Electromechanical Brake Booster Counter-Rotating Worm Gears
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electromechanical brake boosters face challenges in efficiently distributing load and achieving symmetrical design, leading to increased material costs and potential structural imbalances.
Innovation Solution
The use of a transmission system with a rotation/translation conversion gear, including a combination of worm gears and rack and pinion gears, which distributes the load over multiple paths, allowing for symmetrical output and reduced load on individual components, enabling the use of plastic materials and improving torque distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single transmission path is used in electromechanical brake boosters, then the structure is simpler, but the load on individual components increases and symmetrical design is difficult to achieve
Solution Approach 1:
The transmission system is divided into multiple independent transmission paths (at least two) that parallelly transmit torque from the electric motor to the output. Each transmission path contains its own rotation/translation conversion gear, creating a segmented structure that distributes the total load across multiple paths, thereby reducing the force burden on individual components while maintaining structural complexity at an acceptable level.
2Ease of manufacture
If asymmetric transmission design is used, then the structure is simpler to manufacture, but structural imbalances and increased material costs occur
Solution Approach 1:
The invention employs symmetrical transmission design where at least two transmission paths are arranged symmetrically around the central axis of the electric motor. This symmetrical arrangement ensures balanced force distribution, reduces structural imbalances, and allows for the use of lighter materials compared to asymmetric designs that would require additional reinforcement to compensate for imbalances.
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 solution reduces the load on transmission components, allows for a symmetrical design, and increases the booster force while maintaining a constant motor speed, enabling efficient actuation of the brake system with reduced material costs.
Implementation Method 1
The use of a transmission system with a rotation/translation conversion gear, including a combination of worm gears and rack and pinion gears
Implementation Method 2
distributes the load over multiple paths, allowing for symmetrical output and reduced load on individual components
Implementation Method 3
The use of a transmission system with a rotation/translation conversion gear, including a combination of worm gears and rack and pinion gears
Data Source
AI summary
The invention relates to an electromechanical brake booster (1). The invention proposes to design the brake booster (1) with two counter-rotating worm gears (11, 13) whose axial forces compensate each other. The worm gears (11, 13) drive rack and pinion gears (14, 15) that convert a rotary input motion into a translational output motion for actuating a master brake cylinder. By providing two gear paths, the load on each gear path is halved, and the force input into a booster body (6), which forms a gear output, is symmetrical.