Filter Cartridge Locking Mechanism for Quick Replacement
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Solution Overview
Problem
Conventional filter assemblies for water purifiers require excessive time and pose difficulties for inexperienced users to replace filter cartridges due to complex alignment procedures.
Innovation Solution
A filter assembly with a circular cap featuring step-formed fastening holes, locking parts with inclined surfaces, and an elastic member for easy locking and separation, allowing quick and intuitive replacement of filter cartridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the support plate of the filter cartridge is aligned with the slide passage of the circular cap by rotating and adjusting the filter cartridge in several directions, then the filter cartridge can be correctly mounted, but the time required to replace the filter cartridge is significantly increased
Solution Approach 1:
The locking part is pre-positioned in the circular cap at a location that corresponds to the insertion position of the filter cartridge. This preliminary positioning eliminates the need for users to rotate and adjust the filter cartridge in several directions during installation, as the locking part automatically guides and secures the filter cartridge at the correct position.
2Manufacturing precision
If the support plate of the filter cartridge is aligned with the slide passage of the circular cap through multiple-directional rotation and adjustment, then correct alignment is achieved, but inexperienced users have difficulty replacing the filter cartridge
Solution Approach 1:
The locking part automatically performs the alignment and securing functions that previously required manual adjustment and rotation. The locking part is designed to self-align with the filter cartridge insertion position and self-secure the filter cartridge in place, eliminating the need for user expertise in multi-directional alignment.
3Ease of operation
If a simple filter cartridge insertion mechanism is used, then replacement is easy and quick, but the filter cartridge may not be securely locked in place
Solution Approach 1:
The locking part is designed with a dynamic locking mechanism that engages automatically when the filter cartridge is inserted. The locking part moves from an unlocked state during insertion to a locked state when the filter cartridge is properly positioned, providing both ease of installation and secure locking without requiring complex user actions.
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
Significantly reduces the time required to replace filter cartridges and enables even inexperienced users to perform the task easily by providing a secure yet easily removable mechanism.
Implementation Method 1
an elastic member provided to surround the circular cap and the locking part and elastically supporting the locking part to the corresponding first fastening hole
Data Source
AI summary
Disclosed herein is a filter assembly for water purifiers. The filter assembly includes a head having an inlet duct, a control valve, and an outlet duct. A circular cap is provided on the lower portion of the head, and has cylindrical space. A filter cap is mounted to the circular cap. A filter cartridge has a filtering part which is provided with a filter to purify water. A plurality of fastening holes is formed in the outer circumference of the circular cap, and has a step. Locking parts are disposed in the fastening holes to lock the filter cartridge. An elastic member surrounds the circular cap and the outer surfaces of the supports parts, thus elastically supporting the locking parts to the fastening holes. The filter cap has on the outer circumference of the upper portion thereof a plurality of fastening holes into which the locking parts are fitted.