Integrated electric brake device and control system thereof

Abstract

The utility model relates to the technical field of brakes, and discloses an integrated electric brake device and a control system thereof, the integrated electric brake device comprises a brake pedal, a pressure sensor and an electric brake assembly, the pressure sensor and the electric brake assembly are installed on the brake pedal, and the brake pedal controls the electric brake assembly to start and stop; comprising a control end and four execution ends, and the control end communicates with the four execution ends. According to the integrated electric brake device and the control system thereof, one main control end is provided with four execution ends for use, the four execution ends operate simultaneously and independently, the situation that when one brake of a traditional hydraulic brake system is damaged, a whole vehicle cannot be braked is avoided, electric drive braking is achieved, and the brake efficiency is improved. Control can be achieved only through an adjustable-speed motor, the braking distance is short, the response speed is high, meanwhile, the braking contact face is large, the friction coefficient is increased, the braking effect is good, a vacuum system and an inflating device do not need to be independently installed, and the structure is simple and environmentally friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of brakes, in particular to an integrated electric brake device and its control system. Background Technique

[0002] With the rapid development of the automotive industry and the increasing global requirements for sustainability and environmental protection, the automotive braking system, as a key component to ensure driving safety, its technological innovation is particularly important. Although the traditional hydraulic braking system meets the basic braking requirements to a certain extent, it has obvious deficiencies in terms of intelligence, energy efficiency, and environmental protection.

[0003] Regarding the above and existing related technologies, the following defects often exist: The traditional drum brake is hydraulically driven. The hydraulic braking system usually includes multiple components, such as hydraulic pumps, hydraulic cylinders, control valves, pipelines, etc. The coordinated operation of these components requires a certain amount of time, with a slow reaction speed and jamming after long-term use. At the same time, rubber parts are easily damaged after long-term use, resulting in oil leakage and air leakage, which in turn leads to the failure of the braking system, and there are many pain points.

[0004] Therefore, we propose an integrated electric brake device and its control system. Content of the Utility Model

[0005] In view of the above problems of the existing traditional drum brake being hydraulically driven, the hydraulic braking system usually includes multiple components, such as hydraulic pumps, hydraulic cylinders, control valves, pipelines, etc. The coordinated operation of these components requires a certain amount of time, with a slow reaction speed and jamming after long-term use. At the same time, rubber parts are easily damaged after long-term use, resulting in oil leakage and air leakage, which in turn leads to the failure of the braking system, and there are many pain points, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide an integrated electric brake device and its control system, aiming to: change the traditional hydraulic braking method to electric drive, with a fast reaction speed and good braking effect.

[0007] To solve the above technical problems, the present utility model provides the following technical solution: An integrated electric brake device includes a brake pedal, a pressure sensor installed on the brake pedal, and an electric brake assembly, and the brake pedal controls the start and stop of the electric brake assembly;

[0008] The electric brake assembly includes a brake base plate, a brake drum is mounted on one end face of the brake base plate, brake shoes are rotatably mounted on both sides of the end face of the brake base plate close to the brake drum, friction plates are mounted on the outer sides of the two brake shoes, U-shaped buckles are welded between the opposite faces of the two brake shoes, a return spring is mounted between the two U-shaped buckles, side connecting blocks are mounted at the opposite ends of the two brake shoes, a cam block is rotatably mounted on the brake base plate close to the brake drum and between the two side connecting blocks, and a driving source for driving the cam block to rotate is mounted on the top of the brake drum.

[0009] As an improved technical solution, rotating shafts are rotatably mounted on both sides of the end of the brake base plate close to the brake drum through bearings, and the brake shoes are rotatably mounted on the rotating shafts. Two connecting blocks are rotatably mounted between the two rotating shafts, and the brake shoes are located between the two connecting blocks.

