Purse Security Fastener with Interlinked Chain and Shoulder Pad
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Solution Overview
Problem
Purses are prone to theft and cause discomfort due to their weight and straps digging into the shoulder, leading to muscle strain and pain, especially when carrying heavy loads.
Innovation Solution
A combined purse and security fastener featuring a flexible chain with interlinked rings and an ergonomic sliding shoulder pad that secures the purse around the neck and shoulder, preventing theft while providing comfort by distributing the weight and reducing strain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a purse is carried on the shoulder using a standard strap, then the purse can be easily accessed and carried, but the strap digs into the shoulder causing discomfort and muscle strain
Solution Approach 1:
A security fastener with a flexible chain and shoulder pad is introduced as an intermediary device between the purse strap and the user's shoulder. The shoulder pad acts as a mediator that distributes the weight and pressure across a larger surface area, preventing the strap from digging into the shoulder while maintaining secure carrying.
Solution Approach 2:
The solution transitions from a single-dimension strap (one-point contact) to a multi-dimensional system involving a flexible chain that can be positioned around the neck and a shoulder pad that distributes pressure across the shoulder surface. This dimensional expansion allows the weight to be borne more effectively by the neck and shoulder structure rather than concentrated at one point.
2Reliability
If a purse is secured tightly to prevent theft, then security is improved, but the strap causes extreme discomfort and muscle strain
Solution Approach 1:
The shoulder pad serves as a protective intermediary that absorbs and distributes the pressure from the secure fastening system. This allows the purse to be held securely (preventing theft) while the pad prevents the harmful concentration of force that would cause shoulder pain and muscle strain.
3Quantity of substance
If a heavy purse is carried for extended periods, then essential items can be transported, but the weight causes the purse to slide off the shoulder and extreme discomfort
Solution Approach 1:
The flexible chain configured around the neck provides a counterbalancing support system. By distributing the weight of the heavy purse across the neck and shoulder structure rather than relying solely on the shoulder strap, the system counteracts the downward force that causes the purse to slide off, enabling comfortable carrying of heavy loads for extended periods.
Data Source
AI summary
A combined purse and security fastener includes a purse including a storage section and a flexible shoulder strap affixed thereto, and a security fastener slidably coupled to the purse. Such a security fastener includes a flexible chain and a shoulder pad adjustably engaged with the flexible chain. Advantageously, the flexible chain is looped through the flexible shoulder strap and interlinked therewith such that the flexible chain rests along a first axis during use and the flexible shoulder strap rests along a second axis during use. Notably, the first axis intersects the second axis such that the flexible chain overlaps the flexible shoulder strap.