Combined disc brake disc for electric vehicle

Abstract

The utility model discloses a combined disc brake disc for an electric vehicle, which belongs to the technical field of disc brake discs and comprises a main disc brake disc and an auxiliary disc brake disc, a plurality of connecting blocks which are annularly distributed at equal intervals are fixedly connected between the main disc brake disc and the auxiliary disc brake disc, and a plurality of ventilation slots are arranged between the main disc brake disc and the auxiliary disc brake disc. A connecting disc is arranged at the outer end of the main disc brake disc, a plurality of fixing assemblies which are annularly distributed at equal intervals are arranged at the outer end of the connecting disc, a connecting assembly is arranged between the main disc brake disc and the connecting disc, the connecting disc and the main disc brake disc are connected through the connecting assembly and the fixing assemblies, and a buckling groove is formed in the outer edge of the connecting disc. The first fixing block is fixed to the edge of the inner ring of the main disc brake disc, the first fixing block and the buckling groove are matched and then fixedly connected through the fixing assembly, a certain floating space is formed between the main disc brake disc and the connecting disc, and when the main disc brake disc is heated and expanded, a certain telescopic space is formed. Therefore, the main brake disc is not easy to deform or crack.

Description

Technical Field

[0001] The utility model relates to the technical field of disc brake discs, and more specifically, to a combined disc brake disc for electric vehicles. Background Art

[0002] Disc brakes for electric vehicles are a component of the braking system, typically made of metal, used to stop electric vehicles. By clamping and applying pressure to the brakes, disc brakes convert the vehicle's kinetic energy into heat, thereby slowing or stopping the vehicle. Compared to traditional drum brake systems, disc brakes offer improved heat dissipation, higher braking efficiency, and shorter stopping distances. They perform better at high speeds and in emergency stops, making them widely used in many modern electric vehicles.

[0003] Chinese patent publication number CN216951403U discloses a combined disc brake disc. By opening a number of annular through holes on the disc brake disc body, on the one hand, the exposed area of the disc brake disc body is reduced, thereby reducing the adhesion area of dust on the surface of the disc brake disc body. On the other hand, the opening of the number of annular through holes also improves the heat dissipation effect of the disc brake disc body, avoiding the situation where the temperature of the disc brake disc body is too high. The opening of the ventilation holes on the disc brake disc body allows the disc brake disc assembly to introduce air into the annular through holes through the ventilation holes during operation. On the one hand, the fluidity of the wind at the annular through holes is improved, thereby improving the cooling effect of the annular through holes on the disc brake disc body. On the other hand, the improvement of the wind fluidity in the annular through holes also avoids the situation where dust adheres and stays at the annular through holes.

[0004] The principle of disc brakes is to convert mechanical kinetic energy into heat energy through friction. Therefore, the brake disc is prone to overheating after long-term continuous braking. Brake discs are made of metal, and metal has the phenomenon of thermal expansion and contraction. Traditional electric vehicle brake discs are one-piece. The thermal expansion and contraction process can easily cause thermal cracks in the brake disc, or a certain degree of deformation and distortion, thereby affecting the surface flatness of the disc.

[0005] Therefore, it is necessary to provide a combined disc brake disc for an electric vehicle to solve the above problems. Utility Model Content

[0006] The utility model provides a combined disc brake disc for electric vehicles, which can improve the existing problems in the related art that the brake disc is an integrated type, and the thermal expansion and contraction process can easily cause thermal cracks in the brake disc, or a certain degree of deformation and distortion, thereby affecting the surface flatness of the disc.

[0007] An embodiment of the present application provides a combined disc brake disc for an electric vehicle, comprising a main disc brake disc and a secondary disc brake disc, wherein a plurality of connecting blocks distributed in an annular shape and at equal intervals are fixedly connected between the main disc brake disc and the secondary disc brake disc, and the connecting blocks are arranged in an arc shape, and a plurality of ventilation grooves are arranged between the main disc brake disc and the secondary disc brake disc, and the ventilation grooves are adapted to the connecting blocks, a connecting disc is provided at the outer end of the main disc brake disc, and a plurality of fixing components distributed in an annular shape and at equal intervals are provided at the outer end of the connecting disc, and a connecting component is provided between the main disc brake disc and the connecting disc.

