Backpack Attachment Unit for Secure Trolley Coupling
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Solution Overview
Problem
Existing backpack trolleys modify the traditional structure of the backrest and shoulder straps, causing discomfort and inconvenience when used, and lack adjustable attachment mechanisms.
Innovation Solution
An attachment unit that connects a backpack to a carrying trolley without altering the backpack's structure, using snap-coupling and adjustable straps for ergonomic carrying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a strip of fabric is added to the backrest to attach the backpack to the trolley, then the backpack can be securely connected to the carrying trolley, but the traditional structure of the backrest is modified and the perimeter parts protrude creating discomfort when carried on shoulders
Solution Approach 1:
The attachment system is divided into separate components: the original backpack structure remains unchanged, while a separate attachment mechanism (strip of fabric with snap buttons) is introduced. This allows the backpack to maintain its traditional ergonomic design for shoulder carrying while adding secure attachment capability to the trolley through distinct attachment elements.
2Reliability
If the backpack structure is modified to enable attachment to the trolley, then secure connection is achieved, but the original ergonomic design for shoulder carrying is compromised
Solution Approach 1:
The backpack is designed with dual functionality: it can be carried on shoulders using the original backrest and shoulder straps, or attached to a carrying trolley using the additional attachment mechanism. The snap buttons and strip of fabric enable the backpack to serve multiple purposes without compromising its original ergonomic design for shoulder carrying.
3Ease of operation
If snap buttons are used for attachment, then quick connection and disconnection is enabled, but the attachment mechanism adds complexity to the backpack structure
Solution Approach 1:
The attachment mechanism is extracted as a separate, minimal addition to the backpack structure. Rather than integrating complex attachment systems into the backpack's core structure, simple snap buttons are attached to existing elements (shoulder straps or backrest), enabling quick connection and disconnection with minimal impact on the overall backpack design.
Data Source
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AI summary
An attachment unit (100) configured to connect a piece of luggage (1000) to a carrying trolley (1) arranged for carrying the piece of luggage (1000) and a carrying system (10000) comprising this attachment unit (100) are disclosed wherein the attachment unit (100) comprises a body (101) provided with: - a main part (102) configured to encompass a portion (11, 26) of the carrying trolley (1) so as to reversibly connect the attachment unit (100) to the carrying trolley (1); and - attachment means (103) fitted to the main part (102) and configured to engage connecting means (1002) of the piece of luggage (1000) so as to reversibly connect the attachment unit (100) to the piece of luggage (1000). When the main part (102) encompasses the portion (11, 26) of the carrying trolley (1) and the attachment means (103) engages the connecting means (1002) of the piece of luggage (1000), the attachment unit (100) is in a coupled configuration (E) in which the attachment unit (100) is attached both to the piece of luggage (1000) and to the carrying trolley (1).