Seating device and manufacturing method thereof

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Solution Overview

Problem

Conventional seat cushions fail to provide adequate support to the outer sides of the buttocks, leading to unbalanced sitting postures and discomfort, particularly during movements, which results in pain in the legs, butt, and tailbone.

Innovation Solution

A seating device with two wing supports extended sidewardly and upwardly from the seat body, forming a basin-shaped surface to provide full contact support, integrated with a manufacturing method that includes a core member wrapped in an outer skin for reinforcement and ventilation, allowing for adjustable width to accommodate different hip sizes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If conventional seat cushions are used, then the seating surface is simple and easy to manufacture, but the outer sides of the buttocks are unsupported leading to unbalanced sitting posture

Engineering Contradiction:
Improvesitting balanceVSAvoidseat structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The seat cushion is divided into multiple functional zones: a central seating area and two lateral wing supports that extend downward. This segmentation allows each zone to perform its specific function - the central area provides main seating support while the wing supports specifically address the outer buttock regions, thereby improving sitting balance without requiring a completely new seat design

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The wing supports extend in a lateral dimension from the central seat cushion, creating a three-dimensional supportive structure. This dimensional extension provides lateral support for the outer buttocks while maintaining compatibility with existing seat frames, resolving the contradiction between improved support and structural complexity

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Ease of operation

If bicycle saddle with long narrow shape is used, then the device is simple, but the two outer sides of buttocks are totally unsupported causing pain during pedaling

Engineering Contradiction:
Improvecomfort during pedalingVSAvoidsaddle structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The seat cushion incorporates localized wing supports at the lateral regions where buttock contact occurs during pedaling. This local quality enhancement provides targeted support exactly where needed during the pedaling motion, improving comfort without requiring a complete redesign of the entire saddle structure

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS11583090B2Seating device and manufacturing method thereof
Publication Date: 2023.02.21 LIU CHUANQI
  • US11583090B2 patent drawing
  • US11583090B2 patent drawing
  • US11583090B2 patent drawing

AI summary

A manufacturing method of a seating device includes manufacturing an outer skin; manufacturing a core member via a foaming process; wrapping the core member in the outer skin, coupling a mounting plate at a bottom surface of the core member; and selectively coupling a mounting structure to the mounting plate to form the seating device. The outer skin is constructed to have a top skin layer adhered on a top surface of the core member, a side skin layer adhered on a side surface of the core member, and a bottom skin layer adhered on a bottom surface of the core member. Particularly, the top skin layer of the outer skin is adhered on the top surface of the core member edge-to-edge to initially align and retain the outer skin on the core member.