Back rest assembly
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Solution Overview
Problem
Existing back rest assemblies for beds lack flexibility and adjustability, particularly in supporting a user's back at various angles and accommodating different bed configurations, with limited options for side mounting and height adjustment.
Innovation Solution
A back rest assembly comprising a base, a riser, and a back rest that is pivotably supported by the riser, allowing the back rest to adjust between horizontal and inclined positions, with an actuator for automatic adjustment and a height adjustment mechanism, enabling mounting on either side of the bed and accommodating different mattress thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a back rest assembly is designed with fixed mounting position and height, then the structure is simple, but the adaptability to different bed configurations and user needs is poor
Solution Approach 1:
The back rest assembly is designed with a base that can be mounted on either side of the bed, and a riser with height adjustment mechanism, allowing the same device to serve multiple mounting configurations and height requirements, thereby achieving multi-functionality without requiring separate devices for each configuration
Solution Approach 2:
The back rest incorporates a pivotable connection between the riser and back rest, along with an actuator, enabling the back rest to dynamically adjust between horizontal and inclined positions. This dynamic adjustment capability allows the device to adapt to different user needs and bed configurations while maintaining a relatively simple base structure
2Ease of operation
If the back rest is made fixed in position and angle, then the device complexity is reduced, but the ease of operation and user comfort are compromised
Solution Approach 1:
The patent replaces manual mechanical adjustment with an actuator that can automatically position the back rest at desired angles. This substitution reduces the physical effort required for operation while maintaining a relatively simple mechanical structure through the pivotable connection and actuator mechanism
Solution Approach 2:
The pivotable connection between the riser and back rest, combined with the actuator, creates a dynamic adjustment system that allows easy transition between horizontal and inclined positions. This dynamic design enables simple operation without requiring complex multi-stage adjustment mechanisms
3Adaptability or versatility
If the back rest assembly lacks height adjustment capability, then the structure remains simple, but the adaptability to different mattress thicknesses is reduced
Solution Approach 1:
The riser is designed with a height adjustment mechanism that allows it to extend or retract vertically, accommodating different mattress thicknesses. This dynamic height adjustment capability enables the same device to work with various bed configurations without requiring multiple devices of different heights
Solution Approach 2:
The height-adjustable riser allows the back rest assembly to universally accommodate different mattress thicknesses and bed types. By incorporating this adjustment capability into a single device, the system achieves multi-functionality without requiring separate assemblies for each mattress thickness
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 assembly provides enhanced support and adjustability for a user's back, allowing for comfortable use on either side of the bed and accommodating various bed configurations, with the actuator ensuring easy switching between positions and the height adjustment mechanism accommodating different mattress thicknesses.
Implementation Method 1
the back rest is pivotable about a lateral first axis fixed relative to the riser between a horizontal position in which the back rest is oriented generally horizontally, and at least one inclined position in which the back rest is inclined relative to the resting surface
Data Source
AI summary
A back rest assembly includes a base assembly mountable adjacent a resting surface and a back rest having a supported side pivotably supported by the base assembly and an unsupported side spaced laterally apart from the supported side along a lateral axis. When the base assembly is mounted, the back rest is positionable over the resting surface and selectively pivotable about the lateral axis for adjusting an angular position of the back rest relative to the resting surface.