Fluid-Locked Fastener Setting Tool for Stable Temporary Fixing
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Solution Overview
Problem
Current installation tools for fixing structures require significant effort to maintain pressure during assembly, which tends to deregulate over time, leading to inefficiencies in the installation process.
Innovation Solution
The tool incorporates a pressure chamber, ducts, blocking elements, and fluid input mechanisms to maintain pressure and secure the fixing in place, along with a ejection system for efficient assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual pressure maintenance is used during fastener installation, then the fastener can be secured in place, but significant force (around 5 kg) must be continuously applied and maintained, which becomes deregulated over time
Solution Approach 1:
The patent replaces the manual mechanical pressure maintenance system with a pneumatic system. A pressure chamber receives pressurized fluid (gas or liquid) that acts on the fastener body through a conduit, eliminating the need for continuous manual force application. The pneumatic pressure is automatically maintained by the fluid supply system, ensuring consistent pressure without operator intervention.
Solution Approach 2:
The patent implements a pneumatic/hydraulic pressure maintenance system where a pressure chamber receives pressurized fluid through a fluid inlet. The pressurized fluid is directed through a conduit to act on the fastener body, providing automatic and stable pressure maintenance during installation. This eliminates the need for manual force application and ensures consistent pressure throughout the process.
2Reliability
If locking mechanisms are added to secure the fastener during installation, then the fastener stability is improved, but the device complexity increases
Solution Approach 1:
The patent introduces locking elements as intermediary components that mediate between the pressure chamber system and the fastener body. These locking elements engage with corresponding features on the fastener to provide mechanical retention during installation. The locking mechanism works in conjunction with the pneumatic pressure system, where the locking elements prevent fastener displacement while the pressurized fluid ensures proper seating and sealing.
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
This solution ensures consistent and efficient assembly and disassembly of fixings by maintaining pressure and using a fluid-powered ejection system, reducing the effort required and improving the stability of the installation process.
Implementation Method 1
a pressure chamber, of annular shape, arranged in the tool body around the first opening; at least one conduit, arranged radially relative to the second axis and connecting the pressure chamber to the first opening
Implementation Method 2
an ejection piston, axially movable in the internal housing, so as to define an ejection chamber inside said internal housing; and a second fluid inlet, opening onto the ejection chamber; the installation tool being configured so that an excess fluid pressure in the ejection chamber is capable of moving the ejection piston towards the second opening
Data Source
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AI summary
The invention relates to a setting tool (14), comprising: - a tool body (50) including a first opening adapted to lock the axial end of the body (26) of a fastener (12); - an actuating device (52), rotatable relative to the tool body and including a second opening adapted to lock an actuating element (28) of the fastener; - a pressure chamber (120) formed in the tool body; - a conduit (122) connecting the pressure chamber to the first opening (62); - a locking element (124) movable in the conduit between a retracted position and a protruding position; and - a fluid inlet (55) opening onto the pressure chamber. Fluid entering the pressure chamber moves the locking element (124) to the protruding position.