Cable Outlet Element With Oblique Inlet Surface
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Solution Overview
Problem
Existing cable outlet elements face difficulties in routing larger empty pipes and cables due to restrictive inlet surface orientations and cross-sectional areas, leading to challenges in directional changes and cable insertion, particularly in cavity wall installations.
Innovation Solution
The central longitudinal axis of the cable outlet element intersects the inlet surface, allowing for a more obtuse angle and larger cross-sectional area, enabling the insertion of empty pipes with diameters equal to or larger than the cable outlet element, and incorporating a flexible membrane for secure and noise-dampening purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the inlet surface is oriented at an oblique angle to the central longitudinal axis (prior art design), then the cable outlet element can be installed in walls, but the cross-sectional area of the inlet surface is limited and the angle for empty pipe insertion is not sufficiently obtuse
Solution Approach 1:
The patent changes the orientation parameter of the inlet surface so that its normal is perpendicular to the central longitudinal axis, making the inlet surface parallel to the axis. This parameter change increases the cross-sectional area from a limited oblique section to the full circular cross-section of the cable outlet element, while also enabling a more obtuse insertion angle for empty pipes.
2Ease of operation
If the empty pipe changes direction at a sharp angle (kink), then the installation space is utilized, but cables cannot be pulled through the empty pipe
Solution Approach 1:
The patent promotes the use of curved directional changes instead of sharp angles in empty pipe routing. By implementing gradual curves with sufficient radius of curvature, the empty pipe maintains its structural integrity and allows cables to be pulled through without damage, while still achieving the necessary directional changes within the installation space.
3Area of stationary object
If the inlet surface cross-sectional area is increased to accommodate larger empty pipes, then larger conduit sizes can be used, but the cable outlet element structure becomes more complex
Solution Approach 1:
The patent makes the cable outlet element universal by designing the inlet surface with the full circular cross-section, which can accommodate empty pipes of various diameters including those equal to or larger than the cable outlet element itself. This universal design allows the same basic structure to serve multiple functions and accommodate different pipe sizes without requiring complex variations.
Data Source
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AI summary
The present invention relates to a cable outlet element (1) for electrical installations. The cable outlet element (1) has a cylindrical shape. A first of the two base surfaces (4) of the cylinder forms a cable outlet opening. An inlet surface (2) is arranged in the region of the second of the two base surfaces (5) of the cylinder. The surface normal of this inlet surface (2) is oriented obliquely to the central longitudinal axis (3) of the cylinder such that the inlet surface (2) represents a section through the cylinder. This section extends partially through the second base surface (5). Furthermore, this section extends further through the side wall of the cylinder in the direction of the first base surface (4) such that this section exits the cylinder between the second base surface (5) and the first base surface (4). According to the present invention, the central longitudinal axis (3) of the cylinder intersects the inlet surface (2).