Disc brake assembly of electric vehicle with good braking performance

Abstract

The utility model relates to a kind of electric vehicle disc brake assembly with good brake performance, the electric vehicle disc brake assembly with good brake performance, including fixedly installed on the brake disc of axle, the axle one end is equipped with connecting plate, the connecting plate is fixedly connected with brake caliper, the brake caliper is fixedly installed with connecting shaft, when braking, the hydraulic oil in the oil cylinder drives piston rod to slip, and installation seat is extruded elastic spring piece compression to brake pad is attached brake disc, brake by the friction between brake pad and brake disc, when releasing brake, elastic spring piece is quickly pushed installation seat and brake pad and brake disc are separated under the action of its own elastic force, try to avoid the hydraulic oil of existing disc brake device only by oil injection pipe to control reset, brake pad may not be separated from brake disc quickly after releasing brake, prone to brake pad excessive wear, affect the problem of disc brake assembly brake performance.

Description

Technical Field

[0001] This utility model belongs to the technical field of electric vehicle disc brake mechanism, specifically relating to an electric vehicle disc brake assembly with good braking performance. Background Technology

[0002] The working principle of a disc brake system is to install a disc that rotates synchronously with the wheel on the wheel, and to install a caliper on the front fork of the frame. The disc is then clamped by friction pads on both sides of the caliper to achieve the purpose of braking.

[0003] Application number CN202022685728.6 provides a motor vehicle disc brake, which uses a hydraulic oil inlet pipe connected to one side of the hydraulic oil chamber to simultaneously drive the piston devices on both sides. When the brake is released, the piston device is only controlled by the hydraulic oil in the hydraulic oil inlet pipe to reset. Such reset efficiency is not high, that is, the friction pad cannot quickly separate from the disc after the brake is released, resulting in excessive wear of the friction pad, thereby reducing the braking performance of the disc brake assembly. Utility Model Content

[0004] The purpose of this utility model is to provide an electric vehicle disc brake assembly with a simple structure and reasonable design that has good braking performance in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A high-performance disc brake assembly for electric vehicles includes a brake disc fixedly mounted on an axle. A connecting plate is mounted on one end of the axle, and a brake caliper is fixedly connected to the connecting plate. A connecting shaft is fixedly mounted inside the brake caliper. Two mounting seats are symmetrically arranged on both sides of the brake disc. Brake pads, separate from the brake disc, are fixedly connected to adjacent sides of the two mounting seats. The top of each mounting seat is sleeved on the connecting shaft and slidably connected to it. A U-shaped elastic spring is provided between the two mounting seats. Two symmetrically arranged connecting holes are opened in the middle section of the elastic spring. The elastic spring is sleeved on the middle section of the connecting shaft through the connecting holes. Both ends of the elastic spring are integrally formed with claws. The two claws are respectively sleeved on the two brake pads and fit against the mounting seats. A hydraulic drive structure for driving the mounting seats to slide is also installed on the side wall of the brake caliper.

[0007] As a further optimization of this utility model, the brake disc has a disc-shaped structure, and multiple heat dissipation holes are opened on the periphery of the brake disc, with the multiple heat dissipation holes being equidistantly distributed around the center of the brake disc.

[0008] As a further optimization of this utility model, the hydraulic drive structure includes a cylinder fixedly installed on the side wall of the brake caliper. An oil chamber is provided inside the cylinder. The end of the oil chamber away from the brake caliper is sealed by a sealing structure. A piston rod is slidably connected to the end of the oil chamber near the brake caliper. A push plate is fixedly connected to the end of the piston rod located outside the oil chamber. The push plate is fixedly connected to the outer wall of the mounting base.

[0009] As a further optimization of this utility model, an oil injection pipe is fixedly connected to the outer wall of the oil cylinder. One end of the oil injection pipe passes through the side wall of the oil cylinder and communicates with the inside of the oil cavity. The other end of the oil injection pipe is equipped with a connector for connecting to an external pipeline.

[0010] As a further optimization of this utility model, the sealing structure is a sealing plate disposed at the end of the oil cavity away from the push plate, and a sealing screw is fixedly connected to the center of the sealing plate. The sealing plate is screwed to the inner wall of the oil cavity through the sealing screw.

[0011] As a further optimization of this utility model, the inner cavity size of the claw integrally formed at both ends of the elastic spring is adapted to the size of the brake pad, the end of the elastic spring is engaged with the brake pad through the claw, and the thickness of the claw is less than the thickness of the brake pad.

