Filter Bag Coupling Structure for Quick Dirt Suction Head Removal
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Solution Overview
Problem
The existing dirt suction devices for swimming pools have inconvenient connections between the filter bag and connection pipe, leading to poor aesthetics and difficulty in assembly and disassembly.
Innovation Solution
A structure comprising first and second connection pieces, with the second connection piece detachably connected to the connection pipe and having a holding cavity, and the first connection piece connected to the filter bag, ensuring a hidden connection that facilitates rapid assembly and disassembly while maintaining a smooth external appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the filter bag and connection pipe are directly connected without connection pieces, then the connection structure is simple, but the connection position is exposed resulting in poor aesthetics
Solution Approach 1:
The first connection piece is nested within the second connection piece, with the first connection piece's outer peripheral surface fitting into the holding cavity of the second connection piece. This nested arrangement hides the connection position between the filter bag and connection pipe, achieving smooth external aesthetics while maintaining a relatively simple overall connection structure.
2Reliability
If the filter bag is firmly fixed to the connection pipe, then the connection is stable, but assembly and disassembly become difficult
Solution Approach 1:
The connection structure employs a dynamic fastening mechanism where the first connection piece can be inserted into and removed from the second connection piece. During assembly, the first connection piece is inserted into the holding cavity and fixed by the limiting insertion hole and buckle. During disassembly, the limiting insertion buckle can be released from the limiting insertion hole, allowing easy removal. This dynamic design achieves both stable connection during use and convenient assembly/disassembly when needed.
3Stability of the object's composition
If a complex fitting mechanism is used to prevent rotation, then the anti-rotation effect is good, but the structure becomes more complex and production costs increase
Solution Approach 1:
The limiting insertion hole and limiting insertion buckle employ an asymmetric design where the buckle has a specific shape that matches the corresponding hole, allowing insertion in only one orientation. This asymmetric fitting mechanism provides effective anti-rotation functionality while maintaining a relatively simple structure that is easy to manufacture, avoiding the need for complex mechanical fastening mechanisms.
Data Source
AI summary
The present invention provides a structure for assembling and disassembling a dirt suction head to/from a filter bag, comprising a first connection piece and a second connection piece; one end of the second connection piece is detachably connected to a connection pipe of the dirt suction head, and the other end of the second connection piece is provided with a holding cavity; one end of the first connection piece is connected to an opening of an end of a filter bag body, and the other end of the first connection piece is assembled into the holding cavity; or a circumferential side edge of the opening of the filter bag body is tightly pressed and fixed between an outer side wall of the first connection piece and an inner side wall of the holding cavity, which has achieved a quick assembling and disassembling and smooth external aesthetics of a connection position.