Foldable Bed Chair With Attached Insulating Cover
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Solution Overview
Problem
Folding bed chairs designed for anglers become bulky due to the need to carry a separate sleeping bag, as the padded mattress prevents the chair from folding when the bag is left on it, increasing the number and weight of items to carry.
Innovation Solution
A thermally insulating cover is secured to the mattress periphery with a releasable fastener, allowing the bed chair to fold with the cover in place, and the mattress provides sufficient thermal insulation to omit the sleeping bag's lower half, with optional layers for adjustable insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a separate sleeping bag is carried for thermal insulation, then thermal comfort is improved, but the quantity and weight of equipment increases
Solution Approach 1:
The patent combines the sleeping bag's thermal insulation function with the bed chair's mattress by securing an insulating cover to the mattress periphery using a releasable fastener. This integration eliminates the need to carry a separate sleeping bag, as the mattress assembly itself provides both seating/sleeping surface and thermal insulation.
Solution Approach 2:
The mattress is designed to serve multiple functions: as a seating surface during the day, as a sleeping surface at night, and as a thermal insulation layer when the insulating cover is attached. This multi-functionality reduces the total equipment needed while maintaining comfort and warmth.
2Ease of operation
If a padded mattress is used for comfort, then comfort is improved, but the bed chair cannot be folded when the sleeping bag is left on it
Solution Approach 1:
The insulating cover is permanently or semi-permanently attached to the mattress using a releasable fastener system, creating an integrated assembly that folds together with the mattress. This eliminates the problem of the sleeping bag interfering with folding, as the insulation layer is now part of the mattress structure itself.
Solution Approach 2:
The releasable fastener allows the insulating cover to be attached or detached as needed, providing dynamic adaptability. When folded for transport, the cover remains attached to the mattress and folds with it; when in use, the cover can be adjusted or removed if desired.
3Temperature
If excessive thermal insulation is provided by mattress and sleeping bag, then warmth is improved, but the bed becomes uncomfortably hot
Solution Approach 1:
The releasable fastener system allows the insulating cover to be easily attached or detached, enabling the user to adjust the level of insulation dynamically. If the user feels too hot, they can remove the cover or use only part of it, providing flexible thermal management.
Solution Approach 2:
The insulating cover is secured around the periphery of the mattress, providing insulation where it is most needed (at the edges and ends) while allowing the center area to remain more breathable. This localized insulation approach prevents excessive heat buildup while maintaining warmth.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This combination reduces bulk and weight, allowing anglers to carry fewer items while maintaining comfort and adjustable thermal insulation for varying weather conditions.
Implementation Method 1
a thermally insulating cover for covering the occupant of the bedchair is secured to the mattress around its periphery by means of a releasable fastener
Implementation Method 2
the padding used to improve the comfort of the mattress provides sufficient thermal insulation, making the bottom half of the sleeping bag not only unnecessary but also undesirable
Data Source
Figure 1~2
AI summary
A foldable bed chair 10 is disclosed having a padded mattress 16 and a thermally insulating cover 24 directly secured to the mattress around its periphery by means of a releasable fastener 26. The bed chair can be folded away with the insulating cover 24 still in place. The invention thus provides a combined bed chair and sleeping bag in which the mattress 16 of the bed chair serves as the lower half of the sleeping bag.