Brake disc easy to machine and high in heat dissipation performance

Abstract

A brake disc easy to machine and high in heat dissipation performance is formed by combining a brake disc outer ring and a brake disc inner ring. The brake disc inner ring is provided with a first side face and a second side face, a plurality of first heat dissipation grooves are machined and formed in the first side face in the first direction, and a plurality of second heat dissipation grooves are machined and formed in the second side face in the second direction. The first direction and the second direction are distributed in a non-parallel manner, so that the first heat dissipation grooves and the second heat dissipation grooves are staggered to form a plurality of inner ring heat dissipation through holes; the inner ring heat dissipation through holes penetrate from the first side face to the second side face of the brake disc inner ring. According to the brake disc, the slotting machining mode replaces the punching machining mode, the first heat dissipation grooves and the second heat dissipation grooves are formed, and the multiple inner ring heat dissipation through holes can be naturally formed in the staggered positions of the first heat dissipation grooves and the second heat dissipation grooves, so that the technology is more simplified, the machining time of a single brake disc can be greatly shortened, and the machining efficiency is improved. And more inner ring heat dissipation through holes can be formed in a faster manner, so that the heat dissipation performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of structural technology of vehicle brake discs, and in particular to a brake disc that is easy to process and has strong heat dissipation performance. Background Technology

[0002] Brake discs, working in conjunction with brake calipers, use friction to resist wheel rotation, thus slowing down or stopping the bicycle. They are a key component ensuring the braking performance of a bicycle. Based on structure, there are solid brake discs and ventilated brake discs. Solid brake discs have a simple structure, lower cost, and a certain degree of strength and wear resistance. Ventilated brake discs have ventilation channels or heat dissipation fins inside the disc body, effectively improving heat dissipation, reducing temperature rise during braking, and minimizing brake fade. They are suitable for high-intensity riding and downhill conditions. When installing brake discs, the wheel must first be removed from the bicycle. Then, select the appropriate tools based on the type of brake disc and the hub mounting method. For 6-bolt brake discs, use a suitable box wrench to tighten the bolts diagonally to ensure the brake disc is securely and evenly installed. For center-lock brake discs, align the disc body with the center hole of the hub, insert the locking ring, and tighten it. After installation, check that the brake disc rotates smoothly without any wobble or wobbling.

[0003] Example 1 of the prior art, referring to patent document CN221170496U, discloses a hollow ventilated brake disc for motorcycles. The key technical points of the solution are: it includes a left disc, a right disc, a heat dissipation disc located between the left and right discs, and multiple rivets for connecting the left disc, the right disc, and the heat dissipation disc together. The left disc, the right disc, and the heat dissipation disc are all provided with corresponding heat dissipation holes and connecting holes for the rivets to pass through. The inner wall and the outer wall of the heat dissipation disc are provided with multiple inner notches and multiple outer notches, which are distributed circumferentially around the center of the heat dissipation disc. The multiple inner notches and multiple outer notches are alternately arranged along the circumferential direction of the heat dissipation disc. Some of the heat dissipation holes of the left and right discs correspond to the multiple inner notches and multiple outer notches, respectively. This solves the problems of slow heat dissipation and structural instability in the prior art. In Technical Example 1, the brake disc has a large number of heat dissipation holes in the area where it contacts the brake pads. These heat dissipation holes are difficult to process and form. Simply put, each heat dissipation hole needs to be drilled separately, which will take up a lot of processing time and result in high processing costs. On the other hand, the outer ring of the brake disc has a large area, so the area in contact with the brake disc is concentrated on the outer ring, while the inner ring uses a large number of hollow structures. This will inevitably lead to a decrease in the strength of the entire brake disc, making it easy to deform and twist under stress, and also easy to cause disc rubbing.

