Windshield Wiper Assembly Structure to Prevent Blade Displacement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing windshield wiper assembly structures suffer from issues of rubber blade disengagement, displacement, and deterioration, leading to reduced cleaning effectiveness over time.
Innovation Solution
A windshield wiper assembly structure featuring a wiper holder with outer buckling brackets, clamping seats, and elastic sheets, where clipping plates with protruding thorns and blocking portions engage with elastic sheets to securely fasten the wiper blade, preventing disengagement and displacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the rubber blade is clamped and fixed by metal elastic sheets and wiper frame, then the assembly is simple to manufacture, but the rubber blade is prone to disengagement or displacement
Solution Approach 1:
The wiper blade assembly is segmented into multiple functional components: wiper holder, wiper blade, elastic sheets, and clamping seats with clipping plates. This segmentation allows each component to perform its specific function while working together to prevent disengagement, resolving the contradiction between simple manufacturing and reliable fixation.
Solution Approach 2:
The clipping plates are inserted into slots on the wiper blade and extend through the central column, with the elastic sheets nested between the clipping plates and outer buckling brackets. This nested structure creates multiple levels of mechanical interlocking that prevent disengagement while maintaining manufacturing simplicity.
2Duration of action of moving object
If the wiper blade is used for a period of time, then the cleaning function is provided, but the wiper blade deteriorates, deforms, or displaces affecting cleaning effectiveness
Solution Approach 1:
The elastic sheets provide dynamic elastic restoring force that continuously maintains the clamping pressure on the wiper blade. This dynamic mechanism compensates for wear and deformation over time, ensuring the wiper blade remains firmly attached and maintains cleaning effectiveness throughout its service life.
Solution Approach 2:
The elastic sheets change their physical parameters (elastic deformation) in response to wear and deformation of the wiper blade, maintaining optimal clamping force throughout the service life. This parameter adaptation ensures consistent cleaning performance even as components age.
3Reliability
If the rubber blade is firmly clamped with multiple clamping seats and elastic sheets, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The clamping seats combine multiple functions into a single component: positioning the wiper blade, providing attachment points for elastic sheets, and preventing disengagement through clipping plates. This merging reduces the number of separate parts needed while maintaining reliable fixation.
Solution Approach 2:
The clipping plates serve multiple functions: they are inserted into slots for positioning, extend through the central column for structural support, and work with elastic sheets for clamping. This multi-functionality reduces overall device complexity while ensuring reliable wiper blade attachment.
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 structure provides a firm and solid assembly that prevents wiper blade disengagement and displacement, ensuring prolonged service life and effective windshield cleaning.
Implementation Method 1
The pair of elastic sheets extend along the wiper blade and are respectively inserted in the first slots on two sides of the central column. One side of each elastic sheet is attached to the central column, and another side of the elastic sheet abuts against the pair of outer buckling brackets.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A windshield wiper assembly structure (1) includes a wiper holder (10), a wiper blade (20), two elastic sheets (30), and two clamping seats (40). The wiper holder (10) includes a main frame (11) and two outer buckling brackets (12). Each outer buckling bracket (12) includes a through groove (121) and an opening (122). The wiper blade (20) extends along the main frame (11) and includes a penetrating portion (21) and a scraping portion (22). The penetrating portion (21) is inserted in the through grooves (121). The penetrating portion (21) includes a central column (211) and a first slot (212). The scraping portion (22) protrudes from the opening (122). The elastic sheets (30) extend along the wiper blade (20) and are respectively inserted to first slots (212). One side of each elastic sheet (30) is attached to the central column (211), and another side of the elastic sheet (30) abuts against the outer buckling brackets (12). The clamping seats (40) are fixed on ends of the wiper blade (20). Each clamping seat (40) includes a pair of clipping plates (41, 41') connected with each other and clamped by the outer buckling brackets (12). Each clipping plate (41, 41') includes a protruding thorn (411 , 411') protruding horizontally and inserted to the first slot (212) on the central column (211) to abut against the elastic sheets (30). The protruding thorn (411 , 411') passes through the central column (211).