Elongated Fishing De-hooker With Trigger Mechanism
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Solution Overview
Problem
Existing fishing hook removers are unsafe and inefficient for use on a boat, as they require anglers to lean over the gunwale, lack sufficient leverage, and often result in hook locking or line tension issues, making it difficult to remove hooks from fish in the water without causing stress or damage.
Innovation Solution
A de-hooker with an elongated design featuring a V-shaped hook and trigger mechanism that uses a mechanical advantage to secure and remove fishing hooks without relying on line tension, allowing for easier positioning and removal of hooks from a distance, reducing the need for angler proximity to the water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a short de-hooker is used, then the device is easier to handle and store, but the angler must lean over the gunwale which reduces safety
Solution Approach 1:
The de-hooker is divided into distinct functional segments: a long shaft for reaching distance, a gripping mechanism for hook capture, and a release mechanism for fish discharge. This segmentation allows each part to be optimized independently - the shaft can be long for safety distance while the gripping end remains maneuverable.
2Reliability
If a long de-hooker is used, then safety is improved by maintaining distance from the water, but leverage is reduced making hook removal more difficult
Solution Approach 1:
The de-hooker transitions from a simple linear tool to a three-dimensional mechanism with a shaft, gripping jaws, and rotational components. The gripping end can rotate and adjust in multiple directions, providing mechanical advantage and leverage despite the long shaft distance from the angler.
Solution Approach 2:
The de-hooker acts as an intermediary tool that extends the angler's reach and force application capability. The mechanical gripping mechanism serves as an intermediary between the angler's hand and the hook, providing leverage multiplication through its articulated joint design.
3Ease of operation
If line tension is used to position the hook, then positioning is achieved, but the process becomes more complex and time-consuming
Solution Approach 1:
The de-hooker's gripping mechanism is designed to self-position on the hook through its geometric shape and movement path. The jaws naturally align with and grasp the hook as the tool approaches, eliminating the need for separate positioning actions or line tension manipulation.
Solution Approach 2:
The de-hooker is pre-configured with an open jaw position that automatically orients toward the hook before contact. This preliminary positioning ensures that when the tool reaches the hook, the gripping action occurs immediately without requiring additional positioning steps or line tension adjustments.
4Ease of operation
If a small gripper is used to avoid hook locking, then hook removal is easier, but mechanical advantage is reduced requiring more force
Solution Approach 1:
The gripping mechanism features dynamic jaws that can open and close with rotational movement. The jaws transition from an open receiving position to a closed gripping position, creating mechanical advantage through the rotation arc. This dynamic action allows a small gripper to generate sufficient closing force through leverage during the rotational closing motion.
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 de-hooker provides enhanced safety and efficiency by allowing anglers to remove hooks from a safe distance, reducing stress on both the angler and fish, while minimizing the risk of hook locking and line tension failures, and accommodating various hook sizes.
Implementation Method 1
The rod's mechanical advantage increases as the rod nears the fixed V shape hook
Data Source
AI summary
A fishing hook remover with a V (10D) shape on the front end. Used to position and secure fishing hooks. The back end of the de-hooker has handle (20) is attached to body (12) and trigger (22) is attached to handle (20). V (10D) is part of jay (10), which is attached to the front end of tubular body (12). Shaft (14) is position in the center of body (12) by front space (26) and back spacer (28). The two spacers (26) and (28) have holes in their centers, which allow shaft (14) to slide. The back end of shaft (14) has a pivotal connection to front link (16). The back end of front link (16) has a pivotal connection to back link (18) and the back end of back link (18) has a pivotal connection to body (12). When trigger (22) is fully out front link (16) and back link (18) form proximately a 90-degree angle at their common connection. When trigger (22) is depressed it causes the angle between front link (16) and back link (18) to increase this in turn push shaft (14) towards point (10A). When trigger (22) is fully depressed shaft (14), front link (16) and back link (18) are in a straight line and the front end of shaft (14) is touching jay (10) at point (10A). Spring (24) pushes trigger (22) out when it is released. Fishing hooks are secured by being pushed against point (10A) by shaft (14).