Pocket Spring Mattress with Toroidal Casing Openings for Aeration
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Solution Overview
Problem
Existing pocket spring mattresses face challenges in producing thin mattresses without compromising comfort and durability, as reducing spring length leads to instability and increased manufacturing costs, limiting their use in applications like overlay mattresses and seat cushions.
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 resilience of the springs, allowing for thinner and more hygienic designs.
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 stability deteriorates and the spring tends to turn in the casing
Solution Approach 1:
The invention introduces a new dimensional constraint by connecting casing portions at the ends of springs through joints, creating a structural framework that prevents spring rotation. This additional dimensional constraint stabilizes short springs without increasing mattress thickness.
Solution Approach 2:
The invention changes the structural parameters of the spring system by adding interconnections between casing portions. This modifies the boundary conditions of the springs, providing rotational stability while maintaining the reduced length necessary for thin mattresses.
2Length of stationary object
If the length of the springs is reduced, then the mattress thickness is reduced, but the manufacturing cost increases due to requiring more springs
Solution Approach 1:
The invention merges multiple functions into the spring assembly: the springs provide support while the interconnecting joints provide structural stability. This combined system allows using fewer, longer springs instead of many short springs, reducing manufacturing cost.
Solution Approach 2:
The joint structure serves multiple functions: it connects casing portions, prevents spring rotation, and provides structural framework. This multi-functionality reduces the need for additional components and simplifies manufacturing.
3Length of stationary object
If the length of the springs is reduced, then the mattress thickness is reduced, but the mattress stiffness increases
Solution Approach 1:
The interconnecting joints add a new dimensional element to the spring system, creating a framework that distributes loads across multiple springs. This reduces the stiffness of individual springs while maintaining overall structural integrity.
Solution Approach 2:
The invention segments the spring system into interconnected modules with joints between them. This segmentation allows each spring to move more independently, reducing overall mattress stiffness while maintaining thin profile.
4Length of stationary object
If casing portions are connected through the spring, then the mattress becomes thin and compact, but the aeration and ventilation through the mattress is reduced
Solution Approach 1:
The invention introduces porous openings in the joint structure, allowing air and moisture to pass through. This maintains the compact thin design while enabling ventilation to prevent moisture accumulation and improve hygiene.
Solution Approach 2:
The openings in the joints act as intermediaries that allow moisture and air to pass through the mattress structure. This mediator function enables ventilation without compromising the structural integrity or thin profile of the mattress.
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
Improved aeration and ventilation lead to better moisture management, reduced risk of mold and bacteria growth, extended longevity, and enhanced comfort and hygiene, making the mattress suitable for various applications.
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. 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
AI summary
A spring mattress is disclosed, comprising a plurality of interconnected coil springs enclosed in casings, 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 doughnut shape enclosing the spring.