Seat Upholstery Hook Structure for Stable Tension Latching
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Solution Overview
Problem
Existing latch structures for vehicle seat upholstery materials using J-shaped hook members are prone to disengagement under passenger tension, leading to unstable latching.
Innovation Solution
A hook member with a pinching portion that secures the seat frame, a fixing portion to grasp the upholstery material, and an introduction portion with a curved shape to accommodate the material, ensuring stable latching by resisting tension and maintaining engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If two J-shaped hook members are used to latch the upholstery material, then the structure is simple and easy to manufacture, but the latching stability is insufficient under passenger tension
Solution Approach 1:
The hook member is divided into three functional segments: a pinching portion for securing the seat frame, a fixing portion for grasping the upholstery material, and an introduction portion for guiding the material. This segmentation allows each part to perform its specific function optimally, improving overall latching stability while maintaining manufacturing simplicity.
Solution Approach 2:
The introduction portion is designed with a curved shape that matches the contour of the seat frame plate body. This curvature allows the upholstery material to be smoothly guided and positioned into the fixing portion, ensuring proper alignment and enhancing latching reliability under tension.
2Ease of operation
If the hook members are engaged in an opposed manner at the back side of the seat, then the installation is simple, but the latching stability is insufficient under passenger tension
Solution Approach 1:
The pinching portion and fixing portion are combined into a single integrated hook member structure. The pinching portion secures the seat frame while the fixing portion simultaneously grasps the upholstery material, creating a unified latching system that maintains stability under tension while remaining easy to install.
Solution Approach 2:
The introduction portion acts as an intermediary element that guides the upholstery material from the exterior into the fixing portion. This curved transition piece ensures smooth material positioning and proper engagement, enhancing latching reliability without complicating the installation process.
3Device complexity
If the hook members are engaged oppositely, then the structure is symmetric and simple, but the resistance to tension force is insufficient
Solution Approach 1:
Different portions of the hook member are designed with locally optimized properties: the pinching portion has a geometry optimized for securing the frame, the fixing portion has features optimized for grasping the material, and the introduction portion has a curved shape optimized for guiding. This local quality differentiation enables the structure to resist tension forces effectively while maintaining overall simplicity.
Solution Approach 2:
The hook member utilizes three-dimensional spatial arrangement with the pinching portion, fixing portion, and introduction portion positioned at different orientations. This dimensional configuration allows the structure to resist tension forces from multiple directions while maintaining a simple overall design.
Data Source
AI summary
A hook member is provided and includes a pinching portion that pinches a plate body of a seat frame, a fixing portion that can fix an upholstery material, and an introduction portion defining an opening into the fixing portion, wherein the fixing portion faces an outer side of the plate body and is pinched by the pinching portion, and includes the introduction portion having a curved shape and defining an opening for the upholstery material to enter and be fixed therein.