Passive Lock Assembly Stop Member Mechanism
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Solution Overview
Problem
Prior multi-point locking systems face issues with controlling the locking and unlocking of passive locks when the active lock is still engaged, leading to potential damage to doors or locking mechanisms during attempted opening of the passive door.
Innovation Solution
A passive lock assembly with a housing, receiver, bolt, actuator, and stop member, where the stop member is pivotably connected to the housing and biased to prevent accidental retraction of the bolt, ensuring the passive door remains locked until the active door is opened, utilizing a handle-operated actuator to move the bolt between extended and retracted positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the passive door is made movable to allow independent opening, then the ease of operation is improved, but the reliability deteriorates due to potential damage when active lock is still engaged
Solution Approach 1:
The stop member is positioned to preemptively block the actuator's movement path when the active door is locked. This preliminary obstruction prevents the passive door from being opened while the active lock is still engaged, avoiding damage to the locking mechanism or doors. The stop member only moves out of the way when the active door is properly unlocked, ensuring safe operation.
2Reliability
If the passive door is locked to prevent independent opening, then the reliability is improved, but the ease of operation deteriorates due to inability to open when needed
Solution Approach 1:
The stop member is designed as a movable component that dynamically changes its position based on the state of the active door. When the active door is locked, the stop member is in the blocking position to prevent opening. When the active door is unlocked, the stop member moves to the non-blocking position, allowing the passive door to be opened. This dynamic behavior enables the system to adapt to different operational states.
Data Source
AI summary
A passive lock assembly is suitable for use with a door mounted to a door frame. The passive lock assembly includes a housing, a bolt, an actuator, and a stop member. The housing is mounted on the door. The bolt extends from the housing and is moveable between an extended position and a retracted position. The actuator is supported by the housing and is operably connected to the bolt. Additionally, the actuator is moveable to move the bolt between the extended position and the retracted position. The stop member is pivotably connected to the housing and pivotable between a first position and a second position. In the first position, the stop member engages an engagement surface of the actuator to obstruct movement of the actuator and prevent movement of the bolt to the retracted position, and in the second position, the stop member does not obstruct movement of the actuator.