[0010] As an improved technical solution, the driving source includes a cushion seat mounted on the top of the brake drum and a linkage shaft rotatably mounted on the brake base plate through a bearing. The cam block is fixed to one end of the linkage shaft. A speed reducer is mounted on the top of the cushion seat. The input end of the speed reducer is fixedly connected to the driving end of a speed control motor. A transmission assembly is mounted between the output end of the speed reducer and the other end of the linkage shaft.

[0011] As an improved technical solution, wear detection components are mounted on both sides of the end of the brake base plate close to the brake drum, and the two wear detection components on both sides respectively correspond to the friction plates on both sides.

[0012] As an improved technical solution, the wear detection component includes a linear motor mounted on the brake base plate. An infrared distance sensor is fixedly mounted on the movable end of the linear motor. The distance measuring end of the infrared distance sensor faces the outer arc edge of the friction plate. It is defined that when the detection ray of the infrared distance sensor shoots at the outer arc edge of the friction plate and is blocked by the arc edge, it is the measurement origin, and the measurement distance at this time is A.

[0013] A control system of an integrated electric brake device includes a control end and four execution ends. The control end communicates with the four execution ends respectively. When the brake pedal is stepped on, the pressure sensor is compressed. The control end detects the compression signal of the pressure transmitter, sends a signal to the execution end, and the execution end controls the electric brake assembly to perform braking.

[0014] As an improved technical solution, the control end includes a first processor, a second communication module, a brake signal sending module, a self-check signal sending module and a display module. The brake signal sending module is used to send a brake signal to the execution end when it detects that the pressure sensor is compressed and when the motor vehicle is parked. The self-check signal sending module is used to send a signal to the execution end to detect the wear condition of the friction plate. The display module is data-connected to the instrument panel of the wheel.

[0015] As an improved technical solution, the brake signal sending module includes a pressure determination unit and an active trigger unit. The pressure determination unit is used to judge the pressure received by the pressure sensor. The active trigger unit can trigger a brake signal once when the motor vehicle is parked, braked and not started, and when the brake button is manually triggered. The self-check signal sending module includes an active start unit and a timing start unit. The active start unit is controlled by manual operation through a button for detection. The timing start unit includes detecting the friction plate once each time the motor vehicle starts and shuts down, and can also perform periodic drive detection.

[0016] As an improved technical solution, the execution end includes a second processor, a second passage module, a brake execution module and a self-check execution module. The brake execution module is used to receive the brake signal sent by the brake signal sending module, and controls the cam block to rotate by a drive source to control the friction plate to perform braking. The self-check execution module is used to receive the self-check signal sent by the self-check signal sending module, and controls the wear detection component to start detecting the wear of the friction plate.

[0017] As an improved technical solution, the brake execution module includes a motor adjustment unit, and the motor adjustment unit is used to adjust the rotation speed and torque of the speed control motor during operation.

[0018] The beneficial effects of the present utility model are as follows:

[0019] 1. In the present utility model, the speed control motor drives the two brake shoes to rotate around the rotating shaft, moves the friction plate away from the return spring and performs braking. The motor drives the friction plate to work, with fast response speed and short braking distance. And since the whole friction plate is a braking surface, the braking contact area is large and the braking effect is good.

[0020] 2. In the present utility model, the infrared ranging sensor is used to detect the distance between the sensor and the friction plate. If the measured distance is A, it means that the friction plate is not worn out. If the measured distance is greater than A, it indicates that the friction plate has wear. It can not only detect whether the friction plate is worn, but also measure the wear state of the friction plate and display it on the instrument panel.

[0021] 3. This utility model is used with one control end equipped with four execution ends. The four execution ends operate simultaneously and independently, avoiding the situation in the traditional hydraulic braking system where the entire vehicle cannot brake when one brake fails. Moreover, with electric drive braking, it can be controlled simply by a speed control motor, featuring a short braking distance, fast response speed. At the same time, the braking contact surface is large, the friction coefficient increases, and the braking effect is good. Additionally, there is no need to install a separate vacuum system and air pumping device, with a simple structure, environmental protection, long service life and low usage cost.

