Wiper Arm Spray Nozzle Nesting in U-Mount

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Solution Overview

Problem

Existing wiper devices with spray nozzles on the wiper arm require a widened design, leading to visual and production challenges, as well as necessitating adaptations in vehicle body or attachment locations, and are cumbersome to produce.

Innovation Solution

The wiper device is designed with spray nozzles that do not project laterally beyond the U-shaped mount of the wiper arm, allowing for a compact design, with the spray nozzles integrated within the mount and connected detachably, enabling simple mounting and a secure fastening mechanism for the wiper blade.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If spray nozzles are arranged on the wiper arm, then cleaning function is improved, but wiper arm width must be enlarged

Engineering Contradiction:
Improvecleaning functionVSAvoidwiper arm width
Core Design Contradiction:
Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The spray nozzles are integrated within the U-shaped mount structure of the wiper arm, nesting the cleaning function inside the existing structural boundaries. This allows the spray nozzles to be housed without increasing the overall width of the wiper arm, as they are contained within the hollow space of the U-shaped mount.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

Instead of arranging spray nozzles laterally on the wiper arm (width dimension), the design places them within the depth of the U-shaped mount structure. This shifts the spatial arrangement from a lateral projection to an internal integration, maintaining the original width while adding functionality.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If wiper arm is widened for spray nozzles, then cleaning function is improved, but visual appearance deteriorates

Engineering Contradiction:
Improvecleaning functionVSAvoidvisual appearance
Core Design Contradiction:
Adaptability or versatilityVSShape

Solution Approach 1:

The spray nozzles are nested within the existing U-shaped mount structure, maintaining the original streamlined width of the wiper arm. This prevents any visual disruption to the design, as the spray nozzles are hidden inside the structural boundaries rather than protruding outward.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Adaptability or versatility

If wiper arm is widened for spray nozzles, then cleaning function is improved, but production complexity increases

Engineering Contradiction:
Improvecleaning functionVSAvoidproduction complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The spray nozzles are integrated within the existing U-shaped mount structure, which can be produced as a single stamped or bent metal part. This avoids the need for separate lateral extensions or additional welding operations, maintaining the simplicity of the original manufacturing process while adding functionality.

Inventive Principle:
Principle #7Nested doll (Nesting)

4Adaptability or versatility

If wiper arm is widened for spray nozzles, then cleaning function is improved, but vehicle body adaptation is required

Engineering Contradiction:
Improvecleaning functionVSAvoidvehicle body adaptation
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The spray nozzles are nested within the existing U-shaped mount structure, maintaining the original width boundaries of the wiper arm. This ensures compatibility with existing vehicle body openings and mounting locations, eliminating the need for any modifications to the vehicle structure.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentUS10449932B2Wiper device for cleaning vehicle windows
Publication Date: 2019.10.22 VALEO SYST DESSUYAGE SAS
  • US10449932B2 patent drawing
  • US10449932B2 patent drawing
  • US10449932B2 patent drawing

AI summary

The invention relates to a wiper device (10) for cleaning vehicle windows, with a wiper arm (11) and with a wiper blade (12) able to be fastened on the wiper arm (11), with a cleaning device (25), having at least one spray nozzle (44, 45), for spraying a washing fluid, wherein the at least one spray nozzle (44, 45) is arranged in the region of the free end of the wiper arm (11) and is connected directly therewith, and with a fastening device (35) for connecting the wiper blade (12) with the wiper arm (11), wherein the wiper arm (11) has a mount (28), having an at least substantially U-shaped cross section, with two parallel side wall (17, 18) for the fastening device (35) of the wiper blade (12), and wherein the cleaning device (25) is constructed on a component (27) which is separate from the fastening device (35) for the wiper blade (12). It is provided according to the invention that the at least one spray nozzle (44, 45) does not, at least laterally, project over the cross-section of the U-shaped mount (28).