Electromechanical Brake Power Train With Hollow Motor Screw Protection
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Solution Overview
Problem
The existing electromechanical brake systems face inefficiencies in power transmission due to a complex design with multiple components, leading to reduced power transmission efficiency and increased susceptibility to damage from dust and foreign substances in braking environments.
Innovation Solution
The proposed electromechanical brake system incorporates a hollow motor with a Power train that includes a sun gear, planet gear structure, and ring gears, where the nut is coupled to the second ring gear, and the pressing screw is connected via ball-screw-nut coupling, with a guide mechanism to prevent rotation and enhance durability, allowing for efficient power transmission and reduced backlash.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two planet gears and two ring gears are used to transmit power from the motor to the screw, then the power transmission path is established, but the number of components increases and the design becomes complicated
Solution Approach 1:
The patent extracts and removes one planet gear and one ring gear from the traditional planetary gear system, reducing the component count from two planet gears and two ring gears to one planet gear and one ring gear, while maintaining the essential power transmission function
Solution Approach 2:
The patent merges the functions of multiple components into a simplified configuration where a single planet gear engages with both the sun gear and the ring gear, consolidating the power transmission path and reducing overall system complexity
2Power
If a traditional planetary gear structure with multiple components is used, then power transmission is achieved, but the power transmission efficiency deteriorates
Solution Approach 1:
By removing unnecessary gear components (one planet gear and one ring gear), the patent reduces the number of meshing interfaces and friction points, thereby minimizing energy losses and improving overall power transmission efficiency
Solution Approach 2:
The patent optimizes the gear arrangement and engagement configuration in advance to ensure smooth power flow and minimize transmission losses before the system operates
3Force
If a screw structure is used in a braking environment with dust and foreign substances, then the pressing force is generated, but the screw becomes easily damaged
Solution Approach 1:
The patent utilizes the hollow motor structure to create a protective environment that channels and manages dust and foreign substances away from the screw, converting the harmful braking environment into a controlled space where the screw is protected from direct contamination and damage
Solution Approach 2:
The screw is positioned within the hollow motor structure, creating a nested configuration where the motor housing serves as a protective enclosure for the screw, shielding it from external contaminants while allowing it to function
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration improves power transmission efficiency, reduces component complexity, and enhances durability by minimizing damage from environmental factors, while providing precise control over the braking force without a hydraulic line.
Implementation Method 1
a pressing screw coupled to the nut and configured to advance or retreat toward the brake pad
Data Source
AI summary
Provided are an electromechanical brake and a vehicle including the same. An electromechanical brake according to an embodiment of the present disclosure includes a pair of brake pads disposed at two opposite sides of a disc and include a hollow motor configured to provide rotational driving power and having an internal space penetratively formed in a direction in which a rotation axis extends, a nut configured to rotate about the rotation axis of the motor, a Power train coupled to a front side of the motor and configured to transmit the rotational driving power of the motor to the nut, and a pressing screw coupled to the nut and configured to advance or retreat toward the brake pad.