[0004] Existing technology example 2, referring to patent document CN108895097B, provides a combined brake disc and its manufacturing method, belonging to the field of bicycle brake technology. It solves the problem of poor heat dissipation performance of existing stainless steel brake discs. This invention includes a friction part and a mounting part. The inner circumference of the friction part and the outer circumference of the mounting part form an annular groove. At least two connecting parts are provided within this annular groove. The two ends of each connecting part are respectively connected to the inner circumference of the friction part and the outer circumference of the mounting part. The connecting parts are spaced apart circumferentially along the mounting part. Multiple connecting parts divide the annular groove into multiple insert holes, each containing a heat sink made of aluminum alloy. The brake disc structure shown in technology example 2 has the same drawbacks as technology example 1, and its heat dissipation performance and structural strength are even weaker, failing to meet the demands of competitive racing and thus belonging to a low-end product.

[0005] In summary, there is an urgent need for a new type of brake disc to address the aforementioned shortcomings. Summary of the Invention

[0006] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a brake disc that is easy to process and has strong heat dissipation performance.

[0007] The technical solution of this utility model to solve its technical problem is: a brake disc that is easy to process and has strong heat dissipation performance, which is composed of an outer ring of a brake disc and an inner ring of a brake disc;

[0008] The inner ring of the brake disc has a first side and a second side. The first side is formed with a plurality of first heat dissipation grooves along a first direction, and the second side is formed with a plurality of second heat dissipation grooves along a second direction.

[0009] The first direction and the second direction are not parallel, so that the first heat dissipation groove and the second heat dissipation groove intersect each other and form multiple inner ring heat dissipation through holes;

[0010] The aforementioned inner ring heat dissipation through hole extends from the first side of the inner ring of the brake disc to the second side.

[0011] In some optional embodiments of this utility model, the outer ring of the brake disc is detachably connected to the inner ring of the brake disc through multiple floating buckles.

[0012] A preferred embodiment of the structure of the outer ring of the brake disc is that the outer ring of the brake disc is provided with a first outer ring heat dissipation through hole and a second outer ring heat dissipation through hole;

[0013] The first outer ring heat dissipation through holes are distributed inside the second outer ring heat dissipation through holes, and the area of ​​the first outer ring heat dissipation through holes is larger than the area of ​​the second outer ring heat dissipation through holes.

[0014] The first outer ring heat dissipation holes are evenly distributed circumferentially, and the first outer ring heat dissipation holes are perpendicular to the center line of the outer ring of the brake disc.

[0015] The second outer ring heat dissipation holes are evenly distributed circumferentially, and the second outer ring heat dissipation holes are not perpendicular to the center line of the outer ring of the brake disc.

[0016] A preferred embodiment of the inner ring structure of the brake disc is that a positioning hole for mating with a hub is provided at the center of the inner ring of the brake disc, and a plurality of fixing holes are provided on the outer side of the positioning hole.

[0017] Preferably, the inner ring of the brake disc has a plurality of weight-reducing grooves, and the weight-reducing grooves and the floating buckle are distributed parallel to each other in the same direction.

[0018] In some embodiments, the number of weight-reducing grooves is 5, thereby dividing the inner ring of the brake disc into 5 sub-segments, each sub-segment having a plurality of the first heat dissipation grooves and the second heat dissipation grooves.

[0019] Specifically, the number of the first heat dissipation grooves is X, and the number of the second heat dissipation grooves is Y. The X first heat dissipation grooves and the Y second heat dissipation grooves intersect to form M inner ring heat dissipation through holes, and satisfy M = X × Y.

[0020] In some preferred embodiments of this utility model, the inner sides of the first heat dissipation groove and the second heat dissipation groove are both closed ends and the outer sides are both open ends, and the open ends are located at the outer edge of the inner ring of the brake disc.

[0021] The beneficial effects of this utility model are as follows:

[0022] First, the grooving process replaces the drilling process. By opening the first and second heat dissipation grooves, multiple inner ring heat dissipation through holes can be naturally formed at their intersection, thus simplifying the process and greatly shortening the processing time of a single brake disc.

[0023] Second, it can form a larger number of inner ring heat dissipation holes in a faster way, thus improving heat dissipation performance.

[0024] Third, the inner ring heat dissipation through holes play the main heat dissipation function. The first heat dissipation groove and the second heat dissipation groove are directly connected to the heat dissipation through holes (in the existing technology they are independent of each other). Therefore, the first heat dissipation groove and the second heat dissipation groove can play the functions of heat conduction and auxiliary heat dissipation, thereby making the entire brake disc have a stronger heat dissipation effect.

