Wiper Arm Connection Device Channel Extraction
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Solution Overview
Problem
The existing connection devices for vehicle windshield wiper systems face issues with the manufacturing process, resulting in a sleeve that interferes with the spray orifice and degrades the aesthetic appearance, as well as complicates the extraction of recesses for liquid circulation.
Innovation Solution
A connection device with a channel that opens at the connection means, allowing for the extraction of a generator drawer during demolding, eliminating the need for an external sleeve, and featuring a duct in communication with the channel for liquid distribution, along with closure means to prevent liquid leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a molding process with a drawer is used to create liquid circulation channels, then the channel can be formed in the connector, but the drawer extraction creates a sleeve that interferes with spray orifice positioning and degrades aesthetic appearance
Solution Approach 1:
The invention extracts the harmful sleeve element from the system by redesigning the drawer extraction path. Instead of extracting through the outer face where the spray orifice is needed, the drawer is extracted through an internal cavity, removing the sleeve that causes interference and aesthetic degradation while preserving the channel formation capability
Solution Approach 2:
The invention changes the extraction dimension by routing the drawer through an internal cavity rather than through the external face. This dimensional shift allows the channel to be formed without creating a surface sleeve, eliminating the conflict between channel formation and spray orifice positioning
2Ease of manufacture
If the drawer is extracted from the outer face to form the channel, then the channel can be created, but the spray orifice position is interfered with by the resulting sleeve
Solution Approach 1:
The harmful sleeve is extracted from the system by changing where the drawer is pulled from. The drawer extraction is redirected through an internal cavity, removing the sleeve that interferes with spray orifice positioning while maintaining the channel formation function
Solution Approach 2:
The extraction path is shifted to a different dimension - from the external face to an internal cavity. This allows the channel to be formed without creating surface irregularities that would compromise spray orifice positioning precision
3Ease of manufacture
If the drawer extraction creates a sleeve on the external face, then the channel is formed, but the aesthetic appearance is degraded
Solution Approach 1:
The unsightly sleeve is removed from the external surface by redirecting the drawer extraction through an internal cavity. This eliminates the aesthetic degradation while preserving the channel creation capability
Solution Approach 2:
The drawer extraction is moved from the external dimension to an internal dimension, allowing the channel to be formed without creating surface features that compromise aesthetic appearance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design allows for unobstructed positioning of projection orifices along the wiper blade and improves the aesthetic appearance by removing the unsightly sleeve, while ensuring efficient liquid distribution and sealing.
Implementation Method 1
at least one channel in which a liquid is capable of flowing
Implementation Method 2
the connection device comprises means for closing off the channel at the level of the connecting means. Such a closure means seals the liquid to prevent it from exiting through the connecting means
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a connection device 7 suitable for connecting a wiper blade of a vehicle window to a wiper arm, comprising at least one means for securing 8 to the wiper blade and a means for connecting 25 to the wiper arm, said connection device 7 comprising at least one channel 16 in which a liquid is suitable for circulating, characterized in that the channel 16 opens at the level of the connecting means 25. Application to motor vehicles.