Wall Bracket Nut Locking for Secure Threaded Rod Adjustment

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Solution Overview

Problem

Existing wall mounts tend to become loose over time, and while lock nuts can secure them, they complicate the installation process and are often forgotten, leading to ineffective rotation prevention.

Innovation Solution

A wall mount design featuring an anchor element with a fastening section, a receiving section with a threaded rod, a nut element with an internal thread, and a securing element that moves the nut element radially to clamp the threaded rod, preventing rotation by engaging the external thread, allowing for coarse and fine adjustments while ensuring secure fixation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a lock nut is used to secure the threaded rod, then rotational safety is improved, but device complexity and ease of operation deteriorate due to complicated delivery scope and forgotten locking actions

Engineering Contradiction:
Improverotational safetyVSAvoiddelivery scope complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the locking function and the counter element function into a single integrated nut element. The nut element has an internal thread that engages with the threaded rod and also features a locking mechanism that secures the threaded rod in place. This eliminates the need for separate lock nuts and counter elements, reducing delivery scope complexity while maintaining rotational safety.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The nut element is designed to automatically perform both the positioning and locking functions. When the threaded rod is inserted and rotated, the nut element self-secures to the threaded rod through its internal thread and simultaneously activates the locking mechanism. This self-service design eliminates the need for separate locking actions by the installer, preventing forgotten locking while maintaining rotational safety.

Inventive Principle:
Principle #25Self-service

2Reliability

If a separate lock nut is provided, then rotational safety is improved, but ease of operation worsens due to complicated installation steps

Engineering Contradiction:
Improverotational safetyVSAvoidinstallation simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent merges the lock nut functionality into the nut element itself. The nut element includes both the threading mechanism for securing to the threaded rod and the locking mechanism in one integrated component. This eliminates the need for separate lock nuts and reduces installation steps to a single securement action, improving ease of operation while maintaining rotational safety.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The nut element automatically performs the locking function when installed. As the threaded rod is rotated into position, the nut element self-secures and simultaneously activates its locking mechanism without requiring additional locking actions. This self-service approach simplifies installation to basic threading while ensuring rotational safety is maintained.

Inventive Principle:
Principle #25Self-service

3Reliability

If the nut element is moved radially to clamp the threaded rod, then rotational safety is improved, but device complexity worsens due to additional movement mechanisms

Engineering Contradiction:
Improverotation preventionVSAvoidmechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the clamping function and the positioning function into the same nut element structure. The nut element has an internal thread that engages with the threaded rod and simultaneously features a locking mechanism that clamps the threaded rod radially. This integration eliminates the need for separate clamping mechanisms while achieving rotation prevention.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The nut element automatically clamps the threaded rod radially when installed. The locking mechanism is activated by the same rotational motion used to secure the nut element to the threaded rod. This self-service clamping action achieves rotation prevention without requiring additional complex movement mechanisms or separate locking steps.

Inventive Principle:
Principle #25Self-service

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 design provides a user-friendly installation process with clear steps, eliminates the need for separate counter elements, and securely fixes the threaded rod, preventing rotation and play, thus addressing the issue of loose wall mounts.

Implementation Method 1

The locking element presses the nut radially against the threaded rod, clamping it to the receiving section. This clamps the threaded rod, preventing it from being twisted by normal force.

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

The locking element presses the nut radially against the threaded rod, clamping it to the receiving section.

Methodology Applied
Scientific EffectMechanical Force: Mechanical Force

Implementation Method 3

In the fine adjustment position, the installer can then position the threaded rod with millimeter accuracy. by turning the threaded rod, the threaded rod receives a feed in the direction of the central axis

Methodology Applied
Scientific EffectScrew mechanism: Screw

Implementation Method 4

The spring arms exert a spring force on the nut element

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP3926185B1Wall support
Publication Date: 2023.06.07 GEBERIT INT AG
  • EP3926185B1 patent drawingFigure 1
  • EP3926185B1 patent drawingFigure 2a~2d
  • EP3926185B1 patent drawingFigure 3a~3d

AI summary

A wall bracket (1) comprises an anchor element (2) with a fastening section (3) for fastening the anchor element (2) to a building and with a receiving section (4) adjoining the fastening section (3) and extending along a central axis (M) with a receiving opening (5) extending along the central axis (M), a threaded rod (6) movably mounted in the receiving opening (5) with an external thread (7), a nut element (8) with an internal thread (9) which is interrupted circumferentially by a threadless passage (10), and a locking element (11) for securing the nut element (8), wherein the receiving section (4) has an external thread (12) on which the nut element (8) with the internal thread (9) is pivotably mounted, wherein the nut element (8) is movable from a coarse adjustment position (G) via a fine adjustment position (F) to a clamping position (K),wherein in the coarse adjustment position (G) the nut element (8) is positioned such that the external thread (7) of the threaded rod (6) lies in the passage (10), so that the threaded rod (6) is displaceable in the receiving opening (5) in the direction of the central axis (M); and wherein in the fine adjustment position (F) the nut element (8) is positioned such that the external thread (7) of the threaded rod (6) is in engagement with the internal thread (9) of the nut element (8), such that by rotating the threaded rod (6) the threaded rod (6) is advanced in the direction of the central axis (M); and wherein from the fine adjustment position (F) the nut element (8) is moved radially to the threaded rod (6) into the clamping position (K) by the locking element (11) with the internal thread (9), such that rotation of the threaded rod (6) is prevented.