[0008] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0009] (1) The connecting plate and the main disc brake disc are connected by a connecting assembly and a fixing assembly. A buckle groove is provided on the outer edge of the connecting plate, and the fixing block 1 is fixed on the inner edge of the main disc brake disc. After the fixing block 1 and the buckle groove are matched, they are fixedly connected by the fixing assembly. Since there is a certain gap between the abutting beads on the buckle groove and the abutting groove on the fixing block 1, there is a certain floating space between the main disc brake disc and the connecting plate. When the main disc brake disc expands due to heat, there is a certain expansion space, so that the main disc brake disc is not easy to deform or crack.

[0010] (2) A double-layer structure can be formed by the main disc brake disc and the auxiliary disc brake disc. A plurality of connecting blocks are arranged between the main disc brake disc and the auxiliary disc brake disc. The space between the plurality of connecting blocks is a ventilation slot. The connecting blocks and the ventilation slot are arranged in an arc shape. When the main disc brake disc and the auxiliary disc brake disc rotate with the wheel, wind will flow into the ventilation slot, thereby taking away the heat generated by the main disc brake disc and the auxiliary disc brake disc, thereby improving the heat dissipation effect.

[0011] In some embodiments, the outer ends of the main disc brake disc and the auxiliary disc brake disc are provided with multiple groups of heat dissipation holes 2, and the multiple groups of heat dissipation holes 2 correspond one-to-one to multiple ventilation slots. The heat dissipation holes 2 are connected to the interior of the ventilation slots, and the inner walls on both sides of the ventilation slots are fixedly connected with multiple heat sinks.

[0012] In some embodiments, a plurality of heat dissipation holes are provided at the outer end of the connection plate, and a plurality of mounting holes are provided at the outer end of the connection plate.

[0013] In some embodiments, the connecting assembly includes a fixing block 1, the bottom end of which is fixedly connected to a fixing block 2, both the fixing block 1 and the fixing block 2 are fixedly connected to the outer end of the main disc brake, and the outer end of the fixing block 1 is fixedly connected to a buckle.

[0014] In some embodiments, a plurality of buckle grooves are provided at the outer end of the connecting plate, the buckle grooves are matched with the buckle ring, two abutting balls are fixedly connected to the inner side of the buckle groove, and two abutting grooves matched with the abutting balls are provided on the side of the fixing block close to the buckle ring, and a gap is provided between the fixing block and the buckle groove.

[0015] In some embodiments, the fixing assembly includes a screw rod, the outer end of the screw rod is threadedly connected to a screw sleeve, and the top end of the screw rod is fixedly connected to a nut.

[0016] In some embodiments, the interior of the nut is hollow, and a plurality of through holes are formed at the outer end of the nut, and the screw rod passes through the retaining ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

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

[0019] Figure 2 This is a second overall structural diagram of the present utility model;

[0020] Figure 3 This is a schematic diagram of the disc brake separation structure of the utility model;

[0021] Figure 4 For the utility model Figure 3 A in the middle is an enlarged structural diagram;

[0022] Figure 5 This is a schematic diagram of the connection disk structure of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the fixing component and the connecting component of the present utility model;

[0024] Figure 7 This is a schematic diagram of the bottom structure of the connecting component of the present invention.

[0025] Description of the numbers in the figure:

[0026] 1. Main disc brake;

[0027] 2. Auxiliary disc brake;

[0028] 3. Connecting plate;

[0029] 4. Connecting assembly; 41. Fixing block 1; 42. Fixing block 2; 43. Buckle; 44. Buckle groove; 45. Abutment bead; 46. Abutment groove;

[0030] 5. Fixing assembly; 51. Nut; 52. Sleeve; 53. Screw; 54. Through hole;

[0031] 6. Heat dissipation hole 1;

[0032] 7. Mounting holes;

[0033] 8. Connecting blocks;

[0034] 9. Ventilation slots;

[0035] 10. Heat dissipation hole 2;

[0036] 11. Heat sink. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0038] Based on this, the problem in the related technology that the brake disc is one-piece and the thermal expansion and contraction process can easily cause thermal cracks in the brake disc, or a certain degree of deformation and distortion, thereby affecting the surface flatness of the disc.

[0039] See also Figure 1-Figure 7 A combined disc brake disc for an electric vehicle includes a main disc brake disc 1 and a subsidiary disc brake disc 2. A plurality of connecting blocks 8 distributed in an annular shape and at equal intervals are fixedly connected between the main disc brake disc 1 and the subsidiary disc brake disc 2. The connecting blocks 8 are arranged in an arc shape. A plurality of ventilation grooves 9 are arranged between the main disc brake disc 1 and the subsidiary disc brake disc 2. The ventilation grooves 9 are adapted to the connecting blocks 8. A connecting disc 3 is provided at the outer end of the main disc brake disc 1. A plurality of fixing components 5 distributed in an annular shape and at equal intervals are provided at the outer end of the connecting disc 3. A connecting component 4 is provided between the main disc brake disc 1 and the connecting disc 3.

