Chair Assembly Using Magnetically Activated Adhesive Bonding
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Solution Overview
Problem
Existing methods for fastening chair components often require costly manufacturing processes, specific tools, and extra parts, which increase production costs and complicate assembly, while also detracting from the aesthetic design of the chair.
Innovation Solution
A method using an adhesive composed of a polymeric material and magnetic susceptors that is activated by a magnetic field or electromagnetic waves to bond chair components without the need for traditional fasteners or frame members, employing hysteresis and eddy current heating to create a strong weld.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional fasteners such as bolts or screws are used to connect chair components, then the connection strength is improved, but the manufacturing cost increases and the assembly speed decreases
Solution Approach 1:
The patent replaces mechanical fastening systems (bolts, screws, clips) with a magnetic field-based activation system. Electromagnetic waves or magnetic fields are used to activate the adhesive, eliminating the need for mechanical fasteners and their associated assembly steps, thereby increasing assembly speed while maintaining connection strength
Solution Approach 2:
The adhesive's properties are changed through parameter modification - it remains inactive during assembly and is only activated when exposed to electromagnetic waves or magnetic fields. This allows the adhesive to function as both a bonding agent and a fastener replacement, achieving strong connections without mechanical fasteners while enabling rapid assembly
2Productivity
If welding is used to attach chair components, then the assembly speed is improved, but the risk of component damage increases and direct access is required
Solution Approach 1:
The patent replaces thermal welding processes with electromagnetic field activation of adhesive. This substitution eliminates the high temperatures and direct contact associated with welding that can damage components, while still achieving rapid assembly through non-contact field activation
Solution Approach 2:
The adhesive acts as an intermediary substance that is activated by electromagnetic fields or magnetic fields. This intermediary approach allows energy transfer without direct contact between the activation source and the components being joined, preventing thermal damage while maintaining assembly speed
3Stability of the object's composition
If frame members or carrier members are inserted into grooves for fastening, then the structural stability is improved, but the device complexity increases and manufacturing cost increases
Solution Approach 1:
The patent extracts and eliminates the need for separate frame members, carrier members, and groove structures by using adhesive directly applied to the chair components. The adhesive itself provides the structural stability previously requiring complex mechanical interlocking systems, thereby reducing device complexity
Solution Approach 2:
The patent merges the functions of structural support and fastening into a single adhesive material. The adhesive simultaneously provides structural stability and acts as the fastening mechanism when activated by electromagnetic fields or magnetic fields, eliminating the need for separate structural and fastening components
4Strength
If visible fasteners are used to attach chair components, then the connection strength is improved, but the aesthetic appearance deteriorates
Solution Approach 1:
The patent replaces visible mechanical fasteners with an invisible adhesive system activated by electromagnetic fields or magnetic fields. The adhesive creates strong bonds without requiring visible bolts, screws, or clips, thereby maintaining connection strength while preserving the aesthetic appearance of the chair
Solution Approach 2:
The adhesive serves as an invisible intermediary that provides strong bonding without visible hardware. When activated by electromagnetic fields or magnetic fields, the adhesive creates strong connections that are not visible on the finished product, maintaining both strength and aesthetic appearance
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 approach allows for efficient and cost-effective assembly of chair components with enhanced strength and aesthetic preservation, as it eliminates the need for bolts, screws, or frame members, while providing a robust and durable bond.
Implementation Method 1
The one or more magnetic susceptors are preferably configured to provide hysteresis heating and/or eddy current heating after being activated by electromagnetic waves or exposure to an electromagnetic field or a magnetic field
Implementation Method 2
The one or more magnetic susceptors are preferably configured to provide hysteresis heating and/or eddy current heating after being activated by electromagnetic waves or exposure to an electromagnetic field or a magnetic field
Implementation Method 3
An adhesive is positioned on or in the first chair component. The adhesive is composed of a third polymeric material and at least one magnetic susceptor
Data Source
AI summary
A method of assembling a chair includes providing a first chair component composed of a first polymeric material and a second chair component composed of a second polymeric material. An adhesive is positioned on or in the first chair component. The adhesive is composed of a third polymeric material and at least one ferromagnetic susceptor. The second chair component is positioned in engagement with the adhesive and adjacent to the first chair component. A magnetic field or electromagnetic waves are applied to the adhesive to activate the adhesive. A force is also applied to at least one of the first chair component and the second chair component to press the first chair component and the second chair component. A chair is also provided that includes the first and second chair components and the adhesive.