Square-Column Magnet Brake for Consistent Bait Casting Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional bait casting reels with cylindrical magnets experience uneven magnetic field strengths and braking forces due to varying axial positions, leading to inconsistent spool control and increased reliance on user skill for preventing reverse winding phenomena.
Innovation Solution
The use of square column magnets with uniform magnetic field strengths, arranged symmetrically and uniformly in the circumferential direction, along with a magnet brake ring and control dial system, ensures consistent braking force regardless of spool shape or material, and allows for adjustable braking via a flange-shaped protrusion and dial control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If cylindrical magnets are used in the magnet brake, then the braking force can be provided, but the magnetic field strengths become uneven depending on axial heights and positions, resulting in uneven braking force
Solution Approach 1:
The patent changes the magnet shape from cylindrical to square column format, where each magnet has a specific local geometry (width w, length l, thickness h) that ensures uniform magnetic field strength. The square column shape with defined dimensions creates consistent magnetic flux distribution regardless of axial position, directly resolving the uneven braking force issue.
Solution Approach 2:
The patent modifies the geometric parameters of the magnets (changing from cylindrical to square column shape with specific width-to-length ratio between 0.8-1.2) to optimize magnetic field uniformity. This parameter change ensures that the magnetic field strength remains consistent across different axial heights and positions, providing uniform braking force.
2Force
If multiple cylindrical magnets are mounted on the magnet brake, then braking force is provided, but the magnetic flux strengths vary depending on the positions of the magnets, leading to inconsistent spool control
Solution Approach 1:
Each magnet is designed with a specific local geometry (square column shape with width w, length l, thickness h) that ensures uniform magnetic field strength. This local quality consistency across all magnets guarantees that the magnetic flux strengths remain equal regardless of their axial positions, providing reliable and consistent spool control.
Solution Approach 2:
The square column magnet design creates an equipotential magnetic field distribution where the magnetic flux strength is equal at all axial positions. This equipotentiality ensures that regardless of which magnet interacts with the spool at any given moment, the braking force remains consistent, improving spool control reliability.
3Ease of operation
If the distance between the magnet brake and the spool is adjusted to control rotational speed, then braking force is controlled, but the magnetic field strengths remain uneven, resulting in unstable braking performance
Solution Approach 1:
The patent changes the geometric parameters of the magnets to square column shape with specific dimensions (width w, length l, thickness h) and width-to-length ratio between 0.8-1.2. This parameter change ensures that the magnetic field strength remains uniform and stable regardless of the distance adjustment between the magnet brake and spool, providing stable braking performance while maintaining ease of 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
Provides a uniform and stable braking force, enhancing spool control and reducing the need for user expertise, while offering a greater magnetic field strength and adjustable braking force through the dial system.
Implementation Method 1
a magnet brake configured to control a braking force against rotation of a spool by interrupting magnetic fields generated between N and S poles
Data Source
AI summary
The present invention provides a brake for a bait casting reel with square column magnets, which includes: a spool installed between both sides of a left-right frame; a double ring-shaped magnet brake ring coupled to one end of a spool shaft; a magnet housing coupled to the magnet brake ring; a plurality of square column magnets mounted in a circumferential direction between the magnet brake ring and the magnet housing; a spool cover in which the magnet housing is accommodated; a first control dial slider configured to move the plurality of square column magnets forward or backward within the spool cover; a second control dial slider engaged with the first control dial slider to move it forward or backward; and a control dial which is gear-coupled with the second control dial slider to drive it upon rotation.