Wiper Arm Auxiliary Nozzle Detachable Connection
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Solution Overview
Problem
Existing wiper arm devices lack a flexible and easily modifiable design for connecting and retrofitting auxiliary nozzle units, which limits their adaptability and maintenance efficiency.
Innovation Solution
A wiper arm device with a detachable connecting unit that allows for non-destructive attachment of auxiliary nozzle units to the duct connecting unit, featuring various coupling mechanisms such as push-fit, bayonet, and plug-in connections, along with anti-rotation elements for secure positioning, enabling flexible deployment and easy maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If auxiliary nozzle units are permanently integrated into the wiper arm device, then structural stability is improved, but adaptability and ease of maintenance deteriorate
Solution Approach 1:
The wiper arm device is segmented into modular components: the duct connecting unit is divided into a first duct connecting unit (integrated with the wiper arm) and a second duct connecting unit (detachable auxiliary nozzle unit). This segmentation allows the auxiliary nozzle unit to be detachably connected to the first duct connecting unit, providing both structural stability when connected and adaptability when detachable, thereby resolving the contradiction between structural stability and adaptability.
2Stability of the object's composition
If auxiliary nozzle units are permanently integrated into the wiper arm device, then structural stability is improved, but ease of repair deteriorates
Solution Approach 1:
The duct connecting unit is segmented into integrated and detachable portions, allowing the auxiliary nozzle unit to be easily separated from the main wiper arm device for maintenance or replacement without affecting the structural integrity of the remaining system.
Solution Approach 2:
The detachable auxiliary nozzle unit can be easily removed (discarded) from the first duct connecting unit when maintenance is needed, and a new unit can be recovered by reconnecting or replacing it, significantly improving ease of repair while maintaining structural stability during operation.
3Adaptability or versatility
If a detachable connecting unit is used to connect auxiliary nozzle units, then adaptability is improved, but device complexity increases
Solution Approach 1:
The first duct connecting unit is designed with universal coupling elements that can connect to multiple different auxiliary nozzle unit configurations. This multi-functionality allows a single duct connecting unit design to accommodate various nozzle arrangements and spray patterns, improving adaptability without proportionally increasing device complexity.
Solution Approach 2:
Instead of making the entire wiper arm device complex and detachable, the invention inverts the approach by keeping the main duct connecting unit simple and integrated, while only making the auxiliary nozzle unit detachable. This selective detachability provides adaptability where needed while minimizing overall device complexity.
Data Source
AI summary
A wiper arm device with at least one duct connecting unit (10) for connecting at least two wiper fluid duct sections to each other, with at least one duct retaining unit (14) which can be arranged on at least one wiper arm (12) and is configured in order to retain at least the duct connecting unit (10) on the wiper arm (12) and with at least one auxiliary nozzle unit (16). The wiper arm device has a connecting unit (18) which is configured in order to connect the at least one auxiliary nozzle unit (16) detachably to the duct connecting unit (10), in particular non-destructively.