Movable Strike Plate for RF Door Gasket Compression
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Solution Overview
Problem
Conventional doors designed to prevent environmental radio frequency interference require significant force to compress gaskets adequately, often necessitating slamming and are not effectively latched or unlatched due to the high closing force needed.
Innovation Solution
A door closing mechanism that moves a strike plate relative to the door frame to provide sufficient closing force for gasket compression, incorporating a retractable latch and latch release mechanism to manage the door's position and attenuate electromagnetic interference between the door and frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a thick gasket is installed to improve radio frequency attenuation, then the radio frequency seal is enhanced, but the closing force required to compress the gasket increases significantly
Solution Approach 1:
The strike plate is made movable relative to the door frame, allowing it to dynamically adjust its position to apply concentrated closing force to the gasket. This dynamic mechanism enables the system to achieve sufficient gasket compression without requiring excessive overall closing force on the door
Solution Approach 2:
The system changes the distribution and concentration of closing force by moving the strike plate to optimal positions. By adjusting the location and concentration of force application, the system achieves effective gasket compression with reduced total force requirements
2Object-affected harmful factors
If sufficient closing force is applied to compress the gasket, then the radio frequency seal is achieved, but the door requires slamming to generate enough force
Solution Approach 1:
The movable strike plate acts as an intermediary mechanism that translates moderate door closing forces into concentrated compression force on the gasket. This mediator enables effective sealing without requiring the door to be slammed shut
Solution Approach 2:
The dynamic positioning of the strike plate allows the system to efficiently transfer and concentrate closing forces, enabling gentle door closure while still achieving sufficient gasket compression for effective radio frequency sealing
3Ease of operation
If a movable strike plate is implemented to reduce closing force requirements, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The movable strike plate introduces minimal dynamic complexity to the door mechanism. The simplicity of allowing the strike plate to move relative to the door frame provides significant operational ease while adding only a small increase in mechanical complexity
Solution Approach 2:
The system achieves improved ease of operation through parameter changes in the strike plate positioning mechanism. The relatively simple adjustment of strike plate location and movement capability delivers substantial benefits in door closing ease with limited increase in overall system complexity
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
The mechanism ensures effective attenuation of electromagnetic interference by compressing the gasket between 30% and 50% while allowing for easy latching and unlatching, overcoming the high force requirements of conventional systems without manual slamming.
Implementation Method 1
The gasket is made from a material adapted to attenuate radio frequency when compressed between the door and the door frame
Data Source
AI summary
A door and door frame assembly having a door closing mechanism adapted to provide sufficient closing force to the door so that the door engages and sufficiently compresses a gasket between the door and the door frame to prevent electromagnetic interference, such as environmental radio frequencies, from passing between the door and door frame. The door closing mechanism moves a strike plate relative to the door frame to close the door once it is latched to the strike plate. The strike plate is moveable between an extended position and a retracted position relative to the door frame. In the extended position, the gasket is not sufficiently compressed between the door and door frame even though the door is latched. In the retracted position, the gasket is sufficiently compressed between the door and the door frame to attenuate the passage of electromagnetic interference between the door and door frame.