Lateral Wiper Arm Nozzle with Latching Connection
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Solution Overview
Problem
Existing wiper arm devices with nozzle units for applying washer fluid to vehicle windows often have inefficient fluid distribution and unreliable nozzle connections, leading to suboptimal performance and ease of use.
Innovation Solution
The nozzle unit is arranged substantially laterally on the wiper arm unit as an extension of the wiper rod and secured through a latching connection, with rigid holding elements providing secure and aerodynamic positioning, allowing for easy installation and preventing unintentional removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the nozzle unit is arranged laterally on the wiper arm unit, then the distribution of washer fluid is improved, but the connection reliability between nozzle unit and wiper arm unit deteriorates
Solution Approach 1:
The lateral arrangement of the nozzle unit segments the wiper arm device into functional modules (wiper rod, nozzle unit, holding elements), allowing independent optimization of fluid distribution while maintaining secure connection through separate latching mechanisms
Solution Approach 2:
The nozzle unit is nested within the wiper arm unit structure through the latching connection mechanism, where the nozzle unit integrates with holding elements that are part of the wiper arm unit, ensuring reliable connection while maintaining lateral positioning for optimal fluid distribution
2Ease of operation
If the nozzle unit is secured with a latching connection, then the ease of installation is improved, but the resistance to unintentional removal deteriorates
Solution Approach 1:
The latching connection employs dynamic elements (spring-loaded latching means) that automatically engage during installation and provide continuous securing force during operation, enabling easy installation while preventing unintentional removal through active retention
Solution Approach 2:
The latching connection is designed as a self-securing mechanism where the latching means automatically engages with the holding element upon installation, providing self-retention without requiring additional fastening steps or external intervention to prevent unintentional removal
3Object-affected harmful factors
If the nozzle unit is arranged as an extension of the wiper rod, then the aerodynamic arrangement is improved, but the device complexity increases
Solution Approach 1:
The nozzle unit is merged with the wiper rod structure through the lateral arrangement and latching connection, creating a unified aerodynamic profile that reduces harmful factors while maintaining manageable device complexity through integrated design
Solution Approach 2:
The holding elements serve multiple functions: providing structural support for the nozzle unit, enabling secure latching connection, and maintaining aerodynamic positioning, thereby reducing overall device complexity through multi-functional components
Data Source
AI summary
A wiper arm device comprising a wiper arm unit which has at least one wiper rod, and comprising at least one nozzle unit which is provided for applying washer fluid onto a vehicle window, and which, in an installed state, is arranged at least substantially laterally on the wiper arm unit. The nozzle unit, in the installed state, is arranged at least substantially as an extension of a wiper rod of the wiper arm unit and is fastened to the wiper arm unit by a latching connection.