Internal Handle Bag Design for Cover Attachment
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Solution Overview
Problem
Conventional bags face challenges in attaching a cover due to the external handle, which interferes with the cover's attachment and protection, leading to material wear and limited design adaptability.
Innovation Solution
The handle is positioned inside the bag and guided through handle openings on the top side, allowing for individual design customization and protection from external influences, with detachable elements and edge retention to prevent material wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the handle is attached to the outside of the bag, then the handle is easily accessible and provides good structural support, but the handle interferes with the attachment of a cover to the bag body
Solution Approach 1:
The handle is inverted from the conventional external attachment to internal attachment. The handle is now attached to the interior wall of the bag body and led out through handle openings in the cover, reversing the traditional arrangement to eliminate interference with cover attachment while maintaining accessibility.
Solution Approach 2:
The handle attachment is moved from the external surface (2D plane) to the internal volume (3D space). By attaching the handle to the interior wall and routing it through openings, the solution transitions from a surface-level attachment to a volumetric arrangement that accommodates both handle functionality and cover attachment.
2Strength
If the handle is attached to the outside of the bag, then the handle structure is simple and robust, but the material at the attachment point experiences increased wear and potential tearing
Solution Approach 1:
The handle attachment point is extracted from the vulnerable external surface and relocated to the protected interior wall. By removing the attachment from the external material surface and placing it internally, the solution eliminates the direct exposure to external wear factors while maintaining structural strength.
Solution Approach 2:
The edge retention element is introduced as a protective feature before wear can occur. This reinforcement at the handle opening edge prevents material tearing and wear in advance, cushioning the material against the harmful effects of friction and mechanical stress.
3Adaptability or versatility
If the handle is positioned inside the bag, then the cover can be easily attached and the bag can be customized, but the handle may rotate or move excessively without proper constraint
Solution Approach 1:
The edge retention element serves as an intermediary component between the handle opening and the handle itself. This intermediary structure provides the necessary constraint and stability to the handle while allowing the cover to be easily attached, mediating between the conflicting requirements of stability and adaptability.
Data Source
Figure 1a~1b
Figure 2
Figure 3
AI summary
The invention relates to a bag (2) for transporting objects, comprising: - a body (6) with a bottom (8), a top (10) opposite the bottom (8), and a wall (12) connecting the bottom (8) and the top (10), wherein the body (6) has an interior (14) accessible via an interior opening (16) on its top (10), and - a releasable closure means (18) configured to close the interior opening (16) of the body (6), characterized by: - a handle (30, 32) with a first handle end (34) and a second handle end (36), each arranged in the interior (14) on the body (6), and - a first handle opening (52) and a second handle opening (54) through which the handle (30, 32) is led out of the interior (14).