Brake Actuator Gear Assembly for Compact Low-Noise Torque Transmission
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Solution Overview
Problem
Existing brake actuators for vehicles suffer from complex gear structures, leading to increased weight, noise, and reduced efficiency, as well as inferior assembly and price competitiveness.
Innovation Solution
An actuator design incorporating a planetary gear assembly as the first reduction gear unit and a bevel gear assembly as the second reduction gear unit, along with a housing and bracket configuration to minimize complexity and enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional gear structure is used for power transmission, then the actuator can transmit rotational force, but the structure becomes complicated and weight increases
Solution Approach 1:
The patent combines the first reduction gear unit and second reduction gear unit into a compact integrated arrangement where the planetary gear assembly and bevel gear assembly share common components and mounting structures. This merging reduces the overall number of separate parts and simplifies the gear transmission structure while maintaining the required torque multiplication and directional change functions.
2Power
If multiple gear devices are used to increase torque, then power transmission is achieved, but the number of connecting parts increases and friction losses increase
Solution Approach 1:
The planetary gear assembly and bevel gear assembly are integrated with shared mounting structures and minimized connecting parts. The carrier of the planetary gear directly interfaces with the bevel gear input, reducing the number of intermediate connectors and minimizing cumulative friction losses while achieving the required torque multiplication for the parking brake application.
3Volume of moving object
If a compact design is implemented, then the actuator size is reduced, but assembly difficulty may increase
Solution Approach 1:
The actuator is divided into modular segments including the motor assembly, planetary gear unit, bevel gear unit, and output mechanism. Each segment can be independently manufactured and tested, then assembled together using standardized interfaces. This segmentation maintains compact overall dimensions while facilitating easier manufacturing and assembly processes.
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
The design achieves a compact, lightweight actuator with reduced noise and improved efficiency, offering a simple gear connection structure.
Implementation Method 1
the first reduction gear unit is provided as a planetary gear assembly
Implementation Method 2
decelerates power generated from a motor while increasing torque by using a plurality of gear devices
Implementation Method 3
the second reduction gear unit is provided as a bevel gear assembly
Data Source
AI summary
Disclosed is an actuator for a brake device. In accordance with an aspect of the disclosure an actuator for a brake device includes a motor; a first reduction gear unit connected to the motor; and a second reduction gear unit connected to the first reduction gear unit; wherein the first reduction gear unit is provided as a planetary gear assembly, and the second reduction gear unit is provided as a bevel gear assembly.