Automotive Interior Pressure Bonding with Fluid Chamber
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Solution Overview
Problem
The challenge lies in effectively press-bonding a bilaminate covering with complex geometries onto an automotive instrument panel without distorting the visual appeal or functionality, as existing methods like vibration welding limit the attachment options for inflatable restraint chutes.
Innovation Solution
An apparatus comprising press components with a pressure chamber and fluid supply system is used to apply fluid pressure to the substrate and covering, allowing for precise bonding even with complex geometries, enabling the covering to be installed after the chute is attached, and ensuring uniform pressure across the substrate and covering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If vibration welding is used to attach the PSIR chute to the instrument panel, then the attachment strength is improved, but the choice of attachment options is limited and complex geometries cannot be accommodated
Solution Approach 1:
The patent replaces vibration welding (mechanical/thermal process) with a vacuum bonding system that uses vacuum pressure to attach the covering to the instrument panel. This substitution allows for attachment of complex geometries that cannot be accommodated by traditional vibration welding methods.
Solution Approach 2:
The patent employs vacuum pressure (pneumatic principle) to bond the covering to the instrument panel. The vacuum system creates uniform pressure distribution across the bonding surface, enabling attachment of components with complex three-dimensional geometries including recesses and protrusions.
2Adaptability or versatility
If the bilaminate covering is bonded to the instrument panel first, then the attachment sequence flexibility is improved, but visual distortion occurs due to complex PSIR chute geometries
Solution Approach 1:
The patent applies local quality by creating a vacuum environment specifically within the bonding area between the covering and instrument panel. This localized vacuum application allows the covering to conform to complex PSIR chute geometries without causing visual distortion, while maintaining attachment sequence flexibility.
Solution Approach 2:
The vacuum bonding system creates equipotential pressure distribution across the entire bonding surface. This uniform vacuum pressure allows the covering to evenly conform to complex geometries, preventing visual distortion while enabling flexible attachment sequences.
3Device complexity
If conventional pressing methods are used on complex geometries, then the process simplicity is maintained, but uniform pressure cannot be achieved leading to bonding defects
Solution Approach 1:
The patent replaces conventional mechanical pressing methods with a vacuum bonding system. This substitution eliminates the need for complex press tooling while achieving uniform pressure distribution across complex geometries, thereby maintaining process simplicity while improving bonding precision.
Solution Approach 2:
The vacuum system provides uniform pressure distribution across the bonding surface without requiring complex mechanical press mechanisms. This pneumatic approach simplifies the overall process while achieving the pressure uniformity necessary for defect-free bonding of complex geometries.
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 method allows for precise and uniform press bonding of materials with complex geometries, preventing damage and ensuring reliable attachment of the inflatable restraint chute, while maintaining the aesthetic appeal of the automotive interior component.
Implementation Method 1
introducing a first fluid into the pressure chamber of the first press component such that the fluid applies a fluid pressure to the second surface of the first layer
Data Source
Figure 1
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Figure 3A~3D
AI summary
An apparatus for manufacturing an automotive interior component and a method for manufacture thereof are provided. The method includes providing a first and second layer (14,18) of the automotive interior component. The method includes providing an apparatus (10) comprising a first press component (32) and a second press component (34), the first press component including a pressure chamber configured to receive a protrusion (16) of the first layer (14). The method includes inserting the first layer (14) into the first press component, such that the protrusion is received by the pressure chamber of the first press component (32). The method includes coupling the first layer (14) and the second layer (18), wherein coupling comprises moving at least one of the first press component (32) and second press component (34) toward the other and introducing a first fluid into the pressure chamber (36) of the first press component such that the fluid applies a fluid pressure to the first layer (14).