Modular Surface-Mounted Electric Strike for Adjustable Latch Alignment
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Solution Overview
Problem
Existing door locking devices, particularly overhead mounted strikes, face installation challenges due to the need for extensive modifications of the door frame, which can weaken the structure and increase installation time and cost, especially when used with double doors or frameless glass doors.
Innovation Solution
A modular and adjustably positionable surface mounted electric strike system that includes a universal base plate and interchangeable electric strike modules, allowing for secure mounting without significant cuts to the door frame, and accommodating various door latch spacings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard overhead surface mounted strike is used, then the door can be secured in a closed position, but extensive modifications to the door frame are required for installation
Solution Approach 1:
The electric strike is divided into separate modular components: a strike body, a keeper assembly, and an actuator assembly. This segmentation allows each component to be manufactured independently and assembled during installation, reducing the need for extensive frame modifications while maintaining the door securing function.
Solution Approach 2:
The electric strike is designed with a universal mounting plate that can be installed on various door frame types without extensive modifications. The device serves multiple functions: mechanical locking, electrical actuation, and adjustable positioning, making it adaptable to different installation scenarios.
2Ease of operation
If a prior art electric strike with rotating keepers is used, then the latch can be released electrically, but significant cuts must be made to the door header
Solution Approach 1:
The keeper assembly is extracted as a separate, removable component from the strike body. This allows the keeper to be positioned and adjusted without requiring permanent cuts to the door header, maintaining structural integrity while enabling electrical latch release functionality.
Solution Approach 2:
A mounting plate serves as an intermediary between the electric strike components and the door frame. This plate distributes mounting forces and allows installation without direct attachment to the header, avoiding the need for significant cuts while enabling electrical operation.
3Ease of manufacture
If the strike is mounted far from the latch, then installation is easier, but the latch cannot be properly retained
Solution Approach 1:
The keeper assembly is designed to be adjustable in position relative to the strike body. This dynamic positioning capability allows the keeper to be precisely aligned with the latch regardless of the overall strike mounting location, ensuring proper retention while maintaining installation flexibility.
4Ease of manufacture
If a fixed position electric strike is used, then manufacturing is simpler, but it cannot accommodate various door latch spacings
Solution Approach 1:
The electric strike is segmented into modular components that can be independently positioned and adjusted. This modularity allows the device to accommodate various latch spacings while maintaining simple manufacturing of individual standardised components.
Solution Approach 2:
The keeper assembly and actuator assembly are designed with adjustable positioning mechanisms, allowing them to be repositioned to accommodate different latch spacings. This dynamic adjustability provides versatility without complicating the manufacturing of the base components.
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
Facilitates efficient and cost-effective installation of electric strikes on doors by eliminating the need for extensive frame modifications, ensuring secure locking and easy release without compromising the door's structural integrity.
Implementation Method 1
The actuator assembly includes a solenoid and a plunger selectively engageable with an end of the slide bar
Data Source
AI summary
A modular surface mounted electric strike system for use with a door latch assembly to selectively secure a door in a closed position within a door frame is provided. The system includes a base plate configured to be mounted to a surface of the door frame. The base plate includes at least one slot extending along a longitudinal axis of the base plate. An electric strike module has a keeper and a housing to receive a door latch of the door latch assembly. The electric strike module includes a mating feature configured to engage the slot to position the electric strike module along the longitudinal axis of the base plate. The electric strike module is configured to be fixedly positioned to the base plate. The keeper is positioned on the base plate to align with the door latch when the door is in the closed position.