Motorcycle active safety braking device, braking method and motorcycle

Abstract

The invention discloses a motorcycle active safety braking device and method and a motorcycle, and relates to the technical field of motorcycles, the active safety braking device is installed on a rear wheel of the motorcycle and used for braking the rear wheel of the motorcycle, and the active safety braking device comprises a caliper body and two braking blocks; the caliper body is mounted on a wheel axle through the mounting plate, the caliper body is movably connected to the mounting plate, the caliper body comprises a containing cavity used for containing a brake disc and a piston cavity, and a movable piston is mounted in the piston cavity; the two brake blocks are arranged in the containing cavity, one brake block can move along with the caliper body, the other brake block is installed at the end of the piston, and a gap used for clamping a brake disc is reserved between the two brake blocks. By means of the arrangement, the motorcycle can be stably braked.

Description

Technical Field

[0001] The present invention relates to the technical field of motorcycles, and in particular to an active safety braking device and a braking method for a motorcycle, and a motorcycle. Background Art

[0002] When riding a motorcycle, drivers may fail to detect obstacles ahead due to various reasons, including obstructed vision, inattention, or inattentive observation of their surroundings. These obstacles may include pedestrians suddenly crossing the road, scattered rocks on the road, or unrepaired potholes. Furthermore, the hysteresis of oil pressure buildup often makes it difficult for the vehicle to slow down immediately. When approaching an obstacle, the driver may quickly and forcefully squeeze the brake handle or step on the brake pedal in an attempt to quickly slow down. This sudden, intense braking force can have a significant impact on both the motorcycle and the driver. The motorcycle's center of gravity shifts forward, making the rear lighter and the front heavier, significantly affecting vehicle stability and potentially causing skidding and swaying. Excessive braking force applied to the front wheel can cause the rear wheel to lift off the ground, increasing the risk of rollover.

[0003] Therefore, how to provide a motorcycle active safety braking device to at least partially solve the above-mentioned drawbacks is a technical problem that those skilled in the art currently need to solve. Summary of the Invention

[0004] The present invention aims to provide an active safety braking device for a motorcycle, which can brake the motorcycle stably.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A motorcycle active safety brake device is installed on the rear wheel of the motorcycle for braking the rear wheel, comprising:

[0007] The caliper body is mounted to the wheel axle via a mounting plate. The caliper body is movably connected to the mounting plate. The caliper body includes a receiving cavity for accommodating the brake disc and a piston cavity. A movable piston is installed in the piston cavity.

[0008] Two brake blocks are arranged in the accommodating cavity, one of which can move with the caliper body, and the other is installed on the end of the piston. A gap is left between the two brake blocks for clamping the brake disc.

[0009] As a preference, it also includes:

[0010] The screw stepper motor is mounted on the caliper body through a motor mounting seat and is located at the end of the piston chamber away from the brake pad;

[0011] The lead screw bearing is mounted on the rotating lead screw of the lead screw stepper motor and is used to convert the rotational motion of the lead screw stepper motor into linear motion;

[0012] The sliding push rod is movably installed in the piston cavity. One side of the sliding push rod is connected to the piston, and the other side is connected to the screw bearing.

[0013] Preferably, a pressure sensor is provided between the sliding push rod and the piston, and the pressure sensor is used to detect the pressure exerted by the sliding on the piston.

[0014] Preferably, the piston cavity is provided with a limiting groove, and the edge of the sliding push rod close to the inner wall of the piston cavity is provided with a limiting protrusion that cooperates with the limiting groove. The limiting groove can limit the stroke of the limiting protrusion to limit the moving range of the sliding push rod.

[0015] Preferably, a bushing is installed between the mounting plate and the wheel axle;

[0016] The mounting plate also limits the movement of the rear disc brake locating post.

[0017] Preferably, the caliper body is movably connected to the mounting plate via a floating pin, and the floating pin is installed in a pin hole on the mounting plate.