[0022] 4. In this utility model, every time a motor vehicle starts and shuts down, a wear detection signal of the friction plate is sent from the self-built signal sending module to the self-check execution module of the execution end once, and the wear result of the friction plate is fed back and displayed on the instrument panel, enabling a more intuitive and real-time understanding of the wear degree of the friction plate, facilitating the driver's grasp of the wear degree of the friction plate, and improving the safety of driving the motor vehicle.

[0023] 5. In this utility model, when the motor vehicle is parked, braked and not started, and when the braking button is manually triggered, the braking signal sending module will send a braking signal to the execution end, achieving the effect of automatic parking when the vehicle is not moving, which is conducive to improving the safety of driving the motor vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of this utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0025] Figure 1 It is a schematic diagram of the overall structure of an integrated electric braking device and its control system of this utility model.

[0026] Figure 2 It is a schematic diagram of the structure of the drive source of an integrated electric braking device and its control system of this utility model.

[0027] Figure 3 It is a schematic diagram of the structure of the wear detection component of an integrated electric braking device and its control system of this utility model.

[0028] Figure 4 It is a schematic diagram of the modular structure of the control system of an integrated electric braking device and its control system of this utility model.

[0029] Figure 5 It is a schematic diagram of the modular structure of the control end and the execution end of an integrated electric braking device and its control system of this utility model.

[0030] Description of the reference numerals:

[0031] 1. Brake bottom plate; 2. Brake drum; 3. Wear detection assembly; 31. Linear motor; 32. Infrared distance sensor; 4. Driving source; 41. Pad base; 42. Speed-regulating motor; 43. Reducer; 44. Transmission assembly; 45. Linkage shaft; 5. Side connecting block; 6. Cam block; 7. Rebound spring; 8. Connecting block; 9. Rotating shaft; 10. Brake shoe; 11. Friction plate; 12. U-shaped buckle. Detailed implementation manners

[0032] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model with reference to the accompanying drawings of the specification.

[0033] Refer to Figures 1-5 , which is an embodiment of the present utility model, provides an integrated electric brake device and its control system. Such an integrated electric brake device includes a brake pedal, a pressure sensor installed on the brake pedal, and an electric brake assembly, and the brake pedal controls the start and stop of the electric brake assembly;

[0034] The electric brake assembly includes a brake bottom plate 1, a brake drum 2 is installed on one end face of the brake bottom plate 1, two brake shoes 10 are rotatably installed on both sides of the end face of the brake bottom plate 1 close to the brake drum 2, and friction plates 11 are installed on the outer sides of the two brake shoes 10. Since the friction plates 11 are all braking surfaces as a whole, the braking contact surface is large and the braking effect is good. U-shaped buckles 12 are welded between the opposite surfaces of the two brake shoes 10, a rebound spring 7 is installed between the two U-shaped buckles 12, side connecting blocks 5 are installed at the opposite ends of the two brake shoes 10, and a cam block 6 is rotatably installed at one end of the brake bottom plate 1 close to the brake drum 2 and between the two side connecting blocks 5, and a driving source 4 for driving the cam block 6 to rotate is installed on the top of the brake drum 2.

[0035] Rotating shafts 9 are rotatably installed on both sides of one end of the brake bottom plate 1 close to the brake drum 2 through bearings, and the brake shoes 10 are rotatably installed on the rotating shafts 9. Two connecting blocks 8 are rotatably installed between the two rotating shafts 9, and the brake shoes 10 are located between the two connecting blocks 8.

