Filter Element Assembly With Twist-Lock Release for Easier Maintenance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing filter element groups face difficulties in simplified assembly and maintenance, particularly due to high holding forces in safety devices like clip connections and bayonet locks, which can lead to increased resistance and complexity during the replacement of working filter elements over time, especially when dirt accumulates.
Innovation Solution
The design incorporates a securing device with axial through-openings and protruding projections on the cover disk and second outer end disk, allowing for a positive fit that secures against twisting and axial removal, along with adjustable securing elements and holders for easy transition between secured and unlocked positions, facilitating assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high holding forces are used in clip connections or bayonet locks to prevent automatic twisting during operation, then reliability is improved, but ease of operation deteriorates due to increased resistance during assembly and disassembly
Solution Approach 1:
The securing element is designed to be movable between a securing position and an unlocking position, allowing the connection mechanism to dynamically transition between locked and unlocked states. This enables easy disassembly when needed while maintaining reliable locking during operation.
Solution Approach 2:
The holding force parameter is made variable through the movable securing element. When the securing element is in the securing position, high holding forces are generated to prevent automatic twisting. When moved to the unlocking position, the holding force is reduced or eliminated, enabling easy disassembly.
2Reliability
If high holding forces are used in safety devices to prevent automatic twisting, then reliability is improved, but device complexity increases due to additional resistance from dirt accumulation
Solution Approach 1:
The securing element is extracted as a separate, movable component from the fixed connection structure. This allows the securing function to be separated from the connection geometry, enabling the securing element to be moved to an unlocking position that eliminates resistance to twisting, even when dirt is present.
Solution Approach 2:
The movable securing element provides dynamic control over the connection state. During operation, it maintains reliable locking. During maintenance, it can be moved to the unlocking position to reduce resistance, making disassembly easier even when dirt has accumulated between surfaces.
3Reliability
If a fixed securing mechanism like clip connection or bayonet lock is used, then reliability is improved, but ease of manufacture deteriorates due to difficulty in assembly and disassembly
Solution Approach 1:
The securing element is designed to be movable between securing and unlocking positions. This dynamic capability allows the filter element group to be easily assembled and disassembled during maintenance while maintaining reliable securing during normal operation, significantly improving ease of manufacture and maintenance.
Solution Approach 2:
The holding force parameter is made variable through the movable securing element. In the securing position, high holding forces prevent axial removal. In the unlocking position, holding forces are reduced, enabling easy assembly and disassembly operations.
Data Source
Figure 1~2
Figure 1
Figure 3
AI summary
The invention relates to a filter element group (1) for a filter device for filtering a fluid, comprising a working filter element (2), a protective filter element (3), a mounting device (4) and a locking device (5), wherein the protective filter element (3) can be inserted into and removed from the working filter interior (9) by means of the mounting device (4) through a mounting opening (22) of the working filter element (2), wherein the locking device (5) is adjustable between a locking state in which a cover disc (23) of the mounting device (4) is secured against axial removal (11) on an outer end disc (8) of the working filter element (2), and an unlocked state in which the cover disc (23) can be axially removed from said outer end disc (8).Assembly and disassembly can be simplified if the locking device (5) in the locked state secures the cover disc (23) to said outer end disc (8) against rotation in the circumferential direction (10).