Electrical Box Rod Clamp to Prevent Rotation and Sliding
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Solution Overview
Problem
Current methods for connecting electrical boxes to ceiling support rods using friction retainers fail to prevent rotation and sliding, leading to instability and the need for repeated installations due to inadequate fixation.
Innovation Solution
A two-part fitting system comprising a first part with an elongated vertical cavity and male threaded posts, and a second part with a male threaded screw and U-shaped structure, which securely encloses the support rod, preventing rotation and sliding by engaging the support rod with threaded nuts through the electrical box holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a friction retainer is used to attach the electrical box to the support rod, then the installation process is simple, but the electrical box rotates and slides due to inadequate prevention of rotation and sliding
Solution Approach 1:
The fitting is divided into two separate parts: a first part that attaches to the electrical box and a second part that attaches to the support rod. This segmentation allows each part to be optimized for its specific function while maintaining overall simplicity of installation.
Solution Approach 2:
The two-part fitting acts as an intermediary device between the electrical box and the support rod. It provides a reliable mechanical connection that prevents both rotation and sliding, solving the instability problem while keeping the installation process straightforward.
2Device complexity
If a friction retainer is used to attach the electrical box to the support rod, then the device structure is simple, but the installation is unstable requiring repeated reinstallation
Solution Approach 1:
The attachment system is segmented into two functional parts with distinct roles, reducing the complexity of each individual component while achieving superior overall stability compared to a single friction retainer design.
Solution Approach 2:
The solution addresses the instability problem by adding dimensional constraints through the two-part structure, which provides both rotational and translational restraint, thereby preventing the electrical box from rotating or sliding on the support rod.
3Quantity of substance
If heavy cables are connected to the electrical box, then the electrical functionality is adequate, but the friction retainer fails to prevent rotation toward the heaviest cables
Solution Approach 1:
The two-part fitting creates a balanced mechanical connection that counteracts the rotational force exerted by heavy cables. The rigid attachment prevents the electrical box from rotating toward the heaviest cables, maintaining stable orientation regardless of cable weight distribution.
Solution Approach 2:
The fitting design incorporates geometric features that provide omnidirectional restraint, preventing rotation in any direction caused by heavy cables, thereby maintaining electrical box stability under various loading conditions.
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
The two-part fitting system effectively secures electrical boxes to ceiling support rods, preventing rotation and sliding, ensuring stable installations that remain in place without the need for reinstallation, thus providing a sturdy and reliable method for electrical box attachment.
Implementation Method 1
a male threaded screw engaged in a female threaded hole through a portion of the second part
Implementation Method 2
threaded nuts through the two holes spaced apart on a surface of the electrical box
Data Source
AI summary
A two-part fitting has a first part with an elongated vertical cavity open on a first side, the cavity of a depth and width to accommodate a vertical support rod, with two male threaded posts extending horizontally on a second side of the first part opposite the first side, and a second part having a male threaded screw engaged in a female threaded hole through a portion of the second part. The fitting is characterized in that the first and second parts are adapted to join together enclosing the vertical support rod in a manner that the male threaded screw of the second part impinges on the vertical support rod.