Door Stop Rod Assembly With Integrated Vibration Alert
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Solution Overview
Problem
Conventional door stop rods lack a mechanism to alert owners or neighbors when they are removed, leaving no way to deter unauthorized access or theft.
Innovation Solution
A door stop rod assembly equipped with a warning device that includes a circuit, power supply, buzzer, vibration detector, and switch, which activates the buzzer when vibration from an unauthorized attempt to open the door is detected, providing an alert mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional door stop rod is installed to prevent unauthorized access, then the door can be secured, but there is no way to alert occupants when the door stop rod is removed or tampered with
Solution Approach 1:
The patent combines the door stop rod structure with a warning device into a single integrated assembly. The warning device includes a vibration detector, buzzer, and power supply that are mounted on the door stop rod itself, so that when the door stop rod is removed or tampered with, the vibration detector senses the movement and triggers the buzzer to alert occupants. This merging eliminates the need for separate security systems while adding alert functionality.
Solution Approach 2:
The door stop rod assembly serves multiple functions: it physically blocks the door to prevent unauthorized access, and simultaneously acts as a security alarm system through the integrated warning device. The same structure that provides mechanical security also provides electronic alerting capability, making the system multi-functional and eliminating the need for additional separate devices.
2Object-generated harmful factors
If a door stop rod is used as a simple mechanical barrier, then the structure remains simple, but it cannot provide active warning or deterrence against theft
Solution Approach 1:
The warning device provides feedback when the door stop rod is tampered with or removed. The vibration detector continuously monitors the door stop rod for unusual movements or vibrations, and when detection occurs, it triggers the buzzer to emit audible alerts. This feedback mechanism allows occupants to immediately know when security is compromised, enabling them to take further action to deter thieves.
Solution Approach 2:
The integrated warning device creates a preliminary deterrent effect by alerting occupants before theft can complete. When the door stop rod is removed or tampered with, the immediate audible alarm warns occupants to take action, potentially causing thieves to abandon their attempt. This preliminary warning action prevents the harmful outcome of successful theft.
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
The solution effectively deters unauthorized access by alerting individuals inside the room, allowing them time to respond to potential threats, enhancing security without relying on the presence of the door stop rod.
Implementation Method 1
When the vibration detector detects vibration from the door knob that the yoke is engaged
Implementation Method 2
Each extension is connected to a torsion spring so that the two extensions normally pivot toward each other
Implementation Method 3
A biased pin is located in the inner tube and has an end piece protruding through the outer periphery of the inner tube
Data Source
AI summary
A door stop rod assembly includes a base having a room defined therein. A neck and a yoke are respectively connected to two opposite ends of the base. The collapsible part is connected to the neck. The yoke includes a notch against which the door knob contacts. A warning device is located in the room of the base and includes a circuit, a power supply, a buzzer, a vibration detector, a static electricity sensor and a switch. When the vibration detector detects vibration from the door knob due to exterior touch of the door knob, the circuit activates the buzzer to warn the persons inside the house.