Double Bearing Reel Concave Finger Retainer Design
Solution Overview
Problem
Typical double bearing reels have poorly designed outer edges on their side plates, leading to poor grip retention and strained finger gripping during fishing operations, causing discomfort and difficulty in maintaining a stable hold on the reel body.
Innovation Solution
The introduction of concave finger retainers on the outer edges of the side plates, which provide a concave surface for the fingertips to press against, enhancing grip retention and allowing for secure handling of the reel body during fishing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the outer edges of side plates are merely rounded or chamfered, then the structure remains simple, but grip retention on the reel body becomes poor
Solution Approach 1:
The patent applies local quality by modifying only the outer edges of the side plates with concave finger retainers, while keeping the rest of the reel structure simple. This localized modification provides enhanced grip retention at the specific contact point of the fingertip without complicating the overall device structure.
Solution Approach 2:
The concave finger retainers utilize curvature to create a surface that conforms to the natural shape of the fingertip. This curved geometry allows the fingertip to press firmly into the concave surface, improving grip retention through geometric adaptation rather than complex mechanical structures.
2Ease of manufacture
If conventional edge designs are used on side plates, then manufacturing remains easy, but fingertip retention and palming performance deteriorate
Solution Approach 1:
The concave finger retainers are implemented as localized features on the side plates, requiring modification of only specific regions rather than the entire component. This approach maintains manufacturing simplicity while significantly improving palming performance at the critical grip contact areas.
Solution Approach 2:
The invention changes the geometric parameters of the side plate edges by introducing concave surfaces with specific curvature radii. This parameter modification optimizes the contact between fingertip and reel body, enhancing ease of operation without fundamentally changing the manufacturing process.
3Ease of operation
If the reel body edges are not designed for finger retention, then the structure remains simple, but strained gripping occurs causing finger pain
Solution Approach 1:
The concave finger retainers employ curved surfaces that match the anatomy of the fingertip, distributing pressure evenly across the contact area. This geometric design eliminates strained gripping and finger pain without requiring complex mechanical retention mechanisms.
Solution Approach 2:
The concave edges of the side plates serve a dual function: they maintain the structural integrity of the reel body while simultaneously providing ergonomic grip retention. The structure serves itself by incorporating the retention function directly into the existing side plate components.
Data Source
AI summary
One object is to provide a double bearing reel that allows a fingertip gripping the reel body to be retained well in reeling out and in a fishing line thereby to provide better grip retention of the reel body. A double bearing reel according to the present invention includes a reel body having left and right side plates. A concave finger retainer is provided in an edge of at least one of outer circumferential surfaces of the left and right side plates to retain a thick of a fingertip of a hand gripping and holding the reel body.