to the stirring of the inner disc when flowing through the two sides of the inner disc, thereby increasing the airflow turbulence and gas flow rate at the brake disc, thereby improving the heat dissipation performance.

[0007] Furthermore, the other side of the first body has a second wind groove formed by being recessed toward one side thereof for interfering with the airflow. The number and position of the second wind grooves correspond to those of the first wind grooves, and the wind tunnels are located one-to-one in the second wind grooves. The second wind grooves can make the other side of the first body also constitute a wind wheel structure, thereby increasing the air turbulence on the other side of the first body, thereby achieving the effect of further improving the heat dissipation performance.

[0008] Furthermore, the bottom surface of the first wind slot has a ridge formed by the depression of the second wind slot, which can enhance the disturbance of the air and make it easier to generate turbulence, and on the other hand, facilitate demoulding after processing is completed, thereby reducing the difficulty of processing.

[0009] Furthermore, each second air slot is inclined from its inner side to its outer side toward the rotation direction of the wheel axle, so as to cut into the normal airflow generated by the vehicle moving, thereby generating air turbulence.

[0010] Furthermore, each connecting arm is inclined from its inner end to its outer end toward the rotation direction of the wheel axle, and can cut into and intercept the oncoming normal airflow during rotation, thereby facilitating the generation of air turbulence.

[0011] Furthermore, a protrusion for supporting the heat sink is provided on the inner wall of each mounting groove, and a fixing portion is provided at the outer end of each connecting arm. The edge of the fixing portion extends to the top of the mounting groove and clamps the heat sink between the protrusion and the fixing portion. The fixing portion cooperates with the protrusion to clamp the heat sink, thereby achieving installation and fixation of the heat sink. The fixing portion is provided on the connecting arm, and the heat sink can be removed smoothly after the inner disk is removed, which facilitates disassembly and assembly.

[0012] Furthermore, the second body has a heat dissipation portion located on the inner side, a brake portion formed integrally with the heat dissipation portion and located on the outer side of the heat dissipation portion, a mounting groove is provided on the heat dissipation portion, and a plurality of heat dissipation holes penetrating the second body are provided on the surface of the brake portion. During the braking process, the brake caliper is clamped on the brake portion, and the heat dissipation holes can not only reduce the contact surface between the caliper and the brake portion, reduce heat conduction, but also strengthen the friction between the heat dissipation portion and the caliper, thereby improving the braking effect.

[0013] Furthermore, warning grooves for spraying fluorescent paint are provided on the surface of the brake part around the heat dissipation holes and on the surface of the heat dissipation part, so as to produce a warning effect during night riding and improve safety.

[0014] Furthermore, the first body and the second body are made of stainless steel, and the heat sink is made of aluminum alloy. The stainless steel first body and the second body ensure the structural strength of the brake disc and ensure the braking effect; the aluminum alloy heat sink improves the thermal conductivity and ensures the heat dissipation effect.

[0015] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0016] The heat dissipation brake disc in the utility model has a simple structure and is easy to process. On the one hand, by arranging the first body and the heat sink of the outer disc into a separate structure, it is convenient to set the two as different materials, taking into account the structural strength and heat dissipation performance of the brake disc, and by embedding the heat sink in the installation groove, the contact area between the heat sink and the air is increased, thereby improving the heat dissipation effect; on the other hand, the inner disc is formed into a wind wheel structure through the first wind groove and the connecting arm of the inner disc, so that the air in the environment is disturbed when the inner disc rotates, generating a large amount of high-speed turbulent airflow, and the position of the first wind groove corresponds to the heat sink, thereby greatly improving the air flow rate around the heat sink, so as to quickly take away the heat of the heat sink, thereby ensuring the braking performance and heat dissipation performance of the brake disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model Figure 1 ;

[0019] Figure 2 yes Figure 1 The structure of the embodiment shown is schematically shown Figure 2 ;

[0020] Figure 3 yes Figure 1 A schematic diagram of the structure of the inner disk in the illustrated embodiment;

[0021] Figure 4 yes Figure 1 A schematic structural diagram of the second body in the illustrated embodiment;

