Variable Length Fishing Rod Grip With Nested Guide Pipe
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Solution Overview
Problem
Conventional fishing rods have a fixed grip length, which cannot be adjusted to match different use states, limiting user convenience.
Innovation Solution
A variable length grip system for fishing rods, featuring a grip frame that moves within a guide pipe, with a stopper and crimping mechanism to adjust length, and stepped portions for a coming-off prevention mechanism, allowing the grip to be extended or shortened.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the grip length is fixed in conventional fishing rods, then the structure is simple and easy to manufacture, but the adaptability to different use states is poor
Solution Approach 1:
The grip is divided into multiple sections: a fixed grip portion and an adjustable grip frame that can move independently within the guide pipe. This segmentation allows the grip length to be adjusted by extending or retracting the grip frame, providing adaptability to different use states while keeping the overall structure manageable through modular design.
Solution Approach 2:
The grip frame is designed to be movable within the guide pipe, transforming the static fixed-length grip into a dynamic adjustable-length grip. The grip frame can be extended or retracted along the longitudinal axis, allowing users to adjust the grip length according to different fishing conditions and personal preferences.
2Ease of operation
If the grip length is made adjustable, then the usability for different fishing conditions is improved, but the device complexity increases
Solution Approach 1:
The grip frame is nested within the guide pipe, with the grip frame's outer diameter being smaller than the guide pipe's inner diameter, allowing the grip frame to move freely inside the guide pipe. This nesting arrangement enables the adjustable grip function while maintaining a compact overall structure, as the adjustable components are contained within the existing grip housing.
Solution Approach 2:
The stopper serves as an intermediary component between the grip frame and the user's hand. It can be manually moved along the grip frame to lock at different positions, thereby controlling the extension length of the grip frame. This intermediary mechanism provides a simple and intuitive way to adjust and maintain the desired grip length without complex control systems.
3Reliability
If a stopper mechanism is added to fix the grip frame, then the grip length can be maintained, but the device complexity increases
Solution Approach 1:
The crimping portion of the stopper is designed to be crimped by the user's hand during normal gripping operations. When the user grips the fishing rod, their hand naturally applies force to the crimping portion, causing it to deform and expand, which in turn presses against the guide pipe's inner surface to lock the stopper in place. This self-service mechanism eliminates the need for separate locking actions or additional complex locking mechanisms.
Solution Approach 2:
The stopper's crimping portion is designed with specific material properties and geometric parameters that allow it to deform under hand pressure and expand to engage with the guide pipe. By carefully selecting the material characteristics and dimensions of the crimping portion, the mechanism achieves reliable positioning through controlled deformation rather than through complex mechanical locking systems.
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 the grip length to be freely adjusted between the longest and shortest states, enhancing usability and fishing performance.
Implementation Method 1
the stopper has a crimping portion whose diameter can be enlargedly deformed, and the grip frame is fixed inside the guide pipe by crimping of the crimping portion to an inner surface of the guide pipe
Data Source
AI summary
In a fishing rod constituted by a rod and a grip which supports a base end side thereof, the grip having a front grip and a rear grip, there are provided a grip frame extending from a rear end part of the rear grip and a guide pipe into which the grip frame is movably inserted. A length of the grip varies in correspondence with a movement of the grip frame.