Pocket-spring mattress comprising openings in the casing material
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Solution Overview
Problem
Existing pocket spring mattresses face challenges in producing thin mattresses due to spring length limitations, leading to increased manufacturing complexity and cost, as well as reduced comfort and longevity issues related to moisture retention and hygiene.
Innovation Solution
The mattress features interconnected coil springs with casing portions joined through a joint that includes an opening, enhancing aeration and ventilation, while maintaining the bias and comfort properties of previous designs, and utilizing a toroid-shaped casing with a symmetric joint and controlled welding points to ensure strength and adjustability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the length of the springs is reduced to make thin mattresses, then the mattress thickness is reduced, but the spring turns in the casing and comfort deteriorates
Solution Approach 1:
The spring is enclosed within a casing structure that provides guidance and constraint. The casing acts as a protective shell that prevents the spring from turning while allowing vertical compression, enabling thin mattress design without compromising spring functionality or comfort
Solution Approach 2:
The spring casing is made of flexible material that can deform with spring compression while maintaining its confining function. This flexible shell structure allows the spring to operate effectively in a reduced thickness environment without turning or losing resilience
2Length of stationary object
If the length of the springs is reduced, then the mattress thickness is reduced, but manufacturing becomes more expensive and complicated
Solution Approach 1:
The spring casing serves multiple functions simultaneously: it encloses and guides the spring, prevents turning, provides structural support for thin mattress design, and facilitates manufacturing through standardized production processes. This multi-functionality reduces overall system complexity despite reduced spring length
3Length of stationary object
If the spring length is reduced, then the mattress thickness is reduced, but the mattress becomes stiffer
Solution Approach 1:
The spring casing modifies the mechanical parameters of the spring system by providing lateral constraint and guidance. This changes the spring's deformation mode from potential lateral buckling to controlled vertical compression only, maintaining appropriate stiffness characteristics despite reduced spring length
4Length of stationary object
If casing portions are connected through the spring, then the mattress becomes compact and thin, but aeration and ventilation are insufficient
Solution Approach 1:
The joint connecting the casing portions is designed with porous or permeable characteristics that allow air and moisture vapor to pass through. This maintains the compact thin mattress structure while providing necessary aeration and ventilation to prevent moisture buildup and maintain hygiene
5Reliability
If moisture is retained in the mattress, then hygiene deteriorates, but the mattress structure becomes damp
Solution Approach 1:
The joint structure provides extraction pathways for moisture vapor to escape from the mattress interior to the exterior environment. By creating these escape routes through the connected casing portions, moisture is actively removed from the mattress structure, maintaining hygiene and preventing dampness accumulation
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 design improves moisture removal, maintains hygiene, enhances comfort and sleeping quality, and extends the mattress's lifespan by preventing moisture buildup and reducing the risk of allergens and odors, while allowing for customizable thickness and support regions.
Implementation Method 1
By providing an opening in the interconnection of the casing portions through the springs the aeration and ventilation through the mattress is improved
Implementation Method 2
the aeration and ventilation through the mattress is improved. A significant volume of moisture leaves the body during sleep. Thanks to the improved aeration/ventilation, this moisture will be taken care of more efficiently
Data Source
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AI summary
A spring mattress is disclosed, comprising a plurality of interconnected coil springs (1) enclosed in casings (2), thereby forming a pocket spring mattress. For at least one of the springs, the casing portions arranged at the ends of the spring being moved towards each other, through the spring, and interconnected with the aid of connecting means, such as a weld. Further, the casing portions at the ends of the spring comprise an opening through the spring. Hereby, the casing forms a toroid or doughot shape enclosing the spring.