Lure Weight Support for Two-Direction Center-of-Gravity Control
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Solution Overview
Problem
Conventional lures face challenges in adjusting the center of gravity due to restricted movement paths of weighted elements, leading to instability and the need for trial and error in weight and diameter adjustments.
Innovation Solution
The lure design includes a support that allows the weight to move in both the front-rear and transverse directions, with an urging member to return the weight forward and a restricting portion to prevent rearward movement, enhancing the degree of freedom and stability of the center of gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the weighted element is restricted to linear movement along a straight shaft, then the structure is simple, but the degree of freedom of movement path is limited making it difficult to place the center of gravity at the desired position
Solution Approach 1:
The patent transitions from one-dimensional linear movement along a straight shaft to two-dimensional movement by introducing a curved guide member. The guide member's curvature allows the weighted element to move not only in the front-rear direction but also in the transverse direction, providing the necessary degrees of freedom to position the center of gravity at desired locations while maintaining structural simplicity.
2Adaptability or versatility
If multiple weighted elements move independently along the guide wire, then the center of gravity can be adjusted, but the first weighted element may not follow the second weighted element and may not be positioned correctly
Solution Approach 1:
The patent introduces a connecting structure that couples the first and second weighted elements. This intermediary connection ensures that when the second weighted element moves along the guide member, the first weighted element follows accordingly, maintaining their relative positions and ensuring reliable center of gravity adjustment without requiring independent movement control of each element.
3Reliability
If the weight and diameter of the first weighted element are adjusted through trial and error to prevent it from exceeding the step portion, then the center of gravity can be stabilized, but the manufacturing process becomes complex and time-consuming
Solution Approach 1:
The patent incorporates a step portion in the guide member that preliminarily defines the movement range of the weighted element. This pre-designed structural feature prevents the weighted element from exceeding the desired position during operation, eliminating the need for trial-and-error adjustments of weight and diameter. The manufacturing process is simplified as the positioning is achieved through the guide member's geometry rather than precise dimensional control of the weighted element.
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
This configuration enables appropriate adjustment and stabilization of the lure's center of gravity, allowing for more irregular behavior and improved movement through water.
Implementation Method 1
The elastic member urges the weighted element forward
Implementation Method 2
the weighted element moves linearly toward the tail of the body along the shaft by inertia
Data Source
AI summary
A lure 1 includes a body 3, a support 5, and a weight 7. The body 3 includes a head 13a in its front portion and a tail 13b in its rear portion. The support 5 extends in the front-rear direction inside the body 3. The weight 7 is supported by the support 5 so as to be movable in the front-rear direction. At least part of the weight 7 is movable in a transverse direction that intersects with the front-rear direction.