Pivoting Shoulder Strap Mechanism for Bag Stability
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Solution Overview
Problem
Existing shoulder straps either cause the shoulder cushion to slip off or cut into the neck when carrying a receptacle, as they either go over the bag-side shoulder or across the torso, leading to instability and discomfort for the wearer.
Innovation Solution
A combination mobile shoulder strap and stationary shoulder cushion system with releasable connectors, where the mobile strap elements pivotally attach to the stationary cushion, allowing the straps to carry a receptacle without moving the cushion, thus preventing discomfort and instability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shoulder strap goes over the bag-side shoulder, then the strap can carry the receptacle, but the shoulder cushion slips off and the bag migrates rearwardly and dips forwardly
Solution Approach 1:
The patent applies the dynamics principle by making the shoulder cushion laterally pivotable relative to the strap assembly. This allows the cushion to dynamically adjust its position and orientation in response to movement, maintaining optimal contact with the wearer's shoulder while preventing slippage. The pivotable connection enables the system to adapt to changing carrying conditions without compromising stability or comfort.
2Force
If the shoulder strap goes across the wearer's torso, then the strap can distribute weight, but the shoulder cushion cuts into the wearer's neck
Solution Approach 1:
The laterally pivotable connection allows the shoulder cushion to dynamically adjust its position, automatically moving away from the wearer's neck area when the strap is positioned across the torso. This dynamic adjustment prevents the cushion from cutting into the neck while maintaining effective weight distribution across the shoulder.
3Ease of operation
If a wider shoulder cushion is used, then comfort may improve, but the cushion still slides off or cuts into the neck
Solution Approach 1:
Instead of relying solely on increased width, the patent implements a laterally pivotable connection that allows the cushion to maintain its position through active adjustment. The pivotable mechanism enables the cushion to self-correct and maintain optimal positioning, providing both comfort and stability without necessarily increasing the cushion's width.
Data Source
AI summary
A combination mobile shoulder strap and stationary shoulder cushion for carrying a receptacle, via appropriate releasable connectors, without movement of the stationary shoulder cushion and without the consequences caused at least by such movement to a wearer. The combination includes a stationary shoulder cushion, a pair of mobile strap elements, and apparatus that laterally pivotally attaches the pair of mobile strap elements to the stationary shoulder cushion so as to allow the pair of mobile strap elements to carry the receptacle, via the appropriate releasable connectors, and move relative to the stationary shoulder cushion, while the stationary shoulder cushion does not move so as to eliminate the consequences to a wearer caused at least by such movement of the pair of mobile strap elements. The apparatus is underlaid by the stationary shoulder cushion so as to eliminate the consequences caused by the apparatus undesirably engaging the wearer.