[0025] Fourth, although the inner ring of the brake pad has a large number of heat dissipation holes, the distribution of these holes is very uniform. It also has a large number of uniformly distributed solid structures, so the structure is strong, can withstand greater pressure, is not prone to twisting and deformation, and reduces the chance of disc rubbing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the axial structure of the present invention (first side view).

[0027] Figure 2 This is a schematic diagram of the axial structure of the second side of this utility model.

[0028] Figure 3 This is the front view of the utility model (first side view).

[0029] Figure 4 yes Figure 3 A magnified schematic diagram of a portion of the structure in section A.

[0030] Figure 5 This is the front view of the second side of this utility model.

[0031] Figure 6 yes Figure 5 A magnified schematic diagram of a local structure in section B.

[0032] In the diagram: 1. Brake disc outer ring; 11. First outer ring heat dissipation through hole; 12. Second outer ring heat dissipation through hole; 2. Brake disc inner ring; 21. First side surface; 21a. First direction; 211. First heat dissipation groove; 22. Second side surface; 22a. Second direction; 221. Second heat dissipation groove; 23. Inner ring heat dissipation through hole; 24. Positioning hole; 25. Fixing hole; 26. Weight reduction groove; 261. Sub-section; 27. Closed end; 28. Open end; 3. Floating buckle. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments are merely specific descriptions of the present invention, and their purpose is to enable those skilled in the art to better understand the technical solution of the present invention, and should not be regarded as limitations on the present invention.

[0034] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Example 1

[0037] Reference Figures 1-6 A brake disc that is easy to process and has strong heat dissipation performance is composed of an outer ring 1 and an inner ring 2.

[0038] The key structural feature is that the inner ring 2 of the brake disc has a first side surface 21 and a second side surface 22. The first side surface 21 is formed with a plurality of first heat dissipation grooves 211 along a first direction 21a, and the second side surface 22 is formed with a plurality of second heat dissipation grooves 221 along a second direction 22a. The first direction 21a and the second direction 22a are not parallel, so that the first heat dissipation grooves 211 and the second heat dissipation grooves 221 intersect each other and form a plurality of inner ring heat dissipation through holes 23. The inner ring heat dissipation through holes 23 extend from the first side surface 21 of the inner ring 2 of the brake disc to the second side surface 22.

[0039] The above content is the basic structural solution of this utility model. Compared with the prior art, its features and advantages are at least as follows: First, the slotting processing method replaces the drilling processing method. Through the opening of the first heat dissipation groove 211 and the second heat dissipation groove 221, multiple inner ring heat dissipation through holes 23 can be naturally formed at their intersection, thus simplifying the process and greatly shortening the processing time of a single brake disc; Second, it can form a larger number of inner ring heat dissipation through holes 23 in a faster manner, improving heat dissipation performance; Third, the inner ring heat dissipation through holes 23 play the main heat dissipation function, firstly... The first heat dissipation groove 211 and the second heat dissipation groove 221 are directly connected to the heat dissipation through holes (in the prior art they are independent of each other). Therefore, the first heat dissipation groove 211 and the second heat dissipation groove 221 can play the role of heat conduction and auxiliary heat dissipation, thereby making the entire brake disc have a stronger heat dissipation effect. Fourth, although the inner ring of the brake pad has a large number of inner ring heat dissipation through holes 23, the distribution of the inner ring heat dissipation through holes 23 is very uniform. At the same time, it also has a large number of uniformly distributed solid structures. Therefore, the structure has high strength, can withstand greater pressure, is not easy to be twisted and deformed, and reduces the chance of disc rubbing.

[0040] Reference Figures 3-6Regarding the number of inner ring heat dissipation through holes 23, for example: if the number of first heat dissipation grooves 211 is X and the number of second heat dissipation grooves 221 is Y, then the X first heat dissipation grooves 211 and the Y second heat dissipation grooves 221 interweave to form M inner ring heat dissipation through holes 23, and satisfy M = X × Y. Therefore, the larger X and Y are, the larger the theoretical number M of inner ring heat dissipation through holes 23 that can be formed.

