Line Roller Grease Holding Unit for Fishing Reel Seawater Prevention
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Solution Overview
Problem
Conventional line rollers for fishing reels face issues with seawater penetration, leading to salt solidification, rust, and reduced functionality, particularly due to the complexity and high cost of magnetic sealing mechanisms, and the difficulty in maintaining these systems.
Innovation Solution
A line roller design featuring a cylindrical guide member, a ball bearing axle bearing member, and a grease holding unit that forms a space between the axle bearing member and the guide member, holding water-repellent grease to prevent seawater penetration, utilizing a simple structure with a seal member made of an elastic material to create a labyrinthine effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnetic sealing mechanism using magnetic fluid is employed to seal the axle bearing member, then seawater penetration is prevented, but the structure becomes complex and costly
Solution Approach 1:
The patent extracts and eliminates the complex magnetic sealing mechanism (magnets, magnetic fluid, magnetic parts) from the system. Instead, it uses a simple grease holding unit filled with water-repellent grease to achieve seawater prevention, thereby removing unnecessary complexity while maintaining the sealing function.
Solution Approach 2:
The patent replaces the expensive magnetic sealing mechanism with a simple, inexpensive grease holding unit. The water-repellent grease provides effective sealing at a fraction of the cost of magnetic sealing components, making the solution economically viable without compromising reliability.
2Reliability
If a magnetic sealing mechanism using magnetic fluid is employed to seal the axle bearing member, then seawater penetration is prevented, but maintenance becomes difficult
Solution Approach 1:
The patent removes the maintenance-intensive magnetic sealing system and replaces it with a simple grease holding unit. The grease-based sealing mechanism requires no active maintenance, no special handling procedures, and no complex reassembly, making it far easier to service than magnetic sealing systems.
Solution Approach 2:
The water-repellent grease in the grease holding unit provides self-sealing functionality without requiring external power sources, control systems, or specialized maintenance procedures. The grease passively prevents seawater penetration throughout the product lifecycle, eliminating the need for active maintenance of sealing mechanisms.
3Object-affected harmful factors
If seawater comes in contact with the outer surface of the axle bearing member, then salt solidifies and enters the axle bearing member causing noise and preventing smooth rotation
Solution Approach 1:
The patent applies water-repellent grease to the outer surface of the axle bearing member and in the grease holding unit before seawater can contact the bearing surfaces. This preliminary protective layer prevents salt solidification and rust formation, thereby preventing noise and rotation resistance before they can occur.
Solution Approach 2:
The water-repellent grease acts as an intermediary substance between the seawater environment and the axle bearing member. It creates a protective barrier that prevents direct contact between seawater and the bearing surfaces, thereby eliminating the harmful effects of salt solidification and rust while maintaining smooth operation.
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
Effectively prevents seawater from reaching the axle bearing member, reducing noise and rust, while maintaining smooth rotation and simplifying maintenance, all at a lower cost compared to magnetic sealing mechanisms.
Implementation Method 1
a grease holding unit that forms a space leading from the axle bearing member to the guide member and that holds a water-repellent grease in the space
Implementation Method 2
The axle bearing member is a ball bearing comprising an outer ring that contacts the guide member, an inner ring that contacts the support member, and a plurality of rolling bodies disposed between the outer ring and the inner ring
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention is directed to a line roller (3) for guiding the fishing line onto a spool of a spinning reel for fishing includes a cylindrical guide member (6) including a guide surface for guiding the fishing line on the outer perimeter, an axle bearing member (4) that rotatably supports an inner perimeter surface of the guide member, a support member (24) that supports the axle bearing member, and a grease holding unit that forms a space leading from the axle bearing member to the guide member and that holds a water-repellent grease (10) in the space.