Rail Vehicle Emergency Actuator Shield Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing emergency actuation devices for vehicles, particularly rail vehicles, are either complex and expensive due to power requirements or pose risks of injury from destroying protective glass panes, failing to provide a simple and reliable solution for quick and safe access in emergency situations.
Innovation Solution
A compact and reliable emergency actuation device with a shielding mechanism that can be unlocked in a single action, either mechanically or without tools, allowing the actuating element to be operated without destroying the shield, and featuring a locking device that can be easily destroyed or opened using a magnetic element for secure and safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an emergency switch with power supply and electromagnet is used for door unlocking, then the door can be unlocked reliably in emergency situations, but the device becomes complex and expensive due to power supply requirements
Solution Approach 1:
The patent removes the electromagnet and power supply components from the emergency actuation system, extracting the complex powered components while retaining the essential door unlocking function through a purely mechanical linkage between the shield and door mechanism
Solution Approach 2:
The system is segmented into two functional parts: a protective shield that can be opened to access the actuating element, and a mechanical linkage that transfers the actuation force from the handle to the door locking mechanism, eliminating the need for powered components
2Ease of operation
If a glass pane covering the emergency switch is destroyed to actuate the emergency release, then the emergency function can be activated, but the risk of injury increases and the pane requires complex replacement
Solution Approach 1:
The shield transitions from a closed protective state to an open accessible state through a controlled mechanical opening motion, allowing the actuating element to be reached and operated without destroying any protective components
Solution Approach 2:
The movable shield acts as an intermediary between the external environment and the actuating element, providing protection when closed while allowing controlled access when opened, eliminating the need for destructive glass pane removal
3Strength
If the shield is firmly bolted to the vehicle frame, then the shield provides robust protection, but the shield cannot be opened to access the actuating element
Solution Approach 1:
The shield mounting transitions from a static firmly bolted connection to a dynamic removable connection that allows the shield to be opened when needed while maintaining strong protection during normal operation
Solution Approach 2:
The shield assembly is segmented into the shield body and the mounting connection, allowing the shield to be firmly attached during normal operation but easily removed or opened when emergency access is required
Data Source
Figure 1~2
Figure 3~4
AI summary
The device (104) has an actuator (105) provided for a control device (107), and a screen arranged to the actuator. The control device unlocks an entry device (103) i.e. door, during actuation of the actuator from a rest position. A locking device of the screen has a locked condition, in which the screen is locked in the position by the locking device. The locking device is adjustable to an unlocked condition by an associated key element e.g. square socket key. The screen is removed from the actuator for releasing the actuation of the actuator in the unlocked condition.