Ergonomically adjustable bed
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Solution Overview
Problem
Conventional reclining devices lack ergonomic adjustability, often requiring significant effort to change positions and may cause back tension due to improper axis of rotation, and existing ergonomic loungers are either non-adjustable, complex, or require a power connection, making them unsuitable for outdoor use.
Innovation Solution
A reclining device with a variable seat depth adjustment system comprising interconnected side parts, a backrest, and a foot part, utilizing self-locking mechanisms and guide rods for continuous adjustment between horizontal and ergonomic sitting positions, allowing users to change positions effortlessly without getting up.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional non-ergonomic couches are used, then the structure is simple and inexpensive, but the adjustability is limited and causes back tension
Solution Approach 1:
The reclining device is divided into multiple independently adjustable segments: backrest element, seat element, and foot part element. Each segment can be adjusted separately along its own axis, allowing continuous position variation without requiring complex integrated mechanisms. This segmentation enables ergonomic adaptability while keeping individual component structures simple.
Solution Approach 2:
The device employs dynamic adjustment capabilities where each element (backrest, seat, foot part) can be continuously repositioned along its respective axis of rotation or translation. The bearing blocks enable smooth rotational and translational movements, transforming the static conventional couch into a dynamically adaptable ergonomic system.
2Adaptability or versatility
If existing ergonomic loungers are used, then ergonomic comfort is improved, but they require power connection or are non-adjustable
Solution Approach 1:
The device uses self-locking mechanisms where the bearing blocks automatically maintain their position through friction and geometric constraints. Once adjusted to a desired position, each element locks in place without requiring continuous power input or manual effort to maintain the position. This eliminates the need for power connections while preserving ergonomic adjustability.
3Ease of operation
If conventional couches are used, then manufacturing is simple, but position changes require significant user effort
Solution Approach 1:
The device changes the mechanical parameters of adjustment by introducing bearing blocks with optimized friction characteristics and geometric configurations. These parameter changes reduce the force required to initiate and maintain position changes, making the system easier to operate while remaining manufacturable with standard components.
4Object-affected harmful factors
If conventional reclining devices are used, then structure is simple, but they cause back tension due to improper rotation axis
Solution Approach 1:
The device employs asymmetric axis configurations for each element rather than symmetric or uniform rotation points. The backrest rotates along a first axis, the seat along a second axis, and the foot part along a third axis, with each axis specifically positioned to align with natural body contours. This asymmetric arrangement eliminates back tension by distributing forces ergonomically, while the modular nature keeps the overall structure manageable.
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
Enables infinite variable adjustment between sitting and lying positions with minimal user effort, maintaining ergonomic comfort without the need for continuous action, and can be manufactured simply and inexpensively for various body sizes, including outdoor use without a power connection.
Implementation Method 1
The first bearing block (102) is locked by self-locking in a locking cutout (61) of at least one outer side part (60)
Data Source
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AI summary
The present invention relates to a reclining device for variably adjusting the position between a substantially horizontal position and an ergonomic seated position, which has at least one right and one left side section, each of which is composed of at least one outer side section (60) and one inner side section (80), a backrest element (90) and a seat surface element (91), which are rotatably connected to one another via a first bearing block (102), and a foot section element (92), which is rotatably connected to the seat surface element (91) via a second bearing block (103), wherein the foot section element (92) is mounted between the right and left side sections via a third bearing block (104), and wherein the first, second and third bearing blocks (102, 103, 104) are each mounted in a corresponding guide in the right and left side sections in such a way as to be translationally movable.that the backrest element (90), the seat element (91), and the footrest element (92) are variably adjustable between a substantially horizontal position and an ergonomically seated position, and wherein the first bearing block (102) is locked by self-locking mechanism via a locking slide (70) in a locking recess (61) in at least one outer side panel (60), and wherein the self-locking mechanism can be released by the user via a hand knob, and wherein, furthermore, the self-locking mechanism is applicable in conjunction with special seat parts (530 and 531) with guide slots (536 and 537) and the guide rods (532 and 533) in conjunction with the locking slide (535) for stepless seat length adjustment.