Rotary Coupler Shoulder Strap Assembly for Bag Stability
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Solution Overview
Problem
Conventional shoulder bags with fixed straps tend to slip down when worn while running and lack fashion appeal, making them unsuitable for both functionality and style.
Innovation Solution
A bag design featuring adjustable shoulder straps with a rotary type coupler system, allowing straps to rotate and lock into different configurations for secure fit and aesthetic versatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed shoulder straps are used, then the bag structure is simple, but the straps slip down when running and lack fashion appeal
Solution Approach 1:
The shoulder strap coupling module incorporates a rotary mechanism that allows dynamic adjustment between fixed and rotated positions. The rotary coupling enables the strap to adapt its configuration based on movement intensity, providing stability during running while maintaining simplicity when stationary.
Solution Approach 2:
The coupling module is divided into separate rotatable components including upper plates, lower plates, and connecting pins. This segmentation allows independent rotation of each component to achieve different strap configurations, solving both stability and fashion requirements.
2Adaptability or versatility
If rotatable coupling modules are added to allow strap adjustment, then the bag can be styled in multiple configurations, but the device complexity increases
Solution Approach 1:
The rotary coupling module serves multiple functions: it provides secure locking in fixed positions, enables rotation for adjusted configurations, and maintains structural integrity. This multi-functionality achieves versatility without proportionally increasing complexity.
Solution Approach 2:
The upper plate, lower plate, and connecting pin are merged into an integrated rotary coupling mechanism. This combination allows the system to achieve multiple strap configurations through a unified structure rather than separate adjustment components.
3Reliability
If the shoulder straps are made detachable with locking portions, then the straps can be securely locked, but the ease of operation decreases
Solution Approach 1:
The rotary coupling module features self-locking capability where the connecting pin automatically engages with the upper and lower plates upon rotation. This self-service mechanism reduces the need for manual locking operations while maintaining secure attachment.
Solution Approach 2:
The connecting pin acts as an intermediary element between the upper plate and lower plate. It facilitates easy attachment and detachment by providing a simple insertion and rotation motion, while the locking portions ensure secure connection.
Data Source
AI summary
The present invention provides a bag with adjustable shoulder straps includes: an accommodating unit having an internal space capable of keeping an object; a first upper strap and a second upper strap each being connected to both sides of an upper portion of the accommodating unit, respectively; a first lower strap and a second lower strap each being connected to both sides of a lower portion of the accommodating unit; a first coupling module coupling the first upper strap to the first lower strap to be rotatable and having a first locking portion; and a second coupling module coupling the second upper strap to the second lower strap to be rotatable and having a second locking portion detachably locked to the first locking portion, and a shoulder strap assembly and a rotary type coupler for the bag.