Variable Spool Plate Adjusts Braking Magnet Gap in Bait Casting Reels
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Solution Overview
Problem
Bait casting reels face issues with friction and wear due to deformation of parts, limiting the ability to adjust the braking force of the magnet brake effectively, resulting in reduced maximum braking force and increased complexity in design.
Innovation Solution
A bait casting reel with a variable spool plate that can move left and right along the spool shaft, allowing users to adjust the braking force by changing the distance between the spool plate and the braking magnet, enabling the spool plate and magnet to come into contact or be closest for maximum braking force adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gap between braking magnet and spool is increased to prevent contact and breakage, then reliability is improved, but the maximum braking force decreases
Solution Approach 1:
The spool plate is made movable relative to the spool shaft through a groove and projection mechanism, allowing dynamic adjustment of the gap between the braking magnet and spool. This enables the system to adapt between maximum braking force (when spool plate is at outermost position) and safety margin (when spool plate is retracted), resolving the contradiction between reliability and braking force.
2Reliability
If the gap between braking magnet and spool is set larger than optimal, then reliability is improved, but device complexity increases due to need for additional braking magnets or assistant parts
Solution Approach 1:
Instead of adding more braking magnets or complex assistant parts, the invention uses a movable spool plate mechanism that dynamically adjusts the gap. This single mechanism replaces what would otherwise require multiple static components, reducing overall device complexity while maintaining reliability.
3Manufacturing precision
If the gap between braking magnet and spool is fixed at manufacturing, then manufacturing precision is improved, but adaptability decreases as user cannot adjust braking force
Solution Approach 1:
The spool plate can move along the spool shaft within a controlled range, allowing users to adjust the gap between braking magnet and spool according to their needs. This dynamic adjustment capability is achieved through the groove-projection mechanism that guides movement while maintaining precision.
Solution Approach 2:
The system allows changing the gap parameter between braking magnet and spool from a fixed value to an adjustable range. Users can modify this parameter based on wear conditions, deformation, or performance preferences, enhancing adaptability while maintaining manufacturing precision through the guided movement mechanism.
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
Enables users to freely and finely adjust the braking force, maintaining optimal performance even with wear or deformation, ensuring maximum braking force is maintained and allowing for personalized tuning.
Implementation Method 1
a magnet brake that uses attraction of magnetism... a braking magnet disposed inside a spool cover of the reel body and providing a braking force for reducing a rotational speed of the spool using a magnetic force that is applied to the spool plate
Data Source
AI summary
Provided is a bait casting reel for preventing friction or break of a spool plate and a braking magnet due to contact by deformation of a rotary shaft of a spool or a friction washer, etc., by employing a variable spool plate coupled to be able to move left and right in the longitudinal direction of a spool shaft so that a user can easily and freely adjust a braking force after setting a maximum braking force of a braking magnet without replacing or changing parts, and by enabling a user to perform zero adjustment such that the spool plate and the braking magnet is minimally spaced to set a maximum braking force of the braking magnet by moving the spool plate and the braking magnet in contact with each other when the spool plate is moved the outermost side.