DIN Modular Grounding Assembly for Secure Damage-Free Connection

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Solution Overview

Problem

Existing grounding devices for DIN modular components, such as fuse holders, are not universally applicable and can damage the components during installation, lacking a secure and efficient connection mechanism.

Innovation Solution

A grounding device with adjustable connecting means, gripping means, and a slip clutch mechanism that ensures a secure and damage-free connection to various DIN modular components, utilizing a hook for mechanical coupling and a pressure pin for contact with connecting screws.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing grounding devices are used for DIN modular components, then grounding function is achieved, but the devices are not universally applicable and can damage the components during installation

Engineering Contradiction:
Improveuniversal applicabilityVSAvoiddamage to components
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The grounding device is designed with a universal mounting mechanism that can be attached to various DIN modular components (fuse holders, circuit breakers, switches) without component-specific modifications. The device features a flexible cable with a mounting element that can grip onto different component types, and a contact element that can engage with various screw head configurations (Phillips, flathead, hex), making it universally applicable across multiple component types while preventing damage through controlled engagement forces.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The contact element is designed with adjustable positioning capabilities, allowing the mounting distance between the gripping means and the contact element to be modified. This parameter adjustment enables the device to adapt to different component geometries and screw positions, ensuring proper contact force and alignment without damaging the component. The flexible cable also allows positional adjustments to accommodate various mounting locations.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If existing grounding devices are used for DIN modular components, then grounding connection is established, but the connection mechanism lacks security and efficiency

Engineering Contradiction:
Improvesecure connectionVSAvoidinstallation efficiency
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The grounding device incorporates a flexible cable that provides dynamic adjustment capabilities, allowing the cable to bend and position itself to reach the connecting screw on various DIN modular components. This flexibility ensures reliable electrical contact while simplifying installation, as the cable can adapt to different component positions and orientations without requiring precise pre-positioning or complex alignment procedures.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The contact element serves as an intermediary between the grounding cable and the connecting screw, providing a controlled interface that ensures secure electrical connection. The contact element is designed to engage with the screw head in a manner that distributes contact forces evenly, preventing damage while ensuring reliable electrical continuity. This intermediary mechanism simplifies the connection process by providing a standardized interface that works with various screw types.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP4287408B1Grounding device for grounding a din modular component in a position of use and assembly of a grounding device and a din modular component
Publication Date: 2026.03.18 ALFEN NV
  • EP4287408B1 patent drawingFigure 1
  • EP4287408B1 patent drawingFigure 2
  • EP4287408B1 patent drawingFigure 3~4

AI summary

The invention relates to a grounding device (1) for a DIN modular component (100). The grounding device comprises connecting means (2) for establishing an electrical connection to the DIN modular component with a connecting screw. The grounding device further comprises a grounding cable (3) for connection to grounding equipment and the connecting means are electrically connected to the grounding cable. The grounding device (1) also comprises gripping means on the underside of the DIN modular component and/or on the DIN rail for gripping onto the electrical cable.