Blind Fastener Assembly With Nested Tool Installation
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Solution Overview
Problem
Existing blind fasteners are difficult to install due to the need to insert an inner stud through an aperture, requiring a tool that can facilitate quick and easy installation.
Innovation Solution
A fastener assembly comprising an inner stud with an externally and internally threaded shank, a spiral structure, and an installation tool with a spanner knob that allows for easy threading and tightening of the outer nut onto the inner stud, compressing the spiral structure like a washer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an inner stud is inserted through an aperture to create a blind fastener, then the fastener provides strong mounting capability, but the installation process becomes difficult and time-consuming
Solution Approach 1:
The installation tool is inserted through the aperture first, then the inner stud is nested onto the tool's elongate body. The outer nut is then threaded onto the inner stud while the entire assembly remains on the installation tool. This nesting approach allows the fastener components to be assembled in a confined space through the aperture without requiring access to the other side of the wall.
Solution Approach 2:
The installation tool acts as an intermediary device that facilitates the assembly of the blind fastener through the aperture. The tool's elongate body with external threads engages with the inner stud's internal threads, and the spanner knob engages with the outer nut, allowing all components to be threaded and tightened sequentially through the aperture without requiring complex manual manipulation.
2Adaptability or versatility
If traditional blind fastener installation methods are used, then the fastener can be installed through an aperture, but the installation requires complex manual threading and tightening operations
Solution Approach 1:
The installation tool combines multiple functions into a single device: the elongate body with external threads serves as both the insertion guide and the threading mechanism for the inner stud, while the spanner knob integrated on the elongate body serves as both a tightening tool for the outer nut and a removal tool. This merging of functions reduces the complexity of operations required during installation.
Solution Approach 2:
The installation tool is designed with multi-functionality to handle all aspects of blind fastener installation through a single device. The elongate body can thread the inner stud, the spanner knob can tighten the outer nut, and the entire assembly can be used to install and subsequently remove the fastener, eliminating the need for multiple specialized tools or complex manual operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables quick and easy installation of blind fasteners through a wall aperture, providing superior strength and ease of use compared to traditional methods.
Implementation Method 1
The inner stud has an externally threaded shank, and further has an internally threaded bore. The distal end may threadedly engage the internally threaded bore of the inner stud.
Implementation Method 2
The outer nut has an inner conduit with an internal thread that may be threadedly engaged with the externally threaded shank of the inner stud.
Implementation Method 3
the spanner knob may be used to turn the outer nut with respect to the inner stud, and thereby threadedly tighten the outer nut on the inner stud, which functions to compress the spiral structure in a washer-like structure.
Data Source
AI summary
A fastener for mounting through an aperture of a wall, the aperture having an aperture diameter. The fastener has an inner stud sized to fit through the aperture of the wall, the inner stud having an externally threaded shank, and further having an internally threaded bore. A spiral structure operably connects with the inner stud. An installation tool comprises an elongate body that extends from a proximal end to an externally threaded distal end, wherein the distal end may threadedly engage the internally threaded bore of the inner stud. An outer nut has an inner conduit with an internal thread that may be threadedly engaged with the externally threaded shank of the inner stud. The installation tool further includes a spanner knob threadedly mounted on the elongate body, the spanner knob having a first engagement structure that removably engages a second engagement structure of the outer nut such that the spanner knob may be used to turn the outer nut with respect to the inner stud, and thereby threadedly tighten the outer nut on the inner stud, which functions to compress the spiral structure in a washer-like structure.