[0018] The present invention also provides a braking method applicable to the above-mentioned active safety braking device for motorcycles. The motorcycle further includes a millimeter-wave radar mounted on the front of the motorcycle, an electronic control unit mounted on the vehicle body, a wheel speed sensor mounted on a mounting plate, and a vibration motor mounted on the handlebars. The millimeter-wave radar can detect the distance to an obstacle in front of the motorcycle, the wheel speed sensor is used to detect the speed of the rear wheel, and the electronic control unit is respectively connected to the screw stepper motor, the millimeter-wave radar, the wheel speed sensor, the pressure sensor, and the vibration motor signal. The braking method includes:

[0019] The millimeter-wave radar obtains the actual distance to the obstacle and transmits it to the electronic control unit;

[0020] The electronic control unit obtains the wheel speed sensor and calculates the minimum braking distance based on the wheel speed detected by the wheel speed sensor and the preset deceleration;

[0021] The electronic control unit determines whether the minimum braking distance is greater than the actual distance. If so, it controls the vibration motor to operate and activates the safety braking device.

[0022] Preferably, when the safety brake device is working, the electronic control unit determines whether the motorcycle reaches a preset deceleration based on the pressure detected by the pressure sensor. If it is less than, the screw stepper motor is controlled to push the sliding push rod toward the brake pad; if it is greater, the screw stepper motor is controlled to push the sliding push rod toward the brake pad.

[0023] Preferably, when the actual distance is less than the preset emergency distance, the electronic control unit controls the screw stepper motor to push the sliding push rod toward the brake block at maximum power.

[0024] The present invention also provides a motorcycle, comprising the motorcycle active safety braking device as described above.

[0025] Compared with the above-mentioned background technology, the present invention provides an active safety brake device for motorcycles, which is installed on the rear wheel of a motorcycle for braking the same. The active safety brake device includes: a caliper body and two brake pads; the caliper body is installed on the wheel axle through a mounting plate, and the caliper body is movably connected to the mounting plate. The caliper body includes a receiving cavity for accommodating a brake disc and a piston cavity, and a movable piston is installed in the piston cavity; the two brake pads are arranged in the receiving cavity, one of which can move with the caliper body, and the other is installed on the end of the piston, and a gap is left between the two brake pads for clamping the brake disc.

[0026] Specifically, the active safety brake device is generally installed at the wheel axle of the rear wheel, wherein the caliper body is movably mounted on the mounting plate, and the mounting plate is mounted on the wheel axle, wherein the moving direction of the caliper body is parallel to the wheel axle; two brake pads are arranged in the accommodating cavity of the caliper body, and when the caliper body is installed and not started, the two brake pads are exactly located on both sides of the brake disc, and there is a gap between them; the brake pad located on the inner side of the brake disc, that is, the caliper side brake pad, can move together with the caliper body, and the other brake pad is installed at the end of the piston, that is, the piston side brake pad, It can move closer to or away from the brake disc with the piston; the piston is installed in the piston chamber of the caliper body, and the piston chamber is located on the outside of the caliper body. The piston installed inside it can move axially along the wheel axle; when the active safety braking device starts working, the piston will move toward the direction close to the brake disc until the brake pad connected to it abuts against the brake disc. At this time, the caliper body will be subjected to a reaction force and move along the axis of the wheel axle as a whole in the direction away from the movement of the piston, which will drive the other brake pad to approach the brake disc as well, so that the two brake pads can clamp the brake disc at the same time, thereby achieving the purpose of braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0028] Figure 1A schematic structural diagram of an active safety braking device provided in an embodiment of the present invention;

[0029] Figure 2 for Figure 1 sectional view of

[0030] Figure 3 A schematic diagram of the installation structure of the active safety braking device provided in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the installation positions of the millimeter-wave radar and vibration motor provided in an embodiment of the present invention.

