Armored Vehicle Door Braking Mechanism for Secure Closure
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Solution Overview
Problem
The existing braking device for vehicle doors in armored vehicles requires continuous actuation to prevent unwanted movement, leading to difficulties in closing the door as users tend to release the handle during the final movement, resulting in the braking device preventing the door from fully closing.
Innovation Solution
A braking device with a gas pressure spring and a brake release device that automatically reduces the braking effect in the last movement section of the door's closure, allowing the door to close under its own momentum by using a telescopic linkage and switching element that only engages in the final angular range of 0° to 45°, particularly 0° to 30°, to facilitate easy closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the braking device is continuously actuated to prevent unwanted door movement, then the door security and stability are improved, but the ease of closing the door deteriorates because users tend to release the handle during final movement
Solution Approach 1:
The door movement is segmented into two distinct phases: a first movement section where the braking device is actively engaged to prevent unwanted movement, and a second movement section where the braking device is automatically released to facilitate easy closing. This segmentation allows the system to optimize for both security and ease of operation at different stages of the same operational cycle.
Solution Approach 2:
The braking device is pre-configured to automatically release in the second movement section before the door completes its closing motion. This preliminary action of releasing the brake ensures that the door can close smoothly without requiring continuous user actuation, while maintaining security during the critical earlier phases of movement.
2Stability of the object's composition
If the braking effect is maintained throughout the entire door movement, then the door stability is improved, but the productivity of door operation deteriorates due to required continuous actuation
Solution Approach 1:
The braking device transitions from a static, continuously engaged state to a dynamic system that automatically adjusts its braking effect based on the door's position and movement phase. The device is designed to provide strong braking during the first movement section for stability, then automatically reduce or release the braking effect in the second movement section to enable efficient closing without continuous user input.
3Reliability
If the door handle must be held throughout the entire closing movement, then the door security is maintained, but the ease of operation worsens due to the continuous effort required
Solution Approach 1:
The braking device is designed to automatically release itself in the second movement section without requiring continuous user actuation. This self-service mechanism maintains security during the critical phases of door movement while automatically facilitating the final closing action, thereby improving ease of operation without compromising overall door security.
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 the vehicle door to close automatically or with minimal effort in the last movement section, ensuring the door can be securely shut without continuous actuation, enhancing user convenience and operational simplicity.
Implementation Method 1
The braking device can include a gas pressure spring, which can be pressurized for release via a release element arranged on the gas pressure spring.
Implementation Method 2
The brake release device can also include a telescopic linkage which is connected to the switching element at one end section for articulating the switching element and which can be connected to the vehicle at the other end section, in particular via a rotary bearing.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The vehicle door has a brake mechanism and a moving section which extends from a closing position over an angular area of 0 degree to 45 degree, particularly from 0 degree to 30 degree. The brake mechanism comprises a pneumatic spring (3) which is aerated by a releasing element in a releasing manner. The brake mechanism is released manually by an actuator (2,21,22,23,24,26) for releasing the vehicle door.