Board Corner Fastener Guide for Hidden Screw Alignment
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Solution Overview
Problem
Conventional fastener installation tools often fail to precisely and consistently position screws along the corners of boards, leading to aesthetically displeasing misalignments and visibility issues, especially when installing hidden screws in wooden boards.
Innovation Solution
A fastener installation tool with a handle and a nose assembly featuring movable and fixed teeth that engage the corners and sides of boards, allowing precise alignment and consistent placement of fasteners, ensuring they are concealed from view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional installation tools are used, then fastener installation can be completed, but the fasteners are not precisely positioned and appear conspicuous
Solution Approach 1:
The guide assembly acts as an intermediary between the installation tool and the board, providing precise positioning through its bore and engagement features. The guide defines the exact insertion path and depth for the fastener, while the engagement features interface with the board corner to ensure accurate positioning without requiring complex tool operations
Solution Approach 2:
The guide assembly is pre-positioned on the board corner before fastener installation. The engagement features are designed to automatically align the guide with the board corner, performing the positioning action in advance and eliminating the need for complex manual alignment during operation
2Shape
If screws are advanced at an angle to hide them, then aesthetic appearance is improved, but precise positioning becomes more difficult
Solution Approach 1:
The guide assembly's engagement features are designed to automatically self-align with the board corner geometry. The V-shaped or U-shaped engagement features naturally conform to the rounded corner shape, causing the guide bore to automatically position itself at the correct angle and location without requiring manual adjustment or complex positioning procedures
3Manufacturing precision
If tools are designed for pre-board placement, then corner positioning is accurate, but post-board placement consistency is poor
Solution Approach 1:
The guide assembly is designed with engagement features that can accommodate boards with or without adjacent boards present. The same guide structure provides accurate corner positioning in both scenarios, eliminating the need for different tools or attachments for pre-board and post-board placement situations
Data Source
AI summary
A fastener installation tool can include a handle and a nose assembly including a guide defining a bore having a longitudinal axis, a first tooth adjacent the bore and a second tooth. The first tooth can fixedly join with the nose assembly and selectively engage a round upper corner between an upper surface and a side surface of a board. The second tooth can join with the nose assembly and can move from a retracted mode to an extended mode in which the second tooth is configured to engage the side of the board. The longitudinal axis can be oriented by the first and/or second tooth engaging the board to place that axis at a point of intersection with the board at a first depth being 0.010 inches to 0.125 inches, inclusive, or about 0.050 inches, below a lower surface of the handle. A related method of use is provided.