[0036] The driving source 4 includes a pedestal 41 installed on the top of the brake drum 2 and a linkage shaft 45 rotatably installed on the brake base plate 1 through bearings. A cam block 6 is fixed to one end of the linkage shaft 45. A speed reducer 43 is installed on the top of the pedestal 41. The input end of the speed reducer 43 is fixedly connected to the driving end of a speed control motor 42. Driven by the motor, the reaction speed is fast and the braking distance is short. A transmission component 44 is installed between the output end of the speed reducer 43 and the other end of the linkage shaft 45. The transmission component 44 is composed of two sprockets and a chain installed between the two sprockets. The transmission component 44 is a mature existing technology, so it will not be elaborated here.

[0037] Wear detection components 3 are installed on both sides of one end of the brake base plate 1 close to the brake drum 2, and the two wear detection components 3 on both sides respectively correspond to the friction plates 11 on both sides.

[0038] The wear detection component 3 includes a linear motor 31 installed on the brake base plate 1. An infrared distance sensor 32 is fixedly installed at the movable end of the linear motor 31. The distance measuring end of the infrared distance sensor 32 faces the outer arc edge of the friction plate 11. It is defined that when the detection ray of the infrared distance sensor 32 hits the outer arc edge of the friction plate 11 and is blocked by the arc edge, it is the measurement origin, and the measurement distance at this time is A. The infrared distance sensor 32 detects the distance from the friction plate 11. If the measured distance is A, it means that the friction plate 11 is not worn out. If the measured distance is greater than A, it means that the friction plate 11 is worn, which is used to warn that the friction plate 11 has been worn. Then, the linear motor 31 drives the infrared distance sensor 32 to move in the direction of the return spring 7. It moves one point at a time and the infrared distance sensor 32 measures the distance from the friction plate 11 again. If the distance is still greater than A, it continues to move until the measured distance is equal to A. At this time, the moving distance of the wear detection component 3 represents the wear degree of the friction plate 11. It can not only detect whether the friction plate 11 is worn, but also measure the wear state of the friction plate 11 and display it on the instrument panel.

[0039] A control system for an integrated electric brake device includes a control end and four execution ends, and the control end communicates with the four execution ends respectively. When the brake pedal is stepped on, the pressure sensor is compressed, the control end detects the compression signal of the pressure transmitter, sends a signal to the execution end, and the execution end controls the electric brake component to brake.

[0040] It is used with one control end equipped with four execution ends. The four execution ends operate simultaneously and independently, avoiding the situation in the traditional hydraulic braking system where the whole vehicle cannot brake when one brake fails. Moreover, for electric drive braking, it can be realized and controlled only by the speed control motor 42. It has a short braking distance and fast response speed. At the same time, the braking contact surface is large, the friction coefficient increases, and the braking effect is good. In addition, there is no need to install a separate vacuum system and air pumping device, with a simple structure, environmental protection, long service life and low usage cost.

[0041] The control end includes a first processor, a second communication module, a brake signal sending module, a self-check signal sending module and a display module. The brake signal sending module is used to send a brake signal to the execution end when it detects that the pressure sensor is compressed and when the motor vehicle is parked. The self-check signal sending module is used to send a signal to the execution end to detect the wear condition of the friction plate 11. The display module is data-connected to the instrument panel of the wheel.

[0042] The brake signal sending module includes a pressure determination unit and an active trigger unit. The pressure determination unit is used to judge the pressure received by the pressure sensor. The active trigger unit can trigger a brake signal once when the motor vehicle is parked, braking and not starting, and when the manual brake button is triggered. When the motor vehicle is parked, braking and not starting, and when the manual brake button is triggered, the brake signal sending module will send a braking signal to the execution end to achieve the automatic parking effect when the vehicle is not moving, which is beneficial to improving the safety of driving a motor vehicle. The self-check signal sending module includes an active start unit and a timing start unit. The active start unit is controlled by an artificial button for detection. The timing start unit includes detecting the friction plate 11 once each time the motor vehicle starts and shuts down, and can also perform periodic drive detection. Each time the motor vehicle starts and shuts down, the self-built signal sending module sends a wear degree detection signal of the friction plate 11 to the self-check execution module at the execution end, and the wear result of the friction plate 11 is fed back and displayed on the instrument panel, so that the wear degree of the friction plate 11 can be understood more intuitively and in real time, which is convenient for the driver to master the wear degree of the friction plate 11 and improves the safety of driving a motor vehicle.

