Touchless Door System with Sensor-Controlled Motor and Locking Assembly

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Solution Overview

Problem

Existing door systems require manual operation, which can lead to contamination and hygiene issues, especially in confined spaces like toilets or clean rooms.

Innovation Solution

A touchless door system comprising a door motor assembly, a locking assembly, a control assembly, and a power source, utilizing touchless sensors for automatic opening and closing, and a signaling system for indicating door status.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If manual door operation is used, then device complexity is reduced, but hygiene and contamination control deteriorate

Engineering Contradiction:
Improvecontamination riskVSAvoidsystem complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical door operation with an automated motor-driven system. The door motor assembly (30) electronically actuates the door (26) to open and close automatically, eliminating the need for manual handling of door handles and locks, thereby reducing contamination risk while accepting increased system complexity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The door system operates autonomously using sensor-based detection and automated control. The control assembly (36) receives signals from sensors and automatically activates the motor to open/close the door without human intervention, allowing the system to serve itself and reducing contact points for contamination.

Inventive Principle:
Principle #25Self-service

2Object-affected harmful factors

If touchless sensors and automated control are added, then hygiene is improved, but device complexity increases

Engineering Contradiction:
Improvecontamination riskVSAvoidcontrol system complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent introduces touchless sensors as intermediary detection devices that sense user presence or gestures without physical contact. These sensors communicate with the control assembly, which mediates between detection and motor activation, enabling automated door operation while managing complexity through modular signal processing.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The control assembly (36) serves multiple functions: receiving sensor signals, determining door operation timing, activating the motor, and controlling the locking assembly. This multi-functionality consolidates control logic into a single unit, improving hygiene through touchless operation while managing overall system complexity through functional integration.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of operation

If automated door operation is implemented, then ease of operation is improved, but device complexity increases

Engineering Contradiction:
Improvedoor operation convenienceVSAvoidmotor assembly complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The system performs preliminary detection using sensors to identify when door operation is needed before actual movement occurs. The control assembly pre-processes sensor signals and prepares the motor assembly for actuation, enabling seamless automated operation that improves convenience while managing complexity through staged execution.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent extracts the manual operation component (door handles, manual locks) from the system and replaces it with an integrated motor-driven mechanism. The door motor assembly (30) incorporates both driving and locking functions in a single extracted unit, simplifying user interaction while consolidating mechanical complexity into one module.

Inventive Principle:
Principle #2Taking out (Extraction)

4Object-affected harmful factors

If door locking assembly is automated, then hygiene is improved, but device complexity increases

Engineering Contradiction:
Improvecontamination riskVSAvoidlocking mechanism complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges the locking function with the door motor assembly into a single integrated unit. The locking assembly (36) is electronically coupled to the motor, allowing simultaneous or coordinated actuation of door movement and locking without separate manual mechanisms. This consolidation eliminates multiple contact points, improving hygiene while managing complexity through functional integration.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12281514B2Door system and module therefore
Publication Date: 2025.04.22 Y STERN ENG 1989
  • US12281514B2 patent drawing
  • US12281514B2 patent drawing
  • US12281514B2 patent drawing

AI summary

A door module for use with a door system, and applications thereof, are disclosed. The door module comprises a door frame and a door articulated to the door frame, a touchless door module comprising a door motor assembly, a door locking assembly, a control assembly and a power source. The door motor assembly can be configured for displacing the door between an open position and a closed position, responsive to a door opening signal or a door closing signal, respectively, emitted from the control assembly. The locking assembly can be configured for displacing a locking bolt between a locked position at which it is engageable with a locking strike, responsive to a locking signal emitted from the control assembly, and an unlocked position, responsive to an unlocking signal emitted from the control assembly. The control assembly comprises in some embodiments at least one touchless inside sensor, wherein an entrance signal includes a signal received form the at least one inside touchless sensor, resulting in generating a door closing signal and an occupied signal, and an exit signal received by the at least one inside sensor resulting in generating a door opening signal. The control assembly may further comprise a signaling system configured for emitting noticeable door mode indicia responsive to door parameters.