[0040] The outer ends of the main disc brake disc 1 and the auxiliary disc brake disc 2 are provided with multiple groups of heat dissipation holes 2 10, and the multiple groups of heat dissipation holes 2 10 correspond one-to-one to the multiple ventilation slots 9. The heat dissipation holes 2 10 are connected to the inside of the ventilation slots 9, and multiple heat sinks 11 are fixedly connected to the inner walls on both sides of the ventilation slots 9.

[0041] The outer end of the connection plate 3 is provided with a plurality of heat dissipation holes 6, and the outer end of the connection plate 3 is provided with a plurality of mounting holes 7.

[0042] At present, the speed of high-performance electric vehicles on the market is constantly increasing, so there are higher requirements for brakes. The device in this scheme is mainly used for the braking system of high-performance electric vehicles. The principle of disc brakes is to convert mechanical kinetic energy into heat energy through friction. Therefore, the brake disc is prone to overheating after long-term continuous braking. The brake discs are made of metal materials, and metals have the phenomenon of thermal expansion and contraction. The traditional electric vehicle brake disc is one-piece. When the brake disc expands due to heat, it is prone to a certain degree of deformation and distortion, which will cause the brake disc surface to be uneven, thereby affecting the performance and stability of the braking system. At the same time, this thermal expansion and contraction process may cause thermal cracks in the brake disc, and the cracks will affect the structural integrity and performance of the brake disc. The diameter and size of the main disc brake disc 1 and the auxiliary disc brake disc 2 are the same. A plurality of connecting blocks 8 distributed in an annular shape and at equal intervals are fixed between the brake disc 1 and the auxiliary brake disc 2, so that the main brake disc 1 and the auxiliary brake disc 2 can form a double-layer structure. A fixing block 41 is fixed to the outer end of the main brake disc 1, and the connecting disc 3 is connected to the main brake disc 1 through a fixing component 5. A buckle groove 44 is provided on the outer edge of the connecting disc 3, and the fixing block 41 is fixed to the inner ring edge of the main brake disc 1. After the fixing block 41 and the buckle groove 44 are matched, they are fixedly connected through the fixing component 5. Since there is a certain gap between the abutting beads 45 on the buckle groove 44 and the abutting groove 46 on the fixing block 41, there is a certain floating space between the main brake disc 1 and the connecting disc 3. When the main brake disc 1 expands due to heat, it has a certain expansion and contraction space, so that the main brake disc 1 is not prone to deformation or cracks.

[0043] At the same time, the connecting block 8 is arranged in an arc shape, and ventilation slots 9 are formed between the multiple connecting blocks 8. Since the connecting block 8 is arranged in an arc shape, the ventilation slots 9 are also arranged in an arc shape. Multiple rows of heat sinks 11 are fixed on the inner walls on both sides of the ventilation slots 9. The heat sinks 11 in each row are distributed at equal distances and are staggered inside the ventilation slots 9. When the main disc brake disc 1 and the auxiliary disc brake disc 2 are clamped by the brake pads in the brake system for braking, the main disc brake disc 1 and the auxiliary disc brake disc 2 will generate a lot of heat by friction with the brake pads. When the main disc brake disc 1 and the auxiliary disc brake disc 2 are clamped by the brake pads, a lot of heat will be generated. When the brake disc 2 rotates with the wheel, since the ventilation slot 9 is arranged in an arc shape, the main disc brake disc 1 and the auxiliary disc brake disc 2 can allow more wind to be poured into the ventilation slot 9 by rotating. The arc-shaped setting of the connecting block 8 and the ventilation slot 9 can increase the air intake amount. At the same time, since the bending distance is longer, its area can be increased, the contact surface with the wind is increased, and the heat dissipation effect is improved. The multiple rows of heat sinks 11 arranged on the inner wall of the ventilation slot 9 can further increase the contact area with the wind, so that the heat on the main disc brake disc 1 and the auxiliary disc brake disc 2 can be carried away more quickly by the injected wind.