[0043] The execution end includes a second processor, a second communication module, a brake execution module and a self-check execution module. The brake execution module is used to receive the brake signal sent by the brake signal sending module, and the driving source 4 is used to control the cam block 6 to rotate to control the friction plate 11 to brake. The self-check execution module is used to receive the self-check signal sent by the self-check signal sending module and control the wear detection component 3 to start detecting the wear of the friction plate 11.

[0044] The brake execution module includes a motor adjustment unit, which is used to adjust the speed and torque of the speed control motor 42 during operation. When the brake execution module performs braking, the motor adjustment unit can set the torque and speed of the speed control motor 42 so that the speed control motor 42 operates according to the setting.

[0045] During use, when the foot steps on the brake pedal and compresses the pressure sensor, the pressure judgment unit obtains the pressure received by the pressure sensor and synchronously sends brake information to the four execution ends. The brake execution module controls the drive source 4 to drive the cam block 6 to rotate, so that the friction plate 11 is braked.

[0046] The braking process is as follows:

[0047] The output shaft of the reducer 43 is driven to rotate by the speed control motor 42, and the linkage shaft 45 is driven to rotate through the transmission component 44, so as to realize the rotation of the cam block 6 driven by the speed control motor 42. When the cam block 6 rotates counterclockwise, since both sides of the cam block 6 respectively abut against the opposite surfaces of the two side connection blocks 5, under the action of the abutment between the side connection block 5 and the cam block 6, the two-sided brake shoes 10 rotate around the rotating shaft 9, and the friction plate 11 is moved away from the return spring 7 and braked. When the two-sided friction plates 11 move, the return spring 7 will also be stretched. When the cam block 6 rotates clockwise to reset, the outward abutment against the two-sided side connection blocks 5 will be released, and under the elastic reset action of the return spring 7, the two-sided friction plates 11 will reset and the braking state will be released.

[0048] The detection process of the wear degree of the friction plate 11 by the wear detection component 3 is as follows:

[0049] The linear motor 31 drives the infrared distance sensor 32 to move, and the infrared distance sensor 32 is moved to the measurement origin. The infrared distance sensor 32 detects the distance from the friction plate 11. If the measured distance is A, it means that the friction plate 11 is not worn out. If the measured distance is greater than A, it means that the friction plate 11 is worn, which is used to warn that the friction plate 11 has been worn. Then, the linear motor 31 drives the infrared distance sensor 32 to move in the direction of the return spring 7, moving point by point. Each time it moves one point position and the infrared distance sensor 32 measures the distance from the friction plate 11 again. If the distance is still greater than A, it continues to move until the measured distance is equal to A. At this time, the moving distance of the wear detection component 3 represents the wear degree of the friction plate 11. It can not only detect whether the friction plate 11 is worn, but also measure the wear state of the friction plate 11 and display it on the dashboard.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. An integrated electric braking device, characterized in that: It includes a brake pedal, a pressure sensor installed on the brake pedal, and an electric brake assembly, and the brake pedal controls the start and stop of the electric brake assembly; The electric brake assembly includes a brake base plate (1), a brake drum (2) is installed on one end face of the brake base plate (1), brake shoes (10) are rotatably installed on both sides of the brake base plate (1) close to one end face of the brake drum (2), friction plates (11) are installed on the outer sides of the two brake shoes (10), U-shaped buckles (12) are welded between the opposite faces of the two brake shoes (10), a return spring (7) is installed between the two U-shaped buckles (12), side connecting blocks (5) are installed at the opposite ends of the two brake shoes (10), a cam block (6) is rotatably installed at one end of the brake base plate (1) close to the brake drum (2) and between the two side connecting blocks (5), and a driving source (4) for driving the cam block (6) to rotate is installed on the top of the brake drum (2).

