Door Shelter Lock Installation Jigs for Precise Floor Strike Alignment
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Solution Overview
Problem
Existing installation methods for door shelter locks and floor strikes are inadequate, leading to improper installation and ineffective operation due to lack of precise alignment tools, which is critical for securing doors during emergencies.
Innovation Solution
A specialized tool set comprising a first jig (FJ) for marking precise locations on the door for mounting brackets and forming a well in the floor for the floor strike, and a second jig (SJ) with a vertically-mounted drill for accurately drilling the well, ensuring consistent and precise positioning of the door assembly and floor strike.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a portable door shelter lock is installed without a specialized installation tool, then the installation process is simpler and faster, but the positioning precision of the door hardware and floor strike will be insufficient, causing the lock to malfunction
Solution Approach 1:
The installation tool is divided into two separate jigs: a first jig for installing door hardware and a second jig for forming the floor strike. Each jig is specialized for its specific task, allowing for precise positioning without requiring a single complex multi-functional tool. This segmentation resolves the contradiction by providing high positioning precision through specialized simple tools rather than one complex tool.
Solution Approach 2:
The jigs are designed to pre-mark and pre-position the door hardware and floor strike locations before final installation. The first jig marks drill holes and hardware positions on the door, while the second jig marks and forms the floor strike well. This preliminary action ensures precise positioning is achieved before the actual installation, resolving the contradiction between precision and tool complexity.
2Reliability
If the door hardware and floor strike are installed at improper locations, then the installation process is faster without specialized tools, but the door shelter lock will not function properly during security events
Solution Approach 1:
The jigs perform preliminary marking and positioning actions to ensure the door hardware and floor strike are installed at the correct locations. The first jig marks the exact positions for door hardware mounting, and the second jig marks and forms the floor strike well at the proper location. This preliminary action prevents installation errors that would compromise reliability, while the streamlined jig design minimizes the time lost during installation.
Solution Approach 2:
The jigs replace complex measurement and positioning calculations with simple mechanical alignment features. The jigs have built-in reference surfaces and marking mechanisms that automatically position the hardware and floor strike at the correct locations through mechanical alignment rather than requiring manual measurement and calculation, thus ensuring reliability without significant time loss.
3Manufacturing precision
If a specialized installation tool is used to ensure precise alignment, then the door shelter lock functions correctly, but the installation process becomes more complex and time-consuming
Solution Approach 1:
The installation process is segmented into two distinct operations using two specialized jigs: one for door hardware installation and one for floor strike formation. Each jig is optimized for its specific task with simple, focused functionality rather than complex multi-functional design. This segmentation maintains high alignment precision for each component while improving overall installation efficiency by eliminating the need for a single complex tool.
Solution Approach 2:
The jigs are designed to be self-aligning and self-marking tools that automatically position themselves and mark the correct locations without requiring complex adjustment mechanisms or skilled operation. The first jig self-aligns to the door edge and automatically marks hardware positions, while the second jig self-aligns to mark and form the floor strike well. This self-service capability ensures precise alignment while maintaining high installation efficiency through simplicity.
Data Source
AI summary
A first installation tool (FIT) for defining the precise location of door hardware on a door that receives a portable locking device (PLD) therein and a second installation tool (SIT) for forming a floor strike at a precise floor location that the PLD interacts with when installed in the door hardware. The FIT includes a pair of adjustable vertically-oriented panels with apertures therein, and a vertically-adjustable base, for releasably securing to the bottom of the door to define and guide a drill to form door apertures for securing the door hardware thereto. The SIT includes a drill, mounted vertically on a base that can be precisely moved horizontally. The SIT includes a coupling assembly that releasably engages with the door apertures. When activated, the drill drills down vertically to remove floor material and is incrementally moved horizontally to forms a precise well in the floor to form the floor strike.