Windshield Wiper Frame With Elastic Force Distribution
Solution Overview
Problem
Conventional windshield wiper frames do not apply uniform force to the wiper blade, affecting its wiping effectiveness, as excessive or insufficient force can lead to poor attachment and increased friction, respectively.
Innovation Solution
A windshield wiper frame design featuring a main arch-shaped frame with auxiliary frames, where the middle parts of the auxiliary frames are movably connected to the end parts of the main frame, allowing for uniform force distribution and elastic deformation to adjust force application based on the wiper arm's force magnitude, ensuring consistent wiping performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional wiper frame with an arc-shaped elastic steel plate is used, then the structure is simple, but the force distribution on the wiper blade is non-uniform, affecting wiping effectiveness
Solution Approach 1:
The wiper frame is divided into multiple independent components: a main frame and multiple auxiliary frames. Each auxiliary frame is independently connected to the main frame through buckles, allowing each segment to independently apply force to different sections of the wiper blade. This segmentation enables uniform force distribution across the entire blade length while maintaining overall structural simplicity.
2Device complexity
If the wiper arm exerts less force on the middle part of the wiper frame, then the structure can be simpler, but the middle part of the wiper blade cannot be attached to the windshield, greatly affecting the wiping effect
Solution Approach 1:
The auxiliary frames are designed with movable connections to the main frame through buckles, creating a dynamic force distribution system. When the wiper arm applies force to the main frame, the auxiliary frames automatically adjust their positions and force contributions based on the main frame's deformation. This ensures that even when overall force is reduced, each section of the wiper blade receives appropriate force for reliable attachment.
3Reliability
If the main frame is made elastic to adjust force application, then the wiping effect is improved, but the force distribution may become non-uniform without proper auxiliary structures
Solution Approach 1:
The auxiliary frames act as intermediary elements between the main frame and the wiper blade. When the elastic main frame deforms under wiper arm force, the auxiliary frames mediate this deformation by translating it into uniform force applications at multiple contact points along the blade. This intermediary mechanism ensures that the elastic deformation of the main frame results in uniform rather than non-uniform force distribution.
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 design ensures uniform force application to the wiper blade, preventing excessive friction and ensuring proper attachment, thereby enhancing the wiping effect by adjusting to varying forces exerted by the wiper arm.
Implementation Method 1
The main frame is in the shape of an arch, and the main frame is of an elastic structure... the main frame can uniformly transfer the force from the wiper arm to the auxiliary frames... The main frame can correspondingly deform based on the magnitude of the force applied to the main frame by the wiper arm
Data Source
Figure 1~3
Figure 4~6
Figure 7~9
AI summary
Provided is a windshield wiper frame, comprising a main frame (1) and two auxiliary frames (2), wherein the main frame (1) is in the shape of an arch, and the main frame (1) is of an elastic structure; and middle parts of the two auxiliary frames (2) are movably connected to end parts at two ends of the main frame (1), respectively. When in use, a wiper arm is movably connected to a middle part of the main frame (1), and a wiper blade (6) is fixed to the auxiliary frames (2). The main frame (1) can uniformly transfer force of the wiper arm to the auxiliary frames (2) such that the auxiliary frames (2) uniformly apply force to the wiper blade (6). In addition, the main frame (1) can correspondingly deform based on the magnitude of the force applied to the main frame (1) by the wiper arm so as to prevent the force transferred to the auxiliary frames (2) from being too much or too little, thus facilitating guaranteeing a wiping effect of the wiper blade (6).