Mortise Lock Escutcheon Alignment and Door Strength
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Solution Overview
Problem
Traditional mortise lock systems are difficult to install, prone to alignment issues, and weaken doors, providing potential entry points for intruders while detracting from the door's aesthetic with exterior fasteners.
Innovation Solution
A locking system with a mortise case and escutcheon featuring an angled cam channel and screw mechanism for alignment and a gear box with a worm gear and motor for electronic operation, eliminating exterior screws and enhancing security and strength by pulling the escutcheon toward the door's centerline.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mortise lock systems are installed using exterior fasteners, then the lock can be securely fastened to the door, but the door's aesthetic is degraded and potential entry points for intruders are created
Solution Approach 1:
The patent removes exterior fasteners from the locking system design. The escutcheon is retained solely by interior mounting components (mortise case, mounting plate, and interior fasteners), eliminating visible exterior screws or bolts that would compromise both aesthetics and security.
Solution Approach 2:
The patent employs a nested structure where the escutcheon is mounted within the door surface, the mounting plate is nested within the escutcheon, and the mortise case is nested within the door pocket. This nested arrangement allows secure fastening entirely within the door's interior structure, preventing exterior access to fasteners.
2Ease of manufacture
If traditional mortise locks are installed by removing door interior, then the lock can be mounted, but the door is weakened and vulnerable to forced entry
Solution Approach 1:
The mortise case is pre-formed with an integrated mounting plate and recesses for interior fasteners before installation. This preliminary preparation allows the lock to be installed by simply positioning the pre-assembled unit into the mortise pocket and securing it with interior fasteners, avoiding the need to remove door interior material during installation.
Solution Approach 2:
The patent combines the escutcheon, mounting plate, and fastener retention features into a single integrated mortise case assembly. This merging of components eliminates the need for separate door modifications and preserves door structural integrity by requiring no removal of door interior material.
3Ease of manufacture
If traditional mortise lock systems are installed, then the lock can be mounted, but alignment issues and difficult installation occur
Solution Approach 1:
The mounting plate features an asymmetric design with a specific pattern of recesses and protrusions that correspond to the mortise case structure. This asymmetric configuration provides self-alignment during installation, ensuring the escutcheon is properly positioned relative to the door centerline and mortise pocket without requiring complex alignment procedures.
Solution Approach 2:
The integrated mounting plate with its specific recess pattern enables the installer to self-align the escutcheon to the door centerline during installation. The geometry of the mounting plate and mortise case interfaces automatically guides proper positioning, eliminating the need for external alignment tools or complex adjustment procedures.
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 system simplifies installation, ensures proper alignment, strengthens the door, and provides secure electronic operation without visible fasteners, enhancing both aesthetics and security.
Implementation Method 1
The electromechanical drive has a motor, a worm with gear teeth, and a worm gear with gear teeth that is actuated by the worm
Implementation Method 2
The electromechanical drive has a motor
Data Source
AI summary
The disclosure describes a locking system for a door with a mortise pocket. The locking system has a mortise case within the mortise pocket. The mortise case defines an alignment hole. The locking system also has a gear box with a worm gear that defines a notched passage that receives a lock knob shaft. A worm within the gear box is coupled to a motor that rotates the worm. The worm engages the worm gear such that the worm gear rotates when the worm rotates. A control board in the gear box is adapted to receive electronic signals and transmit them to the motor to cause the motor to rotate the worm. The gear box also has a worm gear hub that defines a keyed passage and a hub tab. The worm gear hub fits within the notched passage and the keyed passage receives the lock knob shaft. The worm gear also has two notches that the hub tab contacts individually when the gear hub rotates within the notched passage.