Quick-Change Fishing Reel Spool With Tool-Free Drag Arbor Coupling
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Solution Overview
Problem
Existing changeable spool systems for fishing reels require disassembly and reassembly of the drag knob assembly, are complex in design, and lack a convenient way to display information about the fishing line, complicating use and preparation for different fishing conditions.
Innovation Solution
A quick-change spool system comprising a monolithic quick-change spool and drag arbor, which can be attached and removed without tools, and features alignment keys, torque transfer slots, and retention detents for seamless swapping, along with a modified drag knob and spool skirt for line information display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing changeable spool systems are used, then spool changes can be made, but the drag knob assembly must be disassembled and reassembled, increasing complexity and time required
Solution Approach 1:
The invention divides the spool system into two independent parts: a reusable drag arbor that remains attached to the reel, and interchangeable spools that can be quickly swapped. This segmentation eliminates the need to disassemble the drag knob assembly, as the spools attach directly to the exposed arbor. The drag arbor serves as a permanent mounting structure while spools become standalone interchangeable units.
Solution Approach 2:
The invention extracts the drag mechanism from the spool assembly, creating a separate drag arbor that remains fixed to the reel. This extraction allows spools to be simplified to just the line-holding component, which can be quickly changed without affecting the drag system. The drag knob assembly no longer needs to be disassembled because the drag mechanism is decoupled from the spool.
2Adaptability or versatility
If existing changeable spool systems are used, then spool changes are possible, but the design becomes complex with multiple separate components
Solution Approach 1:
The invention merges the drag mechanism with the arbor structure, creating a single integrated drag arbor component that remains permanently attached to the reel. This consolidation eliminates the need for separate drag assembly and spool assembly, reducing the total number of components. The spools themselves are simplified to basic cylindrical forms without integrated drag mechanisms.
Solution Approach 2:
The drag arbor serves multiple functions: it provides the mounting structure for spools, houses the drag mechanism, and exposes a interface for quick spool attachment. This multi-functionality reduces the need for additional components, as the arbor replaces what would otherwise be separate drag assembly and spool mounting structures.
3Quantity of substance
If existing spool systems are used, then fishing line can be held, but there is no convenient way to display information about the fishing line
Solution Approach 1:
The invention adds information display features specifically to the spool skirt portion, which is the visible outer rim of the spool. Different line types are indicated by different colors or markings on the skirt, allowing users to quickly identify the line type without examining the entire spool or assembly. This localized information display is positioned where it is most visible and accessible to the user.
Data Source
AI summary
A quick-change spool, includes an exterior, including (i) a spool flange, at a top end of the quick-change spool, (ii) a spool skirt, at a bottom end of the quick-change spool, and (iii) a spool cylinder, between the spool flange and the spool skirt, an interior, including (iv) at least one spool alignment key, on a spool cylinder interior surface, (v) at least one spool torque transfer key, on a spool skirt interior surface, and (vi) at least one spool retention detent, on the spool skirt interior surface. Further, a quick-change spool system, comprises the quick-change spool, and a drag arbor. The quick-change spool and the drag arbor are configured to (a) releasably attached together, through interaction between a spool retention detent and a spool retention recess, and (b) transfer torque between each other when attached together, through interaction between a spool torque transfer key and a spool torque transfer slot.