Brake Assist System With Intermediate Spring and Contact Detector
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Solution Overview
Problem
Conventional electromechanical brake-assist systems face safety risks during autonomous operation, as they may cause injury to the driver's foot or damage to system components when encountering obstacles, due to continuous thrust without detection.
Innovation Solution
Incorporating an intermediate spring and compression thrust bearing between the plunger piston and helper piston, with a contact detector connected to the brake system management unit, to limit compression force and detect obstacles, thereby preventing further thrust when a predetermined force is exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If brake assistance is continuous during autonomous operation, then braking effectiveness is improved, but risk of injury to driver's foot or damage to components increases
Solution Approach 1:
The patent introduces an intermediate spring between the plunger piston and helper piston that acts as a cushioning element. When the brake pedal encounters an obstacle during autonomous operation, the spring compresses to absorb excess force, preventing direct transmission of harmful forces to the driver's foot or system components. This beforehand cushioning mechanism allows the system to maintain continuous braking assistance while protecting against potential injuries or damage.
2Extent of automation
If the plunger piston advances continuously to pull the brake pedal, then autonomous braking function is improved, but detection of obstacles becomes difficult
Solution Approach 1:
The patent incorporates a contact detector that monitors the position and movement of the plunger piston relative to the helper piston. When the intermediate spring is fully compressed or when abnormal resistance is detected, the contact detector sends feedback signals to the brake system management unit. This feedback mechanism enables the system to detect obstacles during autonomous operation and adjust or terminate braking assistance accordingly, maintaining automation while enabling obstacle detection.
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
Enhances safety by preventing accidents and component damage by detecting and correcting obstacles during autonomous braking, ensuring the brake assist system operates safely even when the pedal is blocked.
Implementation Method 1
an intermediate spring combined with a compression thrust bearing, limiting the compression of the spring to a predetermined compressive force
Implementation Method 2
an intermediate spring combined with a compression thrust bearing, limiting the compression of the spring to a predetermined compressive force
Data Source
AI summary
A brake assist system comprising an intermediate spring combined with a compression thrust bearing, limiting the compression to a force greater than the response of the brake pedal under normal operating conditions. The spring and its compression thrust bearing are placed between the plunger piston (2) and the helper piston so that the spring transmits the thrust from the helper piston to the plunger piston that pulls the pedal under normal braking conditions. The helper piston pushes the plunger piston by way of the compression thrust bearing when the response of the plunger piston exceeds the compression threshold. A contact detector detects the contact between the helper piston and the thrust bearing.