Check Valve Mounting Structure With Rotational Locking
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Solution Overview
Problem
Existing check valve mounting technologies, such as those using thread connections or retaining grooves and snap-in plates, are prone to loosening or disconnection under external forces and fail drop tests due to instability.
Innovation Solution
A check valve mounting structure comprising a seat plate, a tubular bottom fitting, and a holder block with interlocking features like notches, lugs, and channels that provide a double engagement mechanism for secure fixation, preventing accidental disconnection and ensuring stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If thread connection is used to mount the check valve, then the installation is simple, but the connection can be loosened by external forces causing falling or displacement
Solution Approach 1:
The mounting structure is divided into multiple components: seat plate with mounting hole, tubular bottom fitting with lugs, and holder block with channels and protruding portions. This segmentation allows each component to perform a specific function while working together to achieve both easy installation and reliable fixation.
Solution Approach 2:
The tubular bottom fitting is inserted into the seat plate's mounting hole, and the holder block is then inserted onto the tubular bottom fitting. This nested arrangement creates a layered engagement system where the protruding portions of the holder block engage with the lugs of the tubular bottom fitting, providing secure fixation while maintaining installation simplicity.
2Reliability
If retaining groove and snap-in plate are used, then the fixation is initially secure, but the structure can be forced off upon impact and fails drop tests
Solution Approach 1:
The mounting structure incorporates a rotation mechanism where the holder block can rotate relative to the tubular bottom fitting. The lugs move from first channels to second channels through rotation, creating a dynamic locking system that adapts to applied forces and prevents disconnection under impact conditions.
Solution Approach 2:
The structure changes its engagement parameters through rotation. The relative position between lugs and channels changes from an initial engagement state to a locked state, altering the mechanical parameters of the connection to provide both initial security and impact resistance.
3Reliability
If a double engagement mechanism is implemented, then the fixation effect is robust and drop tests are passed, but the device complexity increases
Solution Approach 1:
Multiple engagement features are merged into a single integrated mounting structure. The seat plate, tubular bottom fitting, and holder block work together as one system, where the lugs and channels provide both engagement and locking functions simultaneously, achieving robust fixation without proportionally increasing complexity.
Solution Approach 2:
The lugs serve multiple functions: they provide initial engagement guidance, mechanical interlocking through channel insertion, and rotational locking when moving from first to second channels. This multi-functionality reduces the need for separate components, maintaining relatively simple structure while achieving reliable double engagement.
Data Source
AI summary
A check valve mounting structure includes a seat plate including a mounting hole and linked notches, a tubular bottom fitting with the top end thereof aimed at the mounting hole and having lugs extended from the periphery, and a holder block including a top receptacle, a shoulder and a bottom receptacle, which includes protruding portions outwardly extended from the periphery, first channels upwardly extended from the bottom side to a predetermined distance and second channels respectively and horizontally extended from the top ends of the first channels toward the periphery thereof. The bottom receptacle is attached onto the tubular bottom fitting, allowing the protruding portions to pass through the notches. The lugs are respectively inserted into the first channels and the second channels.