2. The integrated electric brake device according to claim 1, characterized in that: Rotating shafts (9) are rotatably installed on both sides of one end of the brake base plate (1) close to the brake drum (2) through bearings, and the brake shoes (10) are rotatably installed on the rotating shafts (9), two connecting blocks (8) are rotatably installed between the two rotating shafts (9), and the brake shoes (10) are located between the two connecting blocks (8).

3. The integrated electric brake device according to claim 2, wherein: The driving source (4) includes a cushion seat (41) installed on the top of the brake drum (2) and a linkage shaft (45) rotatably installed on the brake base plate (1) through a bearing, and the cam block (6) is fixed to one end of the linkage shaft (45), a speed reducer (43) is installed on the top of the cushion seat (41), the input end of the speed reducer (43) is fixedly connected to the driving end of a speed regulating motor (42), and a transmission component (44) is installed between the output end of the speed reducer (43) and the other end of the linkage shaft (45).

4. An integrated electric braking device according to claim 3, characterized in that: Wear detection components (3) are installed on both sides of one end of the brake base plate (1) close to the brake drum (2), and the two wear detection components (3) on both sides respectively correspond to the two friction plates (11) on both sides.

5. An integrated electric braking device according to claim 4, characterized in that: The wear detection component (3) includes a linear motor (31) installed on the brake base plate (1), an infrared distance sensor (32) is fixedly installed at the movable end of the linear motor (31), and the distance measuring end of the infrared distance sensor (32) faces the outer arc edge of the friction plate (11). It is defined that when the detection ray of the infrared distance sensor (32) is shot at the outer arc edge of the friction plate (11) and is blocked by the arc edge, it is the measurement origin, and the measurement distance at this time is A.

6. A control system for an integrated electric brake device, which is applied to an integrated electric brake device as described in claim 5, and is characterized in that: It includes one control end and four execution ends, and one control end communicates with the four execution ends respectively. When the brake pedal is stepped on, the pressure sensor is compressed, the control end detects the compression signal of the pressure transmitter, sends a signal to the execution end, and the execution end controls the electric brake assembly to brake.

7. The control system of an integrated electric brake device according to claim 6, characterized in that: The control end includes a first processor, a second communication module, a brake signal sending module, a self-check signal sending module, and a display module. The brake signal sending module is used to send a brake signal to the execution end when it detects that the pressure sensor is compressed and when the motor vehicle is parked. The self-check signal sending module is used to send a signal to the execution end to detect the wear condition of the friction plate (11). The display module is data-connected to the instrument panel of the wheel.

8. The control system of an integrated electric brake device according to claim 7, characterized in that: The brake signal sending module includes a pressure determination unit and an active trigger unit. The pressure determination unit is used to judge the pressure received by the pressure sensor. The active trigger unit can trigger a brake signal once when the motor vehicle is parked, braking and not starting, and when the brake button is manually triggered. The self-check signal sending module includes an active start unit and a timed start unit. The active start unit is controlled by manual operation of a button for detection. The timed start unit includes detecting the friction plate (11) once each time the motor vehicle starts and shuts down.

9. The control system of an integrated electric brake device according to claim 8, characterized in that: The execution end includes a second processor, a second passage module, a brake execution module, and a self-check execution module. The brake execution module is used to receive the brake signal sent by the brake signal sending module, and controls the cam block (6) to rotate by the drive source (4) to control the friction plate (11) to brake. The self-check execution module is used to receive the self-check signal sent by the self-check signal sending module, and controls the wear detection component (3) to start detecting the wear of the friction plate (11).

10. The control system of an integrated electric brake device according to claim 9, characterized in that: The brake execution module includes a motor adjustment unit, which is used to adjust the rotation speed and torque when the speed control motor (42) is working.

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