Fishing Rod Reel Seat Nut Structure for Smooth Rotation and Clean Finish
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fishing rod reel fixing devices face issues with adhesive protrusion affecting decorativeness and limited through-hole placement, and nuts for movable hoods restrict decorativeness due to fixation methods.
Innovation Solution
A nut design with overlapping protruding and recessed portions on inner and outer tubular portions, allowing for smooth rotation and enhanced decorativeness by positioning through-holes where they overlap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is applied to both the outer peripheral surface of the base portion and the inner peripheral surface of the cover member, then the cover member is fixed to the base portion, but adhesive protrudes from the end of the cover member impairing decorativeness
Solution Approach 1:
A seal member (ring-shaped elastic member) is introduced as an intermediary between the cover member and base portion. The seal member receives the adhesive, preventing it from protruding outward, while still allowing the adhesive to bond the components together. This resolves the contradiction by mediating between the need for reliable fixation and the need for clean appearance.
2Shape
If a cover member with through-hole is used to enhance decorativeness, then decorativeness is improved, but adhesive easily enters the through-hole and protrudes
Solution Approach 1:
The seal member acts as an intermediary that blocks adhesive from entering the through-hole while allowing the decorative function to remain intact. The seal member is positioned to seal the through-hole opening, preventing adhesive contamination while maintaining the aesthetic appearance of the cover member.
3Reliability
If the region where through-hole can be provided is limited to bond the inner surface of the cover member to the base portion, then fixation is reliable, but decorativeness is limited
Solution Approach 1:
The sealing function is segmented from the bonding function. The seal member provides sealing at the through-hole region, while adhesive is applied to a separate bonding region on the base portion. This segmentation allows the through-hole to be positioned for optimal decorativeness while maintaining reliable fixation through the separated bonding area.
4Reliability
If fixing portion is provided to fix the outer peripheral surface of the inner cylindrical body and the inner peripheral surface of the outer cylindrical body, then fixation is reliable, but through-hole cannot be provided in the region of the fixing portion
Solution Approach 1:
The fixing portion is segmented into a sealing region and a bonding region. The seal member handles the sealing function at the through-hole location, while the adhesive is applied to a separate bonding region on the outer peripheral surface. This allows the through-hole to be positioned freely for decorativeness while maintaining reliable fixation through the separated bonding area.
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 smooth rotation and reliable fixation while significantly improving decorativeness by allowing wider through-hole placement without compromising structural integrity.
Implementation Method 1
The adhesive is applied to both the outer peripheral surface of the base portion and an inner peripheral surface of the cover member
Data Source
AI summary
Provided is a nut capable of enabling smooth rotation while reliably fixing an outer tubular portion with an inner tubular portion as well as of improving decorativeness significantly, a fishing rod reel seat having the nut, and a fishing rod having the fishing rod reel seat. A nut according to an embodiment of the present invention is a nut for moving a movable hood, the nut being screwed with a male screw portion of a reel seat main body having a reel leg placing portion on which a reel leg is placed, the nut comprising: a nut base portion having a moving female screw portion on an inner peripheral surface and locked to the movable hood at an end, the female screw portion being screwed with the male screw portion of the reel seat main body; an inner tubular portion having a protruding portion or recessed portion, and fixed to an exterior of the nut base portion; and an outer tubular portion having a recessed portion or protruding portion engaged with the protruding portion or recessed portion, and fixed to an exterior of the inner tubular portion by the recessed portion or protruding portion, the outer tubular portion having an outer peripheral surface serving as at least a part of an outer peripheral surface of the nut, wherein the outer tubular portion has a through-hole penetrating in an inward and outward direction, and is provided at a position where at least a part of the through-hole and at least a part of the recessed portion or protruding portion overlap when viewed in an axial direction of the outer tubular portion.