Sliding Door Electric Strike With Translating Keeper Release
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Solution Overview
Problem
Existing electric strikes for sliding doors require significant modifications to the door frame cut-out, increasing installation time and cost, and there is a need for a solution that allows reliable release of the sliding door from the frame without such modifications.
Innovation Solution
An electric strike with a strike housing, actuating mechanism, keeper, and blocking member that allows the keeper to move between latched and unlatched positions, utilizing slots and extension springs for stable translation and rotation, enabling the door latch to be released without enlarging the frame cut-out.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a prior art electric strike with a rotatably mounted keeper is used, then the door can be released electrically, but the cut-out pocket in the door frame must be significantly enlarged requiring additional mounting points
Solution Approach 1:
The patent transitions the keeper from a purely rotational movement (prior art) to a translational movement along a cam surface. This dynamic change allows the keeper to move linearly between engaged and disengaged positions without requiring rotational clearance, thereby eliminating the need to enlarge the cut-out pocket in the door frame.
Solution Approach 2:
The invention changes the movement parameter of the keeper from rotational (angular displacement) to translational (linear displacement). This parameter change enables the keeper to function within the existing cut-out pocket dimensions while still providing electrical release capability, thus resolving the contradiction between automation and ease of manufacture.
2Extent of automation
If a prior art electric strike is installed, then electrical access control is enabled, but the installation time and expense increase due to significant frame modifications
Solution Approach 1:
By changing the keeper's movement from rotational to translational along a cam surface, the device fits within standard cut-out pockets without requiring frame enlargement. This eliminates the need for additional mounting points and reduces installation time while maintaining controlled access functionality.
Solution Approach 2:
The electric strike is designed to function within the universal standard cut-out pocket dimension, making it compatible with existing door frames without customization. This multi-functional design allows the device to provide electrical release capability while accommodating standard installation requirements, thereby reducing installation time and cost.
3Ease of manufacture
If a standard strike is used with a hook latch, then manual door securing is achieved, but electrical access control cannot be implemented
Solution Approach 1:
The patent merges the manual hook latch mechanism with an electrical release system in a single integrated device. The keeper's translational movement along the cam surface allows it to engage with the hook latch manually while also enabling electrical actuation through a solenoid or motor, thus combining both functions in one component that installs in a standard cut-out pocket.
Solution Approach 2:
The electric strike is designed to perform multiple functions: manual engagement via hook latch, electrical release via actuator, and positioning within a standard cut-out pocket. This multi-functionality resolves the contradiction by enabling both manual securing and electrical access control through a single universal device.
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 provides a reliable and efficient mechanism for releasing the sliding door from the frame without modifying the cut-out, reducing installation time and cost, and allowing controlled access through authentication devices.
Implementation Method 1
a first extension spring configured for biasing the blocking member to rotate about the first axis
Implementation Method 2
a second extension spring configured for biasing the keeper to translate and rotate
Data Source
AI summary
An electric strike for use with a sliding door is provided. The strike comprises a housing defining a cavity including first and second walls, each having first and second slots defined therein. A keeper is disposed within the cavity and movable between latched and unlatched positions. The keeper includes first and second ends, wherein each includes respective outwardly extending first and second keeper pins. The first and second keeper pins extending from each end of the keeper are disposed in the respective first and second slots. A blocking member is pivotably mounted to the housing and includes first and second portions. The second portion of the blocking member is engaged with the first keeper pin when the first portion of the blocking member is selectively engaged with a plunger of an actuating mechanism in the first engaged position to selectively maintain the keeper in the latched position.