Adjustable Door Drill Hole Template for Mortise Locks
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Solution Overview
Problem
Existing templates for marking drill hole positions on doors with mortise locks are inadequate for accurately positioning holes regardless of lock case depth, door thickness, mortise position, or lip presence, requiring customers to manually mark drill positions.
Innovation Solution
A template with adjustable positioning means, including guide rails and click-in systems, allows precise alignment of marking members parallel to the door surface, accommodating various mortise lock depths and door configurations, and includes extendable supports for adjusting hole positions on both main surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed template is used for marking drill hole positions, then the template structure is simple, but it cannot accommodate various lock case depths, door thicknesses, mortise positions, or lip configurations
Solution Approach 1:
The template employs adjustable marking members that can be positioned at different locations along the template body, allowing the template to adapt to various lock case depths and door configurations. The marking members are movable relative to the template body, enabling dynamic adjustment of marking positions to match different installation scenarios.
Solution Approach 2:
The template is divided into a template body and separate adjustable marking members. This segmentation allows the marking members to be independently positioned and adjusted, providing versatility for different door configurations while keeping the template body structure relatively simple.
2Measurement precision
If manual marking of drill positions is performed, then no special template is needed, but marking accuracy and efficiency are reduced
Solution Approach 1:
The template pre-establishes the correct geometric relationships and distances between marking points based on standard door hardware configurations. By positioning the template on the door, the correct drill hole positions are automatically determined without requiring manual measurement or calculation, thus improving both accuracy and efficiency.
3Adaptability or versatility
If the template is made adjustable for different configurations, then versatility is improved, but the ease of operation and alignment is reduced
Solution Approach 1:
The template body serves as an intermediary between the door surface and the marking members. It provides reference surfaces that contact the door (such as the end surface and main surface) and translates these contacts into precise positioning of the marking members, ensuring they are automatically aligned parallel to the door surfaces regardless of adjustments.
Data Source
Figure 1~2
Figure 3~6
AI summary
The invention relates to a template (1) for marking at least one drill hole position on a door having two main surfaces (5) and an end surface (6) having a mortise for a mortise lock and a recess for the forend (7) of the mortise lock, wherein the template (1) comprises a marking member (2) to be positioned adjacent to, e.g. abutting, a main surface (5) of the door, the marking member (2) comprising at least one marking means for marking the at least one drill hole position on the main surface (5), wherein the template further comprises a support (3) having an end for abutment (13) formed to be positioned in the recess (7) and to hold the marking member (2) adjacent a main face (5). The template (1) comprises positioning means for adjusting the position of the at least one marking means of the marking member (2) with respect to the end for abutment (13), parallel to the main surfaces of the door.