Electric Strike Lock Eccentric Adjusting Mechanism
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Solution Overview
Problem
Existing electric strike locks are inconvenient to convert between fail-safe and fail-secure configurations due to complex and time-consuming adjustment processes.
Innovation Solution
An electric strike lock design featuring a strike body, latch, keeper, and adjusting section with an elliptical adjusting hole and piece, allowing the lock to be easily switched between fail-safe and fail-secure modes by rotating the adjusting piece 180°, utilizing a solenoid and movable rod to block or unblock the latch accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional adjustment structures are used to convert between fail-safe and fail-secure modes, then the lock can be adjusted between modes, but the adjustment process becomes complicated and time-consuming
Solution Approach 1:
The patent employs an eccentric adjusting piece with an off-center hole that rotates within an elliptical adjusting hole. This asymmetric design allows the stop block to be positioned at different locations relative to the latch, enabling conversion between fail-safe and fail-secure modes through simple rotation rather than complex structural changes. The eccentric positioning creates two distinct operational states that are easily switchable.
2Adaptability or versatility
If traditional adjustment structures are used to convert between fail-safe and fail-secure modes, then the lock can be adjusted between modes, but the manufacturing process consumes excessive time
Solution Approach 1:
The patent transforms a static lock configuration into a dynamic one by introducing a rotatable adjusting piece with an eccentric hole. This dynamic element allows the stop block position to be changed on-demand through rotation, enabling quick switching between fail-safe and fail-secure modes without time-consuming manufacturing or assembly processes. The adjustment can be performed in situ during installation or later maintenance.
3Reliability
If the stop block is positioned to block the latch, then the lock operates in fail-secure mode, but the adjustment mechanism becomes complicated
Solution Approach 1:
The adjusting piece serves multiple functions: it positions the stop block for fail-secure mode, positions the stop block for fail-safe mode, and provides a simple rotational interface for switching between modes. This multi-functional design eliminates the need for separate adjustment mechanisms for each mode, reducing overall device complexity while maintaining both fail-secure and fail-safe operational capabilities.
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 simple and efficient conversion between fail-safe and fail-secure modes, overcoming the complexity and time constraints of previous adjustment methods, ensuring reliable locking mechanisms based on power availability.
Implementation Method 1
connecting to a solenoid which has a movable rod engaging through the keeper and engaging the stop block; whereby the stop block is pushed by the solenoid and moves between a position blocking the latch and a position unblocking the latch
Data Source
AI summary
An electric strike lock has a strike body, a latch having a latch bolt and a deadlatch, a keeper having a stop block to abut against the deadlatch, and an adjusting section having an elliptical adjusting hole corresponding to a screw hole on the keeper and an adjusting piece fitting a shape of the elliptical adjusting hole and having an eccentric through hole for an adjusting screw to pass through and to be screwed to the screw hole. The keeper further combined with a solenoid which has a movable rod passing through the keeper and engaging the stop block, and the elliptical adjusting hole has its major axis arranged in the same direction as an axis of the solenoid. By changing the placement of the adjusting piece, the positions of the stop block and the deadlatch can be altered to adjust the strike lock into a fail-safe or a fail-secure strike lock.