Lockable Push-Through Latch with Motorized Lock Pin
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Solution Overview
Problem
Conventional push-through latches lack advanced locking mechanisms that can be controlled electronically, making them insecure and inconvenient for modern access control systems.
Innovation Solution
A lockable push-through latch system featuring a latch assembly with a movable bolt head and lock pin, where the lock pin is actuated by a motor in response to signals from an access control device, allowing for secure and controlled locking and unlocking operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional push-through latch is used, then the structure is simple and easy to manufacture, but the security level is insufficient and cannot be integrated with electronic access control systems
Solution Approach 1:
The patent combines a conventional push-through latch with a lock pin mechanism and electronic access control system into a single integrated lock assembly. The lock pin can independently engage with the keeper to provide enhanced security, while the original latch bolt maintains basic latching functionality. This merging of components resolves the contradiction by achieving high security without completely redesigning the basic latch structure.
Solution Approach 2:
The lock assembly provides multiple functions: the latch bolt handles basic door holding, the lock pin provides secure locking when engaged, and the motorized actuation enables electronic access control integration. This multi-functionality allows the system to meet high security requirements while maintaining compatibility with existing door hardware configurations.
2Extent of automation
If a motorized lock pin mechanism is added, then electronic access control integration is enabled, but the device complexity increases
Solution Approach 1:
The patent introduces a motor as an intermediary device that converts electrical signals from the access control system into mechanical motion to actuate the lock pin. This intermediary approach enables electronic control without requiring complex direct integration between the electronic system and the mechanical locking components, thereby reducing overall system complexity while maintaining automation.
3Adaptability or versatility
If the lock pin is made independent of the bolt head, then the lock pin can be actuated independently, but the device complexity increases
Solution Approach 1:
The patent segments the locking function into two independent components: the latch bolt for basic door holding and the lock pin for secure locking. This segmentation allows each component to be actuated independently through separate mechanisms (manual operation for the latch, motorized actuation for the lock pin), providing versatility in operation modes while keeping each individual mechanism relatively simple.
Data Source
AI summary
A lock having a latch assembly with a bolt head freely movable between an extended position and a retracted position. The latch assembly also includes lock pin that is movable between a locked position and an unlocked position, which may be moveable by a motor and/or biasing mechanism. The lock also has a strike assembly including a strike housing for receiving the bolt head. The strike housing includes a keeper biased to a latched position relative to the bolt head. When the lock pin is in the locked position, the lock pin engages the keeper to hold the keeper in the latched position, and thus the bolt head in the extended position in the strike housing. The lock also includes an access control system for controlling the motor of the lock.