Adjustable Collapsible Chair Canopy for Shade Without View Blockage
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Solution Overview
Problem
Conventional collapsible chairs lack a convenient means for storage and transportation, and their canopy attachments are unadjustable, failing to provide adequate shade and protection from various angles of sunlight and precipitation.
Innovation Solution
A collapsible canopy structure with adjustable cantilever arms and a flexible covering that can be securely attached to a chair, allowing for angle adjustment and easy deployment/stowage, featuring a mounting fitting for upright members and a detent mechanism for retaining positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a collapsible chair is stored in a storage sleeve, then the chair can be transported, but the storage sleeve is unwieldy and difficult to use
Solution Approach 1:
The canopy structure is merged with the chair back assembly, where the canopy support arms are integrated into the chair's existing back support structure. This eliminates the need for separate storage sleeves by utilizing the chair's own structural components for both support and storage functions.
Solution Approach 2:
The chair back assembly serves multiple functions: it provides structural support for the chair, supports the canopy structure, and acts as the storage mechanism when the canopy is collapsed. This multi-functionality eliminates the need for dedicated storage sleeves.
2Object-affected harmful factors
If a conventional canopy attachment is used, then shade is provided, but the canopy cannot be adjusted to protect from sunlight and precipitation approaching from various angles
Solution Approach 1:
The canopy support arms are designed with pivot joints that allow dynamic adjustment of the canopy angle. The arms can be positioned at different angles relative to the chair back, enabling the canopy to be oriented to protect against sunlight and precipitation from various directions rather than being fixed in a single position.
Solution Approach 2:
The canopy structure allows change in the angular parameter of the support arms relative to the chair back. By adjusting the angle of the cantilever arms, the canopy can be optimized for different weather conditions and orientations, providing versatile protection.
3Object-affected harmful factors
If the canopy is lowered to shade the occupant, then protection from sun is provided, but the occupant's view is obstructed
Solution Approach 1:
The adjustable arm structure allows dynamic positioning of the canopy at optimal angles that provide shade without significantly obstructing the occupant's forward view. The canopy can be angled to extend backward rather than downward, maintaining visibility while providing protection.
4Ease of operation
If a collapsible canopy structure is designed, then convenient storage is achieved, but the structural complexity increases
Solution Approach 1:
The canopy structure is segmented into modular components: the canopy covering, support arms, pivot joints, and attachment points. This segmentation allows each component to be independently manufactured and assembled, simplifying the overall design while enabling collapsible functionality.
Solution Approach 2:
When the canopy is collapsed, the support arms are positioned to nest within or alongside the chair back structure, and the canopy covering folds into a compact form. This nesting arrangement minimizes storage space requirements without requiring additional storage components.
Data Source
AI summary
A canopy for an article of furniture, such as a chair, having a seat portion and a back portion. The canopy includes a pair of arm structure and a flexible covering extending therebetween. Each arm structure includes an upright member including a proximal end portion extending from the back portion of the chair, a distal end portion, and a medial portion extending therebetween. The arm structure also includes a cantilever member pivotable about the distal end portion and a brace pivotably attached to the cantilever member and selectively positionable along the medial portion, thereby providing angle adjustment of the cantilever member relative to the seat portion. The flexible covering may include a plurality of panel sections, extending between the pair of arm structures and retained thereto by a pair of tethers or tabs each connecting to one of the cantilever members.