一种双电机电子机械制动器
By using a dual-cylinder caliper assembly and EMB actuator design with a dual-motor electromechanical brake, the problems of motor heating, insufficient axial height and safety redundancy in the single-motor solution are solved, achieving more uniform friction plate force and backup braking performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI GELUBO IND CO LTD
- Filing Date
- 2025-10-22
- Publication Date
- 2026-07-17
AI Technical Summary
In traditional electromechanical brakes, single-motor solutions suffer from problems such as severe motor overheating, increased axial height, high transmission complexity, and insufficient braking safety redundancy.
It adopts a dual-motor electromechanical brake, which uses a dual-cylinder caliper assembly and two EMB actuators to drive the inner and outer friction plates through two transmission units to achieve uniform force and provide braking force. In case of failure of one motor, the other motor provides backup braking.
Increase clamping force, reduce uneven wear, improve overall vehicle braking safety, and ensure that semi-braking performance can still be provided in the event of a single motor failure.
Smart Images
Figure CN224515739U_ABST
Abstract
Claims
1. A dual-motor electromechanical brake, characterized by: The device includes a dual-cylinder caliper assembly and two EMB actuators. The dual-cylinder caliper assembly includes a bracket, a caliper body slidably mounted on the bracket via a guide pin, a dual-drive assembly mounted on the caliper body, and a friction plate assembly. The input end of the dual-drive assembly is connected to the two EMB actuators respectively, and the output end of the dual-drive assembly is used to drive the friction plate assembly.
2. A dual-motor electromechanical brake according to claim 1, characterized in that: The dual drive assembly includes two drive units, each connected to two EMB actuators. The transmission unit includes a lead screw spline shaft connected to the output spline shaft of the EMB actuator at one end, a planetary roller connected to the other end of the lead screw spline shaft, and a lead screw piston threadedly connected to the planetary roller. The lead screw piston is in contact with the inner friction plate of the friction plate assembly. The outer friction plate assembly of the friction plate assembly is connected to the caliper body via a pawl. The caliper body is connected to the end of the lead screw spline shaft away from the lead screw piston via a thrust bearing.
3. A dual-motor electromechanical brake according to claim 2, characterized in that: The nut pistons of the two-way transmission units are arranged symmetrically about the center of the internal friction plate.
4. A dual-motor electromechanical brake according to claim 2, characterized in that: A pressure sensor is installed between the thrust bearing and the caliper body.
5. A dual-motor electromechanical brake according to claim 2, characterized in that: Both EMB actuators include a housing, a drive motor mounted on the housing, a reduction gear set connected to the output end of the drive motor, and an output spline shaft connected to the output end of the reduction gear set. The drive motor is electrically connected to the automotive electronic control unit via a connector fixed on the housing.
6. A dual-motor electromechanical brake according to claim 2, characterized in that: The bracket has a T-shaped groove, in which an inner friction plate and an outer friction plate are slidably arranged. The inner and outer friction plates are symmetrically distributed on both sides of the brake disc.