High pressure cleaner and method for mounting same

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing high-pressure cleaners face challenges in arranging the operating element and actuating element in an offset configuration, which complicates the actuation of components like pumps that are vibrating relative to the housing.

Innovation Solution

The solution involves connecting the operating element and actuating element in a rotationally fixed manner via at least one universal joint, allowing for an offset arrangement and enabling movement of the actuating element relative to the operating element while maintaining actuation capability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the operating element and actuating element are arranged coaxially, then the actuation mechanism is simple, but the design flexibility and adaptability to vibrating components is limited

Engineering Contradiction:
Improvedesign flexibilityVSAvoidactuation mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

A universal joint is introduced as an intermediary component between the operating element and actuating element. This universal joint serves as a mediator that transmits rotational motion while accommodating angular misalignment, thereby enabling offset arrangement of the elements without compromising actuation functionality.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The universal joint introduces dynamic adaptability to the system by allowing the actuating element to move relative to the operating element in the direction of the actuating rotation axis. This dynamic capability enables the system to bridge different distances and accommodate vibrations while maintaining reliable actuation.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the actuating element is attached to a vibrating component, then the design accommodates real-world operating conditions, but the connection stability and actuation reliability deteriorate

Engineering Contradiction:
Improvevibration accommodationVSAvoidactuation reliability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The universal joint enables dynamic movement of the actuating element relative to the operating element, allowing the system to accommodate vibrations from the pump component. The actuating element can move in the direction of the actuating rotation axis while maintaining functional connection, ensuring reliable actuation despite vibrational disturbances.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The universal joint acts as a vibration-isolating intermediary between the vibrating pump component and the operating element. It absorbs and accommodates vibrational movements while maintaining the actuation connection, thereby preserving actuation reliability in vibrating environments.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Adaptability or versatility

If two universal joints are used to connect the operating element and actuating element, then the positioning flexibility is improved, but the device complexity increases

Engineering Contradiction:
Improvepositioning flexibilityVSAvoidjoint configuration complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The first universal joint allows movement of the connecting piece relative to the operating element, while the second universal joint allows movement of the actuating element relative to the connecting piece. This dual-joint configuration provides enhanced dynamic positioning flexibility, enabling the system to accommodate complex relative movements and vibrations while maintaining actuation functionality.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3812053B1High pressure cleaner and method for mounting same
Publication Date: 2025.06.11 ANDREAS STIHL AG & CO KG
  • EP3812053B1 patent drawingFigure 1~2
  • EP3812053B1 patent drawingFigure 3~4
  • EP3812053B1 patent drawingFigure 5~6

AI summary

The invention relates to a high-pressure cleaner with a control element (10) rotatably arranged on a housing (2) of the high-pressure cleaner (1) for operating an actuating element (20) rotatable about an actuating axis (50). The control element (10) and the actuating element (20) are connected to each other in a rotationally fixed manner via at least one universal joint (3, 4).