Pivotable Cable Holder for Rail Mounting

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Solution Overview

Problem

Existing cable fastening devices are inflexible and require complex adjustments when cable routes change, especially in curved sections or varying tunnel heights, necessitating rigid substructures that are difficult to adapt.

Innovation Solution

A device featuring a pivotable intermediate piece with a cable clamp part and rail part, allowing for adjustable fastening via cable clamp bolts and rail bolts, enabling horizontal and vertical adjustments through eccentric pivot axes and slotted holes for enhanced flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If rigid substructures are used for cable fastening, then structural stability is improved, but adaptability to cable route changes deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidadaptability to cable route changes
Core Design Contradiction:
Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The intermediate piece is designed with a pivot joint that allows it to rotate between a transport position (parallel to mounting rail) and a working position (perpendicular to mounting rail). This dynamic capability enables the rigid structure to adapt to different cable routing scenarios while maintaining structural stability during each operational state.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The fastening device is divided into distinct functional segments: the mounting rail, the pivotable intermediate piece, and the cable clamp. This segmentation allows the intermediate piece to independently rotate and adjust, providing adaptability without compromising the stability of the overall structure.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If adjustment elements are added to adapt substructure to cable route changes, then adaptability is improved, but device complexity increases

Engineering Contradiction:
Improveadaptability to cable route changesVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Instead of adding multiple complex adjustment mechanisms, the invention uses a single pivot joint that provides rotational adjustment capability. This simple dynamic element allows the intermediate piece to orient itself appropriately for different cable routes without increasing overall device complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

Rather than attempting to bend or flex the rigid mounting rail to accommodate cable route changes, the invention inverts the approach by keeping the rail fixed and rotating the intermediate piece to achieve the necessary adaptation.

Inventive Principle:
Principle #13The other way round (Inversion)

3Reliability

If multiple fastening points are used to secure the intermediate piece, then reliability is improved, but ease of operation deteriorates

Engineering Contradiction:
Improvefastening reliabilityVSAvoidease of adjustment
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The pivot joint incorporates a detachable connection mechanism that allows the intermediate piece to be easily released and repositioned. When fastened, multiple connection points ensure reliability; when adjusted, the detachable nature enables easy operation by allowing the intermediate piece to be temporarily disengaged and re-engaged at different positions.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3406952B1Pivotable cable holder
Publication Date: 2019.11.06 HILTI AG
  • EP3406952B1 patent drawingFigure 1~2
  • EP3406952B1 patent drawingFigure 3~4

AI summary

The invention relates to a device for attaching a cable to a mounting rail (4) with a cable clamp (2) for the cable, an intermediate piece (1), a first cable clamp bolt (11) and a second cable clamp bolt (12) with which the cable clamp (2) is fixed to the intermediate piece (1), and a first rail bolt (15) with which the intermediate piece (1) can be fixed to the mounting rail (4). According to the invention, the intermediate piece (1) has a rail part (40) and a cable clamp part (20), which is pivotably mounted on the rail part (40) about a pivot axis (99), the cable clamp (2) is fixed to the cable clamp part (20) of the intermediate piece (1) by means of the first cable clamp bolt (11) and the second cable clamp bolt (12), and the intermediate piece (1) can be fixed to the mounting rail (4) by means of the first rail bolt (15).