Cargo Pack Latch Mechanism for One-Handed Secure Closure
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Solution Overview
Problem
Existing latch mechanisms for bicycle cargo packs are difficult to manipulate, especially when wearing gloves or when the pack is not easily accessible, requiring complex two-finger operations.
Innovation Solution
A latch mechanism with a resilient connector, such as an elastic shock cord, connects first and second latching components, allowing for a simple thumb or finger push for engagement and a release tab for disengagement, enhanced by magnetic attraction for secure locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional latching mechanism requiring two-finger manipulation is used, then secure latching is achieved, but ease of operation deteriorates when wearing gloves or when difficult to reach
Solution Approach 1:
The latching mechanism is designed to be actuated by a single thumb push, eliminating the need for complex two-finger manipulation. The resilient connector automatically engages the retainer with the projection when the lid is closed, and the release tab allows easy disengagement by simply pushing it to pivot the retainer off the projection. This self-service design enables reliable latching and unlatching even when wearing gloves or when the cargo pack is difficult to reach.
2Ease of operation
If a resilient connector acting close to the engagement surface is used, then ease of operation is improved, but latching force and security deteriorate
Solution Approach 1:
The resilient connector is positioned to act on the retainer at a point spaced from the engagement surface in the latching direction, creating a moment arm that amplifies the latching force. This spatial arrangement allows the connector to apply sufficient force for secure engagement while maintaining ease of operation, as the force is applied through a leveraged position rather than directly at the engagement point.
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
Facilitates easy and secure closure and opening of bicycle cargo packs, even with gloves, providing a positive tactile and audible feedback for proper engagement, and allowing for easy replacement of components.
Implementation Method 1
a resilient connector which is configured for connecting the first latching component to the first part of the assembly and for applying a resilient action on the first latching component resisting displacement of the first latching component in a latching direction
Implementation Method 2
Magnetic means may be provided for creating magnetic attraction between the first and second latching components
Data Source
AI summary
A latch mechanism for securing together first and second parts of an assembly includes a first latching component comprising a retainer having an engagement surface; a resilient connector connecting the first latching component to the first part and applying a resilient action on the first latching component resisting displacement of the first latching component in a latching direction; and a second latching component comprising a projection having a latching surface and attached to the second part with the projection projecting outwardly from the second part to a free end of the projection. The engagement surface is engageable with the latching surface to prevent displacement of the first latching component relative to the second latching component in a direction opposite to a latching direction. The latch mechanism further comprises a guide surface on the second latching component and a limb provided on the first latching component.