Cable Tray Splice Assembly Using Tool-Free Snap-Fit Connectors
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Solution Overview
Problem
Existing cable tray assemblies require additional tools for attaching splice plates to cable tray sections, which increases assembly time and complexity.
Innovation Solution
The use of snap-fit connectors with resiliently deflectable arms that engage aligned holes in the splice plate and cable tray sections, allowing for tool-free attachment of the splice plate to the cable tray sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If screw-type fasteners and splice plates are used to attach cable tray sections, then the connection strength is sufficient, but the assembly time and complexity increase
Solution Approach 1:
The patent replaces the traditional screw-type fastener system with a snap-fit connector system that uses resiliently deflectable arms. These arms can be inserted through aligned holes and engage with the cable tray sections without requiring screws, wrenches, or other tools, thereby eliminating the complex mechanical fastening process while maintaining adequate connection strength
Solution Approach 2:
The snap-fit connectors are designed to be self-installing through a simple snap-in motion. The resiliently deflectable arms automatically engage with the cable tray sections upon insertion, requiring no additional fastening steps or tools. This self-service mechanism dramatically reduces assembly time and complexity compared to traditional screw-based systems
2Reliability
If additional tools are used for attaching splice plates, then the attachment reliability is improved, but the assembly time increases
Solution Approach 1:
The patent eliminates the need for screwdrivers, wrenches, or other attachment tools by using snap-fit connectors with resiliently deflectable arms. These arms provide reliable attachment through their elastic engagement with the cable tray sections, achieving sufficient attachment reliability without any additional tools, thereby dramatically reducing assembly time
3Productivity
If snap-fit connectors with resiliently deflectable arms are used, then the assembly time is reduced, but the connection strength may be compromised
Solution Approach 1:
The patent utilizes the elastic properties of the resiliently deflectable arms, changing the mechanical parameters from rigid screw fastening to flexible elastic engagement. The arms are designed with specific material properties and geometric configurations that allow them to deflect during installation and maintain constant engagement force, providing sufficient connection strength for cable tray applications while enabling rapid tool-free assembly
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 rapid and tool-free assembly of cable tray sections by using snap-fit connectors that securely attach the splice plate to the cable tray sections, reducing assembly time and improving efficiency.
Implementation Method 1
At least one snap-fit connector comprises a head and a plurality of resiliently deflectable arms extending from the head. The arms of the connector are configured to extend through aligned holes in the splice plate and one of the cable tray sections to secure the splice plate to said one of the cable tray sections.
Data Source
AI summary
A cable tray assembly includes first and second cable tray sections each including a base and rails extending transversely from longitudinal sides of the base. At least one of the base and the rails defines a plurality of holes. A splice plate is configured to engage the first and second cable tray sections for attaching the first cable tray section to the second cable tray section. The splice plate defines a plurality of holes. At least one snap-fit connector includes a head and a plurality of resiliently deflectable arms extending from the head. The arms of the connector are configured to extend through aligned holes in the splice plate and one of the cable tray sections to secure the splice plate to said one of the cable tray sections.