Vacuum cleaner nozzle provided with a deformable rear Anti-tilting stop

Solution Overview

Problem

Vacuum cleaner nozzles with rear anti-tilt stops generate noise pollution and risk scratching fragile floors when used on hard floors due to friction, especially when waste adheres to the stop.

Innovation Solution

A deformable rear anti-tilt stop with bristles positioned at least partly behind the transverse pivot axis reduces noise and friction, preventing rigid contact with the floor and enhancing stability while maintaining effective tilting control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a rigid rear anti-tilt stop is used, then the stability of the vacuum cleaner nozzle is improved, but noise pollution increases and floor scratching risk increases

Engineering Contradiction:

ImprovestabilityVSAvoidnoise pollution

Core Design Contradiction:

Stability of the object's compositionVSObject-generated harmful factors

Solution Approach 1:

The patent changes the physical state and mechanical properties of the rear anti-tilt stop from rigid to deformable. The stop is made of elastomeric material that can elastically deform under load, changing its interaction characteristics with the floor from rigid contact to compliant contact, thereby reducing noise and scratching while maintaining stability control.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite construction by integrating the deformable rear anti-tilt stop into the main body of the nozzle. The stop is made of elastomeric material that can be molded as an integral part or attached component, combining structural support with noise-reducing deformable properties in a unified design.

Inventive Principle:

Principle #40Composite materials

2Stability of the object's composition

If a rigid rear anti-tilt stop is used, then the stability of the vacuum cleaner nozzle is improved, but the risk of floor scratching increases

Engineering Contradiction:

ImprovestabilityVSAvoidfloor scratching

Core Design Contradiction:

Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The patent changes the physical state and mechanical properties of the rear anti-tilt stop from rigid to deformable. The stop is made of elastomeric material that can elastically deform under load, changing its interaction characteristics with the floor from rigid contact to compliant contact, thereby reducing noise and scratching while maintaining stability control.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite construction by integrating the deformable rear anti-tilt stop into the main body of the nozzle. The stop is made of elastomeric material that can be molded as an integral part or attached component, combining structural support with noise-reducing deformable properties in a unified design.

Inventive Principle:

Principle #40Composite materials

3Object-generated harmful factors

If a deformable rear anti-tilt stop is used, then noise pollution is reduced, but the anti-tilting effectiveness may be compromised

Engineering Contradiction:

Improvenoise pollutionVSAvoidanti-tilting effectiveness

Core Design Contradiction:

Object-generated harmful factorsVSStability of the object's composition

Solution Approach 1:

The patent changes the physical state and mechanical properties of the rear anti-tilt stop from rigid to deformable. The stop is made of elastomeric material that can elastically deform under load, changing its interaction characteristics with the floor from rigid contact to compliant contact, thereby reducing noise and scratching while maintaining stability control.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces dynamic behavior to the anti-tilt stop by making it deformable. The stop dynamically adapts its rigidity based on operating conditions - remaining relatively rigid during normal operation for stability control, but deforming during backward movement to reduce noise and scratching, thus providing context-dependent performance.

Inventive Principle:

Principle #15Dynamics

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 significantly reduces noise and the risk of floor scratching by allowing the rear anti-tilt stop to deform on contact, improving the vacuum cleaner nozzle's performance and safety on various surfaces.

Implementation Method 1

the rear anti-tilt stop is deformable and being located at the rear of the suction mouth and at least partly at the rear of the transverse pivot axis

Methodology Applied

Scientific EffectDeformation: Deformation

Data Source

PatentEP4371456A1Vacuum cleaner nozzle provided with a deformable rear Anti-tilting stop

Publication Date: 2024.05.22 SEB SA

Figure 1~3
Figure 4~5
Figure 6~8

AI summary

The vacuum nozzle (2) comprises a main body (3) having a sole (4) and a suction nozzle (6) opening into an underside (5) of the sole (4); a connecting sleeve (7) fluidly connected to the suction nozzle (6); a hinge device (13) mechanically connecting the connecting sleeve (7) to the main body (3), the hinge device (13) comprising a pivot joint defining a transverse pivot axis (X1) and configured to allow the connecting sleeve (7) to tilt forward and backward; a rear anti-tipping stop (18) deformable and located at the rear of the suction nozzle (6) and at least partly at the rear of the transverse pivot axis (X1).