Universal Tie-Down Cord Assembly for Adjustable Seat Frame Attachment
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Solution Overview
Problem
The existing methods for attaching fabric to vehicle seat frames require pre-manufactured webbing of specific lengths, leading to increased inventory and storage costs due to multiple part numbers and sizes needed for different seat cover designs, resulting in space constraints and labor-intensive special end treatments.
Innovation Solution
A tie down cord assembly featuring a webbing with a tunnel portion and a cord comprising slot and flat sections, where the cord is woven in and out of the webbing at predetermined intervals, allowing for universal attachment to various seat frames without special end treatment, using different tensile properties of yarns to form loops for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If webbing is pre-manufactured with specific lengths for different seat frames, then the fabric can be securely attached to the seat frame, but inventory and storage costs increase due to multiple part numbers and sizes
Solution Approach 1:
The webbing is designed with a universal length and configuration that can be used with multiple different seat frame designs. The cord is woven through the webbing at predetermined intervals, allowing the same webbing piece to accommodate various seat frames by simply adjusting where the cord is attached, eliminating the need for multiple pre-manufactured webbing sizes
Solution Approach 2:
The cord is woven through the webbing in a dynamic configuration where it can be attached at different locations along the webbing length. This allows the attachment points to be adjusted based on the specific seat frame requirements, providing adaptability without requiring different webbing parts for each application
2Reliability
If webbing is pre-manufactured with specific lengths for different seat frames, then the fabric can be securely attached to the seat frame, but space constraints occur at the user's facility
Solution Approach 1:
A single universal webbing design replaces multiple size-specific webbing inventories, significantly reducing the storage space required at the user's facility. The webbing can be configured for different seat frames through adjustable cord attachment rather than requiring different physical webbing sizes
3Reliability
If special end treatment is applied to cord ends with attachment mechanisms, then the webbing can be fixedly positioned to the seat frame, but manufacturing complexity and labor increase
Solution Approach 1:
The attachment mechanisms are removed from the webbing ends and transferred to the cord itself. The cord is woven through the webbing body, and the attachment mechanisms are applied only to the cord ends, simplifying webbing manufacturing while maintaining secure attachment capability
Solution Approach 2:
The cord is woven through the webbing at predetermined intervals during webbing manufacturing, creating pre-positioned attachment points. This preliminary weaving action simplifies subsequent assembly operations, as the cord is already integrated into the webbing structure at the correct locations
Data Source
AI summary
Disclosed are tie down cord assemblies and methods of assembling same. According to some aspects, the tie down cord assembly includes a webbing having a tunnel portion and a flat portion, with the tunnel portion configured to receive a slotted cord and the flat portion configured to attach to fabric. The slotted cord weaves in and out of the tunnel portion and is configured to interact with a seat frame or other suitable structure to secure the fabric to a seat frame. The tie down cord assembly is configured to be universal so that it can be used with seat frames having different dimensions and/or configurations.