[0032] in:

[0033] 01-active safety braking device, 02-wheel axle, 03-brake disc;

[0034] 100-caliper body, 110-accommodation chamber, 120-piston chamber, 121-piston, 122-limiting groove, 130-bushing, 140-rear disc brake positioning column;

[0035] 200-mounting plate, 210-floating pin;

[0036] 300-brake pads;

[0037] 400-screw stepper motor, 410-motor mounting base, 420-screw bearing, 430-rotating screw;

[0038] 500-sliding push rod, 510-limiting protrusion;

[0039] 600-pressure sensor;

[0040] 700-millimeter wave radar;

[0041] 800-wheel speed sensor;

[0042] 900-Vibration motor. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0045] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left" and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limitations of the present invention.

[0046] The present invention aims to provide an active safety braking device for a motorcycle, which can brake the motorcycle stably.

[0047] To achieve the above objectives, the present invention provides the following technical solutions:

[0048] See also Figures 1 to 4 The present embodiment provides an active safety brake device 01 for a motorcycle, which is installed on the rear wheel of a motorcycle for braking the rear wheel. The active safety brake device 01 includes: a caliper body 100 and two brake pads 300; the caliper body 100 is installed on the wheel axle 02 through a mounting plate 200, and the caliper body 100 is movably connected to the mounting plate 200. The caliper body 100 includes an accommodating cavity 110 for accommodating a brake disc 03 and a piston cavity 120, and a movable piston 121 is installed in the piston cavity 120; the two brake pads 300 are arranged in the accommodating cavity 110, one of the brake pads 300 can move with the caliper body 100, and the other brake pad 300 is installed at the end of the piston 121, and a gap is left between the two brake pads 300 for clamping the brake disc 03.

[0049] Specifically, the active safety brake device 01 is generally installed at the wheel axle 02 of the rear wheel, wherein the caliper body 100 is movably installed on the mounting plate 200, and the mounting plate 200 can be directly installed on the wheel axle 02, and the mounting plate 200 can fix other components on the body structure of the motorcycle. It should be noted that the moving direction of the caliper body 100 is parallel to the wheel axle 02; two brake blocks 300 are arranged in the accommodating cavity 110 of the caliper body 100, and when the caliper body 100 is installed and not started, the two brake blocks 300 are located on both sides of the brake disc 03, and leave a gap with it, which also That is to say, the brake disc 03 is also located in the accommodating chamber 110 and in the gap between the two brake blocks 300. When the motorcycle is running normally, the brake block 300 has no effect on the brake disc 03. The brake block 300 located on the inner side of the brake disc 03 of the two brake blocks 300, that is, the caliper finger side brake block 300, can move together with the caliper body 100, while the other brake block 300, that is, the piston side brake block 300, is installed at the end of the piston 121 and can move closer to or away from the brake disc 03 with the piston 121. That is to say, the caliper finger side brake block 300 on the side of the accommodating chamber 110 away from the piston chamber 120 can move with The caliper moves outward, while the other piston-side brake pad 300 can move inward with the piston 121; in this embodiment, the piston 121 is installed in the piston cavity 120 of the caliper body 100, and the piston cavity 120 can be a cylindrical cavity with an axis parallel to the wheel shaft 02. The piston cavity 120 is located on the outside of the caliper body 100, and the piston 121 installed therein can move axially along the wheel shaft 02; wherein, the power for the movement of the piston 121 can be adjusted according to the situation, that is, a motor or a hydraulic cylinder can be installed on the outside of the piston cavity 120 to provide the power for the movement of the piston 121; when the active safety braking device 01 When starting to work, the piston 121 will move toward the direction close to the brake disc 03 until the brake pad 300 connected to it abuts against the brake disc 03. At this time, the piston 121 and the brake pad 300 connected to it will not be able to move forward any further, but the piston 121 will continue to apply force to the brake disc 03. In this way, the caliper body 100 will be subjected to a reaction force and move as a whole along the axis of the wheel axle 02 in the direction away from the movement of the piston 121. This will drive the other brake pad 300 to also approach the brake disc 03. In this way, the two brake pads 300 can clamp the brake disc 03 at the same time, thereby achieving the purpose of stable braking.

