Hollow Blocking Element with Cavity Filling for Access Control

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Solution Overview

Problem

Existing passage devices for access control and isolation, such as turnstiles and revolving doors, face challenges in being both lightweight and robust against sabotage while being easy to manufacture and assemble.

Innovation Solution

A passage device with a blocking element featuring a base body with a cavity filled with a solid material, such as metal, plastic, or a concrete mix, which provides increased flexural rigidity and resistance to mechanical influences, allowing for easy assembly and movement with minimal force, and is designed to be lightweight and robust against sabotage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If the blocking element is made hollow and filled with air, then the weight is reduced, but the flexural rigidity and resistance to mechanical influences are insufficient

Engineering Contradiction:

Improveweight of blocking elementVSAvoidflexural rigidity and resistance to mechanical influences

Core Design Contradiction:

Weight of moving objectVSStrength

Solution Approach 1:

The blocking element combines a hollow base body structure with a filling material to create a composite construction. The base body provides the overall shape and containment, while the filling material (such as foam, sand, or other substances) provides the necessary rigidity and resistance to mechanical influences. This composite approach allows the blocking element to achieve both lightweight properties and structural strength simultaneously.

Inventive Principle:

Principle #40Composite materials

2Strength

If the blocking element is made solid and heavy, then the strength and resistance to sabotage are improved, but the ease of assembly and movement is reduced

Engineering Contradiction:

Improverobustness against sabotageVSAvoidease of assembly and movement

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The hollow base body structure acts as a counterweight solution by replacing dense solid material with a lighter hollow structure filled with appropriate materials. This reduces the overall weight of the blocking element while maintaining the necessary strength and resistance to sabotage through the strategic use of filling materials and the structural design of the base body.

Inventive Principle:

Principle #8Anti-weight (Counterweight)

3Reliability

If the blocking element is made robust against mechanical influences, then the reliability is improved, but the manufacturing complexity increases

Engineering Contradiction:

Improverobustness against mechanical influencesVSAvoidease of manufacture

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The blocking element is segmented into two distinct components: the base body and the filling material. This segmentation allows for simplified manufacturing of each component separately - the base body can be produced using standard hollow structure fabrication methods, and the filling material can be independently selected and inserted. This modular approach reduces overall manufacturing complexity while achieving the desired robustness.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP4194660A1Access device for access control and / or separation

Publication Date: 2023.06.14 DORMAKABA DEUT GMBH

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AI summary

The invention relates to a passage device (1) for access control and/or singulation, comprising at least one locking element (2, 3) which projects into a passage of the passage device (1) and blocks the passage, wherein the locking element (2, 3) has a base body (20) with at least one cavity, wherein the cavity is at least partially filled with a filling (21).