Filter Fixing Device with Pivoting Push Rod for Easy Replacement
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Solution Overview
Problem
Existing filter fixing devices for air conditioning units either lack sufficient holding force to meet filtering performance requirements or are inconvenient to operate, making filter replacement time-consuming.
Innovation Solution
A filter fixing device with a lock mounting piece, hold-down piece, push rod, and connecting rods that allow for relative movement, providing a strong holding force while being easy to remove, utilizing a sliding slot and block mechanism for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a simple structure filter fixing device is used, then the device is easy to manufacture, but the holding force is insufficient
Solution Approach 1:
The patent employs dynamic elements including a push rod that can pivot and connecting rods that enable relative motion between the hold-down piece and lock mounting piece. This dynamic structure allows the device to transform small input forces into large holding forces through mechanical advantage, achieving strong filter retention without requiring a complex rigid structure
Solution Approach 2:
The filter fixing device is divided into multiple functional components: hold-down piece, lock mounting piece, push rod, and connecting rods. Each segment performs a specific function and can be manufactured independently, simplifying production while the coordinated action of these segments generates the required holding force
2Strength
If a filter fixing device with strong holding force is used, then the filtering performance requirement is met, but the device is inconvenient to operate
Solution Approach 1:
The dynamic push rod mechanism allows the user to easily release the filter by simply pushing the rod, which pivots to disengage the lock. The connecting rods automatically translate this small input motion into the release of the hold-down piece, making operation convenient while maintaining strong holding force during normal use
Solution Approach 2:
The connecting rod mechanism automatically translates the push rod's motion into the corresponding movement of the hold-down piece and lock mounting piece. The system self-regulates the force distribution and motion coordination, requiring minimal user effort to achieve filter release while maintaining secure holding during operation
3Strength
If a filter fixing device with strong holding force is used, then the filtering performance requirement is met, but the filter replacement is time-consuming
Solution Approach 1:
The dynamic mechanism with pivoting push rod and connecting rods enables rapid filter replacement. The mechanical advantage provided by the connecting rods allows the hold-down piece to be quickly released with minimal input motion, significantly reducing the time required for filter replacement while maintaining strong holding force when installed
Solution Approach 2:
The lock mounting piece with lock and the hold-down piece are pre-configured in specific positions and orientations. The connecting rods are pre-set to provide the correct mechanical advantage ratio, so that when the user pushes the push rod, the filter is immediately and quickly released without requiring complex manual manipulation
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 device securely holds the filter in place while allowing for easy replacement, meeting filtering performance requirements and simplifying the filter replacement process.
Implementation Method 1
a push rod, connected to the hold-down piece and which can pivotally rotate around an axis; and at least one connecting rod, wherein the at least one connecting rod is pivotally connected to the push rod and the lock mounting piece; wherein the filter fixing device is configured in such a way that the rotation of the push rod relative to the hold-down piece may cause relative motion of the hold-down piece and the lock mounting piece in the first direction
Implementation Method 2
the connecting part for the hold-down piece is provided with a sliding slot positioned along the first direction, the hold-down piece is provided with a sliding block positioned along the first direction, and the lock mounting piece and the hold-down piece can move relative to each other through the sliding slot and the sliding block
Data Source
AI summary
The present application provides a filter fixing device, comprising: a lock mounting piece, a hold-down piece, a push rod and at least one connecting rod. The lock mounting piece is provided with a lock used for engaging the lock receiving part on the filter fixing frame; the hold-down piece and the lock mounting piece are connected to each other in such a way that they can move relative to each other in a first direction, and the hold-down piece is used to hold down the filter; the push rod is connected to the hold-down piece and can pivotally rotate around an axis; at least one connecting rod is pivotally connected to the push rod and the lock mounting piece; the filter fixing device is configured in such a way that the rotation of the push rod relative to the hold-down piece may cause relative motion of the hold-down piece and the lock mounting piece in the first direction. The filter fixing device provided by the present application has a simple structure, is easy to operate, and can firmly hold the filter so that it is possible to easily replace the filter while meeting the requirement on the filtering performance of the air conditioning unit.