Communication Board Backflow Plate Geometry for Slot Sealing
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Solution Overview
Problem
The operation of backflow prevention plates in communication boards is affected by back-flowing air forces, leading to increased backflow prevention gaps and reduced heat dissipation performance, necessitating complex and inefficient adjustments to resist the air force and maintain smooth operation.
Innovation Solution
A communication board design featuring a backflow prevention plate that rotates at an acute angle to the housing, allowing it to open against the air flow direction, decoupling the rotatable connection structure from air force resistance and enabling smooth operation without enlarging gaps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the backflow prevention plate is designed to rotate against the air flow direction at an acute angle, then the sealing effectiveness is improved and backflow prevention is enhanced, but the rotatable connection structure must generate sufficient resistance to air force which increases device complexity
Solution Approach 1:
The patent converts the harmful back-flowing air force into a beneficial sealing mechanism. By positioning the backflow prevention plate at an acute angle against the air flow direction, the air pressure that would normally cause leakage is transformed into a force that pushes the plate tighter against the sealing surface, thereby enhancing sealing effectiveness while utilizing the existing air flow rather than resisting it entirely
Solution Approach 2:
The backflow prevention plate is designed with rotatable connection that allows it to dynamically adjust its position in response to varying air flow conditions. The plate can rotate to optimize its sealing angle based on the actual air flow force, providing adaptive sealing performance across different operating conditions rather than relying on a fixed rigid structure
2Reliability
If the rotatable connection structure generates higher resistance to air force, then backflow prevention is improved, but the friction force between components increases which reduces operational smoothness
Solution Approach 1:
The backflow prevention plate is pre-positioned at an acute angle relative to the housing before air flow occurs. This preliminary positioning ensures that when back-flowing air is generated, the plate is already oriented to effectively utilize the air pressure for sealing, eliminating the need for high resistance during operation and maintaining smooth rotational movement
Solution Approach 2:
The patent balances the air force acting on the backflow prevention plate by designing the rotatable connection structure with appropriate friction characteristics. The structure provides sufficient resistance to maintain sealing under normal conditions but allows smooth rotation when triggered, creating a balanced system where sealing force and operational smoothness are both satisfied
3Device complexity
If the backflow prevention plate is positioned to face the top portion of the housing, then the structure is simplified, but back-flowing air generates pressure that causes the plate to rotate in the closed direction creating backflow prevention gaps
Solution Approach 1:
The backflow prevention plate is positioned asymmetrically at an acute angle relative to the housing rather than symmetrically facing the top portion. This asymmetric positioning creates an optimized sealing geometry where the plate's leading edge effectively blocks back-flowing air while the angled configuration allows the plate to remain stable under air pressure, preventing unwanted rotation and maintaining consistent sealing performance
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 design ensures effective sealing of vacant slots, minimizing backflow and maintaining heat dissipation performance by preventing backflow through acute-angle rotation, thus enhancing the applicability and smoothness of the communication board operation.
Implementation Method 1
back-flowing air flows from a bottom portion to a top portion of the housing. The back-flowing air generates pressure on the backflow prevention plate
Data Source
AI summary
A communication board for a communication device includes a first trigger component mounted in a communication board housing. During insertion and removal of the communication board in a slot of the communication device, the first trigger component can move relative to the housing, and a transmission component can move relative to the housing when driven by the first trigger component. A backflow prevention plate positioned on an outer side of the housing can rotate relative to the housing when driven by the transmission component. When the backflow prevention plate is in an open state, the backflow prevention plate is open relative to a side wall of the housing, and an included angle between the backflow prevention plate and the side wall of the housing is an acute angle at which an opening faces a bottom portion of the housing.