[0022] Figure 5 yes Figure 4 An enlarged view of the structure of region A in the embodiment shown;

[0023] The following are the descriptions of the reference numerals:

[0024] 1. Inner plate; 11. First body; 12. Bushing; 13. First air slot; 14. Connecting arm; 141. Fixing part; 15. Wind tunnel; 16. Second air slot; 2. Outer plate; 21. Second body; 211. Heat dissipation part; 212. Braking part; 213. Heat dissipation hole; 214. Warning slot; 22. Mounting slot; 221. Protrusion; 23. Heat sink; 24. Connecting part. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of 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.

[0026] In the description of the present invention, it should be noted that the terms "inside" and "outside" in the description of the direction are defined according to the installation direction of the heat dissipation brake disc. Specifically, when the heat dissipation brake disc is normally installed, the direction toward the wheel axle is "inside", and the opposite direction is "outside". The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] Reference Figure 1-5The heat dissipation brake disc in this embodiment includes an inner disc 1 for installation on the wheel axle, and an outer disc 2 coaxially installed with the inner disc 1. The inner disc 1 includes a first body 11, a sleeve 12 located at the center of the first body 11, and a plurality of first air slots 13 for interfering with the airflow, which are located on one side of the first body 11 and distributed on the periphery of the sleeve 12. The shapes and sizes of the plurality of first air slots 13 are the same, and the plurality of first air slots 13 are arranged in a circular array around the axis of the sleeve 12. The outer sides of the first air slots 13 extend to the edge of the first body 11, and the convex parts of the first body 11 located between each two adjacent first air slots 13 form a connecting arm whose inner end is connected to the sleeve 12. 14, the outer end of the connecting arm 14 extends to the edge of the inner disk 1 and is connected to the inner side of the outer disk 2, and the height of the surface of the connecting arm 14 is higher than the height of the surface of the outer disk 2; the outer disk 2 includes a second body 21, a mounting groove 22 opened on the inner side of the surface of the second body 21 and the number of which is the same as the number of the first air slots 13, and a heat sink 23 embedded in the mounting groove 22 in a one-to-one correspondence, a plurality of mounting grooves 22 are arranged in a circular array around the axis of the sleeve 12, and the positions of the mounting grooves 22 correspond to the positions of the first air slots 13 in a one-to-one correspondence, and the portion of the second body 21 located between every two adjacent mounting grooves 22 constitutes a connecting portion 24, and the outer end of the connecting arm 14 is connected to the inner end of the connecting portion 24. By setting the brake disc as a combination of the inner disk 1 and the outer disk 2, the structure of the brake disc can be simplified and easy to process, and the second body 21 and the heat sink 23 in the outer disk 2 are split structures, which is convenient for setting the two to different materials, taking into account both structural strength and heat dissipation performance. When the brake disc is used for braking, the brake caliper is clamped on the outer part of the second body 21 of the outer disc, and the heat generated by friction is quickly transferred to the heat sink 23, and the heat sink 23 is embedded in the mounting groove 22, so that it can be in contact with the air over a large area to dissipate heat; further, a first wind groove 13 is opened on the side of the first body 11 of the inner disc, so that a height difference is formed between it and the connecting arm 14, so that the inner disc 1 as a whole constitutes a structure similar to a wind wheel. When the inner disc 1 rotates, it will disturb the air in the surrounding environment and generate high-speed turbulent airflow. The position of the heat sink 23 corresponds to the position of the first wind groove 13, which makes the air flow rate around the heat sink 23 faster, achieving the effect of rapid heat dissipation, and realizing the high structural strength and high heat dissipation performance of the heat dissipating brake disc.

[0028] In a more preferred embodiment, the inner disc 1 also includes a wind tunnel 15 opened on the bottom surface of the first wind groove 13 (the bottom surface here refers to the surface of the first wind groove that is roughly perpendicular to the axis of the inner disc) and penetrating the first body 11. The wind tunnel 15 connects the two sides of the inner disc 1, so that the airflow generated by the moving vehicle can generate convection due to the stirring of the inner disc 1 when flowing through the two sides of the inner disc 1, thereby increasing the degree of airflow turbulence and gas flow rate at the brake disc, thereby improving the heat dissipation performance.

