Surface-Mounted Electrical Installation with Tooth Profile Locking
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Solution Overview
Problem
Existing surface-mounted electrical installations lack effective protection for power cables, which can be mechanically damaged during installation, especially when routing them through openings in electrical components, and struggle with secure attachment to uneven or unplastered surfaces.
Innovation Solution
A surface-mounted electrical installation system featuring a support piece with tooth profiles for secure attachment to walls or ceilings, combined with a locking piece that provides multiple engagement positions and a pipe connection for improved cable protection, allowing for easy assembly and secure fastening of electrical components like switches, sockets, and lamps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rectangular mounting bracket with four corner screws is used, then the electrical component can be firmly attached to the wall, but four holes are required which complicates installation on unplastered or uneven surfaces
Solution Approach 1:
The mounting system is divided into separate functional elements: a support piece for wall attachment, a locking piece for component mounting, and a pipe connection for cable protection. This segmentation allows each element to be optimized independently and simplifies installation on difficult surfaces.
Solution Approach 2:
The support piece acts as an intermediary between the wall and the electrical component, providing a mounting base that can be attached with minimal holes while accommodating uneven surfaces through its geometric design.
2Ease of operation
If power cables are routed through openings in the electrical component housing, then electrical connection is achieved, but the cables lack mechanical protection and can be easily damaged
Solution Approach 1:
The pipe connection integrates a protective tube structure that receives and protects the power cables as they enter the electrical component. The cable routing path is nested within the protected tube rather than exposed through simple openings.
Solution Approach 2:
The pipe connection provides pre-installed mechanical protection for the cables before they are routed to the component, preventing damage during installation and use rather than adding protection after the fact.
3Productivity
If a pre-assembled fastening system is used, then installation time is reduced, but the system must accommodate various surface conditions including holes and unevenness
Solution Approach 1:
The support piece is designed with universal geometric features (flat bearing surface, circumferential tooth profile) that enable it to function on multiple surface types including plastered walls, unplastered surfaces with holes, and uneven surfaces, all with the same installation procedure.
Solution Approach 2:
The support piece and locking piece are pre-assembled with integrated tooth profiles that engage to create a rigid connection, allowing the entire fastening system to be installed as a single unit without on-site assembly adjustments.
Data Source
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AI summary
The invention relates to a surface-mounted electrical installation comprising a mounting piece for attachment to a plastered or unplastered wall or ceiling surface by means of a screw, a locking piece for connecting to the mounting piece, and at least one electrical component designed as a switch, socket, fire alarm, motion detector, or lamp. The mounting piece has 1) a bearing surface for the support of a screw head, wherein the bearing surface is arranged in the mounting piece and is oriented in a direction opposite to a first end face of the mounting piece, 2) a first tooth profile extending parallel to a longitudinal axis of the mounting piece, and 3) a second tooth profile extending perpendicular to the longitudinal axis, which in particular extends circumferentially around the bearing surface.The locking element comprises 1) a third tooth profile, designed as complementary to the first tooth profile, such that when the locking element is placed onto the support piece, the first tooth profile engages with the third tooth profile in a positive-locking connection with respect to a direction parallel to the longitudinal axis, and 2) a fourth tooth profile, designed as complementary to the second tooth profile, such that when the locking element is placed onto the support piece, the second tooth profile engages with the fourth tooth profile in a positive-locking connection with respect to a direction of rotation about the longitudinal axis. The electrical component is arranged on the locking element or incorporates the locking element, particularly pre-assembled, as an integral component.The first and third tooth profiles are designed together such that several possible locking positions are provided between the first and third tooth profiles, in particular wherein the first and/or the third tooth profile has at least two teeth in the longitudinal direction.