Vehicular Cleaner Nozzle and Intake Filtration Against Debris

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Solution Overview

Problem

Existing vehicular cleaners face issues with foreign matter entering the air blowing portion, vibration transmission to the air blowing portion, and water drops or foreign matter adhering to the nozzle tip or ejection port, which affect the cleaning efficiency and reliability.

Innovation Solution

A vehicular cleaner design featuring a filter at the intake port to prevent foreign matter entry, a vibration-proof portion using elastic members and a cage structure to absorb vibrations, and a nozzle with air ejection ports on both sides of the cleaning liquid ejection port to remove water drops and foreign matter from the nozzle tip.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If air is taken in from the intake port, then the air blowing portion can operate, but foreign matter may enter the inner side of the air blowing portion

Engineering Contradiction:
Improveair blowing operationVSAvoidforeign matter entry
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

A filter is introduced as an intermediary component between the intake port and the inner side of the air blowing portion. The filter allows air to pass through while blocking foreign matter, thus resolving the contradiction between maintaining air flow for operation and preventing foreign matter entry.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If the driving portion drives the air blowing portion, then the air blowing function is achieved, but vibration is transmitted to the air blowing portion body

Engineering Contradiction:
Improveair blowing functionVSAvoidvibration transmission
Core Design Contradiction:
ProductivityVSStability of the object's composition

Solution Approach 1:

A vibration-proof portion is provided beforehand between the driving portion and the air blowing portion body to cushion and absorb vibrations before they can be transmitted to the air blowing portion body, thus preventing operational instability.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

3Productivity

If cleaning liquid is ejected from the nozzle, then the cleaning function is achieved, but water drops may remain at the tip end of the nozzle

Engineering Contradiction:
Improvecleaning functionVSAvoidwater drop reflection
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

Air ejection ports are provided to extract and remove water drops from the tip end of the nozzle using air flow, thereby eliminating the harmful effect of water drop reflection while maintaining the cleaning function.

Inventive Principle:
Principle #2Taking out (Extraction)

4Productivity

If foreign matter adheres to the ejection port of the nozzle, then the nozzle can function, but the ejection port may be blocked when foreign matter is frozen

Engineering Contradiction:
Improvenozzle functionVSAvoidejection port blockage
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

Air is ejected from the air ejection ports to prevent foreign matter from adhering to and freezing at the ejection port. This converts the potential harm of cold temperatures causing blockage into a beneficial air flow that actively clears the ejection port, maintaining reliability.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

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 effectively prevents foreign matter from entering the air blowing portion, reduces vibration transmission, and efficiently removes water drops and foreign matter from the nozzle, enhancing the cleaning process and reliability.

Implementation Method 1

a filter which is provided at the intake port, prevents foreign matter from entering the air blowing portion, and allows air to pass through the filter

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 2

a vibration-proof portion which prevents a vibration of the driving portion from being transmitted to the supporting portion

Methodology Applied
Scientific EffectVibration absorption: Damping

Implementation Method 3

two air ejection ports which eject air toward the cleaning surface of the cleaning object

Methodology Applied
Scientific EffectAir flow: Fluid Spray

Data Source

PatentUS12162442B2Vehicular cleaner
Publication Date: 2024.12.10 KOITO MFG CO LTD
  • US12162442B2 patent drawing
  • US12162442B2 patent drawing
  • US12162442B2 patent drawing

AI summary

This vehicular cleaner is provided with: an air blowing portion having an intake port through which air is taken in, the air being ejected to a cleaning object; and a filter which is provided at the air intake port, prevents foreign matter from entering the air blowing portion, and allows air to pass through the filter.