[0029] In a more preferred embodiment, the other side of the first body 11 has a second wind groove 16 that is recessed toward one side thereof and is used to interfere with the airflow. The number and position of the second wind grooves 16 correspond to the first wind grooves 13, and the wind tunnels 15 are located one-to-one in the second wind grooves 16. The second wind grooves 16 can make the other side of the first body 11 also constitute a wind wheel structure, increase the air turbulence on the other side of the first body 11, and achieve the effect of further improving the heat dissipation performance.

[0030] In a more preferred embodiment, the bottom surface of the first wind groove 13 has a ridge formed by the depression of the second wind groove 16, which can enhance the disturbance of the air and make it easier to generate turbulence. On the other hand, it is easy to demold after processing and reduce the difficulty of processing.

[0031] In a more preferred embodiment, each second air slot 16 is inclined from the inside to the outside toward the rotation direction of the wheel axle, so as to cut into the normal airflow generated by the vehicle moving, thereby generating air turbulence.

[0032] In a more preferred embodiment, each connecting arm 14 is inclined from its inner end to its outer end toward the rotation direction of the wheel axle, so that it can cut into and intercept the oncoming normal airflow during rotation, thereby facilitating the generation of air turbulence.

[0033] In a more preferred embodiment, a protrusion 221 for supporting the heat sink 23 is provided on the inner wall of each mounting groove 22, and a fixing portion 141 is provided at the outer end of each connecting arm 14. The edge of the fixing portion 141 extends to the top of the mounting groove 22 and clamps the heat sink 23 between the protrusion 221 and the fixing portion 141. The fixing portion 141 cooperates with the protrusion 221 to clamp the heat sink 23, thereby achieving installation and fixation of the heat sink 23. The fixing portion 141 is provided on the connecting arm 14. After removing the inner disk 1, the heat sink 23 can be removed smoothly, which is convenient for disassembly and assembly.

[0034] In a more preferred embodiment, the second body 21 has a heat dissipation portion 211 located on the inner side, a braking portion 212 which is integrally formed with the heat dissipation portion 211 and located on the outer side of the heat dissipation portion 211, a mounting groove 22 is provided on the heat dissipation portion 211, and a plurality of heat dissipation holes 213 penetrating the second body 21 are provided on the surface of the braking portion 212. During braking, the brake caliper is clamped on the braking portion 212, and the heat dissipation holes 213 can not only reduce the contact area between the caliper and the braking portion 212 and reduce heat conduction, but also strengthen the friction between the heat dissipation portion 211 and the caliper, thereby improving the braking effect.

[0035] In a more preferred embodiment, warning grooves 214 for spraying fluorescent paint are provided on the surface of the brake part 212 around the heat dissipation holes 213 and on the surface of the heat dissipation part 211, so as to produce a warning effect during night riding and improve safety.

[0036] In a more preferred embodiment, the first body 11 and the second body 21 are made of stainless steel, and the heat sink 23 is made of aluminum alloy. The stainless steel first body 11 and the second body 21 ensure the structural strength of the brake disc and ensure the braking effect; the aluminum alloy heat sink 23 improves the thermal conductivity and ensures the heat dissipation effect.

[0037] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0038] The heat dissipation brake disc in the utility model has a simple structure and is easy to process. On the one hand, by arranging the first body and the heat sink of the outer disc into a separate structure, it is convenient to set the two as different materials, taking into account the structural strength and heat dissipation performance of the brake disc, and by embedding the heat sink in the installation groove, the contact area between the heat sink and the air is increased, thereby improving the heat dissipation effect; on the other hand, the inner disc is formed into a wind wheel structure through the first wind groove and the connecting arm of the inner disc, so that the air in the environment is disturbed when the inner disc rotates, generating a large amount of high-speed turbulent airflow, and the position of the first wind groove corresponds to the heat sink, thereby greatly improving the air flow rate around the heat sink, so as to quickly take away the heat of the heat sink, thereby ensuring the braking performance and heat dissipation performance of the brake disc.

