Portable Structure Handle Connector Design to Reduce Local Stress
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Solution Overview
Problem
Existing portable tables and chairs often lack optimal handle connections, leading to high local stress and potential damage, which shortens their service life and may pose safety issues during use.
Innovation Solution
A portable structure design featuring a main body with a ridge and connectors that include a handle attachment system with flexible materials and strategically formed notches and recesses to distribute load and reduce stress, enhancing connection strength and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If handles are equipped on portable tables and chairs, then ease of carrying is improved, but high local stress is generated during use which can cause damages and shorten service life
Solution Approach 1:
The connector is divided into multiple components: a first connecting piece connected to the ridge, a handle connecting piece, and at least one opening. This segmentation allows the handle to pass through and be securely attached while distributing stress across multiple connection points rather than concentrating it at a single location.
Solution Approach 2:
The handle connection is transitioned from a surface-level attachment to a three-dimensional configuration where the handle passes through the connector body. The first attachment portion passes through the opening and surrounds the handle connecting piece, creating a multi-dimensional connection that resists stress from multiple directions.
2Device complexity
If simple handle connections are used, then device complexity is reduced, but high local stress causes damages and safety issues
Solution Approach 1:
The handle's first attachment portion is nested within the connector structure by passing through the opening and surrounding the handle connecting piece. This nested configuration provides a secure, multi-layered connection that enhances reliability without requiring excessively complex external structures.
Solution Approach 2:
The handle connecting piece acts as an intermediary element between the ridge (first connecting piece) and the handle (second attachment portion). This intermediate component distributes and transfers forces between the rigid ridge structure and the flexible handle, reducing stress concentration and improving overall connection reliability.
Data Source
AI summary
A portable structure includes a main body, a ridge coupled or formed with the main body and a supporting assembly with a mounting bar disposed adjacent to the ridge. The portable structure also includes a handle coupled to one or more of the ridge, main body and mounting bar by first and second connectors. Each connector includes a first connecting piece connected to the ridge and a second connecting piece coupled or formed with the first connecting piece. The handle includes first and second attachment portions connected to the first and second connectors, respectively, and a gripping portion between the first and second attachment portions to facilitate grasping of the handle.