Anchor Rail T-Head Bolt Locking Plate for Stable Installation

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Solution Overview

Problem

Existing fastening devices for anchor rails face difficulties in secure assembly and retention of hammerhead screws, particularly when elastic strips are removed, leading to instability and increased assembly complexity.

Innovation Solution

A fastening device comprising a hammerhead screw with a retaining plate and locking webs that lock onto the threaded bolt, forming a secure unit with the anchor rail, allowing for easier and more stable mounting by engaging teeth and utilizing a flexible locking element to prevent the unit from falling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a hammer-head bolt with a toothed part is used for mounting on an anchor rail, then the bolt can engage with the anchor rail, but the bolt may sink into and fall out of the anchor rail when elastic strips are removed, complicating installation

Engineering Contradiction:
Improveretention of hammer-head bolt on anchor railVSAvoidinstallation process
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent combines the hammer-head bolt and retaining plate into a single integrated unit where the retaining plate is fixed to the hammer-head bolt. This merging ensures that the retaining plate cannot detach from the bolt during installation, preventing the bolt from sinking out and eliminating the complexity of separate component assembly while maintaining reliable retention on the anchor rail

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The retaining plate with locking webs is pre-assembled onto the hammer-head bolt before installation. The locking webs are positioned in advance to engage with the threads of the bolt, creating a pre-fixed unit that prevents sinking and detachment during the installation process, thereby simplifying the overall installation procedure

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If the retaining plate is made thinner to allow flexibility of locking webs, then the locking element becomes more flexible, but the retaining plate's ability to transmit forces from the anchor rail is reduced

Engineering Contradiction:
Improveflexibility of locking websVSAvoidforce transmission capability
Core Design Contradiction:
Adaptability or versatilityVSStrength

Solution Approach 1:

The patent applies local quality by making the locking webs thin and flexible only in the specific region where they engage with the bolt threads, while the main body of the retaining plate remains sufficiently thick to transmit forces from the anchor rail. This localized differentiation allows the locking webs to be resilient and flexible for easy locking, while the thicker plate structure maintains the necessary strength for force transmission

Inventive Principle:
Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution ensures reliable and efficient assembly of the hammerhead screw on the anchor rail, preventing it from sinking or falling, and allows for easy alignment in various orientations, providing a secure and stable fixation.

Implementation Method 1

The locking web utilizes the profile of the threaded bolt through the formation of the individual threads to create a locking connection between the retaining plate and the hammer-head bolt

Methodology Applied
Scientific EffectThreaded engagement: Screw

Implementation Method 2

a strip made of an elastic foam material can be arranged in the anchor rail so that the head of the hammer-head bolt is pressed against the inwardly projecting webs on the anchor rail

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4100586B1Securing device, installation unit, and method for installing a t-head bolt on an anchor rail
Publication Date: 2024.05.01 WILHELM MODERSOHN GMBH & CO KG
  • EP4100586B1 patent drawingFigure 1A~1B
  • EP4100586B1 patent drawingFigure 1C
  • EP4100586B1 patent drawingFigure 2A~2B

AI summary

The invention relates to a securing device for an anchor rail (1), comprising a T-head bolt (10), a holding plate (20) which is fixed to the T-head bolt (10), multiple teeth (27) for engaging with a toothing (5) on the anchor rail (1), and an opening (21), through which a threaded bolt (12) of the T-head bolt is guided, wherein the holding plate (20) is equipped with at least one locking web (25) which protrudes into the opening (21) of the holding plate (20) and by means of which the holding plate (20) can be locked onto the threaded bolt (12) of the T-head bolt (10). The invention additionally relates to an installation unit with an anchor rail and a securing device and to a method for installing a T-head bolt (10) on an anchor rail (1).