[0050] Preferably, the active safety braking device 01 also includes: a screw stepper motor 400, a screw bearing 420 and a sliding push rod 500; the screw stepper motor 400 is arranged on the caliper body 100 through the motor mounting seat 410, and is located at the end of the piston chamber 120 away from the brake block 300; the screw bearing 420 is sleeved on the rotating screw 430 of the screw stepper motor 400, and is used to convert the rotational motion of the screw stepper motor 400 into linear motion; the sliding push rod 500 is movably installed in the piston chamber 120, and one side of the sliding push rod 500 is connected to the piston 121, and the other side is connected to the screw bearing 420.

[0051] In this embodiment, the power for the movement of the piston 121 comes from the screw stepper motor 400, which is fixed to the outside of the caliper body 100 through the motor mounting base 410. The middle rotating shaft of the screw stepper motor 400 is a rotating screw 430 with a thread. The rotating screw 430 is matched with a screw bearing 420. The screw bearing 420 is a screw nut, which can convert the rotational motion of the rotating screw 430 into the linear motion of the screw bearing 420. At the same time, a sliding push rod 500 is mounted on the screw bearing 420. In this way, when the screw stepper motor 400 starts working, the sliding push rod 500 can be controlled to push the piston 121 closer to or away from the brake disc 03.

[0052] Preferably, a pressure sensor 600 is provided between the sliding push rod 500 and the piston 121 , and the pressure sensor 600 is used to detect the pressure exerted on the piston 121 by the sliding.

[0053] Furthermore, in order to be able to quickly and accurately adjust the braking force, a pressure sensor 600 is provided between the sliding push rod 500 and the piston 121 in this embodiment. The pressure sensor 600 will continuously collect the extrusion pressure data generated by the piston 121 and the sliding push rod 500, and at the same time adjust the working state of the screw stepper motor 400 in combination with the current vehicle speed conditions and the distance to the obstacle and other information to adjust the braking force on the brake disc 03, so that the motorcycle can be braked stably to achieve the best braking effect.

[0054] Preferably, the piston chamber 120 is provided with a limiting groove 122, and the edge of the sliding push rod 500 close to the inner wall of the piston chamber 120 is provided with a limiting protrusion 510 that cooperates with the limiting groove 122. The limiting groove 122 can limit the stroke of the limiting protrusion 510 to limit the moving range of the sliding push rod 500.

[0055] It can be understood that in order to prevent the sliding push rod 500 from exceeding the stroke range when moving in the piston cavity 120, causing the brake block 300 to collide with other components, a limiting groove 122 of a certain length is provided on the inner wall of the piston cavity 120, and correspondingly, a limiting protrusion 510 is provided at the corresponding position of the sliding push rod 500. The limiting protrusion 510 is exactly located in the limiting groove 122 and moves. Figure 2 As shown, the limiting groove 122 cooperates with the motor mounting seat 410 installed at its right end to limit the moving range of the sliding push rod 500, thereby limiting the moving range of the brake block 300. In addition, the cooperation between the limiting protrusion 510 and the limiting groove 122 is also the key to converting rotational motion into linear motion.

[0056] Preferably, a bushing 130 is installed between the mounting plate 200 and the wheel axle 02 ; the movement of the mounting plate 200 is also restricted by the rear disc brake positioning column 140 .

[0057] In this embodiment, in order to be able to install the active safety brake device 01 more stably, a bushing 130 is provided between the mounting plate 200 and the wheel axle 02. The provision of the bushing 130 can make the mounting plate 200 less likely to cause relative movement between the active safety brake device 01 and the body structure of the motorcycle due to vibration, thereby ensuring that the position of the caliper body 100 remains unchanged, and preventing the brake block 300 from rubbing against the brake disc 03 due to movement of the caliper body 100; further, the bushing 130 is installed in the mounting hole at one end of the mounting plate 200, and the bushing 130 cooperates with the rear wheel axle 02, while the other end cooperates with the rear disc brake positioning column 140 through a groove, and the rear disc brake positioning column 140 is connected to the body structure of the motorcycle, so that the relative position relationship of the mounting plate 200 can be stably limited.

