Wiper blade assembly and window wiper
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Solution Overview
Problem
Existing window wipers are inefficient in preventing dirty water from flowing down the glass and contaminating the lower part of the glass and the ground, and they require separate devices for spraying water or cleaning solutions, leading to cumbersome and inconvenient usage.
Innovation Solution
A wiper blade assembly with a layered structure, comprising a scrubbing layer made of hydrophobic materials and a guide layer made of water-absorbing materials, which directs dirty water into a water receiving port and then into a storage chamber, preventing it from flowing down the glass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a traditional single-layer wiper blade is used, then the structure is simple, but dirty water flows down the glass and contaminates the lower part and ground
Solution Approach 1:
The wiper blade is divided into multiple functional layers: a hydrophobic scrubbing layer for cleaning and a hydrophilic guide layer for water management. This segmentation allows each layer to perform its specific function, preventing dirty water from flowing down the glass while maintaining structural organization.
Solution Approach 2:
The wiper blade combines materials with different properties - hydrophobic materials (rubber, silica gel, soft PVC, EVA) for the scrubbing layer and hydrophilic materials (cloth, paper, PVA, sponge, cellulose sponge, superfine fiber cloth, bamboo fiber, water-absorbing resin) for the guide layer. This composite structure enables simultaneous cleaning and water guidance functions.
2Ease of operation
If separate spraying devices are used for cleaning, then the cleaning function is specialized, but the usage becomes cumbersome and inconvenient
Solution Approach 1:
The invention merges the wiper blade cleaning function with an integrated water spraying system. The spraying device is combined with the wiper blade assembly, allowing users to spray water or cleaning solution directly onto the glass through the wiper handle, eliminating the need for separate spraying devices and simplifying the cleaning process.
Solution Approach 2:
The wiper blade assembly is designed to perform multiple functions: cleaning the glass surface, guiding dirty water away, and spraying water or cleaning solution. This multi-functional design consolidates what would traditionally require separate devices into a single integrated tool, improving ease of operation.
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
The solution effectively prevents dirty water from contaminating the lower part of the glass and the ground, while also integrating a water spraying function to improve cleaning efficiency and convenience.
Implementation Method 1
the second layer is a guide layer made of a water-absorbing material... the water-absorbing material destroys the tension of the large water droplets and quickly absorbs the water
Implementation Method 2
the first layer is a scrubbing layer made of a rubber material, silica gel material, soft polyvinyl chloride (PVC) material or ethylene-vinyl acetate (EVA) material... dirty water coming down with the scrubbing layer forms large water droplets
Implementation Method 3
the water flows down along the guide layer under the action of gravity
Data Source
AI summary
A window wiper is provided. A wiper blade assembly includes a wiper blade and a mounting part. The wiper blade includes a first layer and a second layer which are arranged in a layered manner. The first layer is a scrubbing layer made of a rubber material, silica gel material, soft PVC material or EVA material, and the second layer is a guide layer made of a water-absorbing material. A rear end of the wiper blade is connected with the mounting part, and its front end is a free end. The window wiper includes the wiper blade assembly, a wiper blade mounting frame and a handle, wherein the wiper blade mounting frame is provided with a water receiving port. When the wiper blade assembly is mounted on the handle through the wiper blade mounting frame, the guide layer is located above the water receiving port.