Keyless Door Entry Device With Motorized Key Dispensing
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Solution Overview
Problem
Existing real-estate lock boxes require manual keys, security codes, or swipe cards for access, which can be inconvenient and lack keyless entry solutions for secure and easy property access management.
Innovation Solution
A door entry device that provides keyless access using a keypad and a clutch motor mechanism, allowing secure installation over a door-locking device, with adjustable components to accommodate different door-locking heights and a periodically changing security code for enhanced security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual key, security code, or swipe card is used for lock box access, then security is maintained through physical access control, but user convenience and ease of operation deteriorate due to the need for physical keys or memorized codes
Solution Approach 1:
The patent replaces the mechanical key-lock system with an electronic keypad and motor-driven key dispensing system. Users enter a code on the keypad, and an electric motor automatically retrieves and presents the key, eliminating the need for manual key manipulation or memorization of security codes while maintaining security through coded access control.
Solution Approach 2:
The system enables self-service by automatically retrieving and presenting the key through a motorized mechanism after code entry. The key is mechanically extracted from the lock box and delivered to the user without requiring manual intervention to open the box or retrieve the key, thereby improving ease of operation.
2Ease of operation
If a fixed security code is used for keyless entry, then ease of operation improves by eliminating physical keys, but security deteriorates due to static access codes that can be compromised
Solution Approach 1:
The patent implements dynamic security codes that change periodically or for different users, replacing static codes with time-varying or user-specific access credentials. This dynamic approach maintains ease of keyless operation while significantly improving security reliability by preventing code compromise through regular code rotation and user-specific code assignment.
3Ease of operation
If a lock box system is used to store property keys, then security is maintained through centralized key control, but ease of operation deteriorates due to the need to manually access the lock box and return keys
Solution Approach 1:
The patent replaces manual key retrieval and return processes with an automated motorized system. After code entry on the keypad, an electric motor automatically retrieves the key from the lock box, presents it to the user, and can subsequently return it to the box. This eliminates the time-consuming manual operations of opening the box, retrieving the key, and returning it, thereby reducing time loss while maintaining centralized key control security.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables convenient, secure, and keyless entry into properties, with adjustable installation and dynamic security code management, enhancing user accessibility and security without the need for physical keys.
Implementation Method 1
a clutch motor mechanism
Data Source
AI summary
A door entry device comprising includes a case, a key holder and a key pad. The case covers a door-locking device on a door. The key holder has a slot into which a key end fits. The knob is mounted on the case. A currently active security code can be entered into the keypad. When the currently active security code has been entered into the keypad, turning the knob results in turning the key holder to unlock the door-locking device.