Garage Door Track Inward Hemming and Stiffening Ribs

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Solution Overview

Problem

Conventional garage door tracks have sharp edges that pose a risk of injury during installation and use, lack stiffening ribs for support, and suffer from roller drag and track bowing issues, leading to potential failure and increased manufacturing costs.

Innovation Solution

The garage door track features inwardly hemmed edges for increased strength and safety, along with four stiffening ribs and a radius-cut reinforcing angle to prevent sharp edges, reducing the need for multiple steel gauges and enhancing roller movement, thus improving strength, safety, and manufacturing efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the track edges are hemmed outwardly to reduce sharp edges, then safety is improved, but the track strength is reduced

Engineering Contradiction:

Improvesharp edges causing injury riskVSAvoidtrack strength

Core Design Contradiction:

Object-affected harmful factorsVSStrength

Solution Approach 1:

Instead of hemming the track edges outwardly as in prior art, this patent hems the edges inwardly. The hemmed edge is bent inwardly at an angle between 30-60 degrees relative to the outer surface, creating a smooth rounded edge that eliminates sharp edges while maintaining track strength through the inward bending configuration.

Inventive Principle:

Principle #13The other way round (Inversion)

2Ease of manufacture

If the track material is made thinner to achieve interior roll formed beads, then manufacturing is easier, but the track strength is reduced and roller wheels bind

Engineering Contradiction:

Improveinterior roll formed beadsVSAvoidtrack strength and roller wheel movement

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

Instead of forming interior roll formed beads as in prior art, this patent forms exterior hemmed edges by bending the track edge inwardly. This inversion of the edge treatment approach allows use of standard thickness materials while maintaining strength and preventing roller wheel binding.

Inventive Principle:

Principle #13The other way round (Inversion)

3Ease of manufacture

If conventional tracks are used without stiffening ribs, then manufacturing is simpler, but the track experiences bowing and roller drag

Engineering Contradiction:

Improvetrack manufacturing simplicityVSAvoidroller movement smoothness

Core Design Contradiction:

Ease of manufactureVSEase of operation

Solution Approach 1:

This patent incorporates stiffening ribs at specific locations within the track structure. The stiffening ribs are positioned to provide localized reinforcement that prevents track bowing and reduces roller drag, while maintaining relative manufacturing simplicity through targeted rather than universal reinforcement.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS9249622B1Garage door track with inwardly hemmed sidewall, and reinforcing ribs to reduce the incidence of rollout

Publication Date: 2016.02.02 PREMIUM GARAGE DOOR HARDWARE

AI summary

An improvement in garage door tracks which includes placing an inwardly pressed hem on the distal ends of the sections of track which surround the gap by which wheels from a garage door are placed into a track chamber. The hems on the distal end provide increased strength and a safer smoother edge. The inward hemming also does not interfere with the roller wheels of the garage door. This further solves the problem of track failure and bulge or crimping and causes less stress on the garage door track. A further innovation is to have strengthening ribs at different locations on the garage door track to provide further strength to the garage door track. A further innovation is to provide strengthening ribs at different locations on the garage door track to provide further strength to the garage door track.