[0012] The beneficial effects of this utility model are as follows: When braking, the piston rod is driven to slide by the hydraulic oil in the cylinder, pushing the mounting seat to compress the elastic spring until the brake pads are in contact with the brake disc. Braking is achieved by the friction between the brake pads and the brake disc. When the brake is released, the elastic spring quickly pushes the mounting seat and the brake pads to separate from the brake disc under its own elastic force. This avoids the problem that existing disc brake devices rely solely on the hydraulic oil in the oil injection pipe for reset, and the brake pads may not be able to separate from the brake disc quickly after the brake is released, which can easily cause excessive wear of the brake pads and affect the braking performance of the disc brake assembly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the second overall structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the brake caliper and hydraulic cylinder of this utility model;

[0016] Figure 4 This is a schematic diagram of the connection structure of the push plate, piston rod and mounting base of this utility model;

[0017] Figure 5This is a schematic diagram of the connection structure of the brake pads, connecting shaft, elastic spring, pawl, and mounting base.

[0018] In the diagram: 1. Brake disc; 2. Heat dissipation hole; 3. Axle; 4. Connecting plate; 5. Brake caliper; 6. Hydraulic cylinder; 7. Oil chamber; 8. Sealing plate; 9. Piston rod; 10. Oil injection pipe; 11. Push plate; 12. Mounting base; 13. Brake pad; 14. Connecting shaft; 15. Elastic spring; 16. Connecting hole; 17. Claw. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example

[0021] like Figure 1 - Figure 5 As shown, an electric vehicle disc brake assembly with good braking performance includes a brake disc 1 fixedly mounted on an axle 3. The brake disc 1 has a disc-shaped structure and multiple heat dissipation holes 2 are opened on the periphery of the brake disc 1. The multiple heat dissipation holes 2 are evenly distributed around the center of the brake disc 1. When the brake disc 1 rotates with the axle 3, it can quickly dissipate heat through the multiple annularly distributed heat dissipation holes 2, so as to avoid the problem of the brake disc 1 being affected by excessive friction temperature during braking.

[0022] A connecting plate 4 is installed at one end of the axle 3. A brake caliper 5 is fixedly connected to the connecting plate 4. A connecting shaft 14 is fixedly installed inside the brake caliper 5. Two mounting seats 12 are symmetrically arranged on both sides of the brake disc 1. Brake pads 13, which are separate from the brake disc 1, are fixedly connected to the adjacent sides of the two mounting seats 12. The top of the mounting seat 12 is sleeved on the connecting shaft 14 and slidably connected to the connecting shaft 14. When the brake is not applied, the brake pads 13 are separated from the brake disc 1 and do not affect the normal driving of the electric vehicle. When the brake pads 13 are pushed towards the brake disc 1 and the brake pads 13 are in contact with the brake disc 1, the friction between the brake pads 13 and the brake disc 1 can be used for braking.

[0023] A U-shaped elastic spring 15 is provided between the two mounting seats 12. Two symmetrically arranged connecting holes 16 are opened in the middle section of the elastic spring 15. The elastic spring 15 is sleeved on the middle section of the connecting shaft 14 through the connecting holes 16. Both ends of the elastic spring 15 are integrally formed with claws 17. The two claws 17 are respectively sleeved on the two brake pads 13 and fit against the mounting seat 12. When the mounting seat 12 drives the brake pads 13 to slide along the connecting shaft 14 to brake, the mounting seat 12 will squeeze the U-shaped elastic spring 15 to contract. When the braking stops, the contracted elastic spring 15 will quickly push the mounting seat 12 to return to its original position under its own elastic force.

[0024] The inner cavity size of the integrally formed claw 17 at both ends of the elastic spring 15 is adapted to the size of the brake pad 13. The end of the elastic spring 15 is engaged with the brake pad 13 through the claw 17. The engagement method makes the connection between the end of the elastic spring 15 and the brake pad 13 more stable. In addition, the thickness of the claw 17 is less than the thickness of the brake pad 13, which can minimize the friction between the claw 17 and the brake disc 1 during braking, thus avoiding the problem of deformation and damage to the claw 17.

[0025] A hydraulic drive structure for driving the mounting base 12 to slide is also installed on the side wall of the brake caliper 5. The hydraulic drive structure includes a cylinder 6 fixedly installed on the side wall of the brake caliper 5. An oil chamber 7 is opened in the cylinder 6. The end of the oil chamber 7 away from the brake caliper 5 is sealed by a sealing structure. A piston rod 9 is slidably connected to the end of the oil chamber 7 close to the brake caliper 5. A push plate 11 is fixedly connected to the end of the piston rod 9 located outside the oil chamber 7. The push plate 11 is fixedly connected to the outer wall of the mounting base 12.

[0026] An oil injection pipe 10 is fixedly connected to the outer wall of the cylinder 6. One end of the oil injection pipe 10 passes through the side wall of the cylinder 6 and communicates with the inside of the oil chamber 7. The other end of the oil injection pipe 10 is equipped with a connector for connecting to an external pipe. When oil is injected into the oil chamber 7 opened in the cylinder 6 through the external pipe and the oil injection pipe 10, the oil cannot be compressed and the end of the oil chamber 7 away from the brake caliper 5 is sealed. The oil will push the piston rod 9 to slide into the brake caliper 5, which will drive the push plate 11 to push the mounting seat 12 to move synchronously, compress the elastic spring 15 to contract until the brake pad 13 is in contact with the brake disc 1, thereby achieving braking of the electric vehicle.

