Wiper Arm Hose Guide as Coupling Element for Nozzle Units
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Solution Overview
Problem
Existing wiper arm devices lack efficient and adaptable solutions for integrating additional nozzle units, leading to complex assembly processes and limited retrofitting capabilities, which restrict the flexibility and effectiveness of windshield wiper systems.
Innovation Solution
A wiper arm device with a hose retention unit that includes a hose guide and a coupling unit, where the first coupling element is formed partially by the hose guide, allowing for tool-free coupling with the additional nozzle unit, simplifying assembly and enabling flexible positioning of nozzle units along the hose retention unit, and incorporating a rotation prevention unit for improved operational reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional coupling methods are used for integrating additional nozzle units, then assembly processes become complex and require additional components, but the hose guide could be used as a coupling element to simplify the process
Solution Approach 1:
The hose guide is designed to serve dual functions: guiding the washing water hose and acting as a coupling element for additional nozzle units. This multi-functionality eliminates the need for separate coupling components, simplifying the overall device structure while maintaining adaptability for retrofitting existing wiper systems with additional nozzle units at various positions.
2Reliability
If additional coupling components are used to attach nozzle units, then coupling reliability improves, but the number of components and assembly steps increases
Solution Approach 1:
The coupling function is merged into the hose guide structure itself, which already exists in the system. By integrating the coupling element with the hose guide, the patent reduces the total number of components while maintaining reliable coupling through the hose guide's geometric design that provides secure attachment for additional nozzle units.
3Device complexity
If the hose guide is used as a coupling element, then the number of components is reduced, but the positioning precision of nozzle units may be affected
Solution Approach 1:
The hose guide is designed with specific local geometric features at its open end that provide precise positioning for additional nozzle units. These localized structural characteristics ensure accurate and reproducible positioning while the rest of the hose guide maintains its primary function of guiding and protecting the washing water hose.
Data Source
AI summary
The invention relates to a wiper arm device, in particular a windscreen wiper arm device, comprising: at least one hose-holding unit (12) which can be mounted on at least one wiper arm (10) and which comprises at least one hose guide (14) provided for guiding at least one washing water hose (16); at least one auxiliary nozzle unit (18); and at least one coupling unit (20) which is provided to couple the auxiliary nozzle unit (18) to the hose-holding unit (12) and comprises at least one first coupling element (22) and at least one corresponding second coupling element (24) for coupling. According to the invention, the first coupling element (22) is formed at least in part by the hose guide (14).