Vacuum Cleaner Modular Nozzle Assembly for Quick Tool Switching

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Solution Overview

Problem

Existing vacuum cleaners with multiple suction nozzles require cumbersome and inconvenient operations for nozzle changes, as they need to be individually coupled and uncoupled, and the brush body can interfere with nozzle usage, especially in narrow gaps.

Innovation Solution

A vacuum cleaner design featuring a connection pipe that allows for instant selection and use of different suction ports, including a crevice tool or brush, with a mechanism that prevents brush exposure and dust accumulation when not in use, enabling easy switching between nozzles and maintaining cleanliness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple suction nozzles are individually provided and coupled to the cleaner body one by one, then different suction ports can be used, but the operation becomes cumbersome and inconvenient

Engineering Contradiction:

Improveability to use different suction portsVSAvoidconvenience of nozzle changing

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The suction nozzle is divided into a connection pipe portion that couples to the cleaner body and a separate tool assembly that can be independently attached or detached, allowing quick switching between different suction tools without recoupling the entire nozzle assembly

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple tools including crevice tools and brushes are nested within or attached to the connection pipe assembly, allowing them to be stored and quickly accessed without requiring separate storage and manual attachment procedures

Inventive Principle:

Principle #7Nested doll (Nesting)

2Ease of operation

If the connection pipe is separated from the cleaner body, then nozzle switching is enabled, but the brush may be exposed and dust may accumulate on it

Engineering Contradiction:

Improvenozzle switching capabilityVSAvoidbrush exposure and dust accumulation

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The brush is nested within a protective housing or cover that remains attached to the connection pipe, so when the tool assembly is detached for nozzle switching, the brush is automatically enclosed and protected from dust accumulation

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The protective cover is pre-positioned to automatically enclose the brush when the tool assembly is detached, preventing dust accumulation before it becomes a problem

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20230404337A1Vacuum cleaner

Publication Date: 2023.12.21 LG ELECTRONICS INC

AI summary

A vacuum cleaner is disclosed. The vacuum cleaner comprises a cleaner body, a suction nozzle, a connection pipe, a first tool assembly, a second tool assembly, and a pipe assembly. The first tool assembly is detachably fixed to a body suction port of the cleaner body and has a first suction port which communicates with the body suction port. The second tool assembly is detachably fixed to the first tool assembly and has a second suction port which communicates with the body suction port. The pipe assembly is fixed to the rear side of the connection pipe and detachably fixed to the second tool assembly. The first tool assembly, the second tool assembly, or the pipe assembly can be selectively detached from the cleaner body, and each tool (suction port) can be effectively used.