Net-type heat insulation care bed
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Solution Overview
Problem
Nursing beds with net-shaped fabrics face deformation and damage due to increased weight when patients change postures, leading to plastic elongation and loss of shape, especially when used for extended periods with patients suffering burns, bed sores, or incontinence.
Innovation Solution
A nursing bed design featuring a semiautomatic washing function, an auxiliary load-bearing layer with adjustable spacing, and a grid support system that distributes weight evenly, preventing excessive stretch of the net-shaped fabric and incorporating interwoven strips with waterproof adhesive for durability, along with a heat-insulation and water-draining bottom cover for comfort and hygiene.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the net-shaped fabric is used to provide breathability and flexibility, then patient comfort is improved, but the fabric is prone to plastic elongation and deformation when patients change postures
Solution Approach 1:
The support function is segmented between the net-shaped fabric and the auxiliary load-bearing layer with discrete support points (holes). The auxiliary load-bearing layer contains an array of holes that concentrate support forces at specific points, preventing distributed stress that causes fabric deformation while maintaining overall comfort.
Solution Approach 2:
The bed combines the net-shaped fabric with the auxiliary load-bearing layer made of rigid and elastic bodies to create a composite structure. This composite system leverages the breathability and flexibility of the fabric while the auxiliary layer provides structural support to prevent plastic elongation.
2Use of energy by moving object
If the net-shaped fabric is made with thin warp and weft for breathability, then air circulation is improved, but the fabric strength is reduced and it deforms easily under increased weight
Solution Approach 1:
The support function is segmented to the auxiliary load-bearing layer with discrete holes, allowing the fabric itself to remain thin and breathable. The auxiliary layer bears the mechanical load at specific points, compensating for the reduced fabric strength.
Solution Approach 2:
The auxiliary load-bearing layer acts as an intermediary between the patient's weight and the net-shaped fabric. It transfers and distributes the load through its rigid and elastic bodies, protecting the thin fabric from excessive stress while maintaining breathability.
3Force
If the auxiliary load-bearing layer is positioned close to the net-shaped fabric for maximum support, then weight distribution is improved, but the fabric experiences excessive stretching and deformation
Solution Approach 1:
The auxiliary load-bearing layer is positioned at a predetermined distance below the net-shaped fabric to provide cushioning support before the fabric experiences excessive stretching. This pre-positioned support layer absorbs and distributes loads, preventing the fabric from undergoing plastic deformation.
Solution Approach 2:
Instead of positioning support directly adjacent to the fabric in the vertical dimension, the solution introduces a spatial separation and uses the auxiliary layer's horizontal array of holes to distribute support forces across multiple points, reducing concentrated stress on the fabric.
4Temperature
If the bottom cover is solid for heat insulation, then thermal comfort is improved, but drainage and cleaning are difficult
Solution Approach 1:
The bottom cover is designed with a porous structure containing through-holes that enable drainage while maintaining heat insulation. The porous configuration allows fluid passage for hygiene purposes while the surrounding material provides thermal insulation, resolving the contradiction between solid insulation and drainage capability.
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
The solution maintains the shape and integrity of the net-shaped fabric, prevents damage from prolonged use, and ensures patient comfort by distributing weight effectively and providing easy cleaning and hygiene features.
Implementation Method 1
The auxiliary load-bearing layer comprises a rigid body and an elastic body
Implementation Method 2
distributes weight evenly, preventing excessive stretch of the net-shaped fabric
Implementation Method 3
The insulation material layer comprises closed space contacting with patients
Implementation Method 4
a spray pipe; the spray pipe is disposed between the net-shaped fabric and the auxiliary load-bearing layer
Implementation Method 5
The heat-insulation and water-draining bottom cover comprises a reinforced layer, an insulation material layer, and a waterproof layer on the inner surface
Implementation Method 6
a constant temperature and humidity device is disposed in the closed space to supply constant temperature and humidity conditions
Data Source
Figure 1
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Figure 3
AI summary
A net-type heat insulation care bed mainly comprises a bed frame (1), a net-shaped fabric (2), a sprinkler pipe (3), a heat insulation drainage bottom cover (4), and a base (5). The heat insulation drainage bottom cover (4) is disposed on the lower portion of the bed frame (1). At least two edges of the net-shaped fabric (2) are hung between the two corresponding opposite edges of the bed frame (1) to form a mutual positioning structure. An auxiliary bearing layer (6) is disposed below the net-shaped fabric (2). The auxiliary bearing layer (6) is mounted in an auxiliary bearing frame (61), and is mounted on the inner side of the bed frame (1) by means of the auxiliary bearing frame (61). A positioning structure with an adjustable spacing is formed between the auxiliary bearing layer (61) and the bed frame (1). According to the net-type heat insulation care bed, the auxiliary bearing layer (6) is additionally disposed on the inner side of the bed frame (1) below the net-shaped fabric (2); by means of the auxiliary bearing layer (6), auxiliary support is provided for a patient when the local gravity is increased caused by changing a sleeping posture; the gravity generated in a local part is prevented from damaging the organization structure of the net-shaped fabric (2), and the patient is effectively supported.