Rotatable Drill Bit Guide for Door Installation Alignment

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Solution Overview

Problem

Technicians installing security systems often damage doors by drilling through the front or rear surface due to the lack of precise alignment methods when drilling elongate holes.

Innovation Solution

A jig system with an elongate member, adjustable securing elements, and a rotatable drill bit guide that aligns the drill bit to prevent surface penetration, allowing for precise drilling through the door without damaging it.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If technicians use line of sight to align the drill bit during hand drilling, then the drilling operation can be performed without specialized equipment, but the drill bit may penetrate through the front or rear surface of the door causing damage

Engineering Contradiction:

Improvedrilling operation simplicityVSAvoiddrill bit alignment precision

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent introduces a jig as an intermediary device between the technician and the door. The jig includes a guide member with a longitudinal bore that receives the drill bit, and clamping members that secure the jig to the door. This intermediary structure provides precise alignment and control, preventing the drill bit from penetrating through the door surfaces while maintaining ease of operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The jig is positioned and clamped to the door before drilling begins. The guide member is pre-aligned along the desired drilling path, and the clamping members are secured to hold the jig in place. This preliminary positioning ensures that the drill bit follows the correct trajectory throughout the drilling operation, eliminating the need for continuous visual alignment during drilling.

Inventive Principle:

Principle #10Preliminary action

2Manufacturing precision

If a fixed drill bit guide is used, then drilling alignment is improved, but the jig cannot accommodate drill bit deflection when travelling through the door

Engineering Contradiction:

Improvedrill bit alignmentVSAvoidaccommodation of drill bit deflection

Core Design Contradiction:

Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The guide member is designed to be rotatable about its longitudinal axis, transforming it from a static structure to a dynamic one. This rotation capability allows the guide member to adapt to drill bit deflection during the drilling operation. The guide member can be rotated to realign with the drill bit's actual path, maintaining precision while accommodating unexpected deviations.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The rotatable guide member provides a feedback mechanism. During drilling, if the drill bit deflects from the intended path, the technician can observe the misalignment and rotate the guide member to correct the alignment. This real-time adjustment capability ensures that the drilling operation remains precise even when encountering unexpected resistance or deflection in the door material.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS8757939B1Drill bit jig

Publication Date: 2014.06.24 BLOCK MICHAEL

AI summary

A drill bit jig includes an elongate member, two jig securing elements and a rotatable drill bit guide. The elongate member is hollow so that one or more elongate drill bits may be stored therein. The drill bit guide includes a plurality of through holes where the axes of the through holes are parallel to the axis of the elongate member. Each of the plurality of through holes in the drill bit guide has a different diameter for accommodating drill bits of different thicknesses. The jig securing elements each include an L-shaped bolt and a door protecting material encasing one of the straight sections of the bolt.