Pocket Hole Jig with Universal Coupling and Depth Scale
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Solution Overview
Problem
Conventional pocket hole jigs are inconvenient to use with screws of various sizes due to the need for multiple extension blocks, making it difficult to accurately measure wooden workpiece thickness and determine screw size.
Innovation Solution
A pocket hole jig comprising a body with accommodation orifices for a driller, a holder with a scale section for position adjustment, and a fitting sleeve for depth measurement, along with magnetic attraction elements for secure alignment, allowing for precise angle drilling and screw size determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple extension blocks are used to accommodate screws of various sizes, then the jig can handle different screw sizes, but the device complexity and ease of operation deteriorate due to the need to switch between multiple blocks
Solution Approach 1:
The patent applies universality by designing a single extension block with a universal coupling structure that can accommodate different screw sizes through a standardized interface. The coupling post with threaded hole and the corresponding orifice create a universal connection system that works with various screw diameters without requiring multiple specialized blocks, thereby reducing device complexity while maintaining versatility.
Solution Approach 2:
The extension block is designed to be movable and adjustable rather than fixed. The coupling post can be inserted into different orifices on the body, and the extension block can be repositioned along the longitudinal axis, allowing dynamic adjustment to accommodate different screw sizes and drilling requirements, eliminating the need for multiple static extension blocks.
2Adaptability or versatility
If multiple extension blocks are used for different screw sizes, then various screw sizes can be accommodated, but ease of operation worsens due to the inconvenience of selecting and switching blocks
Solution Approach 1:
The universal coupling mechanism allows a single extension block to serve multiple screw size requirements. The standardized orifice and coupling post interface enable one block to replace multiple specialized blocks, significantly improving ease of operation by eliminating the need to select and switch between different extension blocks for different screw sizes.
3Ease of manufacture
If the conventional jig structure is used, then basic drilling function is provided, but measurement precision deteriorates due to the inability to easily measure workpiece thickness and determine screw size
Solution Approach 1:
The extension block incorporates self-measuring features where the coupling post length and positioning directly indicate the required screw length and size. The block's physical dimensions and markings provide self-service measurement capabilities, allowing users to determine screw size and workpiece thickness directly from the tool itself without separate measuring instruments, thereby improving measurement precision while maintaining ease of manufacture.
Data Source
AI summary
A pocket hole jig contains: a body, a holder, and a fitting sleeve. The body includes at least one accommodation orifice configured to house a driller, each accommodation orifice tilts downwardly and extends toward a bottom of the body, wherein the body also includes a first marking portion arranged on a first side surface thereof. The holder includes an operation room in which the body is fitted and moves relative to the holder, at least one through groove formed on a bottom of the holder so as to correspond to the at least one accommodation orifice, and a first scale section arranged on a first side surface thereof and aligning with the first marking portion. The fitting sleeve is fitted with the driller, and the holder further includes a depth scale section for measuring depths of holes drilled on wooden workpieces by the driller.