Liquid Reservoir Pump Mounting Features

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Solution Overview

Problem

Existing liquid reservoir designs often result in pumps tipping over or not being able to discharge all stored liquid, leading to inefficiencies and potential damage, with complex and high-maintenance mounting arrangements that are not user-friendly.

Innovation Solution

A water reservoir with integrated mounting features, such as recessed cavities and shoulders, allows for secure, removable, and tool-less mounting of the pump, preventing tipping and ensuring efficient operation while maintaining aesthetics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the pump is disposed outside the liquid reservoir or loosely positioned within it, then the pump can be easily installed and removed, but the pump tips over or floats above the base, preventing complete liquid discharge and potentially damaging the reservoir

Engineering Contradiction:
Improveease of pump installation and removalVSAvoidpump stability and complete liquid discharge capability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The pump is nested within a recessed cavity formed in the base of the liquid reservoir. The cavity receives the pump such that the pump sits substantially flush with the base surface, preventing tipping while allowing easy installation and removal. The recessed cavity acts as a protective housing that secures the pump in its operational position.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

Mounting features including tabs and slots are introduced as intermediary elements between the pump and the reservoir base. The tabs on the pump engage with the slots in the base to provide secure positioning, while still allowing straightforward installation and removal without complex fastening mechanisms.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If complex mounting arrangements are provided to support the pump within the liquid reservoir, then the pump stability is improved, but the device complexity increases and maintenance becomes more difficult

Engineering Contradiction:
Improvepump stability within reservoirVSAvoidcomplexity of mounting arrangement
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The mounting features are merged into the base structure itself. The tabs are formed as integral parts of the pump housing, and the slots are formed directly in the base during molding. This integration eliminates the need for separate mounting brackets, screws, or fastening mechanisms, thereby reducing device complexity while maintaining pump stability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The pump is nested within a recessed cavity that is formed as an integral part of the base. This recessed structure provides inherent support and positioning for the pump without requiring additional mounting components. The cavity walls and base structure work together to secure the pump in place.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Ease of manufacture

If the pump is loosely positioned within the liquid reservoir without proper mounting features, then the installation is simple, but the pump may fall or tip over, causing damage and requiring frequent maintenance

Engineering Contradiction:
Improvesimplicity of pump installationVSAvoiddamage to reservoir from pump tipping
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The recessed cavity in the base provides a protective housing that prevents the pump from tipping over or falling. The cavity walls contain the pump within a defined space, eliminating the harmful effect of pump tipping while maintaining easy installation through the open top of the cavity.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The tabs and slots act as intermediary elements that prevent direct contact between the pump and the surrounding liquid, which could cause the pump to float or tip. The mounting features provide stable mechanical engagement that protects the reservoir from damage while allowing simple pump installation and removal.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP4039981B1Liquid reservoir
Publication Date: 2024.08.21 HUSQVARNA AB
  • EP4039981B1 patent drawingFigure 1
  • EP4039981B1 patent drawingFigure 2
  • EP4039981B1 patent drawingFigure 3

AI summary

A liquid reservoir (100) includes a body (102) defining a base (104) and a plurality of sides (106). The plurality of sides (106) and the base (104) define a volume (116) to store the liquid (101) therein. The liquid reservoir (100) also includes a pump (122) operatively mounted within the liquid reservoir (100). The liquid reservoir (100) is characterized in that the body (102) includes one or more mounting features (138), (140), (338) such that the one or more mounting features (138), (140), (338) allow removable mounting of the pump (122) towards the base (104) of the liquid reservoir (100).