CN-224211049-U - Electromechanical brake, braking system and vehicle

CN224211049UCN 224211049 UCN224211049 UCN 224211049UCN-224211049-U

Abstract

The application discloses an electromechanical brake, a braking system and a vehicle, the electromechanical brake comprises an assembly shell, a motor, a speed-reducing and torque-increasing mechanism and a brake actuating mechanism. The motor is arranged in the assembly shell. The speed-reducing and torque-increasing mechanism is arranged in the assembly shell and is in transmission connection with the output end of the motor. The brake actuating mechanism is arranged in the assembly shell and is in transmission connection with the speed-reducing torque-increasing mechanism so as to execute a service brake action, a service release action, a parking brake action or a parking release action according to the transmission movement of the speed-reducing torque-increasing mechanism. According to the application, the braking and releasing in the driving process and the braking and releasing in the parking process are integrated into one braking executing mechanism, so that the four states of driving braking, driving releasing, parking braking and parking releasing of the vehicle are controlled by one braking executing mechanism, the integral structure of the electromechanical brake is simplified, the number of internal mechanisms is reduced, the structural compactness of the interior of the electromechanical brake is improved, and the light-weight requirement of the whole vehicle is met.

Inventors

CHEN ZAN
WANG JIALIANG
WEI HAIZHOU
SHAN DONGSHENG

Assignees

宁波赛福汽车制动有限公司

Dates

Publication Date: 20260508
Application Date: 20250612

Claims (10)

1. An electromechanical brake is provided, which comprises a brake pad, characterized by comprising the following steps: Assembling a shell; The motor is arranged in the assembly shell; the speed-reducing and torque-increasing mechanism is arranged in the assembly shell and is in transmission connection with the output end of the motor; The brake actuating mechanism is arranged in the assembly shell and is in transmission connection with the speed-reducing torque-increasing mechanism so as to execute a service brake action, a service release action, a parking brake action or a parking release action according to the transmission movement of the speed-reducing torque-increasing mechanism.
2. The electromechanical brake according to claim 1, wherein the brake actuating mechanism comprises a service brake assembly and a parking brake assembly, the service brake assembly is in transmission connection with the speed and torque increasing mechanism to perform the service brake action or the service release action according to the transmission movement of the speed and torque increasing mechanism, and the parking brake assembly is arranged on one side of the service brake assembly and is used for blocking or avoiding the movement of the service brake assembly so that the brake actuating mechanism performs the parking brake action or the parking release action.
3. The electromechanical brake according to claim 2, wherein the service brake assembly includes a screw disposed within the mounting housing and in driving connection with the speed reducing and torque increasing mechanism, and a nut in threaded connection with the screw such that the nut is movable in an axial direction of the screw.
4. The electromechanical brake according to claim 2, wherein the parking brake assembly includes an electromagnetic actuator, a ratchet, a pawl, a transmission gear, a gear shaft and a support column, the transmission gear and the ratchet are both coaxially sleeved on the gear shaft, the transmission gear is in transmission engagement with the speed-reducing and torque-increasing mechanism, an output end of the electromagnetic actuator is connected with one end of the pawl, one end of the pawl away from the electromagnetic actuator is rotatably sleeved on the support column, and an output end of the electromagnetic actuator is used for driving the pawl to perform rotational movement around the support column so as to enable the pawl to be away from or close to the ratchet; When the brake actuating mechanism executes the parking brake action, the pawl is clamped with the ratchet wheel to limit the ratchet wheel to rotate, and when the brake actuating mechanism executes the parking release action, the pawl and the ratchet wheel are arranged at intervals.
5. The electromechanical brake according to any one of claims 1 to 4, wherein the deceleration and torque-increasing mechanism includes a deceleration assembly and a torque-increasing assembly, the deceleration assembly is in driving connection with an output end of the motor and provided to the brake actuator, and the torque-increasing assembly is provided to the brake actuator and in driving connection with the deceleration assembly, and is configured to drive the brake actuator to perform a service braking action or a service releasing action.
6. The electromechanical brake of claim 5, wherein the deceleration assembly includes a motor gear and a sun gear, the motor gear is disposed on the output end of the motor, the sun gear is engaged with the motor gear, and the sun gear is disposed on the brake actuator and is in driving connection with the torque up assembly.
7. The electromechanical brake of claim 6, wherein the sun gear includes a first gear portion and a second gear portion, the first gear portion and the second gear portion are coaxially connected and are both sleeved on the brake actuator, the first gear portion is in gear engagement with the motor, and the second gear portion is in driving connection with the torque up assembly.
8. The electromechanical brake of claim 7, wherein the torque up assembly includes a carrier disposed within the housing, a ring gear and a plurality of planet gears, the carrier including a carrier body and a plurality of axle bodies, the plurality of axle bodies being disposed at intervals on one side of the carrier body, the carrier body being disposed in a manner to be in driving engagement with the brake actuator, the plurality of planet gears being disposed in a manner to be respectively in a manner to be in rotational engagement with the plurality of axle bodies, and the plurality of planet gears being in gear engagement with each other about the second gear portion, the ring gear being secured within the housing and surrounding the plurality of planet gears, an inner side of the ring gear being in gear engagement with the plurality of planet gears.
9. A brake system comprising a brake module and an electromechanical brake according to any one of claims 1 to 8, the brake module comprising a brake pad and a bracket, the brake pad being provided on one side of the electromechanical brake.
10. A vehicle comprising a brake system according to claim 9.

