Spinning Reel Returning Member Sloped Surface Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional reel units for spinning reels face challenges in designing a returning member with a gradual sloped surface that reduces space requirements and allows for easy adjustment of the sloped surface, while maintaining structural integrity and ease of assembly.
Innovation Solution
The reel unit incorporates a returning member with a plate-like arranging portion and a protrusion, where the plate-like portion is sandwiched between a cylindrical portion and a second flange portion, allowing for gentle sloping and easy adjustment of the sloped surface, and can be fixed without tools, reducing stress concentration and space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the returning member is formed integrally on the front surface of the housing unit, then the device complexity is reduced, but the sloped surface becomes steep requiring big rotating force
Solution Approach 1:
The returning member is separated from the housing unit and mounted as a detachable component in the gap between the cylindrical portion and the second flange portion. This segmentation allows the returning member to be designed with a gentle sloped surface independently, reducing the rotating force required while maintaining structural simplicity through modular assembly.
2Ease of operation
If the returning member is formed as a separate body held between housing unit and lid portion, then the sloped surface can be gentle, but the device complexity increases due to fixation structure
Solution Approach 1:
The returning member is merged with the gap space between the cylindrical portion and the second flange portion, utilizing the existing structural void for component placement. This eliminates the need for separate fixation structures while maintaining the gentle sloped surface, as the returning member is naturally positioned and secured by the gap boundaries.
3Area of stationary object
If the returning member is detachably mounted in the gap, then the space requirement is reduced and assembly is easier, but the structural integrity may be compromised
Solution Approach 1:
The returning member is nested within the gap formed by the cylindrical portion and the second flange portion, utilizing the existing structural space efficiently. This nesting approach reduces the overall space requirement while maintaining structural integrity, as the returning member is contained within the protective framework of the housing unit's gap structure.
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 design enables a gentle return of the bail arm with reduced force, allowing for customizable sloping and efficient use of space, enhancing the usability and assembly of the reel unit.
Implementation Method 1
The returning member has a sloped surface in a direction away from the reel unit for pressing the moving member in response to the rotation of the rotor in the line-winding direction
Data Source
AI summary
A reel unit 2 for a spinning reel includes a housing unit 2a, a lid portion 2b, and a returning member 28. The housing unit 2a includes a cylindrical portion 27 and a somewhat semicircular first flange portion 24a arranged behind the cylindrical portion 27. The lid portion 2b has a somewhat semicircular second flange portion 24b arranged behind and forming a gap 27b with the rear surface of the cylindrical portion 27. The lid portion 2b is detachably coupled to the housing unit 2a. The returning member 28 is detachably mounted in gap 27b and includes a plate-like arranging portion 28a disposed in gap 27b and a protrusion 28b gradually protruding from a front side of the arranging portion 28a to face the first flange portion 24a. The protrusion 28b has a first sloped surface 28c contactable with a bail tripping mechanism.