Motorcycle Carrier Bag Fixing System With Flexible Ring And Locking Teeth
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Solution Overview
Problem
Existing carrier bags for motorcycles, especially those attached to the fuel tank, face difficulties in easy application and removal, often causing scratching and abrasion, and can become unstable during maneuvers or high speeds when using magnetic or suction-based attachments, and are cumbersome when secured with screws.
Innovation Solution
A carrier bag system featuring a flexible ring and annular connection element with locking teeth and a metallic disc that can be easily snapped onto the tank cap, using adjustable positions and a spring mechanism for secure and damage-free attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If adjustable straps are used to wrap around the tank, then the carrier bag can be applied to the motorcycle, but the application and removal become difficult and the straps cause scratching and abrasion of the paint
Solution Approach 1:
The patent replaces the mechanical strap-wrapping system with a magnetic attachment system. The carrier bag uses magnetic elements that directly attach to the metal tank cap, eliminating the need for straps that wrap around and摩擦 the tank surface. This substitution resolves the contradiction by providing easy attachment/removal through magnetic force while completely avoiding paint damage.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary force between the carrier bag and the tank cap. Instead of direct mechanical contact through straps, the magnetic field mediates the attachment, allowing the bag to be securely fixed without physical straps contacting and damaging the paint surface.
2Ease of operation
If magnetic elements or suction pads are used to connect to the tank, then the carrier bag can be applied easily, but the bag suffers displacements during maneuvers or high speeds causing unbalancing or detachment
Solution Approach 1:
The patent replaces weak magnetic or suction attachments with a mechanical screw-fastening system. The carrier bag is secured to the tank cap using screws that pass through the cap into the bag's mounting holes, providing robust mechanical connection that resists displacement during maneuvers and high speeds while maintaining easy application and removal.
Solution Approach 2:
The patent divides the attachment system into discrete screw-fastening points distributed around the carrier bag and tank cap interface. This segmentation creates multiple independent attachment points that collectively provide stable, distributed mechanical support, preventing displacement while allowing easy assembly and disassembly.
3Reliability
If flanges with screws are used to fix the carrier bag to the tank cap, then greater safety and reliability are ensured, but the application and removal become difficult
Solution Approach 1:
The patent segments the screw-fastening system into pre-drilled mounting holes and corresponding screw holes, allowing standardized screws to be quickly inserted and tightened. This segmentation maintains the reliability of screw fastening while simplifying the application and removal process through standardized, repeatable fastening points.
Solution Approach 2:
The patent incorporates pre-drilled mounting holes and threaded inserts into the carrier bag and tank cap during manufacturing. This preliminary preparation eliminates the need for drilling or complex alignment during installation, allowing users to simply insert and tighten screws for quick, reliable attachment and easy removal.
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 system allows for rapid, intuitive, and stable attachment and removal of the carrier bag without damaging the motorcycle, preventing unintended rotation and ensuring secure positioning even on models with fairings.
Implementation Method 1
a spring mechanism for secure and damage-free attachment and detachment
Data Source
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AI summary
A system is described for hooking and unhooking a carrier bag (10) with respect to the tank (100) of a motorcycle. The system comprises a first group of components (14; 16; 18) suitable to be fixed to the carrier bag (10) and a second group of components (20; 22) suitable to be fixed to the tank (100). The first group of components comprises a flexible ring (18) provided with a plurality of locking teeth (38) elastically projecting inwards of such a flexible ring (18). The locking teeth (38) are coupled with an annular flange (20) of the second group of components to obtain the hooking of the carrier bag (10) to the tank (100). On the flexible ring (18) there is a hand- driven mechanism (54) for the radial re- traction of the locking teeth (38) to generate a radial displacement of such locking teeth (38), allowing disengagement between the flexible ring (18) and the annular flange (20) and, hence, obtaining the disengagement of the carrier bag (10) from the tank (100).