Fishing Rod Grip Bonding via Nested Insertion and Deformation Recess
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Solution Overview
Problem
Conventional fishing rods face challenges in increasing joining strength while minimizing weight and size, particularly due to issues with adhesive application and bonding area when attaching a grip body to the rod, which often requires larger grip sizes and can lead to adhesive displacement.
Innovation Solution
A fishing rod design featuring a grip body with a first insertion portion that is bonded to the inner surface of the rod, incorporating a deformation portion on its outer surface to guide adhesive and enhance bonding strength, and a rod plug with a second deformation portion for additional locking and strength, allowing for a downsized grip body and improved weight reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the bonding area between the grip body and the rod is increased to secure joining strength, then the joining strength is improved, but the size of the grip body is increased
Solution Approach 1:
The grip body is inserted into the rod with the insertion portion fitting inside the rod's internal cavity, creating a nested structure. This allows the bonding area to be increased within the rod's existing dimensions without increasing the overall grip body size, as the grip body nests within the rod rather than extending outward.
Solution Approach 2:
The invention transitions from bonding the grip body to the outer peripheral surface of the rod (external dimension) to bonding the insertion portion to the inner peripheral surface of the rod (internal dimension). This dimensional change allows increased bonding area without increasing the external size of the grip body.
2Strength
If the insertion portion is lengthened to secure joining strength, then the joining strength is improved, but the adhesive is pushed out to the outside making it difficult to apply
Solution Approach 1:
The deformation portion is formed in advance on the insertion portion before assembly. This pre-formed deformation portion creates a recess that guides and contains the adhesive during assembly, preventing it from being pushed out to the outside while still allowing sufficient bonding area for strength.
Solution Approach 2:
The deformation portion acts as an intermediary structure between the insertion portion and the adhesive. It provides a controlled space that receives and holds the adhesive, mediating between the need for long insertion portion for strength and the need to prevent adhesive displacement during application.
3Weight of moving object
If the grip body is downsized, then the weight is reduced, but the joining strength may be compromised
Solution Approach 1:
By nesting the grip body within the rod's internal cavity, the design achieves a downsized grip body that fits inside the existing rod structure. This nested configuration increases the bonding area relative to the grip body size, maintaining joining strength while reducing overall weight.
Solution Approach 2:
The invention changes the bonding interface from external surface bonding to internal surface bonding. This parameter change allows the same bonding strength to be achieved with a smaller grip body size, as the bonding area is utilized within the rod's internal volume rather than requiring external surface 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
The design achieves increased joining strength and reduced weight by securely bonding the grip body to the rod with an anchor effect, allowing for easier adhesive application and a larger bonding area, while preventing adhesive displacement and enhancing durability.
Implementation Method 1
the inner peripheral surface of the rod and the first insertion portion of the grip body are bonded to each other
Implementation Method 2
joining strength can be easily increased by bonding, screwing, engagement, or the like between the rod and the first deformation portion
Data Source
AI summary
A fishing rod comprises a rod; and a grip body attached to a rear end of the rod. The grip body comprises a main body portion protruding from the rear end of the rod, and a first insertion portion extending from the main body portion to a rod side and inserted into the rod. A first deformation portion recessed in a direction away from an inner peripheral surface of the rod is provided on an outer peripheral surface of the first insertion portion.