[0044] A plurality of groups of heat dissipation holes 2 10 are provided at the outer ends of the main disc brake disc 1 and the auxiliary disc brake disc 2. The number of groups of heat dissipation holes 2 10 is the same as the number of ventilation slots 9, and they are located at the same position as the ventilation slots 9. At the same time, the plurality of heat dissipation holes 2 10 in each group of heat dissipation holes 2 10 are also arranged in an arc shape, with the same path as the ventilation slots 9. The ventilation slots 9 are connected with the heat dissipation holes 2 10 on the main disc brake disc 1 and the auxiliary disc brake disc 2, so that the ventilation slots 9 can be connected with the external environment, so that the heat of the main disc brake disc 1 and the auxiliary disc brake disc 2 can be dissipated faster, thereby improving the heat dissipation effect.

[0045] The connecting plate 3 is arranged in a truncated cone shape, and a plurality of heat dissipation holes 6 distributed in an annular pattern are provided on its outer circumference. The heat dissipation holes 6 can not only improve the ventilation and heat dissipation effect, but also reduce its own weight. A plurality of mounting holes 7 are provided on the outer end of the connecting plate 3. The mounting holes 7 are mainly used to fix the connecting plate 3 on the wheel by using bolts to connect it to the vehicle.

[0046] Optionally, in some embodiments, see Figure 5-Figure 7 The connecting component 4 includes a fixing block 41, the bottom end of the fixing block 41 is fixedly connected to a fixing block 42, the fixing block 41 and the fixing block 42 are both fixedly connected to the outer end of the main disc brake 1, and the outer end of the fixing block 41 is fixedly connected to a buckle 43.

[0047] A plurality of buckle grooves 44 are provided at the outer end of the connecting plate 3, and the buckle grooves 44 are adapted to the buckle ring 43. Two abutting balls 45 are fixedly connected to the inner side of the buckle groove 44. Two abutting grooves 46 adapted to the abutting balls 45 are provided on the side of the fixing block 41 close to the buckle ring 43, and a gap is provided between the fixing block 41 and the buckle groove 44.

[0048] The fixing assembly 5 includes a screw rod 53 , the outer end of the screw rod 53 is threadedly connected to a screw sleeve 52 , and the top end of the screw rod 53 is fixedly connected to a nut 51 .

[0049] The interior of the nut 51 is hollow, and a plurality of through holes 54 are defined at the outer end of the nut 51 . The screw 53 passes through the retaining ring 43 .

[0050] The bottom end of the fixing block 1 41 in this solution is fixed with the fixing block 2 42, and both the fixing block 1 41 and the fixing block 2 42 are fixed to the inner ring of the main disc brake disc 1. The fixing block 1 41 is mainly fixed to the outer surface of the main disc brake disc 1, and the fixing block 2 42 is connected to the inner wall of the inner ring of the main disc brake disc 1, so that it can increase the firmness of the connection with the main disc brake disc 1, and can be connected by welding. A buckle 43 is fixed to the outer end of the fixing block 1 41. The buckle 43 is annular, and a buckle groove 44 is provided at the outer edge of the connecting disc 3. The notch formed by the buckle groove 44 matches the shape of the combination of the fixing block 1 41 and the buckle 43. When the buckle 43 is inserted into the buckle groove 44, the buckle 43 is inserted into the buckle groove 44. When the retaining ring 43 is inserted into the buckle groove 44, the abutting beads 45 are half-inserted into the abutting groove 46, which plays a role in limiting the large movement of the connecting disk 3. At the same time, there is a certain distance between the buckle groove 44 and the fixing block 41, so that the connecting disk 3 can move radially in a small range when connected to the main disc brake disc 1, thereby reserving a certain space for the main disc brake disc 1. When the main disc brake disc 1 expands due to heat, it will not be squeezed, making it less likely for the main disc brake disc 1 to deform or crack.

[0051] The fixing assembly 5 is mainly used to connect the fixing block 41 and the connecting disk 3 together. The bottom end of the nut 51 is fixed with a screw 53, and the outer end of the screw 53 is threadedly connected to a screw sleeve 52. The nut 51 is hollow, and a plurality of through holes 54 are opened on the outer periphery of the nut 51. The hollow nut 51 and the through holes 54 opened on the outer side can not only increase its heat dissipation effect, but also reduce its weight. By inserting the screw 53 into the buckle 43 and then locking it with the screw sleeve 52, the fixing block 41 is restricted by the buckle groove 44, and the nut 51 and the screw 53 will clamp the fixing block 41 and the connecting disk 3 together, so that the connecting disk 3 can only move radially but not axially, thereby preventing the main disc brake disc 1 and the auxiliary disc brake disc 2 from axial shaking after installation and improving their stability.

