Headrest Cover Closure for Flexible Foam Filling and Sealing
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Solution Overview
Problem
Existing headrest manufacturing methods require restrictive configuration and opening arrangements due to the need for openings to introduce structural elements before foamed material, limiting design freedom and aesthetic appeal.
Innovation Solution
A headrest with a cover that uses a zip fastener as a closure element to allow for partially liquid foamed material introduction, providing greater design freedom and effective sealing without compromising aesthetics, with additional features like a covering element to enhance sealing and conceal the closure element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If an opening is made in the cover to introduce structural elements before foamed material, then structural elements can be introduced, but the opening arrangement becomes restricted and aesthetic appeal deteriorates
Solution Approach 1:
The cover is divided into multiple parts with a separable closure element (zip fastener) that allows the opening to be positioned flexibly. The closure element divides the cover into first and second parts that can be joined at different locations, enabling design freedom while maintaining the ability to introduce structural elements.
Solution Approach 2:
The closure element acts as an intermediary mechanism that bridges the need for an opening (for introducing structural elements) and the desire for aesthetic appearance. It provides a controllable opening/closing function that allows manufacturing access while preserving the final aesthetic appearance when closed.
2Adaptability or versatility
If a closure element is added to close the opening, then design freedom improves, but device complexity increases
Solution Approach 1:
The closure element utilizes flexible sealing lips and film-like sealing structures that can conform to the cover geometry. These flexible elements provide effective sealing without requiring complex rigid mechanisms, thus increasing adaptability while minimizing added complexity.
Solution Approach 2:
Instead of making the opening a permanent feature and accepting aesthetic compromise, the invention inverts the approach by making the opening temporary and controllable through the closure element. The default state is closed (aesthetic), and the opening is activated only when needed for manufacturing or access.
3Reliability
If the closure element is made visible on the outer side, then sealing effectiveness improves, but aesthetic appeal deteriorates
Solution Approach 1:
The sealing function is localized to the inner non-visible side of the cover, where the closure element and sealing structures are positioned. The outer visible side maintains its aesthetic quality without visible closure elements, as the sealing action occurs locally at the zip fastener location which is concealed from external view.
Data Source
AI summary
A headrest and a method for manufacturing a headrest are proposed, wherein the headrest is provided, in particular, as a motor vehicle headrest, wherein the headrest has a cover and a foamed material, wherein the foamed material fills the cover at least in certain areas, wherein the headrest is manufactured in such a way that the foamed material is at least partially liquid at the time when the foamed material is introduced into the cover, wherein the cover has at least one closure element, wherein an opening in the cover which is present before the foamed material is introduced can be closed off by means of the closure element.