Description

Electromechanical brake, braking system and vehicle Technical Field The application relates to the technical field of vehicle braking, in particular to an electromechanical brake, a braking system and a vehicle. Background With the development of electric and intelligent automobiles, the brake-by-wire system is gradually replacing the traditional hydraulic braking system due to the advantages of high response speed, high control precision, easiness in integrating an advanced driving auxiliary system (ADVANCED DRIVER-ASSISTANCE SYSTEMS, ADAS) and energy recovery and the like. An electromechanical brake (Electro-MECHANICAL BRAKE, EMB) is used as a key execution part of the brake-by-wire system and is directly responsible for converting an electric control signal into a mechanical clamping force to act on a brake disc so as to realize the deceleration and stop of the vehicle. In the prior art, various EMB designs have been proposed. Typical EMBs generally include motors, speed and torque reducing mechanisms, motion translating mechanisms, and caliper body structures. The rotation torque output by the motor is amplified by the speed reducing mechanism and then converted into linear thrust by the motion converting mechanism, and the brake disc is pushed to clamp the brake disc to realize service braking. However, for modern vehicles, integrating a reliable parking brake (electronic hand brake) function is an indispensable requirement for EMB. The prior art generally faces the following challenges when implementing the park function: To add parking lock functionality, it is often necessary to add an additional set of independent parking actuators (e.g., additional motors, worm gears, cables, or caliper integrated locking devices) to or on the EMB body structure. The addition design obviously increases the whole volume and the axial/radial dimension of the brake, so that the structure of the brake is not compact enough, the difficulty in arrangement in a small hub space of a vehicle is increased, and the brake is not beneficial to the weight reduction and the space optimization of the whole vehicle. Disclosure of utility model The embodiment of the application provides an electromechanical brake, a braking system and a vehicle, which are used for solving the problems that the overall size of the brake is obviously increased and the weight of the whole vehicle and the space optimization are not facilitated because the parking braking and the service braking of the existing vehicle are respectively realized through two sets of different braking mechanisms. In a first aspect, an embodiment of the present application provides an electromechanical brake, a braking system, and a vehicle, including: Assembling a shell; The motor is arranged in the assembly shell; the speed-reducing and torque-increasing mechanism is arranged in the assembly shell and is in transmission connection with the output end of the motor; The brake actuating mechanism is arranged in the assembly shell and is in transmission connection with the speed-reducing torque-increasing mechanism so as to execute a service brake action, a service release action, a parking brake action or a parking release action according to the transmission movement of the speed-reducing torque-increasing mechanism. In some embodiments of the present application, the brake actuating mechanism includes a service brake component and a parking brake component, where the service brake component is in transmission connection with the speed-reducing and torque-increasing mechanism to execute the service brake action or the service release action according to the transmission movement of the speed-reducing and torque-increasing mechanism, and the parking brake component is disposed on one side of the service brake component and is used to block or avoid the movement of the service brake component, so that the brake actuating mechanism executes the parking brake action or the parking release action. In some embodiments of the present application, the service brake assembly includes a screw disposed within the assembly housing and in driving connection with the speed and torque reducing mechanism, and a nut in threaded connection with the screw such that the nut is movable in an axial direction of the screw. In some embodiments of the present application, the parking brake assembly includes an electromagnetic actuator, a ratchet, a pawl, a transmission gear, a gear shaft and a support column, where the transmission gear and the ratchet are both coaxially sleeved on the gear shaft, the transmission gear is in transmission engagement with the speed-reducing and torque-increasing mechanism, an output end of the electromagnetic actuator is connected with one end of the pawl, one end of the pawl far away from the electromagnetic actuator is rotatably sleeved on the support column, and an output end of the electromagnetic actuator is used to drive the pawl to make a rotary motion around