High-Pressure Cleaner Control Carrier for Precise Housing Alignment

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing high-pressure cleaners face challenges in precisely positioning multiple openings in the housing part relative to operating and control elements connected to the support frame, making it difficult to achieve accurate alignment and operation.

Innovation Solution

A high-pressure cleaner design where the second and third elements are combined into a structural unit, allowing them to be positioned relative to the switch, with a positioning device facilitating alignment through a mandrel and snap connection, enabling easy centering and fixing of these elements within defined openings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple openings are provided in the housing part for operating and control elements, then the functionality of the high-pressure cleaner is improved, but the positioning precision of these openings relative to the control elements deteriorates

Engineering Contradiction:
ImprovefunctionalityVSAvoidpositioning precision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The control elements are segmented into two groups: the switch is fixed directly to the support frame, while the second and third elements are mounted on a separate carrier that can be positioned relative to the housing part. This segmentation allows independent positioning of each group to achieve precise alignment of all openings.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A carrier is introduced as an intermediary component between the support frame and the housing part. The carrier holds the second and third control elements and can be positioned relative to the housing part using a positioning device, thereby mediating the positioning relationship between multiple openings and their corresponding control elements.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stability of the object's composition

If the housing part is fixed to the support frame, then the structural stability is improved, but the ease of positioning openings relative to control elements deteriorates

Engineering Contradiction:
Improvestructural stabilityVSAvoidease of positioning
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The assembly is segmented into three parts: the support frame with the fixed switch, the carrier with movable control elements, and the housing part. The carrier can be independently positioned relative to the housing part before final fixation, enabling easy positioning while maintaining structural stability in the assembled state.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The carrier is designed to be dynamically positionable relative to the housing part during assembly using the positioning device, allowing easy alignment of openings. Once positioned, the carrier is fixed to maintain stability during operation, thus transitioning from a dynamic positioning state to a stable operational state.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP3812052B1High pressure cleaner and method for mounting same
Publication Date: 2023.09.06 ANDREAS STIHL AG & CO KG
  • EP3812052B1 patent drawingFigure 1~2
  • EP3812052B1 patent drawingFigure 3~4
  • EP3812052B1 patent drawingFigure 5~6

AI summary

The invention relates to a high-pressure cleaner comprising a support frame (10) and a housing part (20). A switch (11) is fixedly attached to the support frame (10). The high-pressure cleaner (1) has at least two elements (12, 13), namely at least a second element (12) and a third element (13). The housing part (20) has a first opening (21) for the switch (11), a second opening (22) for the second element (12), and a third opening (23) for the third element (13). The second element (12) and the third element (13) are fixedly arranged on a common support (30). The support (30) is located between the support frame (10) and the housing part (20). The high-pressure cleaner (1) has a positioning device (40) for positioning the support (30) relative to the switch (11).