Fishing Reel Spool Detachment Mechanism
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Solution Overview
Problem
Conventional one-touch detachable/reattachable fishing reel components require a longer axial length for the push button operation, leading to potential protrusion issues and less convenience in detachment/reattachment, especially when applied to single-bearing reels.
Innovation Solution
The design incorporates a spring arrangement member with through holes to allow the push button's tapered portions to pass through, reducing the axial length of the detachable/reattachable structure by overlapping the push button and spring arrangement member, and using a resilient wire spring member with C-shaped connecting portions for easier engagement with the annular groove.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional one-touch detachable/reattachable spool structure is used, then the spool can be detached/reattached from the spool shaft, but the axial length of the structure becomes longer causing protrusion issues
Solution Approach 1:
The push button is positioned to pass through the annular groove of the spool shaft, nesting the detachment mechanism within the existing structural space. This allows the push button to interact with the spring member and annular groove without requiring additional axial length, as the push button traverses through the groove's existing volume rather than extending beyond it.
Solution Approach 2:
The detachment mechanism transitions from a purely axial arrangement to one that incorporates radial and circumferential dimensions. The push button moves axially while passing through the annular groove, which is positioned radially outward from the spool shaft center. This multi-dimensional arrangement allows the detachment function to be achieved within a compact axial envelope by utilizing space in other dimensions.
2Reliability
If the push button structure is extended axially to ensure proper engagement, then the detachment function is reliable, but the structure protrudes and reduces convenience
Solution Approach 1:
The push button's tapered portion is nested within the annular groove during the detachment process. As the push button moves axially, its tapered surface engages the inner surface of the annular groove, guiding the spring member's engagement portions apart. This nesting arrangement ensures reliable engagement through geometric constraint while keeping the push button's axial projection minimal, as the interaction occurs within the groove's radial space rather than requiring axial extension.
3Stability of the object's composition
If the spring member engagement portions are positioned to engage the annular groove, then the spool is securely retained, but the push button requires longer axial movement to disengage them
Solution Approach 1:
The push button incorporates a tapered portion with a conical surface that interacts with the annular groove. This curved geometric form allows the push button to gradually engage and disengage the spring member's engagement portions as it moves axially. The tapered surface converts axial motion into radial separation of the engagement portions, achieving stable spool retention during normal operation while requiring only minimal axial movement for detachment, as the geometric progression of the taper amplifies the effect of small axial displacements.
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
This configuration shortens the axial length of the detachable/reattachable structure, enhancing convenience and assembly ease while maintaining the one-touch operation functionality, even when applied to single-bearing reels.
Implementation Method 1
The spring member is a resilient wire member that is bent into a shape. The spring member includes a pair of engagement portions that are arranged to face with each other so that they are engaged with the annular groove.
Data Source
AI summary
A fishing reel component includes a boss, a spring member, a lid member, a push button and spring arrangement member. The boss forms a boss through hole and a mounting space. The spring member is mounted in the mounting space. The spring member includes first and second engagement portions arranged to oppose each other. The lid member is fixed to the boss to retain the spring member and cover the mounting space. The push button includes a plurality of tapered portions. The tapered portions protrude from the push operation portion in the axial direction. The spring arrangement member arranges the spring member between the lid member and the spring arrangement member. The spring arrangement member includes a plurality of first through holes with each of the first through holes being configured for one of the tapered portions to pass therethrough.