Two-Piece Stacking Chair Frame for Aesthetic Customization

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Solution Overview

Problem

Existing stacking and banquet chairs lack a unique visual appearance and flexibility in combining different aesthetic characteristics, limiting design options and customization.

Innovation Solution

A two-piece chair frame assembly comprising a back piece and a front piece with distinct surface characteristics, where the back piece includes a rear spar, attachment insert, and the front piece features a front spar, side spars, distal flange, and intermediate flange, allowing for different surface characteristics such as color, finish, and profile shape combinations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a traditional single-piece chair frame is used, then the manufacturing process is simple, but the visual appearance lacks uniqueness and customization options are limited

Engineering Contradiction:

Improveaesthetic customizationVSAvoidframe structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The chair frame is divided into two separate pieces: a back piece and a front piece. Each piece can be manufactured independently with different surface characteristics, allowing for aesthetic customization while simplifying the manufacturing process for each individual component.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the chair frame (front piece vs. back piece) are given different surface characteristics such as color, finish, or profile shape. This allows each segment to have optimized visual properties while maintaining structural integrity when assembled together.

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If multiple chair designs with different aesthetics are created, then visual variety is improved, but the number of parts to manufacture and assemble increases

Engineering Contradiction:

Improvedesign varietyVSAvoidproduction complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

By segmenting the frame into standardized back and front pieces, the system allows for modular assembly. Different combinations of pre-manufactured pieces can create various aesthetic designs without requiring completely new manufacturing processes for each variation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The back piece and front piece are designed as universal components that can be combined in different configurations. The same basic pieces can serve multiple design purposes through different surface treatments and combinations, reducing the total number of unique parts needed.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9986836B2Two-part stacking chair

Publication Date: 2018.06.05 MITY LITE INC

AI summary

A two-piece chair frame assembly comprises a back piece and a front piece joined together to form a chair frame. The back and front pieces are separate and discrete pieces until joined together. The back piece comprises a pair of rear legs, a backrest frame, and a back seat frame portion. The front piece comprises a pair of front legs and a front seat frame portion. The front and back seat frame portions join together to form a seat frame. The back and front pieces have different surface characteristics.