Insert of chair back handling assembly of a chair and handling assembly including said insert
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Solution Overview
Problem
Traditional chairs lack the ability to support dynamic movements, leading to prolonged static posture issues such as circulation problems, pain, and decreased well-being, with existing 'dynamic seat' solutions being costly and limited in mobility.
Innovation Solution
A movement assembly insert for a seatback that allows rotation on multiple axes, combined with resilient means to ensure smooth and reversible movement, providing greater freedom and comfort while being economical and simple to manufacture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional chairs are used, then manufacturing cost is low, but user comfort and mobility are poor due to inability to support dynamic movements
Solution Approach 1:
The backrest is divided into multiple independent segments that can rotate relative to each other on different axes. This segmentation allows each segment to move independently, providing dynamic movement support while keeping the overall structure relatively simple and cost-effective to manufacture.
Solution Approach 2:
The chair backrest transitions from a static structure to a dynamic one by incorporating rotation mechanisms on multiple axes. The resilient means enable the backrest segments to move dynamically in response to user movements, improving adaptability without requiring complex active control systems.
2Adaptability or versatility
If dynamic seat systems with multiple rotation axes are implemented, then user mobility and comfort are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The backrest is divided into multiple independent segments that can rotate relative to each other on different axes. This segmentation allows each segment to move independently, providing dynamic movement support while keeping the overall structure relatively simple and cost-effective to manufacture.
Solution Approach 2:
Resilient means act as intermediaries between the backrest segments and the rotation mechanisms. These resilient elements simplify the connection structure by providing both mechanical support and movement control in a single component, reducing the number of separate parts needed for each rotation axis.
3Ease of operation
If resilient means are added to control rotation, then movement smoothness and reversibility are improved, but manufacturing complexity increases
Solution Approach 1:
The resilient means are integrated directly into the rotation mechanism structure, combining the cushioning function and the rotation control function into a single structural element. This merging eliminates the need for separate cushioning components while maintaining manufacturing simplicity.
Solution Approach 2:
The resilient means automatically provide smooth and reversible movement control through their inherent elastic properties. The system self-regulates the rotation motion without requiring external control mechanisms, sensors, or actuators, thereby maintaining ease of manufacture while improving ease of operation.
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 enhances user mobility and comfort by allowing the back to move on two axes with controlled rotation, reducing discomfort and improving well-being during prolonged seating without the high costs associated with traditional dynamic seat designs.
Implementation Method 1
resilient means provided on the first and/or second face and which are susceptible to compression in a direction opposite or equal to a rotation direction of the insert on the at least two axes defined by the combining means
Data Source
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AI summary
An insert of a movement assembly of a seatback, wherein said insert is plate-shaped and comprises a first face and a second face opposite the first face, is described. The insert further comprises combining means configured to combine the insert with a blade and a frame of the seatback and which define at least one axis of the insert on which the insert is rotatable in response to a stress imparted thereon. The insert further comprises resilient means provided at the first face and/or at the second face, which are susceptible to reversible compression in a direction parallel to or coincident with the first face and/or in a direction incident to the second face. A movement assembly of a seatback, comprising a blade, a frame and the insert mentioned above, is further described. The frame is rotatable, by compression of the resilient means, with respect to said blade on the at least one axis of the insert in response to a respective stress exerted by a user.