Elevator Car Wall Seam Profile for Noise and Dust Sealing

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Solution Overview

Problem

Elevator car walls face challenges in noise reduction, dust prevention, fireproofing, and aesthetic appeal, with existing solutions often compromising on one or more of these aspects.

Innovation Solution

A novel elevator car wall design featuring a grid structure with vertical and horizontal support rods, panels attached via panel fastening elements, and a vertical seam profile that separates adjacent panels, providing a tight seal, fireproofing, easy installation, and a modern aesthetic.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If panels are attached directly to the grid structure without a seam profile, then the installation is simpler, but noise and dust can enter the car interior from the exterior

Engineering Contradiction:
Improvenoise and dust ingressVSAvoidseam profile structure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

A vertical seam profile acts as an intermediary element between adjacent panels, providing a sealing function that prevents noise and dust ingress while maintaining structural integrity. The seam profile includes a U-shaped bottom portion that receives panel fastening elements and an I-shaped middle portion that extends between panel edges to create a tight seal.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If panels are tightly bundled together with a seam profile, then fireproofing is improved, but the installation complexity increases

Engineering Contradiction:
ImprovefireproofingVSAvoidinstallation ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The wall construction is segmented into discrete panels separated by vertical seam profiles, allowing each panel to be independently installed while maintaining fireproofing through the metal seam profiles. The segmentation enables modular installation where panels can be attached separately to the grid structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The seam profile utilizes material property changes by employing metal construction that maintains structural integrity and fire resistance while allowing for precise geometric configurations (U-shaped bottom portion and I-shaped middle portion) that facilitate panel attachment and sealing.

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If a vertical seam profile with U-shaped bottom portion and I-shaped middle portion is used, then the seal tightness is improved, but the manufacturing complexity increases

Engineering Contradiction:
Improvepanel seam alignmentVSAvoidseam profile fabrication
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The U-shaped bottom portion and I-shaped middle portion are merged into a single integrated seam profile element, combining the sealing function and the alignment function in one component. This integration ensures precise panel seam alignment while simplifying manufacturing compared to using separate components.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS10981754B2Elevator car wall
Publication Date: 2021.04.20 KONE OYJ
  • US10981754B2 patent drawing
  • US10981754B2 patent drawing
  • US10981754B2 patent drawing

AI summary

An elevator car wall includes a support construction formed of a grid structure with vertical and horizontal support rods and a surface construction formed of panels attached with panel fastening elements to the grid structure. A vertical seam profile with a U-shaped bottom portion and an I-shaped middle portion is positioned between panel rows and attached with seam profile fastening elements to the grid structure. The middle portion extends between the vertical edges of the panel rows. A portion of the panel fastening element extends into contact with an inside surface of a respective branch of the U-shaped bottom portion in order to secure the vertical side edge of the panel against the middle portion.