[0058] Preferably, the caliper body 100 is movably connected to the mounting plate 200 via a floating pin 210 , and the floating pin 210 is installed in a pin hole on the mounting plate 200 .

[0059] Specific as Figure 3 As shown, sleeves are provided at the front and rear ends of the caliper body 100, and a floating pin 210 can be passed through the sleeve, and the floating pin 210 is installed on the mounting plate 200. It should be noted that the sleeve can move along the floating pin 210, so that the caliper body 100 can be moved, and then the brake disc 03 can be braked.

[0060] The present invention also provides a braking method applicable to the above-mentioned motorcycle active safety braking device 01. The motorcycle further includes a millimeter-wave radar 700 mounted on the front of the motorcycle, an electronic control unit mounted on the vehicle body, a wheel speed sensor mounted on the mounting plate 200, and a vibration motor 900 mounted on the handlebar. The millimeter-wave radar 700 can detect the distance to obstacles in front of the motorcycle, and the wheel speed sensor is used to detect the speed of the rear wheel. The electronic control unit is respectively connected to the screw stepper motor 400, the millimeter-wave radar 700, the wheel speed sensor, the pressure sensor 600, and the vibration motor 900 for signal transmission. The braking method includes:

[0061] The millimeter-wave radar 700 obtains the actual distance to the obstacle and transmits it to the electronic control unit;

[0062] The electronic control unit obtains the wheel speed sensor and calculates the minimum braking distance based on the wheel speed detected by the wheel speed sensor and the preset deceleration;

[0063] The electronic control unit determines whether the minimum braking distance is greater than the actual distance. If so, the electronic control unit controls the vibration motor 900 to operate and activates the safety braking device.

[0064] Specifically, in order to be able to brake the motorcycle more stably, a millimeter-wave radar 700 is also installed at the front of the motorcycle in this embodiment. The millimeter-wave radar 700 is based on the Doppler principle and can accurately measure the target's movement speed relative to the radar through the frequency difference between the transmitted and reflected signals, and further realize multi-target tracking through a multi-target detection and tracking algorithm; further, in this embodiment, a 4D millimeter-wave radar 700 is preferred. Compared with traditional radars, the 4D millimeter-wave radar 700 has added pitch angle measurement information, and the angular resolution can reach sub-degree level. It can clearly present the outline of the target obstacle by outputting a large number of measurement points, and can detect, distinguish, and track multiple stationary and moving targets at a distance of up to 300 meters. Therefore, this embodiment installs the radar at the front of the vehicle so that it can detect no obstructions in front, so that it can better perform its detection function and serve as an environmental information perception source.

[0065] In general, after the millimeter-wave radar 700 detects target information input, it inputs the target information into the electronic control unit through CAN communication. When the safety distance is too short, it will pose a threat to the driver's driving safety. A braking command should be issued immediately and the electronic control signal should be transmitted to the active safety braking device 01, which then performs the corresponding braking action.

[0066] Among them, after receiving the target information detected by the electronic control unit, the electronic control unit will calculate the minimum safety distance and compare this distance with the actual distance detected by the millimeter wave radar 700 to determine whether it is safe.

[0067] As you can understand, since the electronic control unit takes time to receive, calculate, and transmit signals, it incorporates the reaction distance when calculating the minimum safe distance. This refers to the distance the motorcycle travels between the time the system detects danger and the time it initiates braking. This system response time varies depending on the vehicle model, but is typically 0.3-0.5 seconds (slightly longer than a car). Furthermore, if the vehicle ahead brakes, the minimum safe distance deducts the distance the vehicle travels during the braking process.

