Seat back
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Solution Overview
Problem
The existing seat back configurations require complex assembly processes due to separate components for the back frame, back pad, and back cover, complicating the assembly work.
Innovation Solution
A seat back design featuring a back frame with protruding support wires and an elastic mat with hooks that engage with the wires for secure attachment, allowing for simpler assembly while providing both comfort and support strength, and incorporating a backboard for a unified appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the back frame is covered with the back pad and the back cover separately, then the seat back provides good support strength and comfort, but the configuration becomes complicated and assembly work is complicated
Solution Approach 1:
The patent combines the back pad and back cover into a single integrated elastic mat component. The elastic mat is made of elastic material that provides both the cushioning function of a back pad and the covering function of a back cover, eliminating the need for separate components and simplifying the overall configuration while maintaining support strength and comfort.
Solution Approach 2:
The elastic mat serves multiple functions simultaneously: it acts as the back pad for comfort, the back cover for protection, and provides elastic support for the seated person's back. This multi-functional design reduces the number of components needed while maintaining all necessary seat back functions.
2Reliability
If the back pad and back cover are assembled separately, then each component can be optimized for its specific function, but the assembly work becomes complicated
Solution Approach 1:
The back pad and back cover are merged into a single elastic mat component that can be manufactured as one piece and installed in a single assembly operation. This eliminates the need for separate assembly steps while the elastic material properties ensure optimal cushioning and support functions are maintained.
3Ease of operation
If the elastic mat is made of polyester-based thermoplastic elastomer with a flexible structure, then good seating comfort and air permeability are provided, but the peripheral edge portion lacks rigidity
Solution Approach 1:
The elastic mat incorporates a rigid peripheral edge portion that extends around the circumference of the mat. This rigid edge provides structural support and maintains the mat's shape, while the central portion remains flexible and elastic to provide comfortable seating and allow air permeability. The local differentiation of material properties solves both requirements.
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
This design simplifies assembly, enhances seating comfort and support strength, and offers a lightweight, air-permeable structure with appropriate rigidity, while ensuring stable support and dispersion of body pressure through the use of a polyester-based thermoplastic elastomer elastic mat and a metal back frame.
Implementation Method 1
The elastic mat includes a plurality of hooks provided on a back surface of a main support portion configured to support the back of the seated person, the hooks being engaged with the support wire to fix the elastic mat to the support wire
Implementation Method 2
an elastic mat that is fitted to the back frame so as to cover the back frame from a front side, the elastic mat having a planar shape and being configured to elastically support the back of the seated person
Implementation Method 3
The back frame includes a frame body and a support wire that protrudes forward from the frame body
Data Source
AI summary
A seat back configured to support a back of a seated person includes a back frame that constitutes an internal framework; and an elastic mat that is fitted to the back frame so as to cover the back frame from a front side, the elastic mat having a planar shape and being configured to elastically support the back of the seated person. The back frame includes a frame body and a support wire that protrudes forward from the frame body. The elastic mat includes a plurality of hooks provided on a back surface of a main support portion configured to support the back of the seated person, the hooks being engaged with the support wire to fix the elastic mat to the support wire.