Vehicle Seat Trim Attachment via Adhesive Layer
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Solution Overview
Problem
Vehicle seating systems face challenges in maintaining consistent contact between trim cover materials and base materials, particularly on complex geometries with concave and convex portions, where mechanical attachment devices like hog rings are ineffective.
Innovation Solution
An attachment arrangement is integrated into the vehicle seating system, comprising an adhesive layer between a non-adhesive layer and a cover layer, which is molded within a seat part to ensure the cover layer is accessible for trim material attachment, with magnetically-attractive elements securing the arrangement during molding to prevent base material flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If mechanical attachment devices such as hog rings are used to attach trim cover material to base material, then the attachment process is simplified, but the contact level between trim cover material and base material deteriorates in areas away from the attachment devices
Solution Approach 1:
The patent replaces mechanical attachment devices (hog rings) with a chemical bonding system using adhesive layers. The adhesive layer is applied to the base material before the trim cover is positioned, creating a chemical bond instead of mechanical fastening. This substitution allows for continuous contact across the entire attachment surface rather than discrete mechanical attachment points.
Solution Approach 2:
The patent introduces an adhesive layer as an intermediary substance between the base material and the trim cover material. This adhesive layer acts as a mediator that creates strong bonding between the two materials, ensuring consistent contact pressure and attachment across complex geometries including concave and convex portions.
2Ease of manufacture
If the adhesive layer is exposed during molding, then trim material attachment is facilitated, but the base material may flow and distort the attachment arrangement
Solution Approach 1:
The patent applies the adhesive layer to the base material before the molding process begins. This preliminary action ensures the adhesive is in place and ready for trim attachment, while the subsequent molding process forms the base material around the attachment arrangement, preventing distortion.
Solution Approach 2:
The attachment arrangement with the adhesive layer is nested within the base material during molding. The base material is formed around the attachment arrangement, with the adhesive layer positioned to face outward after molding, making it accessible for trim attachment while being protected during the molding process.
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 ensures strong and consistent attachment of the trim material to the base material over various contours, enhancing the aesthetic and functional integration of the seating system.
Implementation Method 1
an adhesive layer disposed between a non-adhesive layer and a cover layer
Implementation Method 2
The base material may be molded in the mold around at least a portion of the attachment arrangement
Data Source
AI summary
A vehicle seating system may include a seat part having a trim material positioned over a base material. A method for producing the seating system may include configuring an attachment arrangement to have an adhesive material and a non-adhesive material bonded to the adhesive material. The method may also include molding the base material onto the non-adhesive material such that a surface of the adhesive material faces outward away from the base material. The trim material may be disposed over the base material such that a back side of the trim material is adhered to the adhesive material.