Connection assembly for a backrest and office or conference chair
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional connection assemblies for backrests in office or conference chairs lack the necessary mobility and ergonomic flexibility, particularly in facilitating complex movements like tilting and rotation, and often require complex manufacturing processes with multiple parts.
Innovation Solution
A connection assembly that resiliently connects a transverse support element to a backrest structural element through a molded or directly connected connection portion, allowing rotatable coupling in a direction perpendicular to the transverse direction, which also acts as a return mechanism, using materials like thermoplastic elastomers and spring elements to enhance mobility and simplify manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional connection assemblies use multiple separate parts for backrest mounting, then the structural integrity is maintained, but the device complexity increases and manufacturing becomes more difficult
Solution Approach 1:
The patent combines multiple separate components (mounting plate, bearing elements, connection elements) into a single integrated connection assembly that is directly molded as one piece. This merging eliminates the need for separate parts while maintaining all necessary structural and functional properties, thereby reducing device complexity without compromising structural integrity.
Solution Approach 2:
The integrated connection assembly performs multiple functions simultaneously: it provides structural mounting support, enables rotational movement, provides resilient cushioning, and facilitates dorsokinetic mobility. By consolidating these functions into a single multi-functional component, the patent reduces the number of parts needed while maintaining comprehensive structural integrity.
2Manufacturing precision
If conventional connection assemblies use multiple separate parts, then each part can be optimized independently, but the manufacturing process becomes more complex and time-consuming
Solution Approach 1:
The patent merges multiple components into a single integrated structure that can be manufactured in one molding process. This eliminates the need for separate manufacturing, assembly, and quality checking of multiple parts, thereby significantly improving manufacturing efficiency and productivity while maintaining the precision needed for optimal performance.
Solution Approach 2:
The patent uses parameter changes in the molding process (such as material selection, molding temperature, pressure, and design of the single-piece structure) to achieve the desired manufacturing precision and functional optimization that previously required multiple separate components, thereby simplifying the manufacturing process and improving productivity.
3Stability of the object's composition
If conventional connection assemblies use rigid connections, then structural stability is maintained, but the ergonomic mobility and freedom of movement are reduced
Solution Approach 1:
The patent incorporates dynamic elements into the connection assembly, including resilient members that allow controlled movement and rotation. These dynamic features enable the backrest to move freely in response to user motion while maintaining structural stability through the integrated design and material properties of the single-piece construction.
Solution Approach 2:
The patent changes the physical parameters of the connection assembly by incorporating elastomeric materials and resilient structures that provide both stability and mobility. The material selection and structural design allow the connection to be both stable structurally and flexible ergonomically, resolving the contradiction between rigidity and movement freedom.
4Ease of manufacture
If conventional connection assemblies lack integrated resilient elements, then manufacturing is simpler, but the dorsokinetic mobility and user comfort are reduced
Solution Approach 1:
The patent merges the resilient cushioning elements with the structural connection components into a single integrated assembly. This allows the resilient features necessary for dorsokinetic mobility to be incorporated without requiring separate manufacturing steps or additional assembly, thereby maintaining manufacturing simplicity while enhancing user comfort and mobility.
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
This solution provides enhanced ergonomic mobility, specifically dorsokinetic mobility, by allowing natural freedom of movement while reducing the number of parts and complexity in manufacturing, resulting in a more robust and cost-effective connection assembly.
Implementation Method 1
a connection portion (5) connecting the transverse support element (3) to the backrest structural element (4) and being formed so that the backrest structural element (4) is resiliently movable relative to the transverse support element (3)
Implementation Method 2
a transverse bearing (6) by means of which the backrest structural element (4) is rotatably coupled to the transverse support element (3)
Data Source
AI summary
A connection assembly for a backrest, of an office or conference chair, includes a backrest structural element, a transverse support element, a transverse bearing by means of which the backrest structural element is rotatably coupled to the transverse support element in a direction perpendicular to a transverse direction, and a connection portion connecting the transverse support element to the backrest structural element, arranged and formed so that the backrest structural element is resiliently movable relative to the transverse support element.