Vehicle Headrest Core Recess Structure for Integrated Device Assembly
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Solution Overview
Problem
The manufacturing process for headrests with integrated devices is complicated and not easy due to the need for injecting a foaming material into a pouch-shaped skin material, making it difficult to assemble and maintain a smooth surface.
Innovation Solution
A headrest design featuring receiving recesses in the core for device placement, with a skin material covering the core and devices, allowing for simple assembly by inserting devices into recesses and covering with a skin material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a foaming material is injected into a pouch-shaped skin material to form a headrest with integrated devices, then the headrest achieves a unified structure with devices embedded therein, but the manufacturing process becomes complicated and difficult to execute
Solution Approach 1:
The headrest is divided into separate components: a core structure with receiving recesses, devices that can be inserted into these recesses, and a skin material that covers the assembly. This segmentation allows each component to be manufactured independently and assembled separately, avoiding the complexity of injecting foam into pouch-shaped skin with embedded devices.
Solution Approach 2:
The core structure is pre-formed with receiving recesses designed to accommodate specific devices. This preliminary preparation of the core structure allows devices to be easily inserted and positioned before the skin material is applied, simplifying the overall manufacturing process compared to trying to integrate devices during foam injection.
2Adaptability or versatility
If devices are embedded within foamed headrest structure, then device placement is achieved, but the surface smoothness and comfort are compromised
Solution Approach 1:
The skin material acts as a covering layer that replicates a smooth, uniform surface over the core structure and inserted devices. Instead of relying on the foamed structure to provide both device integration and surface smoothness, the skin material copies the desired smooth surface appearance while the core structure handles device accommodation.
3Ease of manufacture
If devices are inserted into receiving recesses and covered with skin material, then manufacturing is simplified, but device security and positioning must be ensured
Solution Approach 1:
The receiving recesses are designed with specific local features such as contours, dimensions, and possibly retaining structures that match the devices to be inserted. This local customization of the recess geometry ensures that devices are securely positioned and held in place, while the rest of the assembly process remains simple.
Data Source
AI summary
A headrest includes a box-shaped core having one or more receiving recesses that are recessed inward from an outer surface thereof and one or more devices configured to be received in the respective receiving recesses. The core is composed of a box-shaped core front portion and a box-shaped core rear portion positioned behind the core front portion, wherein the core front portion and the core rear portion are separate entities. Additionally, one of the core front portion and the core rear portion includes one or more bottom walls that define the respective receiving recesses, preventing movement of the respective devices toward the other of the core front portion and the core rear portion.