Wiper Blade Adapter Locking With Longitudinal Stop Protection
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Solution Overview
Problem
Existing wiper blade adapters for rod arms do not provide reliable locking mechanisms, risking damage or breakage during assembly and disassembly due to improper insertion or withdrawal of the wiper arm, especially when the housing lacks a front stop.
Innovation Solution
An adapter with a longitudinal stop projecting into the housing to limit translational movement of the wiper arm, featuring a locking button and a complementary surface on the arm to ensure secure locking without risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the housing passes all the way through without a front stop, then the adapter structure is simpler and more open, but the risk of over-insertion increases causing damage or breakage of the locking button
Solution Approach 1:
The longitudinal stop is positioned in advance within the housing to prevent over-insertion of the wiper arm before the locking button engagement is complete. This preliminary mechanical constraint ensures that the arm cannot be pushed too far into the adapter, thereby protecting the locking button from damage while maintaining a relatively simple adapter structure without requiring a complex front stop mechanism
2Device complexity
If the locking button engages in a lateral cutout of the arm, then the locking mechanism is simpler, but the risk of damage or breakage of the button increases during improper assembly
Solution Approach 1:
The longitudinal stop acts as a protective element positioned beforehand within the housing to limit the insertion depth of the wiper arm. This cushioning constraint prevents the arm from being pushed too far, thereby protecting the locking button from excessive force and potential breakage during assembly or disassembly operations, while maintaining a simple locking mechanism design
3Productivity
If the arm is inserted without limiting the translational movement, then the assembly process is faster, but the risk of damage to the adapter increases
Solution Approach 1:
The longitudinal stop is pre-positioned within the housing to establish a maximum insertion limit for the wiper arm. This preliminary constraint allows for quick assembly by providing clear mechanical guidance and preventing over-insertion, thereby protecting the adapter from damage while maintaining fast assembly speeds without requiring complex control systems
Data Source
AI summary
Disclosed is an adapter for a windshield wiper blade, configured to allow a wiper blade to be mounted on a wiper arm, the adapter including an arm through-housing configured to receive one end of the wiper arm such that the wiper arm can slide in a longitudinal direction, and a locking button configured to prevent the wiper arm in a rest position from being retracted in the longitudinal direction. The adapter also includes at least one longitudinal stop that protrudes in the arm housing and is configured to cooperate with a mating surface formed in a section of the wiper arm in order to prevent the wiper arm from being longitudinally inserted into the arm housing.