[0068] In summary, the minimum safe distance is S=v*t+(v 2 ) / (2a)-(v0 2 ) / (2a o ); where S is the minimum safe distance (meters); v is the speed of the motorcycle detected by the wheel speed sensor (km / h); t is the system response time (seconds); a is the deceleration rate used by the motorcycle according to the distance to the target (m / s 2 v0 is the target speed detected by the millimeter wave radar 700 (km / h); a o is the target deceleration detected by the millimeter wave radar 700 (m / s 2 ); wherein, a can be obtained based on the value detected by the pressure sensor 600.

[0069] It should be noted that, taking into account the road adhesion coefficient correction α, load correction β, and tilt angle correction γ, the comprehensive correction is S`=S*α*β*γ, and the braking trigger distance is adjusted according to the real-time calculation of S` (when the millimeter wave measures a roll angle greater than 15°, the braking force is limited to avoid loss of control).

[0070] Preferably, the preset deceleration is in inverse proportion to the actual distance.

[0071] In this embodiment, the closer the distance to the target, the greater the deceleration of the motorcycle during braking. Specifically, the braking pressure increases in a square relationship as the actual distance decreases. That is, the preset deceleration is inversely proportional to the actual distance, which can ensure smooth deceleration.

[0072] Preferably, when the safety brake device is working, the electronic control unit determines whether the motorcycle reaches the preset deceleration based on the pressure detected by the pressure sensor 600. If it is less than, the screw stepper motor 400 is controlled to push the sliding push rod 500 toward the brake block 300; if it is greater than, the screw stepper motor 400 is controlled to push the sliding push rod 500 toward the brake block 300.

[0073] In this embodiment, when the safety braking device is working, the electronic control unit can use the pressure sensor 600 to continuously collect the extrusion pressure data generated between the piston 121 and the sliding push rod 500, and at the same time combine the current vehicle speed conditions and obstacle distance information to achieve accurate detection and control of the braking force, which helps to ensure that the system can quickly and accurately adjust the braking force as needed, thereby achieving the best braking effect.

[0074] Furthermore, when the actual distance is less than the preset emergency distance, the electronic control unit controls the screw stepper motor 400 to push the sliding push rod 500 toward the brake block 300 at maximum power.

[0075] In this embodiment, when the actual distance is less than the preset emergency distance, such as when the distance is extremely close (less than 1m), the full braking pressure is directly triggered. At this time, the screw stepper motor 400 will start with the maximum power and brake at the fastest speed to avoid collision. When the actual distance returns to above the safety threshold, the braking pressure is completely released. At the same time, the hysteresis design is also taken into consideration to avoid frequent braking near the threshold to improve system stability.

[0076] In summary, the braking method provided by the present invention uses a millimeter-wave radar 700 mounted on the front of the motorcycle to detect obstacles ahead in real time, transmitting this information to the electronic control unit for obstacle identification and distance calibration. When the electronic control unit calculates that the motorcycle may collide with the obstacle ahead, but the actual distance is not less than the minimum safe distance, the vibration motor 900 is energized, allowing the driver to instantly sense the vibration information and apply braking measures in a timely manner. If the distance is too close, that is, if the actual distance is less than the minimum safe distance, active braking is automatically initiated, and then the safety brake device is controlled to operate and apply braking. In this way, this braking method, combined with an obstacle detection algorithm, improves the driver's emergency response capabilities and safety through early warning (vibration motor 900), rapid response, intelligent decision-making, and precise braking, thereby enhancing driving safety compared to traditional motorcycles.

[0077] The present invention also provides a motorcycle, comprising the above-described active safety brake device for motorcycles, so that the motorcycle also has the beneficial effects of the above-described active safety brake device for motorcycles.

[0078] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0079] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0080] The embodiments provided by the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be noted that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A motorcycle active safety brake device (01), mounted on the rear wheel of a motorcycle for braking the rear wheel, characterized in that: include: A caliper body (100) is mounted to a wheel axle (02) via a mounting plate (200), the caliper body (100) being movably connected to the mounting plate (200), the caliper body (100) comprising a housing chamber (110) for accommodating a brake disc (03) and a piston chamber (120), a movable piston (121) being mounted in the piston chamber (120); Two brake blocks (300) are arranged in the accommodating cavity (110), wherein one brake block (300) can move with the caliper body (100), and the other brake block (300) is installed on the end of the piston (121), and a gap is left between the two brake blocks (300) for clamping the brake disc (03).

