Sliding Window Motor Brake for External Force Locking
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Solution Overview
Problem
Existing sliding windows in residences and businesses are not designed for smart automation, requiring costly and skill-intensive frame replacements for motorized control, and there is a need for a retrofit mechanism that allows motorized control with minimal construction skill.
Innovation Solution
An automated window mechanism with an electric motor and a monitor that grounds the positive and negative leads to the same electric potential to act as an electric brake when external force is applied, preventing unwanted movement, and includes a monitor to detect and counteract external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a complete replacement of the existing window frame is performed to enable motorized control, then the window can be automated, but the cost increases and construction skill requirements increase
Solution Approach 1:
The system divides the automation function into separate components: a motor assembly and a control assembly that can be independently installed on the existing window frame without replacing the entire frame structure. This allows automation to be added as a modular retrofit rather than requiring complete frame replacement.
Solution Approach 2:
A motor assembly acts as an intermediary device between the existing manual window mechanism and the automated control system. The motor assembly includes a motor, gear assembly, and drive shaft that interface with the existing window sash and frame, enabling motorized operation without modifying the fundamental window structure.
2Reliability
If the electric motor is kept in locked state for security, then the window remains stationary, but external force can still potentially move the sliding panel
Solution Approach 1:
The monitor continuously detects external forces applied to the sliding panel in advance of potential unauthorized movement. When force is detected, the system preemptively activates the motor to generate counter force, preventing the window from moving rather than reacting after movement begins.
Solution Approach 2:
The monitor provides continuous feedback about external forces applied to the window. This feedback loop allows the control assembly to detect force attempts and automatically activate the motor to counteract the force, maintaining security through real-time monitoring and response.
3Reliability
If the motor acts as an electric brake by grounding leads, then unwanted movement is prevented, but the mechanism complexity increases
Solution Approach 1:
The motor assembly serves multiple functions: it provides motorized drive operation and also acts as an electric brake when needed. By grounding the motor leads to the same electric potential, the motor creates internal electromagnetic resistance that prevents unwanted movement, eliminating the need for a separate braking mechanism.
Solution Approach 2:
The motor assembly is designed to perform multiple functions: driving the window open and closed through normal operation, and acting as an electric brake to prevent unauthorized movement. This multi-functionality reduces the need for additional separate components while maintaining security features.
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 cost-effective, skill-free installation of motorized window control, preventing unwanted movement, and allowing for automated opening and closing while maintaining user control in emergencies.
Implementation Method 1
grounding the positive lead and the negative lead to a same electric potential thereby rendering the electric motor an electric brake impeding the external force from moving the sliding panel
Data Source
AI summary
An automated window mechanism has an electric motor attached to a sliding panel of a window configured to open and close the window by moving the sliding panel. The electric motor has a locked state in which the electric motor and sliding panel are stationary. The automated window mechanism also includes a monitor configured to detect an external force applied to the sliding panel while the electric motor is in the locked state. In response to the monitor detecting the external force while the electric motor is in the locked state, the positive lead and the negative lead are grounded, rendering the electric motor an electric brake, or the electric motor opposes the external force to prevent unwanted movement of the sliding panel. A method and system for preventing unwanted movement of an automated window are also disclosed.