Pivotable Nut Blind Anchor Bolt for One-Sided Access
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Solution Overview
Problem
Existing blind-hole anchoring mechanisms face challenges in accessing substrates from only one side, requiring large apertures and struggling with bolt alignment, making them impractical for certain applications.
Innovation Solution
An anchor assembly with a pivotable nut that changes alignment from vertical to perpendicular, allowing insertion through small openings, and a slideable sleeve for adjustable length, along with a flange and stop washer for secure anchoring, facilitating use in difficult access scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a large aperture is used for insertion, then the anchor assembly can be easily inserted, but the aperture becomes impractically large for certain applications
Solution Approach 1:
The anchor assembly is divided into separable components: a rod housing containing the anchor mechanism, and a nut that threads onto the rod. This segmentation allows the components to be inserted separately through a small aperture, then assembled inside the substrate, achieving easy insertion without requiring a large aperture.
Solution Approach 2:
The nut is designed to nest within the rod housing during insertion, with the nut initially positioned inside or alongside the rod housing. This nested configuration allows both components to pass through a small aperture together, then the nut is threaded onto the rod exterior after insertion, eliminating the need for a large aperture.
2Area of stationary object
If the nut is in vertical alignment with the rod housing for insertion, then the assembly can be inserted through small openings, but the threaded opening is not aligned for securing the bolt
Solution Approach 1:
The nut is designed with rotational freedom to pivot between different orientations. During insertion, the nut pivots to align its threaded opening vertically with the rod housing opening for easy insertion through small openings. After insertion, the nut can pivot to a perpendicular orientation to align the threaded opening horizontally with the rod, enabling proper bolt securing.
Solution Approach 2:
The nut's threaded opening can be oriented in different dimensional directions relative to the rod housing. By allowing the nut to pivot, the threaded opening transitions from a vertical alignment (for insertion) to a perpendicular/horizontal alignment (for bolt securing), solving the alignment problem by utilizing rotational movement in a different orientation.
3Adaptability or versatility
If the anchor assembly is designed for one-sided access, then it works for blind-hole applications, but alignment and securing become more difficult
Solution Approach 1:
By separating the anchor mechanism (in the rod housing) from the fastening component (the nut), the design enables one-sided access application. The rod housing with anchor is inserted first through the small aperture from the accessible side, then the nut is threaded onto the rod from the same side, allowing complete assembly without requiring access from the other side of the substrate.
Solution Approach 2:
The pivotable nut design facilitates one-sided access by allowing the nut to be positioned and threaded onto the rod from the accessible side only. The rotational freedom enables the nut to align properly with the rod's threaded opening during assembly, making the alignment and securing operations easier even with limited access from one side.
Data Source
AI summary
An anchor assembly having a nut which is pivotably connected to a sleeve which is slideable along a rod housing. The nut is pivotable to and from a position in vertical alignment with rod housing and a position perpendicular to the rod housing in which a threaded nut opening is in vertical alignment with a opening of the rod housing. A flange is disposed above the rod housing and a stop washer is disposed above the flange, the rod insertable within both the flange and washer. The threaded rod is insertable through the rod opening of the rod housing and threadable within the threaded opening of the nut when the nut is in a position perpendicular to the rod housing. When the nut of the anchor assembly is positioned into vertical alignment with the rod housing, the assembly can fit into a narrow hole. Once the nut clears the opening, the nut moves into the position perpendicular to the rod housing so that the rod may be threaded through the nut opening. The rod is threaded through the nut opening until the washer contacts the flange at which point the nut is drawn up to a bottom side of a substrate surface by way of the slideable sleeve.