Universal Endlock with Intersecting Holes for Roll-up Doors

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Solution Overview

Problem

Existing roll-up door endlocks are designed for specific sides and spacings, leading to increased costs, inventory, and damage to slats due to protruding profiles that create bending moments when coiled, resulting in premature wear and tear.

Innovation Solution

A universal endlock designed to work on either side of the slats with intersecting hole patterns, allowing compatibility with different spacings and a lower profile that prevents bending moments, reducing costs and extending slat lifespan.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If traditional endlocks with protruding profiles are used to connect slats, then the slats can be securely connected, but the protruding endlocks create bending moments when the door is coiled, causing slat damage and premature wear

Engineering Contradiction:

Improveslat connection strengthVSAvoidslat damage from bending moments

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The endlock profile height is changed from protruding to lower than the slat thickness, fundamentally altering the geometric parameter to eliminate the bending moment problem while maintaining connection functionality

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The endlock design proactively prevents slat damage by adopting a lower profile that avoids creating bending moments during coiling, addressing the harmful effect before it can occur

Inventive Principle:

Principle #9Preliminary anti-action

2Adaptability or versatility

If different endlocks are used for different slat spacings and sides, then compatibility with various slat configurations is achieved, but inventory complexity and manufacturing costs increase

Engineering Contradiction:

Improvecompatibility with different slat spacingsVSAvoidinventory variety of endlocks

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

A single endlock design is created that can be used on both left and right sides of slats and accommodates different slat spacings through adjustable mounting holes, eliminating the need for multiple specialized endlock variants

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The endlock incorporates adjustable mounting hole positions that allow it to adapt dynamically to different slat spacing configurations, providing versatility without requiring multiple fixed designs

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11851947B2Universal endlock

Publication Date: 2023.12.26 CORNELLCOOKSON LLC

AI summary

In example implementations, a universal endlock is provided. The universal endlock includes a body, a first side along a first edge of the body, a second side along a second edge of the body opposite the first edge, a first lip on a first end of the first side, and a second lip on a first end of the second side. The body includes an intersecting hole pattern on a center portion of the body. The first side and the second side are each bent towards a back side of the body. The first lip is bent away from a first edge of the body and the second lip is bent away from the second edge of the body.