[0041] For a specific example, assuming X = 9 and Y = 9, the machine tool needs to perform 18 (X + Y) machining operations to form a maximum of 81 (X × Y) inner ring heat dissipation through holes 23. In contrast, existing technologies use a drilling method, which requires 18 machining operations to produce only 18 inner ring heat dissipation through holes 23. Therefore, this invention has a significant advantage in processing, with a simpler process and greatly improved efficiency.

[0042] In some optional embodiments of this invention, the outer ring 1 of the brake disc is detachably connected to the inner ring 2 of the brake disc via multiple floating buckles 3, thereby forming a floating brake disc. When braking, the brake disc expands due to high temperatures generated by friction. The floating brake disc can slightly oscillate at an appropriate angle, maintaining the optimal friction surface between the brake disc and the brake pads, thus ensuring braking stability. Therefore, the floating brake disc solves the problem of thermal deformation and has many advantages, including strong anti-vibration capability, excellent heat dissipation, reduced weight, and ease of assembly.

[0043] Example 2

[0044] Based on the structure of Embodiment 1, this embodiment provides a more preferred structural solution, as follows:

[0045] I. Regarding the outer ring of the brake disc 1: Refer to Figures 1-2 The brake disc outer ring 1 has a first outer ring heat dissipation through hole 11 and a second outer ring heat dissipation through hole 12. The first outer ring heat dissipation through hole 11 is distributed inside the second outer ring heat dissipation through hole 12, and the area of ​​the first outer ring heat dissipation through hole 11 is larger than the area of ​​the second outer ring heat dissipation through hole 12. The first outer ring heat dissipation through hole 11 is evenly distributed circumferentially, and the first outer ring heat dissipation through hole 11 is perpendicular to the center line of the brake disc outer ring 1. The second outer ring heat dissipation through hole 12 is evenly distributed circumferentially, and the second outer ring heat dissipation through hole 12 is not perpendicular to the center line of the brake disc outer ring 1.

[0046] The brake pad outer ring with the above structure provides good heat dissipation performance through the first outer ring heat dissipation through hole 11 and the second outer ring heat dissipation through hole 12 when the brake pad is in frictional contact with the brake disc outer ring 1, so that the brake pad outer ring can be kept at a low operating temperature as much as possible, thereby providing a stable and reliable braking effect.

[0047] II. Supplementary structure regarding the inner ring 2 of the brake disc: Refer to Figures 1-2 The inner ring 2 of the brake disc has a positioning hole 24 at its center for mating with the hub, and several fixing holes 25 are provided on the outer side of the positioning hole 24. The positioning hole 24 and fixing holes 25 enable the inner ring 2 of the brake disc to be positioned and fixedly connected with the hub and the fork tube of the frame.

[0048] Preferably, the inner ring 2 of the brake disc has a plurality of weight-reducing grooves 26. The weight-reducing grooves 26 serve two purposes: first, they reduce the overall weight of the brake disc, achieving a lightweight design and thus improving the vehicle's handling performance; second, they assist in heat dissipation, allowing heat generated by friction to dissipate more quickly. It is worth noting that the weight-reducing grooves 26 and the floating buckle 3 are distributed parallel to each other in the same direction, resulting in a more rational spatial distribution and giving the inner ring 2 of the brake disc a larger effective frictional contact area with the brake pads.

[0049] For example, the number of weight-reducing grooves 26 is 5, thereby dividing the inner ring 2 of the brake disc into 5 sub-segments 261. Each sub-segment 261 has several of the first heat dissipation grooves 211 and the second heat dissipation grooves 221. The above quantities are only preferred embodiments and are for reference only, and are not specifically limited.

[0050] III. Regarding the first heat dissipation groove 211 and the second heat dissipation groove 221: Refer to Figures 3-6 Both have closed ends 27 on their inner sides and open ends 28 on their outer sides, with the open ends 28 located at the outer edge of the inner ring 2 of the brake disc.

