Foldable Rack Lock Catch Assembly to Prevent Rod Bending
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Solution Overview
Problem
The stability of existing foldable racks is poor due to a complicated connection relationship at the top of the supporting rod, which leads to bending under stress, causing the lock buckle to loosen and allowing the plates to fold accidentally, compromising the rack's functionality.
Innovation Solution
A foldable rack design featuring a lock catch assembly with a slider, driving arm, upper lock catch, and a lock hook piece, where the lock hook piece is separated from the supporting rod and integrated with the connecting pieces, preventing the supporting rod from bending and improving stability by simplifying the locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lock hook piece is disposed on the top of the supporting rod, then the lock catch can buckle with the lock hook piece to prevent folding, but the connection relationship becomes too complicated and the supporting rod bends easily under pulling force
Solution Approach 1:
The patent divides the locking system into separate components: the lock hook piece is separated from the supporting rod and integrated with the connecting pieces instead. This segmentation allows the supporting rod to focus on its primary load-bearing function while the locking mechanism operates independently through the interaction between the lock catch and lock hook piece, resolving the contradiction between locking reliability and rod strength.
Solution Approach 2:
The lock hook piece is extracted from the supporting rod structure and repositioned on the connecting pieces. This extraction eliminates the complicated connection relationship at the top of the supporting rod, allowing the rod to maintain its structural integrity and resist bending under pulling force while the locking function is preserved through the separate lock catch and lock hook piece interaction.
2Reliability
If the top of the supporting rod serves as both connecting part and installation part, then the locking function is achieved, but the connection relationship is too complicated to easily lock the rotating pin
Solution Approach 1:
The patent segments the functional responsibilities: the top of the supporting rod is dedicated to connecting the rotating pin, while the lock hook piece is relocated to the connecting pieces for the locking function. This clear separation simplifies the connection relationship at the rod top and makes the locking operation more straightforward and easier to perform.
Solution Approach 2:
The locking function is extracted from the supporting rod top and relocated to the connecting pieces where the lock hook piece interacts with the lock catch. This extraction simplifies the connection relationship at the rod top, making it easier to lock the rotating pin without the complexity of dual functions at the same location.
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 enhances the stability of the foldable rack by preventing accidental folding and maintaining the plates in a flattened state, ensuring the rack remains stable during use and transportation.
Implementation Method 1
the slider is matched and sleeved on the supporting rod, a left end and a right end of the slider are respectively pivotally connected with one of slider supporting rods; one end of each slider supporting rod distal from the slider is pivotally connected with a corresponding pillar, one end of the driving arm is pivotally connected with the slider
Implementation Method 2
a right end of the first layer plate is pivotally connected with corresponding pillars, a left end of the second layer plate is pivotally connected with corresponding pillars; the supporting rod is connected with the first connecting piece and the second connecting piece through a pin shaft
Data Source
AI summary
The present disclosure provides a foldable rack, each of foldable plates of the foldable rack includes a first layer plate and a second layer plate, a first connecting piece is connected to a left end of the first layer plate, a second connecting piece is connected to a right end of the second layer plate, a supporting rod is connected with the first connecting piece and the second connecting piece through a pin shaft, a lock catch assembly includes a slider, a driving arm, an upper lock catch, and a lock hook piece, the slider is matched and sleeved on the supporting rod, a left end and a right end of the slider are respectively pivotally connected with one of slider supporting rods, the lock hook piece is separated from the supporting rod and is disposed on the first connecting piece or the second connecting piece.