Support Frame Extension Legs for Cabling Trunk Interference
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Solution Overview
Problem
Existing structured cabling systems face challenges in routing cabling due to interference from support frames connected to the back of c-shaped channels, which hinder internal cabling routing and require field-cut openings in removable covers for access.
Innovation Solution
A support frame design that connects to the cabling trunk assembly, providing a mounting surface for a face plate and connector housing with snap-fit extension legs and tabs, allowing cabling to be routed through central apertures without interfering with internal cabling, and featuring offset threaded openings to prevent fastener interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a support frame is connected to the back of the c-shaped channel, then the mounting surface for face plate and connector housing is provided, but the internal routing of cabling within the channel is interfered with
Solution Approach 1:
The support frame is repositioned from the traditional back-connection location to the open face of the channel. This dimensional relocation allows the mounting surface to be provided without interfering with the internal cabling routing space, as the support frame now occupies the facial plane rather than the internal volume of the channel.
Solution Approach 2:
The support frame is divided into separate functional components: extension legs that attach to the channel exterior and a mounting surface portion that provides attachment points. This segmentation allows the mounting function to be separated from the cabling routing space, eliminating interference while maintaining structural support functionality.
2Ease of operation
If field-cut openings are made in the removable cover to allow access, then cabling access is enabled, but the structural integrity and aesthetics of the cover are compromised
Solution Approach 1:
The support frame is pre-configured with extension legs and attachment features that enable cabling access to be established during the initial installation phase. This preliminary arrangement of access pathways eliminates the need for subsequent field-cutting operations, preserving the cover's structural integrity and aesthetic appearance.
3Strength
If threaded openings are provided in the support frame, then the face plate can be secured, but fastener interference may occur
Solution Approach 1:
The threaded openings in the support frame are positioned asymmetrically relative to the channel structure and adjacent components. This asymmetric placement strategically locates the fastener pathways in spaces where they cannot intersect with other fasteners or interfere with cabling routing, while still providing adequate securing strength for the face plate.
Data Source
AI summary
A support frame (10) for a cabling trunk assembly (1) is disclosed. In one embodiment, the support frame (10) has a main body (11) defining a mounting surface (41), and a first extension leg (50) extending along a first side edge (42) of the main body (11) and away from the mounting surface (41). Similarly, the support frame (10) can be provided with a second extension leg (52) that extends along a second side edge (44) of the main body (11) and away from the mounting surface (41). The extension legs (50, 52) may be provided with tabs (54, 56) to provide a secure connection with receiving grooves (28, 29) on a channel (12) of the cabling trunk assembly (1). The extension legs (50, 52) may also be configured to provide a snap-fit connection with the receiving grooves (28, 29).