[0027] The sealing structure is a sealing plate 8 located at the end of the oil cavity 7 away from the push plate 11. A sealing screw is fixedly connected to the center of the sealing plate 8. The sealing plate 8 is screwed to the inner wall of the oil cavity 7 through the sealing screw. The sealing plate 8 is set to cooperate with the sealing screw to seal the oil cavity 7. At the same time, the user can screw the sealing plate 8 to adjust the length of the section of the sealing screw located in the oil cavity 7, thereby adjusting the sensitivity of the brake and making it convenient for the user to use.

[0028] It should be noted that this electric vehicle disc brake assembly with good braking performance, when braking is required, can inject oil into the oil chamber 7 opened in the cylinder 6 through the oil injection pipe 10. Since hydraulic oil is incompressible, and the end of the oil chamber 7 away from the brake caliper 5 is sealed by the sealing plate 8 and the sealing screw, the hydraulic oil will push the piston rod 9 to slide into the brake caliper 5, and push the mounting seat 12 to move synchronously with the push plate 11, squeezing the elastic spring 15 to contract until the brake pad 13 is in contact with the brake disc 1, thus achieving braking of the electric vehicle. When the brake is released, the compressed elastic spring 15, under its own elastic force, quickly pushes the mounting seat 12 to slide in the opposite direction along the connecting shaft 14, causing the brake pad 13 to quickly separate from the brake disc 1. This avoids the problem in existing disc brake devices where the brake pad 13 may not be able to quickly separate from the brake disc 1 after the brake is released, which can easily cause excessive wear of the brake pad 13 and affect the braking performance of the disc brake assembly.

[0029] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A disc brake assembly for an electric vehicle with good braking performance, comprising a brake disc (1) fixedly mounted on an axle (3), a connecting plate (4) mounted on one end of the axle (3), and a brake caliper (5) fixedly connected to the connecting plate (4), characterized in that: A connecting shaft (14) is fixedly installed inside the brake caliper (5). Two mounting seats (12) are symmetrically arranged on both sides of the brake disc (1). Brake pads (13) separate from the brake disc (1) are fixedly connected to the adjacent sides of the two mounting seats (12). The top of the mounting seat (12) is sleeved on the connecting shaft (14) and slidably connected to the connecting shaft (14). A U-shaped elastic spring (15) is provided between the two mounting seats (12). 5) Two symmetrically arranged connecting holes (16) are provided in the middle section. The elastic spring (15) is sleeved on the middle section of the connecting shaft (14) through the connecting holes (16). Both ends of the elastic spring (15) are integrally formed with claws (17). The two claws (17) are respectively sleeved on the two brake pads (13) and fit against the mounting seat (12). The brake caliper (5) is also equipped with a hydraulic drive structure for driving the mounting seat (12) to slide.

2. The electric vehicle disc brake assembly with good braking performance according to claim 1, characterized in that: The brake disc (1) has a disc-shaped structure, and multiple heat dissipation holes (2) are provided on the periphery of the brake disc (1). The multiple heat dissipation holes (2) are equidistantly distributed around the center of the brake disc (1).

3. The electric vehicle disc brake assembly with good braking performance according to claim 1, characterized in that: The hydraulic drive structure includes a cylinder (6) fixedly mounted on the side wall of the brake caliper (5). The cylinder (6) has an oil chamber (7). The end of the oil chamber (7) away from the brake caliper (5) is sealed by a sealing structure. The end of the oil chamber (7) near the brake caliper (5) is slidably connected to a piston rod (9). A push plate (11) is fixedly connected to the end of the piston rod (9) located outside the oil chamber (7). The push plate (11) is fixedly connected to the outer wall of the mounting base (12).

4. The electric vehicle disc brake assembly with good braking performance according to claim 3, characterized in that: An oil injection pipe (10) is fixedly connected to the outer wall of the oil cylinder (6). One end of the oil injection pipe (10) passes through the side wall of the oil cylinder (6) and communicates with the inside of the oil chamber (7). The other end of the oil injection pipe (10) is equipped with a connector for connecting to an external pipeline.

5. The electric vehicle disc brake assembly with good braking performance according to claim 3, characterized in that: The sealing structure is a sealing plate (8) located at the end of the oil cavity (7) away from the push plate (11). A sealing screw is fixedly connected to the center of the sealing plate (8), and the sealing plate (8) is screwed to the inner wall of the oil cavity (7) through the sealing screw.

6. The electric vehicle disc brake assembly with good braking performance according to claim 1, characterized in that: The inner cavity of the claw (17) integrally formed at both ends of the elastic spring (15) is adapted to the size of the brake pad (13). The end of the elastic spring (15) is engaged with the brake pad (13) through the claw (17), and the thickness of the claw (17) is less than the thickness of the brake pad (13).

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