[0051] The closed end 27 allows space for the forming of the internal mounting holes and fixing holes 25, while also strengthening the structural strength of the inner ring of the brake pad.

[0052] The open end 28 serves two purposes: first, it satisfies the machining process, allowing the cutting tool of the machining equipment to start milling from the open end 28, moving towards the closed end 27 to form the required first heat dissipation groove 211 and second heat dissipation groove 221. Second, it serves as a chip removal opening, allowing some of the waste chips generated during machining to be discharged from the open end 28, ensuring stable tool feed; during use, impurities adhering to the inner ring 2 of the brake disc can also be discharged outward through the open end 28.

[0053] It is worth noting that the other technical solutions of this utility model are all existing technologies, and therefore will not be described in detail.

[0054] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the concept of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A brake disc that is easy to process and has strong heat dissipation performance, which is composed of an outer ring (1) and an inner ring (2); Its features are: The inner ring (2) of the brake disc has a first side (21) and a second side (22). The first side (21) is formed with a plurality of first heat dissipation grooves (211) along a first direction (21a), and the second side (22) is formed with a plurality of second heat dissipation grooves (221) along a second direction (22a). The first direction (21a) and the second direction (22a) are not parallel, so that the first heat dissipation groove (211) and the second heat dissipation groove (221) intersect each other and form a plurality of inner ring heat dissipation through holes (23); The inner ring heat dissipation through hole (23) extends from the first side (21) of the inner ring (2) of the brake disc to the second side (22).

2. The brake disc with easy processing and strong heat dissipation performance according to claim 1, characterized in that: The outer ring (1) of the brake disc is detachably connected to the inner ring (2) of the brake disc through multiple floating buckles (3).

3. The brake disc with easy processing and strong heat dissipation performance according to claim 1, characterized in that: The brake disc outer ring (1) is provided with a first outer ring heat dissipation through hole (11) and a second outer ring heat dissipation through hole (12); The first outer ring heat dissipation through hole (11) is distributed inside the second outer ring heat dissipation through hole (12), and the area of ​​the first outer ring heat dissipation through hole (11) is larger than the area of ​​the second outer ring heat dissipation through hole (12). The first outer ring heat dissipation through holes (11) are evenly distributed in the circumference, and the first outer ring heat dissipation through holes (11) are perpendicular to each other with the center line of the outer ring (1) of the brake disc. The second outer ring heat dissipation through holes (12) are evenly distributed circumferentially, and the second outer ring heat dissipation through holes (12) and the center line of the outer ring (1) of the brake disc are not perpendicular to each other.

4. The brake disc with easy processing and strong heat dissipation performance according to claim 1, characterized in that: The center of the inner ring (2) of the brake disc is provided with a positioning hole (24) for fitting the hub, and a number of fixing holes (25) are provided on the outer side of the positioning hole (24).

5. The brake disc with easy processing and strong heat dissipation performance according to claim 2, characterized in that: The inner ring (2) of the brake disc has several weight-reducing grooves (26), and the weight-reducing grooves (26) and the floating buckle (3) are distributed parallel to each other in the same direction.

6. The brake disc with easy processing and strong heat dissipation performance according to claim 5, characterized in that: The number of weight-reducing grooves (26) is 5, thereby dividing the inner ring (2) of the brake disc into 5 sub-segments (261), each sub-segment (261) having several of the first heat dissipation grooves (211) and the second heat dissipation grooves (221).

7. The brake disc with easy processing and strong heat dissipation performance according to claim 1, characterized in that: The number of the first heat dissipation grooves (211) is X, and the number of the second heat dissipation grooves (221) is Y. The X first heat dissipation grooves (211) and the Y second heat dissipation grooves (221) intersect to form M inner ring heat dissipation through holes (23), and satisfy M = X × Y.

8. The brake disc with easy processing and strong heat dissipation performance according to claim 1, characterized in that: The inner sides of the first heat dissipation groove (211) and the second heat dissipation groove (221) are both closed ends (27) and the outer sides are both open ends (28), and the open ends (28) are located at the outer edge of the inner ring (2) of the brake disc.

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