Windshield wiper device, in particular wiper arm adapter device, wiper arm waving the windshield wiper device and windshield wiper having the windshield wiper device
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Solution Overview
Problem
Existing windshield wiper devices face issues with unintended discharge of wiping water mixture during wiper blade coupling or uncoupling operations, posing safety risks and inefficiencies.
Innovation Solution
A windshield wiper device with a coupling unit that automatically closes the fluid channel by moving the adapter piece relative to the fluid connection piece, utilizing a valve element and guiding elements to ensure a secure and sealed connection, preventing fluid leakage during wiper blade changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the adapter piece and fluid connection piece are moved relative to each other during coupling or uncoupling operation, then the wiper blade can be changed easily, but unintended discharge of wiping water mixture occurs during the operation
Solution Approach 1:
The coupling unit is activated in advance during the coupling operation to close the fluid channel before uncoupling occurs. This preliminary action prevents fluid discharge by ensuring the channel is sealed before the adapter piece moves away from the fluid connection piece during uncoupling.
Solution Approach 2:
The coupling unit acts as an intermediary mechanism between the adapter piece and fluid connection piece. It mediates the relative movement by controlling the fluid channel closure, ensuring that fluid discharge is prevented while allowing the necessary mechanical coupling and uncoupling operations to proceed.
2Reliability
If a coupling unit is added to close the fluid channel, then fluid leakage is prevented, but device complexity increases
Solution Approach 1:
The coupling unit combines multiple functions into a single integrated mechanism: it provides mechanical coupling between the adapter piece and fluid connection piece while simultaneously controlling the closure of the fluid channel. This merging reduces the need for separate components and simplifies the overall structure.
Solution Approach 2:
The coupling unit serves multiple purposes: it enables coupling and uncoupling operations, controls fluid channel closure, and prevents fluid discharge. This multi-functionality eliminates the need for additional dedicated components, thereby maintaining structural simplicity while achieving reliable fluid sealing.
3Object-generated harmful factors
If the coupling unit is activated during coupling operation, then fluid discharge is prevented, but activation control complexity increases
Solution Approach 1:
The coupling unit is designed to activate automatically based on the relative position or movement of the adapter piece and fluid connection piece. This self-service mechanism eliminates the need for external control systems, sensors, or actuators, thereby preventing fluid discharge through a simple, passive control approach.
Solution Approach 2:
The coupling unit mediates between the mechanical coupling operation and fluid channel closure. It automatically senses or responds to the coupling state and activates the closure mechanism accordingly, providing intelligent control without adding complex external activation systems.
Data Source
AI summary
The invention is based on a windshield wiper device, in particular a wiper arm adapter device, having at least one fluid connection piece (36) which delimits at least one fluid channel (38), and having at least one adapter piece (40), wherein the adapter piece (40) and the fluid connection piece (36) are constructed to be able to be moved relative to each other and are provided to be moved relative to each other during a coupling or uncoupling operation, in particular with a wiper blade (16).It is proposed that the windshield wiper device comprise at least one coupling unit (42) which is provided to close the fluid channel (38) in accordance with a position of the adapter piece (40) relative to the fluid connection piece (36).