Spring-Expanded Wall Holder for Secure Sanitary Object Mounting

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Solution Overview

Problem

Existing wall holders for wall-hung sanitary objects, such as toilet bowls, are difficult to manufacture and assemble stably and resiliently using standard tools, often requiring complex procedures and tools for secure attachment.

Innovation Solution

A wall holder design featuring a housing with a clamping device that expands via spring force, utilizing two clamping elements and an actuating element to securely fasten a threaded rod anchored in the wall, allowing for easy assembly and detachment using standard tools like a hexagonal wrench, with a snap-lock mechanism for secure attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a complex clamping mechanism is used to ensure stable and resilient fixation, then the reliability of wall holder fixation is improved, but the ease of manufacture and assembly deteriorates

Engineering Contradiction:
Improvefixation stabilityVSAvoidassembly difficulty
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The wall holder is divided into distinct functional modules: a housing component, a clamping device with expandable clamping elements, and an actuating mechanism. This segmentation allows each component to be manufactured independently using standard processes and then assembled together, reducing overall manufacturing complexity while maintaining reliable fixation through the specialized clamping mechanism.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The clamping device is designed to be inserted into the housing cavity in a compressed state and then expand within the housing. The actuating element is nested within the housing and acts on the clamping device through the cavity. This nested arrangement consolidates multiple components into a compact structure that achieves reliable fixation without requiring complex external mounting mechanisms.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If a complex assembly procedure is used to achieve secure attachment, then the reliability of wall holder fixation is improved, but the productivity of installation deteriorates

Engineering Contradiction:
Improveattachment securityVSAvoidinstallation speed
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The clamping device automatically expands upon insertion into the housing cavity, securing itself without requiring manual adjustment or additional fastening steps. The actuating element automatically transfers force to the clamping device when actuated, creating a self-contained installation process that achieves secure attachment quickly with minimal installer intervention.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The manual operation of tightening and securing the wall holder is replaced by a mechanical actuation system. The actuating element converts rotational or linear motion into controlled expansion of the clamping elements, providing consistent and reliable attachment security while significantly reducing installation time compared to traditional manual assembly methods.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If specialized tools are used to achieve robust fixation, then the reliability of wall holder fixation is improved, but the ease of operation deteriorates

Engineering Contradiction:
Improvefixation robustnessVSAvoidtool requirement
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The actuating element is designed to be operated with common, readily available tools such as hex keys or Allen wrenches, which are universally found in most toolkits. This universal compatibility allows installers to achieve robust fixation without requiring specialized or proprietary tools, thereby maintaining ease of operation while ensuring reliable and secure attachment of the wall holder.

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

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 provides a reliable and resilient wall holder that can be easily assembled and detached, ensuring stable fixation of wall-hung objects without requiring manual holding during installation, using standard tools for secure and force-fitting attachment.

Implementation Method 1

a clamping device having two clamping elements that can be expanded by spring force

Methodology Applied
Scientific EffectSpring force: Spring

Implementation Method 2

the threaded section is positively locked against being pulled out and frictionally locked against being unscrewed by the threaded bore enclosed by the clamping elements

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP4001527B1Wall holder, in particular for a sanitary object
Publication Date: 2023.10.11 NEXTREND GMBH
  • EP4001527B1 patent drawingFigure 1~2
  • EP4001527B1 patent drawingFigure 3~4
  • EP4001527B1 patent drawingFigure 5~7

AI summary

A wall bracket (2) for a wall-hung object, in particular a toilet bowl, wherein the wall bracket (2) comprises: - a housing (4) enclosing a cavity (8), - a clamping device (12) having two clamping elements (30, 32) that can be expanded by spring force, and - an actuating element (20) acting on the clamping device (12), wherein the clamping device (12) can be inserted into the cavity (8) in a compressed state along an insertion direction (22) through an insertion opening (10) and expands therein as a result of the spring force when the actuating element (20) is released, such that movement out of the cavity (8) is blocked, and wherein the clamping device (12) inserted into the cavity (8) can be compressed by the actuating element (20) such that a fastening rod (84) anchored at one fixed end in a wall and projecting at one free end into the cavity (8) is held in place by force and/or positive locking between the clamping elements (30,32) is fixed.,