Pivotable Claw Mounting Assembly for Electrical Devices
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Solution Overview
Problem
Existing fastening arrangements for electrical installation devices face challenges in achieving a maximum spread position with minimized space requirements, especially as modern devices incorporate more electronic components and have limited installation space.
Innovation Solution
The fastening arrangement allows the claw and nut to pivot independently, with a designed inclined surface mechanism that enables the claw to pivot from a compact position to a fully extended position, maintaining short leg lengths and minimizing installation space, while incorporating features like angled contact surfaces and latching devices for controlled pivoting and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the claw is designed with long legs to achieve a large spread angle, then the swing-out position is improved, but the installation space requirement increases
Solution Approach 1:
The claw is designed to be pivotable relative to the base body, transitioning from a retracted position during transport to a spread position during installation. This dynamic configuration allows the claw to achieve a large spread angle when needed while maintaining a compact form factor during storage and transport, effectively resolving the contradiction between spread angle and installation space requirement
2Area of stationary object
If the claw is kept short to minimize installation space, then the space requirement is reduced, but the maximum spread position is compromised
Solution Approach 1:
The pivotable claw mechanism allows short-legged claws to achieve effective long-reach positioning when spread out. The claw rotates on a pivot axis perpendicular to the base surface, enabling it to extend laterally beyond what would be possible with fixed long legs, thus achieving maximum spread position with minimized space requirements
3Reliability
If the claw is fully extended for maximum fastening capability, then the fastening performance is improved, but the transport safety is compromised due to protruding tips
Solution Approach 1:
The claw is designed in a retracted position during transport and assembly, with tips contained within the base body to eliminate injury risks. During installation, the claw is pivoted to its spread position where tips extend for effective fastening. This dynamic position change resolves the contradiction between fastening capability and transport safety
Solution Approach 2:
A latching device is provided to fix the claw in its pivoted-in position before delivery, ensuring the claw remains retracted and safe during transport. The latching device automatically releases during assembly when the claw is swiveled out, providing preliminary safety action before the fastening operation begins
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 enables a high swing-out angle of the claw, optimizing space usage, ensuring safe transport and assembly by keeping the claw tips retractable during transport and allowing for easy installation, while maintaining a compact form factor.
Implementation Method 1
The application of force when screwing in the screw between the nut and the connecting web takes place via an inclined surface. As a result, when the screw is screwed into the nut, the claw is pivoted from the pivoted-in position into the expanded position
Data Source
Figure 1~6
Figure 7
AI summary
A fastening assembly for securing an electrical installation device comprises a base body with a base surface and a claw that can be pivoted into an expanding position by tightening a screw. The force applied between a nut and the connecting web of the claw is exerted via an inclined surface.