Seat Back Connection Member With Convex-Guided Bending
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Solution Overview
Problem
Conventional bridging carpets require complex production steps and a large amount of material, leading to increased costs, and when made of plastic resin, stitching to maintain a bended state can deteriorate and affect appearance and design, with uncertainty about the direction of bending if no crease is present.
Innovation Solution
A connection member with a thin plate or sheet main body and long convex portions, integrally molded using flexible synthetic resin, allowing for bending without protrusion between attachment receiving portions, with convex portions arranged to limit bending direction and prevent upward protrusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If stitching is performed to maintain a bended state of a bridging carpet, then the bended state can be maintained, but the stitched part deteriorates with time and affects appearance and design property
Solution Approach 1:
The invention extracts the stitching process from the plastic resin bridging member by pre-forming creases during molding. The creases are created as integral parts of the molded structure, eliminating the need for subsequent stitching operations that would compromise appearance and durability.
Solution Approach 2:
The creases are formed in advance during the molding process itself, before the product is assembled or installed. This preliminary formation of bends ensures the plastic resin member maintains its intended shape without requiring deteriorating stitching, while the creases are already positioned to guide proper bending direction.
2Stability of the object's composition
If a bridging carpet is made of carpet material, then it can be stitched to maintain bended state, but production steps increase and production cost rises
Solution Approach 1:
The invention merges the crease formation step into the molding process itself. The creases are created as an integrated part of the molding operation, combining what would otherwise be separate steps (molding + creasing + stitching) into a single manufacturing process, thereby reducing production complexity and cost.
Solution Approach 2:
The invention replaces the mechanical stitching system with a molded crease system. Instead of using needles and thread to maintain bends, the plastic resin is molded with pre-formed creases that inherently maintain the bended state, substituting a complex mechanical fastening system with a simpler molded structural feature.
3Ease of manufacture
If no crease is made on a plastic resin bridging member, then production is simpler, but it cannot be determined whether the member will bend convex upward or downward
Solution Approach 1:
The invention applies local quality by creating creases only in specific regions where bending is required, while leaving other areas of the plastic resin member smooth and uniform. This localized crease formation provides directional control exactly where needed without complicating the overall manufacturing process or affecting other functional areas.
4Adaptability or versatility
If the connection member is bended without convex portions, then it can stretch and contract, but it may protrude upward from the gap between attachment receiving portions
Solution Approach 1:
The invention uses asymmetry in the cross-sectional shape of the convex portions. The convex portions have a specific asymmetric geometry where one side is more prominent than the other, which guides the bending direction and ensures the member bends in the intended direction rather than protruding upward. This asymmetric feature works together with the flexibility of the plastic resin to maintain both adaptability and shape control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The connection member can be easily bended and contracted without protruding upward, reducing production complexity and costs, maintaining appearance and design integrity, and ensuring consistent bending direction without material deterioration.
Implementation Method 1
a main body portion (7) formed into a shape of a thin plate or a sheet... capable of stretching and contracting as at least one of a first attachment receiving portion (6) and a second attachment receiving portion (5) moves
Implementation Method 2
a plurality of long convex portions (10, 12)... extendedly provided in a direction orthogonal to a stretching and contracting direction... the bending portion is to be bended in a manner such that the plurality of the long convex portions are to be positioned inward
Data Source
AI summary
Provided is a connection member that is to be bridged between a seat back and a luggage room floor, and stretches and contracts as at least one of the seat back and the luggage room floor moves. The connection member has a main body portion formed into the shape of a thin plate or a sheet; and a plurality of long convex portions provided on the main body portion in a parallel manner. The long convex portions are extendedly provided in a direction orthogonal to a direction along which the connection member stretches and contracts. As the seat back and the luggage room floor approach each other, a first bending portion and second bending portion having the plurality of the long convex portions will be bended in a manner such that the plurality of the long convex portions will be positioned inward.