Snap-in Carrying Device for Bags with Segmented Accessories

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Solution Overview

Problem

Conventional carrying devices often become bulky and imbalanced with added handles, limit directional use, and are inconvenient when trying to carry heavier loads or change between carrying modes, such as horizontal and vertical directions, due to unstable attachments like plastic clamps or metal hooks.

Innovation Solution

A multifunctional carrying device with snap-in connecting members that allow for easy attachment and detachment of external accessories like handles, pull rods, straps, and idler wheels, enabling versatile use in both directions without increasing weight or bulk, and can be dismantled for space-saving.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a handle is added to the bag for carrying, then the bag can be carried in vertical direction, but the bag becomes bulky and imbalanced from aesthetic perspective

Engineering Contradiction:

Improvecarrying directionVSAvoidaesthetic appearance

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The carrying device is divided into a base unit attached to the bag and separate external accessories (handle, pull rod, strap, wheel) that can be independently attached or detached. This segmentation allows the bag to maintain its original aesthetic appearance when accessories are not in use, while providing multiple carrying options when needed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The carrying device transitions from a static, fixed handle to a dynamic, adjustable system where accessories can be attached or detached based on carrying needs. The snap-in connecting members enable quick transformation between different carrying configurations, allowing the bag to adapt to vertical carrying, horizontal pulling, or wheeled movement.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If two handles are added on one bag to enable carrying in different directions, then the bag can be carried in multiple directions, but the device complexity increases and the bag becomes bulkier

Engineering Contradiction:

Improvecarrying directionVSAvoidnumber of handles

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Instead of adding multiple specialized handles for different carrying directions, the invention uses a single base unit with universal snap-in connecting members that can accommodate various types of external accessories. This universal interface allows one base unit to replace multiple specialized handles, reducing device complexity while maintaining versatility.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of manufacture

If plastic clamp or metal hook is used to attach external accessories to the bag, then the accessories can be attached, but the attachment is unstable and causes inconvenience when carrying heavier loads

Engineering Contradiction:

Improveattachment methodVSAvoidattachment stability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The snap-in connecting members feature curved or rounded geometries that enable a snap-fit connection mechanism. The male connecting member with protrusion fits into the female connecting member with corresponding recess, creating a stable mechanical interlock that is more reliable than flat clamp or hook attachments, especially when carrying heavier loads.

Inventive Principle:

Principle #14Spheroidality (Curvature)

4Adaptability or versatility

If wheels are added to the bag for horizontal movement, then the bag can be moved horizontally, but the wheels are visible and affect the aesthetic appearance

Engineering Contradiction:

Improvemovement modeVSAvoidaesthetic appearance

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The wheel is separated as an independent external accessory that attaches to the base unit only when needed for horizontal movement. When not in use, the wheel can be detached and stored separately, allowing the bag to maintain its original aesthetic appearance while providing wheeled movement capability when required.

Inventive Principle:

Principle #1Segmentation

5Weight of moving object

If bag is added onto another bag using plastic clamp, then heavier things can be carried, but the plastic clamp conflicts with the opening of the bag and causes inconvenience

Engineering Contradiction:

Improvecarrying capacityVSAvoidconvenience of use

Core Design Contradiction:

Weight of moving objectVSEase of operation

Solution Approach 1:

The base unit with snap-in connecting members serves as an intermediary attachment mechanism between bags. Instead of using clamps that directly contact and conflict with the bag opening, the snap-in system provides a dedicated attachment interface that connects to the base unit, eliminating interference with the bag opening while maintaining secure connection for heavier loads.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS9924770B2Multifunctional carrying device

Publication Date: 2018.03.27 MU GENERATION

AI summary

The present invention discloses a multifunctional carrying device comprising a female connecting member and a male connecting member which the female connecting member and the male connecting member are connected in a snap-in manner; either the male connecting member or the female connecting member being fixed on a bag. The multifunctional carrying device of this invention can be used on both horizontal direction and vertical direction, not just simply adding a bag, but it could change from one application to another application, so as to increase the utility. This invention could be dismantled and saves space, basically it will not increase the weight of the bag and convenient in using.