Rotatable Cable Clamp for Perpendicular Junction Box Wiring
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Solution Overview
Problem
Existing cable clamps for junction boxes face issues such as difficulty in perpendicular insertion and removal, high sliding friction leading to cable damage, and inflexibility in adjusting cable length, as well as easy separation of cables during connection and reconnection processes.
Innovation Solution
A cable clamp design featuring a cable threading framework with a rotatable fastening plate and clamping mechanism, allowing for easy cable insertion and adjustment, with a knock-out structure that compresses the cable for secure fixation, enabling perpendicular threading and flexible cable management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lateral insertion cable clamp is used, then cable fixation is achieved, but cable insertion and removal becomes difficult
Solution Approach 1:
The cable clamp adopts a dynamic clamping mechanism where the clamping arm can rotate around a rotation axis. The spring provides continuous elastic force to maintain clamping pressure, allowing the clamp to adapt dynamically to different cable diameters while maintaining secure fixation. This dynamic structure enables easy insertion and removal of cables without requiring lateral insertion forces.
Solution Approach 2:
The cable clamp is divided into separate functional components: a stationary body, a rotatable clamping arm, and an independent spring mechanism. This segmentation allows the clamping arm to rotate independently for cable insertion while the spring maintains constant clamping force, resolving the contradiction between secure fixation and easy operation.
2Reliability
If lateral or irreversible insertion manner is adopted, then cable fixation is achieved, but cable may undergo great sliding friction and be damaged
Solution Approach 1:
The invention replaces the traditional lateral insertion mechanical system with a rotational clamping mechanism. Instead of forcing the cable through lateral insertion that creates sliding friction, the spring-loaded clamping arm rotates into position and applies perpendicular clamping force, eliminating the harmful sliding friction while maintaining secure cable fixation.
3Device complexity
If lateral insertion manner is used, then cable clamp structure is simple, but cable is easily separated during connection and reconnection
Solution Approach 1:
The spring mechanism provides self-service by automatically maintaining clamping force on the cable. As the cable is inserted or reconnected, the spring continuously applies elastic force to keep the clamping arm engaged, preventing cable separation without requiring complex additional locking mechanisms. The system self-adjusts to maintain reliable cable retention.
4Reliability
If check valve structure is used, then cable cannot be pulled out after insertion, but cable adjustment and fine-tuning becomes inconvenient
Solution Approach 1:
The spring-loaded clamping mechanism provides dynamic adjustment capability. The spring allows the clamping arm to move slightly as the cable is adjusted, maintaining continuous contact and clamping force throughout the adjustment process. This enables convenient cable length adjustment and repositioning while still preventing cable pull-out, unlike rigid check valve structures.
Data Source
AI summary
The present disclosure relates to the technical field of cable fixing, in particular, to a cable clamp applied to a junction box of lighting fixture, and a junction box of lighting fixture thereof. The cable clamp includes a cable threading framework for fixing and a fastening plate mounted on the cable threading framework, wherein the fastening plate is provided with a rotating shaft part and a flip part integrally formed with the rotating shaft part; and the fastening plate is rotatably connected to the cable threading framework through the rotating shaft part. A cable can be perpendicularly threaded into the junction box through the cable clamp.