Vehicle Seat Surface Skin Fastening With Slit-Interlock Structure
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Solution Overview
Problem
Conventional surface skin-fastening structures for vehicle seats are complex, costly, and require large installation spaces, with issues of surface skin displacement until additional components like cup holders or pull-handles are added, and complex shapes and high costs in fastening devices.
Innovation Solution
A surface skin-fastening structure using a base member with integral slits and a surface skin-pressing member, where an interlocking member is inserted into the slits and the surface skin is pressed against the base member, facilitating secure fastening with reduced complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional pressing components (cup holder, pull-handle) are used to fasten the surface skin, then the surface skin can be secured to the framework, but the device complexity and cost increase, and the surface skin readily displaces until these additional components are added
Solution Approach 1:
The pressing component and the fastening structure are merged into a single integrated base member. The base member incorporates both the pressing function (through its contact surface with the surface skin) and the fastening function (through the interlocking member that engages with the frame), eliminating the need for separate cup holders or pull-handles.
Solution Approach 2:
The base member serves multiple functions simultaneously: it provides structural support, acts as the pressing component that secures the surface skin, and incorporates the interlocking mechanism for fastening to the frame. This multi-functionality reduces the number of separate components needed.
2Reliability
If conventional fastening structures with multiple components are used, then the surface skin can be fastened, but the manufacturing cost and installation space requirements increase
Solution Approach 1:
Multiple functional components (base member, pressing surface, and interlocking mechanism) are combined into a single integrated part. This reduces the number of manufacturing steps, assembly operations, and inventory requirements, thereby lowering manufacturing costs.
Solution Approach 2:
The base member is designed to perform multiple functions (structural support, surface skin pressing, and interlocking fastening) in a single component, reducing the total material cost and simplifying the manufacturing process compared to producing multiple separate parts.
3Reliability
If conventional fastening structures are used, then the surface skin can be secured, but the installation space and structural complexity increase
Solution Approach 1:
The interlocking member is integrated directly into the base member, eliminating the need for separate fastening components that would require additional installation space. The combined structure occupies less volume while maintaining fastening stability.
4Reliability
If complex fastening devices with multiple components are used, then the surface skin can be fastened securely, but the device complexity and cost increase significantly
Solution Approach 1:
The pressing component and interlocking mechanism are merged into a single base member, dramatically reducing the number of parts from multiple separate components to one integrated unit. This simplifies the fastening device while maintaining secure surface skin attachment.
Solution Approach 2:
The base member is designed as a multi-functional component that simultaneously provides structural support, surface skin pressing, and interlocking fastening capabilities, eliminating the need for complex multi-component assemblies.
Data Source
AI summary
A surface skin-fastening structure for a vehicle seat for fastening a surface skin to a framework of a vehicle seat, includes a base member which is integral with the framework, a surface skin-pressing member fitted into the base member, an interlocking member provided to an end of the surface skin, and slits provided to the base member. The base member has an extension section, which is an end edge that makes contact with a reverse surface of the surface skin. The slits extend in linear fashion along the end edge of the base member. With the surface skin covering the end edge of the base member, the interlocking member and the end of the surface skin are inserted into one opening of the slits and pass through the slits to appear from the other opening, and are stopped in a state of surface contact at the base member.