2. The motorcycle active safety braking device (01) according to claim 1, characterized in that: Also includes: a screw stepping motor (400) disposed on the caliper body (100) via a motor mounting seat (410) and located at an end of the piston chamber (120) facing away from the brake block (300); A screw bearing (420) is sleeved on the rotating screw (430) of the screw stepping motor (400) and is used to convert the rotational motion of the screw stepping motor (400) into linear motion; A sliding push rod (500) is movably mounted in the piston chamber (120), with one side of the sliding push rod (500) connected to the piston (121) and the other side connected to the screw bearing (420).

3. The motorcycle active safety braking device (01) according to claim 2, characterized in that: A pressure sensor (600) is provided between the sliding push rod (500) and the piston (121), and the pressure sensor (600) is used to detect the pressure applied by the sliding push rod to the piston (121).

4. The motorcycle active safety braking device (01) according to claim 3, characterized in that: The piston cavity (120) is provided with a limiting groove (122), and the edge of the sliding push rod (500) close to the inner wall of the piston cavity (120) is provided with a limiting protrusion (510) that cooperates with the limiting groove (122). The limiting groove (122) can limit the stroke of the limiting protrusion (510) to limit the moving range of the sliding push rod (500).

5. The motorcycle active safety braking device (01) according to claim 1, characterized in that: A bushing (130) is installed between the mounting plate (200) and the wheel axle (02); The movement of the mounting plate (200) is also restricted by the rear disc brake positioning column (140).

6. The motorcycle active safety braking device (01) according to claim 1, characterized in that: The caliper body (100) is movably connected to the mounting plate (200) via a floating pin (210), and the floating pin (210) is installed in a pin hole on the mounting plate (200).

7. A braking method, applicable to the active safety braking device (01) of a motorcycle according to any one of claims 3 to 6, wherein the motorcycle further comprises a millimeter-wave radar (700) mounted on the front of the motorcycle, an electronic control unit mounted on the vehicle body, a wheel speed sensor mounted on the mounting plate (200), and a vibration motor (900) mounted on the handlebar, wherein the millimeter-wave radar (700) is capable of detecting the distance of an obstacle in front of the front of the motorcycle, the wheel speed sensor is used to detect the speed of the rear wheel, and the electronic control unit is signal-connected to the screw stepper motor (400), the millimeter-wave radar (700), the wheel speed sensor, the pressure sensor (600), and the vibration motor (900), respectively, and wherein: The braking method comprises: The millimeter wave radar (700) obtains the actual distance to the obstacle and transmits it to the electronic control unit; The electronic control unit obtains the wheel speed sensor and calculates the minimum braking distance according to the wheel speed detected by the wheel speed sensor and a preset deceleration; The electronic control unit determines whether the minimum braking distance is greater than the actual distance, and if so, controls the vibration motor (900) to operate and activates the safety braking device.

8. The braking method according to claim 7, characterized in that: When the safety brake device is in operation, the electronic control unit determines whether the motorcycle reaches a preset deceleration based on the pressure detected by the pressure sensor (600); if the deceleration is less than the preset deceleration, the electronic control unit controls the screw stepper motor (400) to push the sliding push rod (500) in a direction close to the brake block (300); and if the deceleration is greater than the preset deceleration, the electronic control unit controls the screw stepper motor (400) to push the sliding push rod (500) in a direction away from the brake block (300).

9. The braking method according to claim 8, characterized in that: When the actual distance is less than the preset emergency distance, the electronic control unit controls the screw stepping motor (400) to push the sliding push rod (500) toward the brake block (300) at maximum power.

10. A motorcycle, characterized in that: The invention comprises the motorcycle active safety braking device (01) as claimed in any one of claims 1 to 6.

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