Spinning Reel Bail Support Fixing Structure for Line Slack Prevention
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Solution Overview
Problem
Existing spinning reels face challenges in easily mounting and securely attaching a line slack prevention member due to the need for opening a C-shaped arm portion and potential corrosion issues with metal bail support parts, especially in large reels.
Innovation Solution
A fixing structure using a line slack prevention member with a cylindrical mounting portion and expanding member, featuring male and female threads, to securely attach the member to a bail support member, utilizing resin for elasticity and avoiding direct metal contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a C-shaped arm portion is used to mount the line slack prevention member on the bail support member, then the member can be securely mounted, but the mounting process becomes complex and time-consuming due to the need to open and reposition the C-shaped arm
Solution Approach 1:
The mounting structure is divided into separate components: a mounting portion with a through-hole and an expanding member. This segmentation allows the expanding member to be inserted independently through the through-hole and expanded to secure the line slack prevention member, eliminating the need to manipulate a C-shaped arm structure.
Solution Approach 2:
The expanding member acts as an intermediary element between the line slack prevention member and the bail support member. It is inserted through the through-hole and expanded to create a secure connection, serving as a mediating component that simplifies the mounting process while ensuring reliable attachment.
2Strength
If metal bail support parts are used in large spinning reels, then strength and durability are improved, but corrosion resistance deteriorates due to electrolytic corrosion between different metals and salt water exposure
Solution Approach 1:
The expanding member serves as a non-metallic intermediary component that connects the line slack prevention member to the metal bail support member. By using a material like resin for the expanding member, direct metal-to-metal contact is eliminated, preventing electrolytic corrosion while maintaining the strength benefits of metal bail support parts.
Solution Approach 2:
The mounting structure combines different materials: the bail support member can be made of metal for strength, while the expanding member is made of corrosion-resistant material such as resin. This composite approach allows the system to benefit from both the strength of metal and the corrosion resistance of non-metallic materials.
3Reliability
If screws or other fastening methods are used to attach the line slack prevention member, then secure attachment is achieved, but the risk of electrolytic corrosion and salt water damage increases, making removal difficult
Solution Approach 1:
The attachment system is segmented into a mounting portion with a through-hole and a separate expanding member. This segmentation allows for a simple insertion and expansion mechanism that provides secure attachment without requiring screws or complex fastening methods, enabling easy detachment by simply removing the expanding member.
Solution Approach 2:
The expanding member acts as a non-corrosive intermediary that provides secure attachment without the need for metallic fasteners. Its expansion mechanism creates a firm connection while eliminating the risk of electrolytic corrosion associated with screw connections, and allows for easy detachment by simply removing the expanding member.
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
The structure allows for easy and secure attachment of the line slack prevention member, preventing detachment and corrosion, while the resin's elasticity mitigates damage from fishing line knots.
Implementation Method 1
the mounting portion of the line slack prevention member expands in diameter and is pressed against the bail support member
Implementation Method 2
male threads are formed on the outer circumferential surface of the expanding member, and female threads that screw onto the male threads of the expanding member being formed on the inner circumferential surface of the through-hole
Data Source
AI summary
A fixing structure for line slack prevention to be disposed on a bail support member of a spinning reel for fishing, the fixing structure includes a line slack prevention member having a cylindrical mounting portion to be inserted into a mounting hole on the bail support member and a fin portion extending radially outward from the mounting portion, and an expanding member to be inserted in a through-hole in the mounting portion of the line slack prevention member to fix the mounting portion of the line slack prevention member to the bail support member in an expanded state.