Electromechanical Brake Release via External Shaft Lock Access
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Solution Overview
Problem
Electromechanical brake systems require a solution for emergency brake release due to their complexity, especially when brakes remain applied and cannot be released in normal operation, making vehicles untowable.
Innovation Solution
A brake system with a rotatable shaft, coupling means, and tool receptacles allowing external manual operation using first and second tool elements to engage and disengage the locking element, enabling the brake to be released or locked, utilizing a spring mechanism or permanent magnet for assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electromechanical brake actuators are used with complex coupling means and locking elements, then braking reliability is improved, but emergency release capability deteriorates
Solution Approach 1:
A tool receptacle is introduced as an intermediary interface between the external environment and the internal locking mechanism. This receptacle accepts a release tool that can mechanically interact with the locking element through the receptacle opening, enabling external operators to disengage the locking element and rotate the shaft without compromising the sealed design or requiring disassembly of the actuator housing.
Solution Approach 2:
The coupling means is segmented into distinct functional components: a locking element that can be independently actuated, a shaft that can be independently rotated, and a receptacle that provides independent access. This segmentation allows the locking function and rotation function to be controlled separately - the locking element can be disengaged through the receptacle while the shaft rotation is controlled through normal operation or alternative access.
2Manufacturing precision
If the brake system is designed with sealed housing and integrated components, then manufacturing precision is improved, but ease of repair deteriorates
Solution Approach 1:
The tool receptacle serves as a mediator that provides access to internal components (shaft and locking element) without requiring housing disassembly. The receptacle is integrated into the sealed housing structure, maintaining manufacturing precision while creating a controlled access path for maintenance operations. Tools can be inserted through the receptacle to manipulate internal components without breaking the housing seal.
3Device complexity
If the locking element is integrated with the coupling means, then device complexity is reduced, but ease of operation deteriorates
Solution Approach 1:
The tool receptacle acts as an intermediary that bridges the gap between the external operator and the integrated locking element. By providing a dedicated access path through the receptacle, the system maintains the benefits of integration (reduced overall complexity) while enabling easy manual operation of the locking element when needed for emergency release.
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
Enables external release or locking of the brake system, ensuring the vehicle can be made towable even when brakes are applied and cannot be released normally, by using the described tool elements and mechanisms.
Implementation Method 1
utilizing a spring mechanism or permanent magnet for assistance
Implementation Method 2
utilizing a spring mechanism or permanent magnet for assistance
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The invention related to an electromechanical brake system comprising a brake actuator (2) having a power transmission means for transmitting an actuating force to a brake pad (10b), said power transmission means including a rotatable shaft (81), a coupling means with a locking element (35), wherein the coupling means can be controlled so that the locking element is engaged with the rotatable shaft and blocks its rotation or so that the locking element is disengaged from the rotatable shaft so that the rotatable shaft can be rotated and a first receptacle into which a first tool element (31) can be inserted so that it engages with the rotatable shaft and transmits a rotation on the rotatable shaft. The invention is further related to a method of releasing an electromechanical brake.