[0039] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A heat dissipating brake disc, comprising an inner disc (1) for mounting on a wheel axle, and an outer disc (2) mounted coaxially with the inner disc (1), characterized in that: The inner disk (1) comprises a first body (11), a sleeve (12) located at the center of the first body (11), and a plurality of first wind slots (13) located on one side of the first body (11) and distributed on the periphery of the sleeve (12) for interfering with airflow, wherein the plurality of first wind slots (13) have the same shape and size, and are arranged in a circular array around the axis of the sleeve (12), the outer sides of the first wind slots (13) extend to the edge of the first body (11), and the convex parts of the first body (11) located between every two adjacent first wind slots (13) form connecting arms (14) whose inner ends are connected to the sleeve (12), the outer ends of the connecting arms (14) extend to the edge of the inner disk (1) and are connected to the inner side of the outer disk (2), and the height of the surface of the connecting arms (14) is higher than the height of the surface of the outer disk (2); The outer disk (2) comprises a second body (21), mounting grooves (22) which are opened on the inner side of the surface of the second body (21) and whose number is the same as that of the first air grooves (13), and heat sinks (23) which are embedded in the mounting grooves (22) in a one-to-one correspondence, wherein a plurality of the mounting grooves (22) are arranged in a circular array around the axis of the shaft sleeve (12), and the positions of the mounting grooves (22) correspond to the positions of the first air grooves (13) in a one-to-one correspondence, and the portions of the second body (21) located between every two adjacent mounting grooves (22) constitute a connecting portion (24), and the outer end of the connecting arm (14) is connected to the inner end of the connecting portion (24).

2. The heat dissipating brake disc according to claim 1, characterized in that: The inner disk (1) further comprises a wind tunnel (15) which is opened on the bottom surface of the first wind slot (13) and passes through the first body (11).

3. The heat dissipating brake disc according to claim 2, characterized in that: The other side surface of the first body (11) has a second wind slot (16) formed by being recessed toward the one side surface thereof and used for interfering with the airflow; the number and position of the second wind slots (16) correspond to those of the first wind slots (13); and the wind tunnels (15) are located in the second wind slots (16) in a one-to-one correspondence.

4. The heat dissipating brake disc according to claim 3, characterized in that: The bottom surface of the first air groove (13) has a bulge formed by the depression of the second air groove (16).

5. The heat dissipating brake disc according to claim 3, characterized in that: Each of the second air slots (16) is inclined from its inner side to its outer side towards the rotation direction of the wheel axle.

6. The heat dissipating brake disc according to claim 1, characterized in that: Each of the connecting arms (14) is inclined from its inner end to its outer end towards the rotation direction of the wheel axle.

7. The heat dissipating brake disc according to claim 1, characterized in that: A protrusion (221) for supporting the heat sink (23) is provided on the inner wall of each mounting groove (22), and a fixing portion (141) is provided on the outer end of each connecting arm (14), wherein the edge of the fixing portion (141) extends above the mounting groove (22) and clamps the heat sink (23) between the protrusion (221) and the fixing portion (141).

8. The heat dissipating brake disc according to claim 1, characterized in that: The second body (21) comprises a heat dissipation portion (211) located on the inner side, and a braking portion (212) formed integrally with the heat dissipation portion (211) and located on the outer side of the heat dissipation portion (211); the mounting groove (22) is provided on the heat dissipation portion (211); and a plurality of heat dissipation holes (213) penetrating the second body (21) are provided on the surface of the braking portion (212).

9. The heat dissipating brake disc according to claim 8, characterized in that: Warning grooves (214) for spraying fluorescent paint are provided on the surface of the braking portion (212) at a location around the heat dissipation hole (213) and on the surface of the heat dissipation portion (211).

10. The heat dissipating brake disc according to claim 1, characterized in that: The first body (11) and the second body (21) are made of stainless steel, and the heat sink (23) is made of aluminum alloy.

Images