Protective End Caps for Busbar Lighting Rail Insulation
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Solution Overview
Problem
Existing systems for creating elongated luminaires face challenges in ensuring modular, flexible, and secure connections of conductor wires while maintaining effective insulation and protection against dust ingress, often requiring complex designs that complicate the connection process.
Innovation Solution
A system with longitudinally elongated mounting and conductor rails, featuring protective caps at both ends that utilize retaining contours for secure attachment, ensuring insulation and protection of conductor wires, and allowing easy connection through asymmetrical plug-in faces and channel sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If protective caps are attached to longitudinal ends of mounting and conductor rails, then protection against dust ingress and insulation of conductor wires is improved, but device complexity increases due to additional components and attachment mechanisms
Solution Approach 1:
The patent combines the protective cap for the mounting rail and the protective cap for the conductor rail into a single integrated component. This merged protective cap simultaneously protects both the mounting rail and conductor rail at the longitudinal ends, reducing the total number of separate components while maintaining protection against dust ingress and electrical insulation.
Solution Approach 2:
The integrated protective cap serves multiple functions: it protects the mounting rail from dust ingress, protects the conductor rail from dust ingress, provides electrical insulation for the conductor wires, and includes asymmetrical plug-in faces for secure attachment. This multi-functionality reduces the need for separate specialized components.
2Reliability
If retaining contours are used for secure attachment of protective caps, then reliability of connection is improved, but ease of manufacture deteriorates due to more complex forming processes
Solution Approach 1:
The retaining contours are pre-formed during the extrusion or injection molding process of the protective cap manufacturing. The asymmetrical plug-in faces and retaining contour features are integrated into the mold design, allowing these complex geometric features to be created in a single forming operation rather than requiring subsequent machining or assembly steps.
3Ease of operation
If asymmetrical plug-in faces are provided for easy connection, then ease of operation is improved, but manufacturing precision requirements increase to ensure proper orientation
Solution Approach 1:
The protective cap is designed with asymmetrical plug-in faces that have different geometries on opposite sides. This asymmetry provides inherent orientation guidance during assembly, allowing the protective cap to be attached only in the correct rotational position. The asymmetrical design simplifies the connection operation by preventing incorrect installation while maintaining reasonable manufacturing tolerances.
4Ease of operation
If channels are continuously open along longitudinal extent for accessibility, then ease of operation is improved, but protection against harmful factors deteriorates due to potential dust ingress
Solution Approach 1:
The protective cap is segmented into different functional zones: regions with open channels for conductor wire accessibility and regions that close off the receiving space at the longitudinal ends. This segmentation allows simultaneous achievement of wire accessibility where needed and dust protection where required, with the protective cap providing sealing at the ends while maintaining open channels along the conductor rail length.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 3a~3b
AI summary
The invention relates to a system for implementing a lighting device which is elongated in the longitudinal direction X, said system comprising at least one support rail (1) which is elongated in the longitudinal direction X and a busbar (4) that is elongated in the longitudinal direction X and has channels (30) which run in the longitudinal direction X and in each of which at least one line wire (5) is arranged. The support rail (1) has a support rail base (11) and two support rail lateral walls (12) which extend away from the support rail base (11) in a vertical direction Z and are mutually spaced by the support rail base (11) in a transversal direction Y, wherein the support rail base (11) and the support rail lateral walls (12) form a wall which delimits a receiving area, which is open at both longitudinal ends of the support rail (1), for receiving the busbar, and the busbar is arranged in the receiving area and is secured to the support rail (1) in an installed state. The system has a support rail protective cap (2) which can be plugged onto each longitudinal end of the support rail (1) at the longitudinal ends in order to close the receiving area and/or a busbar protective cap (3) which can be plugged onto each longitudinal end of the busbar (4) in order to insulate the line wires (5).