Swivel-Joint Removal Tool for Liquid Filter Insert Extraction
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Solution Overview
Problem
Existing disassembly tools for liquid filter inserts are either specific to each filter design or diameter, requiring custom tools and risking damage to the filter element during removal due to instability and misalignment issues, especially with manufacturing tolerances and adhesive materials.
Innovation Solution
A disassembly tool with two arms connected by a swivel joint, allowing adjustable hook distance for secure engagement behind the end cap edges, ensuring stable extraction without mechanical contact with the filter element, suitable for various filter inserts and diameters, and manufactured simply and inexpensively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a one-piece disassembly tool is used, then the structure is simple and manufacturing is easy, but the tool cannot accommodate different filter designs and diameters
Solution Approach 1:
The disassembly tool is divided into two separate arms instead of being a one-piece structure. Each arm can independently adjust its position and orientation, allowing the tool to adapt to different filter insert diameters and designs while maintaining simple manufacturing processes for each individual arm
Solution Approach 2:
The two arms are connected by a swivel joint that allows relative rotation between the arms. This dynamic connection enables the tool to adjust its configuration to match different filter insert sizes and geometries, providing versatility without requiring completely different tools for each application
2Ease of operation
If the disassembly tool is made flexible or elastic to accommodate manufacturing tolerances, then insertion is easier, but stability during pull-out is reduced
Solution Approach 1:
The tool consists of two separate rigid arms connected by a swivel joint, allowing each arm to maintain structural stability while the joint provides the necessary flexibility for insertion
Solution Approach 2:
The relative angle between the two arms can be adjusted via the swivel joint to optimize both insertion ease and pull-out stability. The arms can be positioned at different angles depending on the specific filter insert being removed, adapting the tool's geometry to each situation
3Reliability
If custom disassembly tools are designed for each filter insert diameter, then precision and reliability are improved, but device complexity and production costs increase
Solution Approach 1:
The two-arm disassembly tool with a swivel joint can be used for removing filter inserts of various diameters and designs by adjusting the arm positions and relative angles. This single universal tool replaces the need for multiple custom-designed tools, reducing device complexity and production costs while maintaining reliable removal
Solution Approach 2:
The dynamic swivel joint connection allows the tool to adapt its geometry to match different filter insert specifications, providing the precision and reliability of custom tools without requiring separate custom tools for each application
Data Source
Figure 1a~1c
Figure 1d~1e
Figure 2a
AI summary
The invention relates to a removal tool (1) for a filter insert (70) of a liquid filter (90). The removal tool (1) according to the invention comprises a first arm (10) having a first outer side (13), wherein the first outer side (13) extends along a first axis (A1). The removal tool furthermore comprises a second arm (20) having a second outer side (23), wherein the second outer side (23) extends along a second axis (A2). The first arm (10) has a first hook (11), which protrudes substantially transverse to the first axis (A1) of the first arm (10). The second arm (20) has a second hook (21), which protrudes substantially transverse to the second axis (A2) of the second arm (20). According to the invention, the first outer side (13) and the second outer side (23) are connected to each other by means of a swivel joint (30, 32) having a joint axis (A3).