[0052] Working principle: When the main disc brake disc 1 and the auxiliary disc brake disc 2 are braked, a large amount of heat is generated by the friction between the main disc brake disc 1 and the auxiliary disc brake disc 2 and the brake pads. At the same time, the main disc brake disc 1 and the auxiliary disc brake disc 2 rotate with the wheel. Since the ventilation slots 9 are arranged in an arc shape, more wind can be poured into the ventilation slots 9. The multiple rows of heat sinks 11 arranged on the inner wall of the ventilation slots 9 can increase the contact area with the wind, so that the heat on the main disc brake disc 1 and the auxiliary disc brake disc 2 can be taken away more quickly by the poured wind, thereby achieving the purpose of heat dissipation. The connecting plate 3 is connected to the main disc brake disc 1 through the fixing component 5. The outer edge of the connecting plate 3 is provided with a buckle groove 44, and the fixing block 1 41 is fixed at the inner ring edge of the main disc brake disc 1. Since there is a certain gap between the abutting beads 45 on the buckle groove 44 and the abutting groove 46 on the fixing block 1 41, there is a certain floating space between the main disc brake disc 1 and the connecting plate 3. When the main disc brake disc 1 expands due to heat, it has a certain expansion and contraction space.

Claims

1. A combined disc brake disc for an electric vehicle, comprising a main disc brake disc (1) and a secondary disc brake disc (2), characterized in that: A plurality of connecting blocks (8) distributed in an annular shape and at equal intervals are fixedly connected between the main disc brake disc (1) and the auxiliary disc brake disc (2), and the connecting blocks (8) are arranged in an arc shape. A plurality of ventilation slots (9) are arranged between the main disc brake disc (1) and the auxiliary disc brake disc (2), and the ventilation slots (9) are adapted to the connecting blocks (8). A connecting disc (3) is arranged at the outer end of the main disc brake disc (1), and a plurality of fixing components (5) distributed in an annular shape and at equal intervals are arranged at the outer end of the connecting disc (3). A connecting component (4) is arranged between the main disc brake disc (1) and the connecting disc (3).

2. The combined disc brake disc for an electric vehicle according to claim 1, characterized in that: The outer ends of the main brake disc (1) and the auxiliary brake disc (2) are provided with a plurality of heat dissipation holes (10), the plurality of heat dissipation holes (10) correspond one-to-one to the plurality of ventilation slots (9), the heat dissipation holes (10) are connected to the interior of the ventilation slots (9), and the inner walls on both sides of the ventilation slots (9) are fixedly connected with a plurality of heat sinks (11).

3. The combined disc brake disc for an electric vehicle according to claim 1, characterized in that: The outer end of the connection plate (3) is provided with a plurality of heat dissipation holes (6), and the outer end of the connection plate (3) is provided with a plurality of mounting holes (7).

4. The combined disc brake disc for an electric vehicle according to claim 1, characterized in that: The connecting assembly (4) includes a fixing block 1 (41), the bottom end of the fixing block 1 (41) is fixedly connected to a fixing block 2 (42), the fixing block 1 (41) and the fixing block 2 (42) are both fixedly connected to the outer end of the main disc brake (1), and the outer end of the fixing block 1 (41) is fixedly connected to a buckle (43).

5. The combined disc brake disc for an electric vehicle according to claim 4, characterized in that: The outer end of the connecting plate (3) is provided with a plurality of buckle grooves (44), the buckle grooves (44) are adapted to the buckle ring (43), two abutting balls (45) are fixedly connected to the inner side of the buckle groove (44), and two abutting grooves (46) adapted to the abutting balls (45) are provided on the side of the fixing block (41) close to the buckle ring (43), and a gap is provided between the fixing block (41) and the buckle groove (44).

6. The combined disc brake disc for an electric vehicle according to claim 4, characterized in that: The fixing assembly (5) comprises a screw rod (53), the outer end of the screw rod (53) is threadedly connected to a screw sleeve (52), and the top end of the screw rod (53) is fixedly connected to a nut (51).

7. The combined disc brake disc for an electric vehicle according to claim 6, characterized in that: The interior of the nut (51) is hollow, and a plurality of through holes (54) are provided at the outer end of the nut (51), and the screw rod (53) passes through the buckle (43).

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