Adjustable Chair Headrest Clamp Structure for Portable Seating
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Solution Overview
Problem
Lightweight, portable seating such as folding lawn chairs and deck chairs often lack head support, requiring a removable and adjustable headrest solution for enhanced comfort.
Innovation Solution
A portable adjustable headrest with a headrest support bar, rosettes, and clamp bars that allow for vertical and width adjustments, along with a cushioned member for customizable fit and comfort, securely attaches to the seatback of casual seating using a combination of friction-fit and optional fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a headrest is added to lightweight portable seating, then head support and comfort are improved, but device complexity and weight increase
Solution Approach 1:
The headrest is divided into multiple independent components: clamp bars for attachment, a support bar for structure, and a cushioned member for comfort. This segmentation allows each component to perform its specific function efficiently while keeping the overall design simple and modular.
Solution Approach 2:
The headrest incorporates adjustable features including telescoping extensions on clamp bars for width adjustment and vertical positioning capability along the seatback. These dynamic elements allow the headrest to adapt to different chair sizes and user preferences without requiring a completely different design for each scenario.
2Adaptability or versatility
If the headrest is made adjustable for different chair sizes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The clamp bars are designed with telescoping extensions that allow the same headrest structure to accommodate various chair widths and types. This universal design approach enables a single headrest model to fit multiple chair sizes without requiring multiple specialized versions.
Solution Approach 2:
The telescoping extensions of the clamp bars utilize a nested structure where one portion of the clamp bar fits within another, allowing compact storage when not in use while providing extended reach when needed to accommodate different chair dimensions.
3Ease of operation
If friction-fit attachment is used, then ease of installation is improved, but reliability of attachment may worsen
Solution Approach 1:
The attachment system allows for dynamic adjustment during installation, enabling the user to tighten or loosen the clamp bars as needed. This dynamic capability ensures that the friction-fit attachment can achieve sufficient security for the specific application while maintaining ease of installation and removal.
Data Source
AI summary
A portable adjustable headrest that is releasably secured to the seatback of a casual seating. The headrest generally includes a headrest support bar, and a pair of rosettes that attach to a pair of vertical arms of the headrest support bar for vertical adjustment. First and second clamp bars having telescoping extensions for receipt in channels defined in each of the rosettes. Each clamp bar further includes a hook member opposite the telescoping extension, that define a slot for receipt of the chair's seatback frame. The clamp bars can each be selectively positioned in order to horizontally adjust the width of the headrest such that the clamp bars, as a whole is extensible and retractable to suit the needs of both wider designed chairs and more narrowly designed chairs. A cushioned member having a pocket sized for receiving an upper portion of the support bar, and further including an exterior surface and interior foam layer.